CN103343339A - Laser restoration method for drawing die - Google Patents
Laser restoration method for drawing die Download PDFInfo
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- CN103343339A CN103343339A CN2013102670770A CN201310267077A CN103343339A CN 103343339 A CN103343339 A CN 103343339A CN 2013102670770 A CN2013102670770 A CN 2013102670770A CN 201310267077 A CN201310267077 A CN 201310267077A CN 103343339 A CN103343339 A CN 103343339A
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Abstract
The invention relates to a laser restoration method for a drawing die. The laser restoration method comprises the following steps of: carrying out treatment and detection analysis on the surface of the drawing die to be restored, and removing a fatigue layer at a worn part; carrying out surfacing on the worn part to form a first surfacing layer, and then carrying out the surfacing on the first surfacing layer to form a second surfacing layer, wherein the thickness of the first surfacing layer is 2mm-3mm, the thickness of the second surfacing layer is 2mm-3mm, and the surfacing adopts a preset powder-feeding mode and adopts a quick cross-flow carbon dioxide laser as a light source to carry out continuous overlapping and scanning on the die. The laser restoration method has the advantages that laser cladding is carried out on the surface of the drawing die, and the hardness of the surface and the size of the worn part can meet the use requirements.
Description
Technical field
The present invention relates to a kind of laser cladding method, especially a kind of laser melting coating restorative procedure of die surface.
Background technology
Punching press is at room temperature, utilizes the press tool that is installed on the pressing machine that material is exerted pressure, and makes it produce separation or viscous deformation, thereby obtains a kind of pressure processing method of required part.Press tool is requisite tooling in the punching production, is technological-intensive product.The quality of stamping parts, production efficiency and production cost etc. have direct relation with die design and manufacturing.Press tool is divided into blanking die, piercing die, bending die, Drawing Die, flaring die etc. according to technological property, these press tools all inevitably can be worn and torn in the course of the work, but because each mould role has nothing in common with each other, stressing conditions difference during punching press, the degree of wear and wearing character in the working process also have nothing in common with each other.Carry out the die surface reparation by common overlaying method, can bring shortcomings such as deflection is big, hardness is not enough, easy to crack.And different moulds should select more suitable renovation technique according to its characteristic, otherwise can't be protected the work-ing life of mould, can have a strong impact on the service precision of mould, causes the quality product of producing to descend.
Laser melting coating refers to made it to melt simultaneously with the matrix surface skim through laser irradiation by the selecteed coated material of cladding matrix surface placement with different adding material modes, and it is extremely low to form extent of dilution behind the rapid solidification, become the top coat of metallurgical binding with matrix, significantly improve the processing method of wear-resisting, anti-corrosion, heat-resisting, the anti-oxidant and electrical specification of substrate surface, thereby reach the purpose of surface modification or reparation.With built-up welding, spraying, plating and gas phase sediment-filled phase ratio, laser melting coating has that extent of dilution is little, dense structure, coating and characteristics such as matrix bond is good, be fit to that cladding material is many, granularity and content are big.How laser melting and coating technique effectively being applied to the reparation of Drawing Die, is the problem that those skilled in the art need solve.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of surface to Drawing Die and carries out laser melting coating, makes the size of its surface hardness and abrading section reach the laser repair method of the Drawing Die of service requirements.
