CN105345224A - Metal surface repairing method and device - Google Patents
Metal surface repairing method and device Download PDFInfo
- Publication number
- CN105345224A CN105345224A CN201510979210.4A CN201510979210A CN105345224A CN 105345224 A CN105345224 A CN 105345224A CN 201510979210 A CN201510979210 A CN 201510979210A CN 105345224 A CN105345224 A CN 105345224A
- Authority
- CN
- China
- Prior art keywords
- metal
- metal surface
- restorative procedure
- workpiece
- metal electrode
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
The invention discloses a metal surface repairing method and device. The method comprises steps as follows: a high frequency inverter power supply is adopted to produce narrow pulse and high current isolated with an input power supply; a current loop is formed with the surface of a metal workpiece through rotation of a metal electrode, so that spark discharge is generated between the metal electrode and the surface of the metal workpiece, transient high energy is formed, the metal electrode is heated instantaneously in a contact area and gets to the surface of a defective part of the to-be-repaired metal workpiece through deposition and surfacing, good metallurgical bonding is formed, and the surface of the defective part of the to-be-repaired metal workpiece is repaired. The device comprises a control cabinet, a circuit board, an inerter power supply, an input power supply socket, a rotary welding gun, a wire clip, a panel, a power switch, an emergency braking switch, a display screen and adjusting knobs, wherein the rotary welding gun is equipped with the metal electrode and is provided with an argon nozzle used for protecting the metal surface from oxidation. The metal surface repairing method and device have the advantages of high repairing efficiency, reliable performance, small size, light weight and capacity of avoiding an arc welding effect.
Description
Technical field
The present invention relates to a kind of metal surface restorative procedure and a kind of repairing device for metal surface.
Background technology
Metal surface prosthetic appliance, is mainly used in repairing the defect of surface of workpiece, the wearing and tearing of die surface and overproof etc.It has in process can not produce thermal stress, indeformable, without the need to the advantage such as heat-treating, be a comparatively ideal metal surface prosthetic appliance.At present, on market, the general repairing device for metal surface being provided with Industrial Frequency Transformer isolation that adopts is repaired metal surface, thus metal surface is repaired.But because the volume and weight of power frequency isolation transformer is large, therefore, also increase the volume and weight of repairing device for metal surface.In addition, in the restorative procedure of metal surface, the general mode of single controllable silicon to capacitor discharge that adopt produces pulse current, thus causes the shutoff exporting pulse current unreliable, produces arc-welding effect sometimes in work due to the problem of the silicon controlled angle of flow.
Summary of the invention
Technical problem to be solved by this invention is, provides the metal surface restorative procedure that a kind of remediation efficiency is high, can avoid arc-welding effect.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of metal surface restorative procedure, comprises the following steps: first, adopts high frequency inverter to produce the pulse current of isolating with input power; Secondly, current loop is formed by rotating metallic electrode and surface of workpiece, thus spark discharge is produced between the burst pulse, hundreds of ampere to the electrode and surface of workpiece of the big current of a few kiloampere of the adjustable 1 μ s-50 μ s of metal, it is made to form transient state high energy, at contact area by metal electrode transient heating, make metal electrode surfacing to metal works rejected region to be repaired surface, form good metallurgical binding, repaired to make metal works rejected region surface.
Further, metal surface provided by the invention restorative procedure, the frequency of adjustable pulse current is 50 hertz of-1500 hertz of continuously adjustabe.
Further, instantaneously heated for metal electrode temperature range is 8000 DEG C-25000 DEG C at contact area by metal surface provided by the invention restorative procedure.
Further, metal surface provided by the invention restorative procedure, the rotary speed of metal electrode is 50r/min-1000r/min continuously adjustabe.
Further, metal surface provided by the invention restorative procedure, in weld deposit process, uses argon gas to output to surface of workpiece, to prevent surface of workpiece from forming oxide layer, and the quality of repairing with guarantee fund's metal surface.
Further, metal surface provided by the invention restorative procedure, the peak value of described pulse current is 100 amperes-1500 amperes.
