CN102373468A - Wide-band laser-induced hybrid cladding restoration and surface strengthening method for dies - Google Patents
Wide-band laser-induced hybrid cladding restoration and surface strengthening method for dies Download PDFInfo
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- CN102373468A CN102373468A CN2010102592034A CN201010259203A CN102373468A CN 102373468 A CN102373468 A CN 102373468A CN 2010102592034 A CN2010102592034 A CN 2010102592034A CN 201010259203 A CN201010259203 A CN 201010259203A CN 102373468 A CN102373468 A CN 102373468A
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Abstract
A wide-band laser-induced hybrid cladding repairing and surface strengthening method for dies is characterized in that a Ni based alloy powder for wide-band laser-induced hybrid cladding is used to repair damaged areas of dies or strengthen the surface of dies. By the adoption of a wide-band scanning system, different dies such as plastic die, hot work die, cold work die and the like can be repaired and undergo surface strengthening. The width of a single track laser-induced hybrid cladding layer reaches 20-30mm; the thickness of each track cladding can reaches 3mm; laser scan speed reaches 10m/min; the powder flow reaches 15kg/h; the powder utilization rate is 90%; the efficiency is raised by 5-10 times in comparison with simple laser cladding; repairing time is shortened by 30%; energy is saved by 10-40%; defects such as pores and crack in the coating are eliminated; wear resistance, corrosion resistance, antioxidation performance and fatigue resistance of dies are greatly raised; and the service life of dies can be increased by 3-10 times.
Description
Technical field
The present invention relates to the method for a kind of broad band laser induction composite cladding reparation and surface strengthening mould, belong to the laser repairing technical field of mold.
Background technology
As everyone knows, mould is the important equipment of the indispensability of industrial circles such as machinery, metallurgy, electronics, light industry and national defence.In China, owing to have defective in mould wearing and tearing, physical abuse and the castingprocesses in use, be easy to generate unacceptable product and mould and lost efficacy, the financial loss that causes every year reaches billions of Renminbi.Therefore, must repair and surface strengthening mould.
At present, the method for mould repair and surface strengthening has usually:
(1) electroplate: have advantages such as technical maturity, cost are lower, thinner but weak point is a coating, poor with the bonding force of mould, the position that face damage is bigger is difficult to repair and environment is had pollution.
(2) built-up welding: overlaying method commonly used has soldering, electric-arc welding, shielded welding, plasma arc welding etc., and during built-up welding, the heat input is big, causes the mold hot zone of influence big and yielding.
(3) thermospray: technology is simple, but coating is prone to the generation pore, and has shortcomings such as bonding strength is low between coating and the mould.
(4) conventional laser cladding: adopt the method for laser melting coating that mould is repaired and surface strengthening, can base material heat affecting and thermal distortion be reduced to minimum degree.But there is the problem that efficient is low, intensity is low, cladding layer is easy to crack in the conventional laser cladding method.
Therefore, the damaged parts of mould are repaired and mould is carried out surface strengthening, and then be problem demanding prompt solution in mould manufacturing and the use work-ing life of improving mould.
Summary of the invention
The objective of the invention is problem and shortage part, and a kind of method that adopts special-purpose Ni base alloy powder mould to be carried out reparation of broad band laser induction composite cladding and surface strengthening is provided for the method existence that solves plating, built-up welding, thermospray and conventional laser cladding reparation and surface strengthening mould.
Method and step that the present invention realizes are:
1, eliminate rust in the position that the damaged position or the mould of mould is needed surface strengthening, oil removing and acetone;
2, special-purpose Ni base alloy powder is packed in the loading hopper of automatic powder feeding device; Regulate that high-frequency induction heating coil and mould are repaired or the distance strengthened between the position is 2～10mm; Through the computer regulated induction heating power; The position that the damaged position or the mould of mould needed surface strengthening is heated to 200～950 ℃, utilizes copper pipe that the induction heating district is blown into Ar gas simultaneously;
3, will have the laser beam of rectangular light spot and the powder jet of automatic powder feeding device and be positioned in the induction heating district, realize the compound of laser thermal source and induction heating source; Utilize powder jet that the Ni base alloy powder is blown into laser induction composite and cover in the molten bath that thermal source forms, after laser induction composite covered thermal source and removes, fused powdered alloy cooled and solidified formed coating.
4, after laser induction composite has covered the first road coating, move the numerically controlled machine face along the vertical direction of laser scanning speed, its distance that moves is 80～90% of a broadband rectangular laser hot spot length.
5, second, third road coating is accomplished in repeating step (2)～(4), and the overlapping rate that continuous twice are coated with interlayer is 20%, reaches requirement up to coating.
6, coatingsurface is carried out milling and polishing, obtain desired surface smoothness.
A kind of broad band laser induction composite cladding described in the technical solution of the present invention is repaired the method with the surface strengthening mould; The Ni base special metals powder that is adopted has flowability; Added strong carbide forming element W and V, its chemical ingredients is: 0.2～0.5%C, 5～10%Cr, 2～3%Si, 1～3%B, 2～4%Fe, 0～3%W, 0～2%V, Ni surplus.