In order to solve the problems of the technologies described above, the invention provides a kind of laser repair method of Drawing Die, comprise following concrete steps:
The first step, the surface of Drawing Die to be repaired is handled;
Second the step, detect analysis, determine abrading section and abrasion loss thereof;
The fatigue layer of the 3rd step, removal abrading section;
The 4th step, according to the detection analytical results of Drawing Die, the die cavity of abrading section is programmed, formulate processing parameter;
The 5th step, the abrading section is carried out built-up welding form first overlay cladding, form second overlay cladding in the enterprising windrow weldering of the first layer overlay cladding then, the thickness of described first overlay cladding is 2mm to 3mm, the thickness of described second overlay cladding is 2mm to 3mm, in weld deposit process, constantly evenly knock the mould alloy cladding layer; The mode of powder feeding that presets is adopted in built-up welding, be that light source overlaps scanning continuously to mould with the fast-transverse-flow CO, laser power is 1200W to 1400W, spot size is 12mm * 1.8mm, laser apparatus is 255mm to 265mm from the distance between the Substrate, sweep velocity is 150mm/min to 180mm/min, amount of lap is 4.5mm, and powder sending quantity is 8g/min to 11g/min, and the component of the powdered alloy that first overlay cladding adopts and weight percent content are C≤0.1%, Cr:15% to 19%, B:1.5% to 2.5%, Si:1% to 2%, Mo:0.8% to 1%, Mn:2% to 5%, all the other are Fe; The component of the powdered alloy that second overlay cladding adopts and weight percent content are C≤0.1%, Cr:9% to 12%, and B:1.5% to 2.5%, Si:1% to 2%, Mo:1.2% to 1.6%, Mn:5% to 7%, W:2% to 4%, V: 2% to 6%, TiO
2: 5% to 10%, all the other are Fe;
The 6th step, detection surface hardness and deflection carry out mechanical workout, permeation flaw detection to the Drawing Die after repairing.
The mass percentage content of Mn in the powdered alloy that above-mentioned second overlay cladding adopts is 5.6% to 6.6%.
The mass percentage content of W in the powdered alloy that above-mentioned second overlay cladding adopts is 2.8% to 3.5%.
The mass percentage content of V in the powdered alloy that above-mentioned second overlay cladding adopts is 4.2% to 5.8%.
TiO in the powdered alloy that above-mentioned second overlay cladding adopts
2Mass percentage content be 6.3% to 8.7%.
The beneficial effect that the present invention brings is: the laser repair method of Drawing Die of the present invention is lower according to wearing character elder generation built-up welding one deck hardness of Drawing Die, wear resistance is generally organized first overlay cladding comparatively fine and close, good uniformity, higher, the wear resistance of built-up welding one deck hardness second overlay cladding preferably on first overlay cladding again, still not cooling of first overlay cladding during second overlay cladding built-up welding, and both have all selected suitable powdered alloy to carry out built-up welding, wettability between two overlay claddings is good, in conjunction with tightr.The content of the strict control of the powdered alloy of second overlay cladding C, be conducive to improve the wettability of cladding layer, prevent from cladding process, cracking and pore, add an amount of B, Si and make alloy solidifying the matrix of back formation based on austenite, utilize proper C r, Mn, W, Mo, V, TiO
2Ferrous alloy is carried out alloy strengthening, even C content is lower, the hardness of cladding layer also can reach more than the 55.5HRC, has fully satisfied the hardness requirement that mould uses, and has had very high wear resistance.Adopt the mode of powder feeding that presets in addition, strict control powder sending quantity, and laser power, sweep velocity, amount of lap etc. are optimized makes that the homogeneity of structure of cladding layer is good, thickness and hardness is even.This method did not need mould is carried out preheating before built-up welding, after built-up welding, need not mould is annealed, can control the distortion of mould effectively, and can avoid heat to concentrate the generation thermal stresses by carry out laser melting coating in an orderly manner everywhere, be conducive to further reduce distortion, improve hardness and the wear resistance of mould.
Embodiment
Embodiment 1
The concrete steps of the laser repair method of the Drawing Die of present embodiment are as follows:
The first step, the surface of Drawing Die to be repaired is handled, with removings such as the dust on the Drawing Die, greasy dirt, corrosions.
Second goes on foot, detects analysis, original working conditions, hardness and the mechanical property parameters of record Drawing Die, and the size at each position of detection Drawing Die is determined abrading section and abrasion loss thereof.
The 3rd goes on foot, passes through the right angle that the abrading section is removed in polishing, removes the fatigue layer of abrading section, and cleans.
The 4th step, according to the detection analytical results of Drawing Die, the die cavity of abrading section is programmed (numerical control machining simulation system that programming can be used Mitsubishi), formulate processing parameter.
