CN103290408B - The laser repair method of blanking die - Google Patents
The laser repair method of blanking die Download PDFInfo
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- CN103290408B CN103290408B CN201310267081.7A CN201310267081A CN103290408B CN 103290408 B CN103290408 B CN 103290408B CN 201310267081 A CN201310267081 A CN 201310267081A CN 103290408 B CN103290408 B CN 103290408B
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Abstract
The present invention relates to a kind of laser repair method of blanking die, the surface of blanking die to be repaired is processed, detects analysis, remove the fatigue layer of abrading section; First built-up welding is carried out to the corner angle of blanking die, then built-up welding is carried out to the plane on blanking die, carry out built-up welding to the step place on blanking die again, built-up welding adopts the mode of preset powder feeding, is that light source carries out lap connection scanning to mould with fast-transverse-flow CO2 laser.The component of the powdered alloy adopted and weight percent content are C≤0.1%, Cr:6% to 8%, B:1.5% to 2.5%, Si:1% to 2%, Mo:0.8% to 1%, Mn:5% to 7%, W:2% to 4%, V:2% to 6%, TiO
2: 5% to 10%, all the other are Fe.The laser repair method of blanking die of the present invention carries out laser melting coating to the surface of blanking die, and the size of its surface hardness and abrading section can be made to reach service 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 be arranged on pressing machine to apply pressure to material, makes it produce separation or viscous deformation, thus obtains a kind of pressure processing method of required part.Press tool is requisite tooling in punching production, is technological-intensive product.The quality of stamping parts, production efficiency and production cost etc., have direct relation with die design and manufacture.Press tool is divided into blanking die, piercing die, bending die, Drawing Die, flaring die etc. according to technological property, these press tools are are all inevitably worn and torn in the course of the work, but because each mould role is different, stressing conditions during punching press is different, and the degree of wear in working process and wearing character are also different.Carry out die surface reparation by common overlaying method, the shortcomings such as deflection is large, hardness is not enough, easy to crack can be brought.And different moulds should select more suitable renovation technique according to its characteristic, otherwise the mold use life-span cannot be protected, and can have a strong impact on mold use precision, cause produced quality product to decline.
Laser melting coating refers to and is made it to melt with matrix surface skim through laser irradiation by coated material cladding matrix surface placed by selecting with different adding material modes simultaneously, and it is extremely low to form extent of dilution after rapid solidification, the top coat of metallurgical binding is become with matrix, the remarkable processing method improving the wear-resisting, anti-corrosion, heat-resisting, anti-oxidant of substrate surface and electrical specification, thus reach the object 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 matrix is combined, be applicable to that cladding material is many, granularity and the feature such as content is large.How laser melting and coating technique being effectively applied to the reparation of blanking die, is the problem that those skilled in the art needs to solve.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of surface to blanking die and carries out laser melting coating, makes the size of its surface hardness and abrading section reach the laser repair method of the blanking 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 blanking die, comprise following concrete steps:
The first step, the surface of blanking die to be repaired to be processed;
Second step, carry out detection analyze, determine abrading section and abrasion loss thereof;
The fatigue layer of the 3rd step, removal abrading section;
4th step, detection analytical results according to blanking die, programme to the die cavity of abrading section, formulates processing parameter;
5th step, first built-up welding is carried out to the corner angle of blanking die, then built-up welding is carried out to the plane on blanking die, then built-up welding is carried out to the step place on blanking die, in weld deposit process, constantly evenly knock mould alloy cladding layer, built-up welding adopts the mode of preset powder feeding, be that light source carries out lap connection scanning to mould with fast-transverse-flow CO2 laser, , laser power is 1200W to 1400W, spot size is 12mm × 1.8mm, laser apparatus is 255mm to 265mm from the distance between Substrate, sweep velocity is 150mm/min to 180mm/min, amount of lap is 4.5mm, powder sending quantity is 8g/min to 11g/min, the component of the powdered alloy adopted and weight percent content are C≤0.1%, Cr:6% to 8%, B:1.5% to 2.5%, Si:1% to 2%, Mo:0.8% to 1%, Mn:5% to 7%, W:2% to 4%, V: 2% to 6%, TiO
2: 5% to 10%, all the other are Fe,
6th step, detection surface hardness and deflection, carry out mechanical workout, permeation flaw detection to the blanking die after repairing.
