CN103196824A - Remanufactured part coat bonding strength detector - Google Patents
Remanufactured part coat bonding strength detector Download PDFInfo
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- CN103196824A CN103196824A CN2012100026680A CN201210002668A CN103196824A CN 103196824 A CN103196824 A CN 103196824A CN 2012100026680 A CN2012100026680 A CN 2012100026680A CN 201210002668 A CN201210002668 A CN 201210002668A CN 103196824 A CN103196824 A CN 103196824A
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Abstract
The invention discloses a remanufactured part coat bonding strength detector, and belongs to the coat detection apparatus field. The detector comprises a pressure head driving mechanism, a control device and a displacement test component, wherein the pressure head driving mechanism is formed by a driving device and a pressure head driven by the driving device through a transmission mechanism; the control device is electrically connected with the driving device of the pressure head driving mechanism; and the pressuring head driving mechanism is provided with the displacement detection component for measuring the displacement amount of the pressure head and the tension spring elongation amount of the transmission mechanism and outputting the amounts in electric signals. The detector has the advantages of simple structure, carrying convenience, accurate detection and the like.
Description
Technical Field
The invention relates to the field of coating detection equipment, in particular to a remanufactured part coating bonding strength detector.
Background
The hot spraying technology, especially supersonic plasma spraying technology, is an important technology for preparing surface coating, and endows the surface of parts with various special properties of wear resistance, corrosion resistance, oxidation resistance, fatigue resistance and the like, thereby achieving the purposes of improving the product quality and prolonging the service life. The sprayed particles impact the surface of the matrix at high speed in a melting or semi-melting mode to generate deformation, inlay and fill, and are finally occluded on the surface of the matrix material to form mechanical anchoring connection, and partial micro-metallurgical bonding is assisted, so that only relatively good bonding strength of a coating interface can be obtained. Because the coating interface of the remanufactured part has a certain degree of structural defects and is firstly under the action of external load in service engineering, the quality of the bonding strength of the coating interface becomes an important factor for determining the quality of the remanufactured part. Engineering practices for remanufacturing urgently require a method for measuring the bond strength of surface coatings on remanufactured parts having various shapes and sizes at a production site.
For actual field test, the measurement method should meet some special requirements besides ensuring the measurement accuracy: the method is not sensitive to the shape of a base part, the shape of a sprayed part can be various, and a method suitable for field measurement can be used for measuring sprayed layers of any or multiple shapes; the base body is preferably not damaged, otherwise local damage can be generated on the surface of the base body, and the service life of a remanufactured product is greatly shortened; the measuring process should be simple and convenient, the actual sprayed layer will have non-uniformity, and multiple measurements at different positions are required to obtain accurate measurement results, which requires the measuring process to be easy to operate and control.
Currently widely used measurement techniques are difficult to meet these requirements, for example, the tensile method can only perform tensile tests on standard samples, cannot directly detect parts, and is not suitable for evaluating coatings with high bonding strength; the shear method is commonly used to measure the interfacial shear strength of thicker coatings and substrates, which is also limited by the shape of the substrate material; cantilever beam bending, three-point bending and four-point bending are common in the measurement of the bonding strength of the coating by a bending method, and the method has no effect on the surface coating of the remanufactured part with a complicated shape; the scratching method is widely used in recent years, has no strict requirement on the manufacture of a sample, is very convenient to operate, is more suitable for evaluating a thin film and is not suitable for a thicker spraying layer; the dynamic measurement method has more strict requirements on the shape and the size of the sample, and is not suitable for evaluating the bonding strength in situ.
Disclosure of Invention
In view of the problems in the prior art, the invention provides a remanufactured part coating bonding strength detector which can detect the bonding strength of a surface coating of a remanufactured part, and is high in detection accuracy and convenient to carry and use.
The technical scheme for realizing the purpose of the invention is as follows:
the invention provides a remanufactured part coating bonding strength detector which comprises:
the device comprises a pressure head driving mechanism, a control device and a displacement detection component; wherein,
the pressure head driving mechanism consists of a driving device and a pressure head driven by the driving device through a transmission mechanism;
the control device is electrically connected with the driving device of the pressure head driving mechanism;
the pressure head driving mechanism is provided with a displacement detection component which measures the displacement of the pressure head and the extension of a tension spring of the transmission mechanism and outputs the displacement by an electric signal.