Further, metal surface provided by the invention restorative procedure, adopts double-thyristor symmetrical operation mode to substitute the pulse current of single controllable silicon one-way conduction generation burst pulse, big current.
Metal surface provided by the invention restorative procedure, during use, wire clamp is contacted with metal works to be repaired and connects, the big current of the burst pulse of adjustable 1 μ s-50 μ s isolate with input power, hundreds of ampere extremely a few kiloampere is exported by high frequency inverter, rotating metallic electrode makes metal electrode and metal surface form current loop, thus repairs the surface of metal works defect.Compared with prior art, present invention employs the burst pulse of adjustable 1 μ s-50 μ s, hundreds of ampere to the big current of a few kiloampere, after requiring adjustment pulse current frequency and peak value according to different metal materials, metal surface is repaired, thus reparation speed and the quality of metal surface can be improve.Metal surface of the present invention restorative procedure is applicable to the repair and intensify of all kinds of metal parts, the repair and intensify such as overproof, wearing and tearing of all kinds of mould, the reparation such as defect, trachoma of hot investment casting, and aero-engine titanium alloy and high temperature alloy carburizing etc.In addition, the present invention adopts high frequency inverter to substitute traditional power frequency isolation transformer, thus efficiently reduces the volume and weight of the repairing device for metal surface adopting this metal surface restorative procedure configuration.Because welding process have employed the burst pulse of 1 μ s-50 μ s, hundreds of ampere to the big current of a few kiloampere, therefore avoid the generation of arc-welding effect, and the surface of workpiece be repaired can not produce overheated and distortion.
In order to solve the problems of the technologies described above, the present invention also provides a kind of remediation efficiency high, dependable performance, volume is little, lightweight, the repairing device for metal surface that life-span is long, the control cabinet of circuit board is provided with in comprising, described circuit board is electrically connected with inverter, input power plug is led in described control cabinet, rotary welding gun and wire clamp, described control cabinet comprises panel, described panel is provided with the power switch be electrically connected with circuit board, emergency stop switch, display screen, adjusting knob, described rotary welding gun is provided with metal electrode and is provided with for preventing the argon gas shower nozzle protecting metal surface oxidized.
Further, repairing device for metal surface provided by the invention, described adjusting knob comprises pulse current frequency adjusting knob, the peak value adjusting knob of pulse current, welding temperature adjusting knob.
Further, repairing device for metal surface provided by the invention, described metal electrode is welding rod.
Further, repairing device for metal surface provided by the invention, the outer surface of described control cabinet is provided with handle.
Compared with prior art, repairing device for metal surface of the present invention adopts high frequency inverter to substitute traditional power frequency isolation transformer, thus efficiently reduces the volume and weight of repairing device for metal surface.
Accompanying drawing explanation
Fig. 1 is the structural representation of the repairing device for metal surface of one embodiment of the invention;
Fig. 2 is the frame principle figure with circuit board connector part in one embodiment of the invention;
Fig. 3 is the catenation principle figure of rotary welding gun of the present invention and argon gas shower nozzle.
Shown in figure: 1, rotary welding gun, 2, wire clamp, 3, handle, 4, emergency stop switch, 5, control cabinet, 6, power switch, 7, display screen, 8, adjusting knob, 9, input power plug, 10, panel, 11, argon gas shower nozzle, 51, circuit board, 52, inverter.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail:
Embodiment one
The present embodiment one provides a kind of metal surface restorative procedure, comprises the following steps:
First, high frequency inverter is adopted to produce the pulse current of the burst pulse of adjustable 1 μ s-50 μ s isolate with input power, the hundreds of ampere extremely big current of a few kiloampere; Wherein, the frequency of adjustable pulse current is 50 hertz of-1500 hertz of continuously adjustabe; The peak value of described big current is 100 amperes-1500 amperes;
Secondly, current loop is formed by rotating metallic electrode and surface of workpiece, thus spark discharge is produced between metal electrode and surface of workpiece, it is made to form transient state high energy, at contact area by metal electrode transient heating to 8000 DEG C-25000 DEG C, make metal electrode surfacing to metal works rejected region to be repaired surface, form good metallurgical binding, repaired to make metal works rejected region surface.