The mass percentage content of the above-mentioned Mn stated in powdered alloy is 5.6% to 6.6%.
The mass percentage content of the W in above-mentioned powdered alloy is 2.8% to 3.5%.
The mass percentage content of the V in above-mentioned powdered alloy is 4.2% to 5.8%.
TiO in above-mentioned powdered alloy
2mass percentage content be 6.3% to 8.7%.
The beneficial effect that the present invention brings is: the laser repair method of blanking die of the present invention have selected suitable powdered alloy according to the wearing character of blanking die and carries out built-up welding, the content of strict control C, be conducive to the wettability improving cladding layer, prevent from cracking in cladding process and pore, adding appropriate B, Si makes alloy form matrix based on austenite after solidification, utilizes appropriate Cr, Mn, W, Mo, V, TiO
2carry out alloy strengthening to ferrous alloy, even if C content is lower, the hardness of cladding layer also can reach more than 55.5HRC, fully meets the hardness requirement that mould uses, and has very high wear resistance.Adopt the mode of preset powder feeding in addition, strictly control powder sending quantity, and laser power, sweep velocity, amount of lap etc. are optimized, such that the homogeneity of structure of cladding layer is good, thickness and hardness even.The method did not need to carry out preheating to mould before built-up welding, without the need to annealing to mould after built-up welding, effectively can control the distortion of mould, and heat can be avoided to concentrate generation thermal stresses by carrying out laser melting coating in an orderly manner everywhere, be conducive to reducing distortion further, improve hardness and the wear resistance of mould.
Embodiment
Embodiment 1
The concrete steps of the laser repair method of the blanking die of the present embodiment are as follows:
The first step, the surface of blanking die to be repaired to be processed, by removings such as the dust on blanking die, greasy dirt, corrosions.
Second step, carry out detection and analyze, original working conditions, hardness and the mechanical property parameters of record blanking die, detects the size at each position of blanking die, determines abrading section and abrasion loss thereof.
3rd step, remove the right angle of abrading section by polishing, remove the fatigue layer of abrading section, and clean.
4th step, detection analytical results according to blanking die, programme (numerical control machining simulation system that programming can use Mitsubishi) to the die cavity of abrading section, formulate processing parameter.
5th step, first built-up welding is carried out to the corner angle of blanking die, then built-up welding is carried out to the plane on blanking die, then built-up welding is carried out to the step place on blanking die, in weld deposit process, constantly evenly knock mould alloy cladding layer with mallet.Built-up welding adopts the mode of preset powder feeding, is that light source carries out lap connection scanning to mould with fast-transverse-flow CO2 laser.Laser power is 1400W, and spot size is 12mm × 1.8mm, and laser apparatus is 265mm from the distance between Substrate, and sweep velocity is 150mm/min, and amount of lap is 4.5mm, and powder sending quantity is 8g/min.The component of the powdered alloy adopted and weight percent content are C:0.08%, Cr:7.2%, B:2%, Si:1.5%, Mo:1%, Mn:6.5%, V: 4.5%, W:3.2%, TiO
2: 8.1%, all the other are Fe.
6th step, detection surface hardness and deflection, carry out mechanical workout, permeation flaw detection to the blanking die after repairing.
Mean value through the surface hardness of the blanking die of the laser repair method reparation of the blanking die of the present embodiment reaches 57.3 HRC, and the hardness Schwellenwert in all check points is 56.1HRC.
Embodiment 2
The rest part of the laser repair method of the blanking die of the 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 Substrate, sweep velocity is 160mm/min, amount of lap is 4.5mm, and powder sending quantity is 10g/min.The component of the powdered alloy adopted and weight percent content are C:0.06%, Cr:6.6%, B:1.8%, Si:1.2%, Mo:0.9%, 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 blanking die of the laser repair method reparation of the blanking die of the present embodiment reaches 57.6HRC, and the hardness Schwellenwert in all check points is 55.9HRC.