In the above detector, the transmission mechanism of the ram drive mechanism includes:
the device comprises a screw, a nut, a tension spring, an inclined block, a pressure spring and a guide rail; wherein,
one end of the screw is connected with the power output end of the driving device;
the nut is movably sleeved on the screw rod;
the front end of the nut is connected with the tension spring;
the front end of the tension spring is connected with the inclined block;
the nut and the inclined block are both arranged on a straight guide rail and can slide linearly along the guide rail;
and a pressure head mounting position is arranged on the inclined plane at the top of the inclined block, a pressure spring is arranged at the pressure head mounting position, and the pressure spring is sleeved on a pressure head mounted on the pressure head mounting position.
In the above-mentioned detector, the detector further includes:
the shell, pressure head actuating mechanism's drive arrangement, drive mechanism and pressure head all set up in the shell, and the pressure head stretches out on the lateral wall of shell front end, and the shell afterbody is equipped with the handle part.
In the detector, the positioning ring is arranged in the middle of the shell. The positioning ring is used for detecting the inner hole remanufactured part coating.
The above-mentioned detector still includes:
the supporting mechanism comprises a supporting column and a measured object supporting platform; wherein, the upper end of the supporting column is provided with a mounting position for mounting the pressure head driving mechanism; the tested object supporting platform is arranged in the middle of the supporting column and corresponds to a pressure head of a pressure head driving mechanism arranged in the mounting position at the upper end of the supporting column. For use with the support mechanism for detecting remanufactured part coating exposure to the exterior surface.
In the detector, the driving device of the pressure head driving mechanism adopts a servo motor.
The above-mentioned detector still includes:
the acoustic emission device, acoustic emission device's acoustic emission probe sets up on the testee of pressure head department, and acoustic emission device's host computer is connected with the acoustic emission probe.
In the above apparatus, the ram of the ram driving mechanism includes:
a diamond indenter or a tungsten carbide indenter;
the tungsten carbide pressure head is a spherical pressure head, and the diameter of the tungsten carbide pressure head is 3mm, 4mm or 5 mm.
In the above detector, the displacement detecting member is a displacement sensor.
The above-mentioned detector still includes: and the processing and displaying device is connected with the displacement detection part and is used for processing the electric signal output by the displacement detection part to obtain a detection result and displaying and outputting the detection result.
The invention has the beneficial effects that: through the cooperation of the control device and the pressure head driving mechanism, the pressure head of the pressure head driving mechanism can be effectively controlled to press in the surface coating of the measured object at different press-in loading speeds, press-in alternating frequencies, press-in load magnitude and the like so as to carry out detection, and through the displacement detection component, the pressure head displacement and the extension amount of the tension spring of the transmission mechanism can be accurately converted into electric signals and output, and the whole press-in process is monitored in real time by acoustic emission signals, so that the bonding strength of the coating and the matrix is evaluated by the characteristics of the acoustic emission signals and the press-in critical load. The detector has the advantages of simple structure, convenience in carrying, accuracy in detection and the like.
Drawings
The drawings that are required to be used in the description of the embodiments are given below.
Fig. 1 is a schematic structural diagram of a detector provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an external shape of the detector according to the embodiment of the present invention;
fig. 3 is a schematic structural diagram of another external shape of the detector according to the embodiment of the present invention;
FIG. 4 is a schematic diagram of a coating interface indentation test of a test apparatus according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a press-in detection of a coating surface of a detector provided in an embodiment of the present invention;
FIG. 6 is a schematic diagram of a detection system formed by the detector according to the embodiment of the present invention;
the component names indicated by the reference numerals in the drawings are: 1-a control device; 2-a drive device; 3-a screw; 4-a nut; 5-a guide rail; 6-a tension spring; 7-a sloping block; 8-pressure spring; 9-a pressure head; 10-a first displacement sensor; 11-a second displacement sensor; 12-processing the display device; 121-display or display instrument; 13-a housing; 131-a handle part; 14-a positioning ring; 15-a support mechanism; 151-pressing plate;
101-a substrate of a part to be tested; 102-coating of the part under test; 103-a bonding interface between the substrate and the coating of the part under test;
200-a control host; 201-a control device; 202-a detector; 203-a support mechanism; 204-an acoustic emission device; 205-part under test; 206-display computer of acoustic emission device.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It is to be understood that various changes and modifications may be made by one skilled in the art after reading the teachings herein, and such equivalents are intended to fall within the scope of the invention as defined in the appended claims.