The metal surface restorative procedure that the present embodiment provides, during use, according to metal material to be repaired, the frequency of regulating impulse battery and peak value, wire clamp is contacted with metal works to be repaired and connects, exported the big current of the burst pulse of adjustable 1 μ s-50 μ s isolate with input power, hundreds of ampere extremely a few kiloampere by high frequency inverter, rotating metallic electrode makes metal electrode and metal surface form current loop, thus repairs the surface of metal works defect.Compared with prior art, present invention employs the burst pulse of adjustable 1 μ s-50 μ s, hundreds of ampere to the big current of a few kiloampere, after requiring adjustment pulse current frequency and peak value according to different metal materials, metal surface is repaired, thus reparation speed and the quality of metal surface can be improve.Metal surface of the present invention restorative procedure is applicable to the repair and intensify of all kinds of metal parts, the repair and intensify such as overproof, wearing and tearing of all kinds of mould, the reparation such as defect, trachoma of hot investment casting, and aero-engine titanium alloy and high temperature alloy carburizing etc.In addition, the present invention adopts high frequency inverter to substitute traditional power frequency isolation transformer, thus efficiently reduces the volume and weight of the repairing device for metal surface adopting this metal surface restorative procedure configuration.Because welding process have employed the burst pulse of 1 μ s-50 μ s, hundreds of ampere to the big current of a few kiloampere, therefore avoid the generation of arc-welding effect, and the surface of workpiece be repaired can not produce overheated and distortion.
As preferably embodiment, metal surface provided by the invention restorative procedure, metal electrode is welding rod, and its rotary speed is 50r/min-1000r/min continuously adjustabe.In metal electrode weld deposit process, carry argon gas to surface of workpiece simultaneously, to prevent surface of workpiece from forming oxide layer, the quality of repairing with guarantee fund's metal surface.
As preferably embodiment, metal surface provided by the invention restorative procedure, adopt double-thyristor symmetrical operation mode to substitute pulse current that single controllable silicon one-way conduction produces burst pulse, big current.Double-thyristor symmetrical operation mode, improves the reliability that the pulse power produces, thus avoids arc-welding effect, improve the repairing quality of metal working surface.
Embodiment two
Please refer to Fig. 1-3, the present embodiment two provides a kind of repairing device for metal surface, the control cabinet 5 of circuit board 51 is provided with in comprising, described circuit board 51 is electrically connected with inverter 52, input power plug 9 is led in described control cabinet 5, rotary welding gun 1 and wire clamp 2, described control cabinet 5 comprises panel 10, described panel 10 is provided with the power switch 6 be electrically connected with circuit board 51, emergency stop switch 4, display screen 7, adjusting knob 8, wherein, described adjusting knob 8 comprises pulse current frequency adjusting knob, the peak value adjusting knob of pulse current, welding temperature adjusting knob, described rotary welding gun 1 is provided with metal electrode and is provided with for preventing the argon gas shower nozzle 11 protecting metal surface oxidized.Argon gas shower nozzle 11 adopts removable mode to be connected on rotary welding gun 1.Thering is provided of argon gas flows to argon gas shower nozzle 11 by independent gas apparatus, the installation of rotary welding gun 1 and metal electrode, and can be clamping, also can be grafting.
The display screen 7 of the present embodiment two can be charactron, also can be pointer gauge, can also be LCDs.The parameter of frequency adjustment knob, peak value adjusting knob, welding temperature adjusting knob adjustment, can show in a display screen 7, also can be each knob by an independent display screen 7 presentation parameter information.