Embodiment 3
The rest part of the laser repair method of the blanking die of the 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 Substrate, sweep velocity is 170mm/min, amount of lap is 4.5mm, and powder sending quantity is 11g/min.The component of the powdered alloy adopted and weight percent content are C:0.09%, Cr:7.6%, B:2.2%, Si:1.8%, Mo:0.8%, 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 blanking die of the laser repair method reparation of the blanking die of the present embodiment reaches 57.5 HRC, and the hardness Schwellenwert in all check points is 56.3HRC.
Obviously, above-described embodiment is only for example of the present invention is clearly described, and is not the 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 exhaustive without the need to also giving all embodiments.And these belong to spirit institute's apparent change of extending out of the present invention or change and are still among protection scope of the present invention.
Claims (5)
1. a laser repair method for blanking die, comprises following concrete steps:
The first step, the surface of blanking die to be repaired to be processed;
Second step, carry out detection analyze, determine abrading section and abrasion loss thereof;
The fatigue layer of the 3rd step, removal abrading section;
4th step, detection analytical results according to blanking die, programme to the die cavity of abrading section, formulates processing parameter;
5th step, first built-up welding is carried out to the corner angle of blanking die, then built-up welding is carried out to the plane on blanking die, then built-up welding is carried out to the step place on blanking die, in weld deposit process, constantly evenly knock mould alloy cladding layer, built-up welding adopts the mode of preset powder feeding, be that light source carries out lap connection scanning to mould with fast-transverse-flow CO2 laser, laser power is 1200W to 1400W, spot size is 12mm × 1.8mm, laser apparatus is 255mm to 265mm from the distance between Substrate, sweep velocity is 150mm/min to 180mm/min, amount of lap is 4.5mm, powder sending quantity is 8g/min to 11g/min, the component of the powdered alloy adopted and weight percent content are C≤0.1%, Cr:6% to 8%, B:1.5% to 2.5%, Si:1% to 2%, Mo:0.8% to 1%, Mn:5% to 7%, W:2% to 4%, V: 2% to 6%, TiO
2: 5% to 10%, all the other are Fe,
6th step, detection surface hardness and deflection, carry out mechanical workout, permeation flaw detection to the blanking die after repairing.
2. the laser repair method of blanking die according to claim 1, is characterized in that: the mass percentage content of the Mn in described powdered alloy is 5.6% to 6.6%.
3. the laser repair method of blanking die according to claim 1, is characterized in that: the mass percentage content of the W in described powdered alloy is 2.8% to 3.5%.
4. the laser repair method of blanking die according to claim 1, is characterized in that: the mass percentage content of the V in described powdered alloy is 4.2% to 5.8%.
5. the laser repair method of blanking die according to claim 1, is characterized in that: the TiO in described powdered alloy
2mass percentage content be 6.3% to 8.7%.
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| CN201310267081.7A CN103290408B (en) | 2013-06-29 | 2013-06-29 | The laser repair method of blanking die |
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| CN201310267081.7A CN103290408B (en) | 2013-06-29 | 2013-06-29 | The laser repair method of blanking die |
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| CN103290408B true CN103290408B (en) | 2015-08-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104831272A (en) * | 2015-05-09 | 2015-08-12 | 芜湖鼎瀚再制造技术有限公司 | Laser heat-treatment process for die |
| CN106825264A (en) * | 2017-04-20 | 2017-06-13 | 重庆大学 | A kind of insert manufacture method and method for repairing and mending for hot stamping die |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002707A (en) * | 2010-11-25 | 2011-04-06 | 秦皇岛洪川实业有限公司 | Laser repairing method of damaged finishing roller |
| CN102732831A (en) * | 2012-07-18 | 2012-10-17 | 丹阳宏图激光科技有限公司 | Laser repairing process for automobile mold |
| CN102828181A (en) * | 2012-09-20 | 2012-12-19 | 丹阳宏图激光科技有限公司 | Laser cladding repair process for cross shafts |
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2013
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002707A (en) * | 2010-11-25 | 2011-04-06 | 秦皇岛洪川实业有限公司 | Laser repairing method of damaged finishing roller |
| CN102732831A (en) * | 2012-07-18 | 2012-10-17 | 丹阳宏图激光科技有限公司 | Laser repairing process for automobile mold |
| CN102828181A (en) * | 2012-09-20 | 2012-12-19 | 丹阳宏图激光科技有限公司 | Laser cladding repair process for cross shafts |
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