The remanufactured part coating bonding strength detector provided by the embodiment of the invention, as shown in fig. 1, can be used for detecting the coating bonding strength of parts, particularly remanufactured parts, and comprises: the device comprises a pressure head driving mechanism, a control device and a displacement detection component;
the pressure head driving mechanism consists of a driving device and a pressure head driven by the driving device through a transmission mechanism;
the control device is electrically connected with the driving device of the pressure head driving mechanism and used for receiving the press-in parameters and directly controlling the driving device according to the press-in parameters, and the driving transmission mechanism loads the press-in mode of the pressure head, so that the diversity of press-in loads is realized;
the pressure head driving mechanism is provided with a displacement detection part which is used for measuring the pressure head displacement and the extension amount of the tension spring of the transmission mechanism and outputting an electric signal, the displacement detection part can adopt a displacement sensor, the detected displacement of the pressure head and the extension amount of the tension spring of the transmission mechanism can be converted into the electric signal to be transmitted to the processing display device, and the electric signal is processed and displayed by the processing display device.
In the detector, the driving device of the pressure head driving mechanism can adopt a servo motor so as to be convenient for the control device to control and output different torques so as to convert the torques into the pressure head to output different pressing forces.
In the above-mentioned detector, pressure head actuating mechanism's drive mechanism includes: the device comprises a screw, a nut, a tension spring, an inclined block, a pressure spring and a guide rail; wherein, one end of the screw rod is connected with the power output end of the driving device; the nut is movably sleeved on the screw rod and can move along the screw rod under the action of the thread on the screw rod when the screw rod rotates; the front end of the nut is connected with the tension spring; the front end of the tension spring is connected with the inclined block; the nut and the inclined block are both arranged on a straight guide rail and can slide linearly along the guide rail;
and a pressure head mounting position is arranged on the inclined plane at the top of the inclined block, a pressure spring is arranged at the pressure head mounting position, and the pressure spring is sleeved on a pressure head mounted on the pressure head mounting position. The transmission mechanism with the structure can convert the torque of the driving device into linear motion to be output to the inclined block, and the linear motion is converted into vertical force by the inclined block to be transmitted to the pressure head, so that the pressure head can generate downward pressure.
The above-mentioned detector still includes: the shell, pressure head actuating mechanism's drive arrangement, drive mechanism and pressure head all set up in the shell, and the pressure head front end stretches out on the lateral wall of shell front end, and the shell afterbody is equipped with the handle part.
The locating ring can be arranged in the middle of the shell to serve as an auxiliary support, the locating ring can enable the detector to play a role in limiting, locating and supporting when the detector detects the coating on the inner surface of the ring or the part, the stability of the detector is improved, and therefore the accuracy of detection is guaranteed.
The above-mentioned detector still includes: the supporting mechanism comprises a supporting column and a measured object supporting platform; wherein, the upper end of the supporting column is provided with a mounting position for mounting the pressure head driving mechanism; the tested object supporting platform is arranged in the middle of the supporting column and corresponds to a pressure head of a pressure head driving mechanism arranged in the mounting position at the upper end of the supporting column. Can be used to detect through supporting mechanism and expose in the refabrication part coating of surface, stability is better to improve the accuracy of measuring.
The control device, the displacement detection part, the processing display device and the like of the detector can also be arranged in the shell, so that the integrated detector is formed, and the integrated detector is convenient to carry to different work sites to detect the coating bonding strength of the remanufactured parts.
The above-mentioned detector still includes: the acoustic emission probe corresponds to the object to be measured at the indenter, and may be an existing acoustic emission device, such as a PCI-2 acoustic emission monitor manufactured by Physical Acoustic Corporation (PAC). The press-in process of the pressure head can be monitored on line through the acoustic emission device, and the accuracy of press-in detection of the pressure head is improved.
In the above-mentioned detector, pressure head actuating mechanism's pressure head includes: a diamond indenter or a tungsten carbide indenter. The tungsten carbide pressure head is a spherical pressure head, and the diameter of the tungsten carbide pressure head is 3mm, 4mm or 5 mm.
The displacement detection part in the detector can adopt a displacement sensor and two displacement sensors, one is used for detecting the elongation of a tension spring of a transmission mechanism of the pressure head driving device and converting the elongation into an electric signal for output, and the other is used for detecting the displacement of the inclined block and converting the displacement into an electric signal for output, so that the press-in depth and the press-in load can be accurately controlled according to the electric signals output by the two displacement sensors.