Please refer to Fig. 1, the conveniently movement of repairing device for metal surface, is provided with handle 3 at the outer surface of control cabinet 5, in present embodiment, handle 3 is arranged on the top of control cabinet 5, and be provided with two handles 3, so that both hands carrying this repairing device for metal surface mobile.The core component of the inverter 52 of the present embodiment is contravariant transformer, to realize the isolation with input power.
The present embodiment two have employed the metal surface restorative procedure in embodiment one, there is the effect of the generation avoiding arc-welding effect equally, and the present embodiment have employed high frequency inverter and substitutes traditional power frequency isolation transformer, thus efficiently reduce the volume and weight of the repairing device for metal surface adopting this metal surface restorative procedure configuration.
Metal surface of the present invention restorative procedure and device, REPAIR WELDING process is good metallurgical binding, weld layer and workpiece adhesion strong; Workpiece to be machined input low in calories, can not produce thermal burn, indeformable, without thermal stress change, without the need to heat-treating; Welding process has argon shield, makes it non-oxidation layer, and sedimentary deposit can control according to workpiece instructions for use thickness; Welding material can be selected according to the requirement of workpiece to be machined, and range of choice is more extensive; Have superior weldering property again, weld layer can carry out machining simultaneously; Equipment simple to operate, running cost is low, has wide range of applications.
The invention is not restricted to above-mentioned detailed description of the invention, all various changes done in the spirit and scope of claims of the present invention, all within protection scope of the present invention.
Claims (10)
1. a metal surface restorative procedure, is characterized in that, comprises the following steps:
First, high frequency inverter is adopted to produce the pulse current of the burst pulse of adjustable 1 μ s-50 μ s isolate with input power, the hundreds of ampere extremely big current of a few kiloampere;
Secondly, current loop is formed by rotating metallic electrode and surface of workpiece, thus spark discharge is produced between metal electrode and surface of workpiece, it is made to form transient state high energy, at contact area by metal electrode transient heating, make metal electrode surfacing to metal works rejected region to be repaired surface, form good metallurgical binding, repaired to make metal works rejected region surface.
2. metal surface as claimed in claim 1 restorative procedure, it is characterized in that, the frequency of adjustable pulse current is 50 hertz of-1500 hertz of continuously adjustabe.
3. metal surface as claimed in claim 1 restorative procedure, is characterized in that, is 8000 DEG C-25000 DEG C at contact area by instantaneously heated for metal electrode temperature range.
4. metal surface as claimed in claim 1 restorative procedure, it is characterized in that, the rotary speed of metal electrode is 50r/min-1000r/min continuously adjustabe.
5. metal surface as claimed in claim 1 restorative procedure, is characterized in that, in weld deposit process, uses argon gas to output to surface of workpiece, to prevent surface of workpiece from forming oxide layer, and the quality of repairing with guarantee fund's metal surface.
6. metal surface as claimed in claim 1 restorative procedure, it is characterized in that, the peak value of described pulse current is 100 amperes-1500 amperes.
7. metal surface as claimed in claim 1 restorative procedure, is characterized in that, adopts double-thyristor symmetrical operation mode to substitute the pulse current of single controllable silicon one-way conduction generation burst pulse, big current.
8. a repairing device for metal surface; the control cabinet of circuit board is provided with in comprising; it is characterized in that; described circuit board is electrically connected with inverter; input power plug, rotary welding gun and wire clamp is led in described control cabinet; described control cabinet comprises panel; described panel is provided with the power switch, emergency stop switch, display screen, the adjusting knob that are electrically connected with circuit board, and described rotary welding gun is provided with metal electrode and is provided with for preventing the argon gas shower nozzle protecting metal surface oxidized.
9. repairing device for metal surface as claimed in claim 8, it is characterized in that, described adjusting knob comprises pulse current frequency adjusting knob, the peak value adjusting knob of pulse current, welding temperature adjusting knob.