The 5th step, the abrading section is carried out built-up welding form first overlay cladding, form second overlay cladding in the enterprising windrow weldering of the first layer overlay cladding then, the thickness of described first overlay cladding is 3mm, the thickness of described second overlay cladding is 3mm, in weld deposit process, constantly evenly knock the mould alloy cladding layer with mallet.Built-up welding is adopted and is preset the mode of powder feeding, is that light source overlaps scanning continuously to mould with the fast-transverse-flow CO.Laser power is 1400W, and spot size is 12mm * 1.8mm, and laser apparatus is 265mm from the distance between the Substrate, and sweep velocity is 180mm/min, and amount of lap is 4.5mm, and powder sending quantity is 8g/min.The component of the powdered alloy that first overlay cladding adopts and weight percent content are C:0.07%, Cr:15.4%, and B:2.2%, Si:1.4%, Mo:0.8%, Mn:2.5%, all the other are Fe.The component of the powdered alloy that second overlay cladding adopts and weight percent content are C:0.08%, Cr:10.2%, B:2%, Si:1.5%, Mo:1.5%, Mn:6.5%, V: 4.5%, W:3.2%, TiO
2: 8.1%, all the other are Fe.
The 6th step, detection surface hardness and deflection carry out mechanical workout, permeation flaw detection to the Drawing Die after repairing.
Mean value through the surface hardness of the Drawing Die of the laser repair method reparation of the Drawing Die of present embodiment reaches 57.2HRC, and the hardness Schwellenwert in all check points is 55.7HRC.
Embodiment 2
The rest part of the laser repair method of the Drawing Die of present embodiment is identical with embodiment 1, difference is: laser power is 1200W, spot size is 12mm * 1.8mm, laser apparatus is 255mm from the distance between the Substrate, sweep velocity is 170mm/min, amount of lap is 4.5mm, and powder sending quantity is 10g/min.The component of the powdered alloy that first overlay cladding adopts and weight percent content are C:0.09%, Cr:17.5%, and B:1.7%, Si:1.1%, Mo:0.9%, Mn:3.4%, all the other are Fe.The component of the powdered alloy that second overlay cladding adopts and weight percent content are C:0.06%, Cr:11.6%, B:1.8%, Si:1.2%, Mo:1.3%, Mn:5.8%, V:5.3%, W:3.4%, TiO
2: 7.6%, all the other are Fe.
Mean value through the surface hardness of the Drawing Die of the laser repair method reparation of the Drawing Die of present embodiment reaches 57.3HRC, and the hardness Schwellenwert in all check points is 55.6HRC.
Embodiment 3
The rest part of the laser repair method of the Drawing Die of present embodiment is identical with embodiment 1, difference is: laser power is 1300W, spot size is 12mm * 1.8mm, laser apparatus is 260mm from the distance between the Substrate, sweep velocity is 180mm/min, amount of lap is 4.5mm, and powder sending quantity is 8g/min.The component of the powdered alloy that first overlay cladding adopts and weight percent content are C:0.05%, Cr:16.5%, and B:2%, Si:1.3%, Mo:0.8%, Mn:3.6%, all the other are Fe.The component of the powdered alloy that second overlay cladding adopts and weight percent content are C:0.09%, Cr:7.6%, B:2.2%, Si:1.8%, Mo:1.5%, Mn:5.9%, V: 4.8%, W:2.9%, TiO
2: 6.7%, all the other are Fe.
Mean value through the surface hardness of the Drawing Die of the laser repair method reparation of the Drawing Die of present embodiment reaches 57.4 HRC, and the hardness Schwellenwert in all check points is 55.7HRC.
Obviously, above-described embodiment only is for example of the present invention clearly is described, and is not to be restriction to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And these belong to apparent variation or the change that spirit of the present invention extended out and still are among protection scope of the present invention.