The detector can also comprise a processing and displaying device which can be arranged in the shell of the detector and is electrically connected with the two displacement detection parts (namely, the two displacement sensors), and the processing and displaying device processes the electric signals of the displacement detection parts to obtain detection results and displays and outputs the detection results. The processing and displaying device can be realized by a singlechip, a display or a display instrument.
The detector of the present invention will be described in further detail with reference to specific examples.
The detector provided by the embodiment of the invention mainly detects the coating strength of the remanufactured part by using a press-in method. At present, there is a related research on measuring the vacuum deposition film by using a pressing-in method (using a cone or spherical pressure head of a Rockwell hardness tester) in combination with an acoustic emission technology, but at present, there is a fresh report on the research on detecting the bonding strength of a thicker and more microdefects spraying layer. The reasons are summarized as follows: 1) the thermal spraying coating in practical application is thicker (about 100-500 μm), is much larger than the thickness of a thin film (generally less than 10 μm), and the coating often presents different brittleness along with different materials, so that a certain difficulty exists in selecting a reasonable pressure head size and a reasonable pressing load during surface pressing; 2) natural defects such as pores, microcracks, unmelted particles, layered structures and the like inevitably exist in the forming process of the thermal spraying coating, and in the macroscopic pressing-in process, the defects also generate micro-fractures of different degrees under the action of a pressure head, so that the accuracy of judging the cracking of the coating by an acoustic emission signal is influenced; 3) the special complex internal structure of the surface coating causes the discreteness of acoustic emission signals in the pressing-in process, and the evolution rule of the acoustic emission signals is difficult to examine under the condition of small samples. The combination strength of the film is systematically researched by adopting an indentation method and an acoustic emission technology, such as J.V.Stebut and the like, and the acoustic emission signal energy parameter is considered to be most suitable for representing annular cracking or peeling of the coating, and meanwhile, the mounting position of an acoustic emission probe is optimized. However, although the Rockwell hardness tester adopted in the research of the method can realize the representation of the bonding strength by depending on a conical or spherical pressure head, the Rockwell hardness tester is limited by the fact that the hardness tester can not realize various loading modes, and the Rockwell hardness tester causes difficulty in establishing close connection among acoustic emission signals, loads and crack states. The scholars in the world of Yi and hong have developed a special pressing-in instrument capable of realizing continuous loading, and the bonding strength of the coating can be accurately represented by combining the acoustic emission signals, so that good effect is achieved, but the adopted micro-hardness tester has a small pressure head, so that the method is more suitable for measuring the bonding interface of the substrate and the coating (see figure 5), and the ideal effect is difficult to obtain by directly measuring the surface (see figure 6). And aiming at the tough coating, due to large plastic deformation, although the pressing depth is large, even the matrix is crushed, the fracture failure of the coating interface can not be realized, so that the method is not suitable for measuring the bonding strength of the coating on the surface of the remanufactured part.
The detector overcomes the defects of the instrument for detecting the film and the bonding interface by using the pressing-in method, and can directly measure the bonding strength of the surface coating.
As shown in fig. 1, the detector can apply a load to the detected coating surface of the remanufactured part through a pressure head of a pressure head driving mechanism to induce the coating to break and fail, and represents the bonding strength of a coating interface through a critical value of detecting the failure of the coating, and mainly comprises a control device, a pressure head driving mechanism and a displacement sensor; the control device receives input press-in parameters and directly controls a press head loading mode of the press head driving mechanism, so that the diversity of loads is realized; the press head driving mechanism accurately converts the output torque of a servo motor as a driving device into a driving force for vertically pressing the press head into the surface of the coating sample, and detects the bonding strength of the coating.
The ram drive mechanism may be provided with rams of two materials: diamond indenter and tungsten carbide indenter. When the hardness of the sample coating is too high, a diamond pressure head is selected, and other pressure heads are selected from tungsten carbide pressure heads. And the tungsten carbide pressure head can be processed into three spherical pressure heads with different diameters, namely 3mm, 4mm and 5mm, and the pressure head with the proper size can be selected according to different material characteristics of the tested sample coating. The customized pressure head can be replaced according to special requirements when necessary so as to meet the pressing detection requirements of different coatings.