10. repairing device for metal surface as claimed in claim 7, it is characterized in that, the outer surface of described control cabinet is provided with handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510979210.4A CN105345224A (en) | 2015-12-23 | 2015-12-23 | Metal surface repairing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510979210.4A CN105345224A (en) | 2015-12-23 | 2015-12-23 | Metal surface repairing method and device |
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| Publication Number | Publication Date |
|---|---|
| CN105345224A true CN105345224A (en) | 2016-02-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510979210.4A Pending CN105345224A (en) | 2015-12-23 | 2015-12-23 | Metal surface repairing method and device |
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| Country | Link |
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| CN (1) | CN105345224A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253736A (en) * | 2016-08-30 | 2016-12-21 | 合肥博雷电气有限公司 | A kind of pulsed high-frequency supply unit |
| CN108637511A (en) * | 2018-05-03 | 2018-10-12 | 河南科技大学 | Surfacing equipment and its gas shield device for electric spark deposition |
| CN111005025A (en) * | 2020-01-08 | 2020-04-14 | 江苏久祥汽车电器集团有限公司 | Preparation method of high-temperature wear-resistant coating for automobile valve mold |
| CN112756743A (en) * | 2021-02-09 | 2021-05-07 | 河南科技大学 | Automatic control device and control method for contact force-to-displacement conversion of electric spark deposition overlaying welding |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994025214A1 (en) * | 1993-04-28 | 1994-11-10 | Advanced Surfaces And Processes, Inc. | Method and apparatus for pulse fusion surfacing |
| CN2696761Y (en) * | 2004-02-24 | 2005-05-04 | 大连大工中金工程技术有限公司 | Strengthening repairing machine for surface of metal piece |
| CN201064849Y (en) * | 2007-08-03 | 2008-05-28 | 赵永民 | Circuit for metal repairing cold welding machine |
| CN201366565Y (en) * | 2009-03-16 | 2009-12-23 | 东莞市富森机电设备有限公司 | Cold welding machine |
| CN101637844A (en) * | 2008-07-30 | 2010-02-03 | 株式会社大亨 | Surfacing welding method of inco chrome nickel of AC pulse arc welding |
| CN103801797A (en) * | 2012-11-09 | 2014-05-21 | 上海市闵行区知识产权保护协会 | Repairing machine |
-
2015
- 2015-12-23 CN CN201510979210.4A patent/CN105345224A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994025214A1 (en) * | 1993-04-28 | 1994-11-10 | Advanced Surfaces And Processes, Inc. | Method and apparatus for pulse fusion surfacing |
| CN2696761Y (en) * | 2004-02-24 | 2005-05-04 | 大连大工中金工程技术有限公司 | Strengthening repairing machine for surface of metal piece |
| CN201064849Y (en) * | 2007-08-03 | 2008-05-28 | 赵永民 | Circuit for metal repairing cold welding machine |
| CN101637844A (en) * | 2008-07-30 | 2010-02-03 | 株式会社大亨 | Surfacing welding method of inco chrome nickel of AC pulse arc welding |
| CN201366565Y (en) * | 2009-03-16 | 2009-12-23 | 东莞市富森机电设备有限公司 | Cold welding machine |
| CN103801797A (en) * | 2012-11-09 | 2014-05-21 | 上海市闵行区知识产权保护协会 | Repairing machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253736A (en) * | 2016-08-30 | 2016-12-21 | 合肥博雷电气有限公司 | A kind of pulsed high-frequency supply unit |
| CN108637511A (en) * | 2018-05-03 | 2018-10-12 | 河南科技大学 | Surfacing equipment and its gas shield device for electric spark deposition |
| CN111005025A (en) * | 2020-01-08 | 2020-04-14 | 江苏久祥汽车电器集团有限公司 | Preparation method of high-temperature wear-resistant coating for automobile valve mold |
| CN111005025B (en) * | 2020-01-08 | 2020-11-03 | 江苏久祥汽车电器集团有限公司 | Preparation method of high-temperature wear-resistant coating for automobile valve mold |
| CN112756743A (en) * | 2021-02-09 | 2021-05-07 | 河南科技大学 | Automatic control device and control method for contact force-to-displacement conversion of electric spark deposition overlaying welding |
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Application publication date: 20160224 |
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