Claims (5)
1. the laser repair method of a Drawing Die comprises following concrete steps:
The first step, the surface of Drawing Die to be repaired is handled;
Second the step, detect analysis, determine abrading section and abrasion loss thereof;
The fatigue layer of the 3rd step, removal abrading section;
The 4th step, according to the detection analytical results of Drawing Die, the die cavity of abrading section is programmed, formulate processing parameter;
The 5th step, the abrading section is carried out built-up welding form first overlay cladding, form second overlay cladding in the enterprising windrow weldering of the first layer overlay cladding then, the thickness of described first overlay cladding is 2mm to 3mm, the thickness of described second overlay cladding is 2mm to 3mm, in weld deposit process, constantly evenly knock the mould alloy cladding layer; The mode of powder feeding that presets is adopted in built-up welding, be that light source overlaps scanning continuously to mould with the fast-transverse-flow CO, laser power is 1200W to 1400W, spot size is 12mm * 1.8mm, laser apparatus is 255mm to 265mm from the distance between the Substrate, sweep velocity is 150mm/min to 180mm/min, amount of lap is 4.5mm, and powder sending quantity is 8g/min to 11g/min, and the component of the powdered alloy that first overlay cladding adopts and weight percent content are C≤0.1%, Cr:15% to 19%, B:1.5% to 2.5%, Si:1% to 2%, Mo:0.8% to 1%, Mn:2% to 5%, all the other are Fe; The component of the powdered alloy that second overlay cladding adopts and weight percent content are C≤0.1%, Cr:9% to 12%, and B:1.5% to 2.5%, Si:1% to 2%, Mo:1.2% to 1.6%, Mn:5% to 7%, W:2% to 4%, V: 2% to 6%, TiO
2: 5% to 10%, all the other are Fe;
The 6th step, detection surface hardness and deflection carry out mechanical workout, permeation flaw detection to the Drawing Die after repairing.
2. the laser repair method of Drawing Die according to claim 1, it is characterized in that: the mass percentage content of the Mn in the powdered alloy that second overlay cladding adopts is 5.6% to 6.6%.
3. the laser repair method of Drawing Die according to claim 1, it is characterized in that: the mass percentage content of the W in the powdered alloy that second overlay cladding adopts is 2.8% to 3.5%.
4. the laser repair method of Drawing Die according to claim 1, it is characterized in that: the mass percentage content of the V in the powdered alloy that second overlay cladding adopts is 4.2% to 5.8%.
5. the laser repair method of Drawing Die according to claim 1 is characterized in that: the TiO in the powdered alloy that second overlay cladding adopts
2Mass percentage content be 6.3% to 8.7%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310267077.0A CN103343339B (en) | 2013-06-29 | 2013-06-29 | The laser repair method of Drawing Die |
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| CN201310267077.0A CN103343339B (en) | 2013-06-29 | 2013-06-29 | The laser repair method of Drawing Die |
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| CN103343339B CN103343339B (en) | 2015-10-07 |
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Cited By (2)
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| CN106350813A (en) * | 2016-09-06 | 2017-01-25 | 张家港清研再制造产业研究院有限公司 | Repair method of drawing die of back cover of roller washing machine |
| CN109487262A (en) * | 2018-09-04 | 2019-03-19 | 中国科学院近代物理研究所 | A kind of FeNi base laser melting coating doping tungsten carbide/chromium carbide compounded strengthens wear-resistant coating resistant to high temperatures and preparation method thereof |
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| CN109487262A (en) * | 2018-09-04 | 2019-03-19 | 中国科学院近代物理研究所 | A kind of FeNi base laser melting coating doping tungsten carbide/chromium carbide compounded strengthens wear-resistant coating resistant to high temperatures and preparation method thereof |
| CN109487262B (en) * | 2018-09-04 | 2020-12-04 | 中国科学院近代物理研究所 | FeNi-based laser cladding doped tungsten carbide/chromium carbide composite reinforced high-temperature-resistant wear-resistant coating and preparation method thereof |
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| CN103343339B (en) | 2015-10-07 |
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