The pressure head driving mechanism is a core component of the detector, is used as a pressing-in loading system of the detector, has the function of converting the output torque of the servo motor into the driving force for pressing the pressure head into the surface of a coating sample vertically through a series of mechanical movements, and consists of the pressure head, an inclined block, a tension spring, a screw rod, the servo motor and the like, and the working principle is as follows, referring to fig. 1: the servo motor rotates to drive the screw to rotate, and the rotation motion is converted into linear motion through the nut; one end of the tension spring is fixed on the nut, and the other end of the tension spring is fixed on the inclined block; when the indenter does not encounter an obstacle (test material), the indenter extends until it contacts the coating material to be tested due to the wedge of the ramp; at the moment, because the resistance is increased, the tension spring is continuously extended while the pressure head is pressed into the machine body, and the provided pressure is also continuously increased; if the motor stops moving, the pressure generated by the tension spring acting on the pressure head through the inclined block is balanced with the resistance of the machine body, and the pressing-in state is always kept, and if the motor does not move reversely, the pressing-in state is always kept until the motor is reset to realize unloading. In order to ensure the linear motion of the nut, the tension spring and the inclined block, the nut and the inclined block are fixed on the linear guide rail; the pressure head and the motion direction of the inclined block are arranged at 90 degrees, and the small pressure spring enables the pressure head to be tightly attached to the inclined surface of the inclined block and can automatically reset when pressure is relieved.
In the detector, two displacement sensors (a first displacement sensor and a second displacement sensor) as displacement detection components are arranged at an inclined block of a transmission mechanism, the displacement of the inclined block is read, the press-in depth of a press head is converted, the purpose of accurately controlling the press-in depth is achieved, the press-in requirements of coatings with different thicknesses can be met, and the condition that a matrix is damaged due to too deep press-in or the interface cannot be effectively damaged due to too shallow press-in is avoided; the other displacement sensor (namely, the second displacement sensor) is arranged between the tension springs, detects the stretching amount of the tension springs, converts the pressing load into the accurate loading force control, can respectively design the pressing load aiming at coatings (alloy, ceramic or metal ceramic) with different mechanical properties, and can provide overload protection for a servo motor serving as a driving device, namely, alarm and power supply cut-off when overload is about to occur.
The detector can further comprise an auxiliary support, and the detector and auxiliary support equipment (such as a support mechanism or a positioning ring) are combined during working, so that the stability and the accuracy of measurement are guaranteed, and the detection of the coating bonding strength of the remanufactured parts with the coating exposed on the outer surface and the inner hole remanufactured parts is also met. The supporting mechanism comprises a supporting column and a measured object supporting platform; wherein, the upper end of the supporting column is provided with a mounting position (which can be a circular ring shape and is sleeved with a detector) for mounting the pressure head driving mechanism; the tested object supporting platform is arranged in the middle of the supporting column and corresponds to a pressure head of a pressure head driving mechanism arranged in the mounting position at the upper end of the supporting column. When inspecting remanufactured parts having a standard test block or coating on an exposed outer surface, the apparatus may be used in conjunction with a support mechanism to achieve stability of use as shown in FIG. 4. When detecting inner hole parts such as an engine cylinder barrel and the like, the detector can realize probing detection, and the purpose of stable operation is realized by additionally arranging the positioning ring, as shown in figure 3. Therefore, the appearance adopted by the detector can meet the requirement of universality by being assisted by different supports.
The detector can also be provided with a processing display device which is connected with the two displacement sensors as displacement detection components, receives electric signals obtained by converting the displacement amount (converted press-in depth) of the inclined block of the transmission mechanism and the elongation amount (converted press-in load) of the tension spring which are respectively detected by the two displacement sensors, processes the electric signals to obtain a detection result, and displays the detection result on the processing display device (which can comprise a display or an intelligent instrument panel), so that the purpose of controlling the press-in load and the press-in depth is achieved;
the detector can also be provided with an acoustic emission device, so that the coating crack propagation behavior in the pressing-in process can be dynamically monitored on line. Acoustic emission technology is a mature, non-destructive, on-line monitoring technology that has gained wide acceptance in a number of industrial applications and material testing fields. Based on the sensitivity and accuracy of acoustic emission signals to material fracture feedback, the detector of the invention selects an acoustic emission technology as a means for online monitoring of the bonding failure of the coating interface. The on-line monitoring of the coating indentation test can be carried out by using a PCI-2 type acoustic emission monitor of the American physical Acoustic corporation (PAC for short). The acoustic emission device can realize online monitoring under a dual-channel condition and mainly comprises a Nano30 type probe, a preamplifier, a PCI-2 acquisition card, a Disp portable box, signal transmission equipment and other components. The Nano30 type probe transmits the micro vibration generated by the internal fracture of the material surface into an electric signal by utilizing the piezoelectric effect, the working temperature of the probe is-66 to 177 ℃, the frequency response range is 125 and 750kHz, and the resonance frequency is 140 kHz; the preamplifier can strengthen the electric signal converted by the probe to a certain degree so as to prevent the electric signal from being excessively scattered and attenuated in the cable transmission process, and three amplification levels, namely 20dB, 40dB and 60dB, are set; the PCI-2 acquisition card converts the sent electric signals into digital signals, analyzes the characteristic parameters of the signals and extracts characteristic waveforms; the Disp portable box fully protects the acquisition card and is also a transfer end of the signal transmission equipment; the signal transmission equipment comprises a cable, a connecting card and the like, and plays a role in transmitting data to the PC.
In practice, the acoustic emission device of the detector of the present invention can use AEwin software to monitor and analyze the acoustic emission signal in real time. AEwin is special processing software for acoustic emission signals independently developed by PAC corporation, and has very powerful pre-and post-processing functions. Through the reasonable setting of the software, each characteristic parameter of the acoustic emission signal reflecting different information can be analyzed in real time, the critical failure state can be accurately captured by setting a proper threshold value, early warning information is sent out, and meanwhile, the software can be compatible with other software to process data, so that the diversification of functions is realized. In the detection process, a coupling agent is adopted to place the probe on the surface of the coating, and the crack propagation behavior of the sample in the pressing-in process is captured in real time.
The detection system formed by matching the detector with each device comprises a control host, a control device, a detector, a supporting mechanism, a sound emission device, a detected part and a display computer of the sound emission device, wherein the display computer is shown in fig. 6.
Compared with the similar measurement technology and detection equipment, the detector of the invention has the following remarkable characteristics:
firstly, a pressure head driving mechanism serving as a press-in loading system adopts a servo motor which runs stably, can ensure that continuous loading or alternating loading is realized on a detected part, and parameters such as loading speed, alternating frequency, load magnitude and the like can be controlled by a control device;
secondly, pressing heads with different materials and different diameters can be matched, and the pressing head with the most appropriate material and shape is selected by analyzing the characteristics of different coating matrix systems;
thirdly, the detector is provided with a displacement sensor as a displacement detection part, can accurately display the displacement of the inclined block and the elongation of the spring, and is used as the press-in feedback quantity of the test equipment so as to achieve the purpose of controlling the press-in thickness or press-in load;
fourthly, the support mechanism is arranged, so that the stability and the accuracy during measurement can be ensured, and the detector is used together with the support mechanism during working, so that the press-in loading of various coatings can be realized;
fifthly, introducing an acoustic emission device, carrying out dynamic real-time online detection on the pressing-in process by using an acoustic emission nondestructive detection technology, and accurately capturing crack initiation and expansion information;
sixth, the detector has simple and light appearance, convenient operation process and visual measurement result, and can meet the requirements of the factory site on coating remanufacturing parts.
The above description is only for the preferred embodiments of the present invention, but the scope of the present invention is not limited to these embodiments, and those skilled in the art can conceive modifications and substitutions within the scope of the present invention. Therefore, the protection scope of the present invention is subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a refabrication part coating bonding strength detector which characterized in that, this detector includes:
the device comprises a pressure head driving mechanism, a control device and a displacement detection component; wherein,
the pressure head driving mechanism consists of a driving device and a pressure head driven by the driving device through a transmission mechanism;
the control device is electrically connected with the driving device of the pressure head driving mechanism;
the pressure head driving mechanism is provided with a displacement detection component which measures the displacement of the pressure head and the extension of a tension spring of the transmission mechanism and outputs the displacement by an electric signal.
2. The remanufactured part coating bond strength gauge of claim 1, wherein the ram drive mechanism comprises:
the device comprises a screw, a nut, a tension spring, an inclined block, a pressure spring and a guide rail; wherein,
one end of the screw is connected with the power output end of the driving device;
the nut is movably sleeved on the screw rod;
the front end of the nut is connected with the tension spring;
the front end of the tension spring is connected with the inclined block;
the nut and the inclined block are both arranged on a straight guide rail and can slide linearly along the guide rail;
and a pressure head mounting position is arranged on the inclined plane at the top of the inclined block, a pressure spring is arranged at the pressure head mounting position, and the pressure spring is sleeved on a pressure head mounted on the pressure head mounting position.
3. The remanufactured part coating bond strength gauge of claim 1 or 2, further comprising:
the shell, pressure head actuating mechanism's drive arrangement, drive mechanism and pressure head all set up in the shell, and the pressure head stretches out on the lateral wall of shell front end, and the shell afterbody is equipped with the handle part.
4. The remanufactured part coating bond strength test instrument of claim 3 wherein a retaining ring is disposed at a central portion of the housing.
5. The remanufactured part coating bond strength gauge of claim 3, further comprising:
the supporting mechanism comprises a supporting column and a measured object supporting platform; wherein, the upper end of the supporting column is provided with a mounting position for mounting the pressure head driving mechanism; the tested object supporting platform is arranged in the middle of the supporting column and corresponds to a pressure head of a pressure head driving mechanism arranged in the mounting position at the upper end of the supporting column.
6. The remanufactured part coating bond strength gauge of claim 1, wherein the ram drive mechanism drive device comprises a servo motor.
7. The remanufactured part coating bond strength gauge of claim 1, further comprising:
the acoustic emission device, acoustic emission device's acoustic emission probe sets up on the testee of pressure head department, and acoustic emission device's host computer is connected with the acoustic emission probe.
8. The remanufactured part coating bond strength gauge of claim 1, wherein the ram of the ram drive mechanism comprises:
a diamond indenter or a tungsten carbide indenter;
the tungsten carbide pressure head is a spherical pressure head, and the diameter of the tungsten carbide pressure head is 3mm, 4mm or 5 mm.
9. The remanufactured part coating bond strength monitor of claim 1 wherein the displacement sensing member is a displacement transducer.
10. The remanufactured part coating bond strength gauge of claim 1, further comprising: and the processing and displaying device is connected with the displacement detection part and is used for processing the electric signal output by the displacement detection part to obtain a detection result and displaying and outputting the detection result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100026680A CN103196824A (en) | 2012-01-06 | 2012-01-06 | Remanufactured part coat bonding strength detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100026680A CN103196824A (en) | 2012-01-06 | 2012-01-06 | Remanufactured part coat bonding strength detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103196824A true CN103196824A (en) | 2013-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100026680A Pending CN103196824A (en) | 2012-01-06 | 2012-01-06 | Remanufactured part coat bonding strength detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103196824A (en) |
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| CN103760102A (en) * | 2014-01-07 | 2014-04-30 | 天津工程机械研究院 | Detection instrument for bonding strength of ferromagnetic coating of remanufactured parts |
| CN103884580A (en) * | 2014-03-20 | 2014-06-25 | 安徽再制造技术研究院有限公司 | Remanufactured part detector |
| CN104807752A (en) * | 2015-05-14 | 2015-07-29 | 昆山市建设工程质量检测中心 | Special cutting device for testing wall body heat insulation bonding intensity and testing method |
| CN104865183A (en) * | 2015-06-11 | 2015-08-26 | 中国人民解放军装甲兵工程学院 | Coating bonding strength measurement method |
| CN106053340A (en) * | 2016-07-14 | 2016-10-26 | 广东电网有限责任公司电力科学研究院 | Bonding strength testing device |
| CN106442319A (en) * | 2016-12-06 | 2017-02-22 | 浙江工业大学 | Surface grinding testing machine |
| CN108700502A (en) * | 2015-12-07 | 2018-10-23 | 赛世铁克 | The method and engagement tester equipment of intensity for determining engagement and/or material |
| CN111175224A (en) * | 2020-02-25 | 2020-05-19 | 江苏徐工工程机械研究院有限公司 | Device and method for testing anti-stripping performance of coating |
| CN112345386A (en) * | 2020-09-21 | 2021-02-09 | 国网河北省电力有限公司邢台供电分公司 | Cable performance comprehensive testing device |
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| CN112345386B (en) * | 2020-09-21 | 2022-09-27 | 国网河北省电力有限公司邢台供电分公司 | Cable performance comprehensive testing device |
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Application publication date: 20130710 |