A kind of broad band laser induction composite cladding described in the technical solution of the present invention is repaired the method with the surface strengthening mould; In broad band laser induction composite cladding process; Angle between the surface normal at rectangle powder jet and mould mould position to be processed is 45 °, and the vertical range at rectangle powder jet and mould position to be processed is 8mm, and powder mass flow is 8～15kg/h; Laser power is 5kW; Induction heating power is 60kW, and laser scanning speed is 6～10m/min, and the thickness of coating is 2～3mm.
The invention has the beneficial effects as follows: the broadband scanning system is adopted in (1); The width of single track laser induction composite coating reaches 20～30mm; The maximum ga(u)ge of per pass cladding can reach 3mm, and the maximum laser sweep velocity reaches 10m/min, and powder mass flow reaches 15kg/h; Powder using efficiency 90%, the cladding efficient of simple laser melting and coating technique can improve about 5～10 times; (2) laser induction composite covers when repairing with the surface strengthening mould; Can accurately locate the zone of needs reparation and surface strengthening; Therefore to size, the shape of mould and the position that needs to handle unrestricted; Do not need mould is carried out integral body heating, can shorten repair time 30%, energy-conservation 10～40%; (3) adopting laser induction composite to cover special-purpose Ni base closes powder mould is repaired and surface strengthening; Can under laser high-speed scanning, reduce the thermograde in the cladding process; Metallurgical imperfections such as pore in the elimination coating and crackle; Wear-resistant, corrosion-resistant, the resistance to high temperature oxidation and the thermal fatigue resistance of mould can be increased substantially, about 3～10 times can be improved the work-ing life of mould; (4) adopt the method for broad band laser induction composite cladding to repair and surface strengthening to different moulds such as mould of plastics, hot-work die and cold-work dies.
Description of drawings
Fig. 1 is that laser induction composite of the present invention covers the device synoptic diagram of repairing with the surface strengthening mould.
Among the figure: 1, computingmachine; 2, laser apparatus; 3, light-conducting system; 4, laser head; 5, integral mirror; 6, rectangle powder jet; 7, loading hopper; 8, special-purpose Ni base alloy powder; 9, automatic powder feeding device; 10, load coil; 11, induction heating district; 12, induction heating power; 13, numerically controlled machine face; 14, plastic die steel; 15, coating; 16, special-purpose magnetizer; 17, molten bath; 18, copper pipe; 19, mould position to be processed.
Fig. 2 is the synoptic diagram of laser induction composite load coil and base material relative position when covering repairing mould.
Embodiment
Below in conjunction with accompanying drawing the present invention is further specified.
Like Fig. 1, shown in Figure 2, adopt the broad band laser induction composite cladding to repair and the surface strengthening mould, the practical implementation process is following:
1, with mould position to be processed (19) eliminate rust, oil removing and acetone.
2, special-purpose Ni base alloy powder (8) is packed in the loading hopper (7) of automatic powder feeding device (9); Mould position to be processed (19) and the distance that is equipped with between the load coil (10) of special-purpose magnetizer (16) are adjusted into 8mm; Load coil (10) is switched on; And utilize computingmachine (1) to regulate the power of induction heating power (12); Make mould position to be processed (19) be heated to 200～950 ℃, utilize copper pipe (18) to be blown into Ar gas as shielding gas simultaneously, prevent induction heating district (11) oxidation to induction heating district (11) by load coil (10).
3, the laser beam that sends of laser apparatus (2) is transferred to the integral mirror (5) that is positioned at laser head (4) through light-conducting system (3); Form rectangular light spot; Rectangle powder jet (6) with rectangular light spot and automatic powder feeding device (9) is positioned in the induction heating district (11) then, realizes the compound of laser thermal source and induction heating source; Utilizing rectangle powder jet (6) that special-purpose Ni powdered alloy (8) is blown into laser induction composite covers in the molten bath (17) that thermal source forms; Fusing takes place and spreads out on the surface at mould position to be processed (19) in special metals powder (8) in molten bath (17); After laser beam that laser apparatus (2) sends and load coil (10) are removed; The melting layer cooled and solidified forms and repairs or surface peening coating (15).
4, after intact first road reparation of broad band laser induction composite cladding or surface peening coating (15), move numerically controlled machine face (13) along the vertical direction of laser scanning speed, its distance that moves is 80% of a broadband rectangular laser hot spot length.
5, repeating step 2～4, accomplish second, third road coating, and the overlapping rate that continuous twice are coated with interlayer is 20%, reaches requirement up to reparation or surface peening coating (15);
6, milling and polishing are carried out in reparation or surface peening coating (15) surface, obtained desired surface smoothness.
Claims (3)
1. a broad band laser induction composite cladding is repaired the method with the surface strengthening mould fast, and the method for its realization and step are:
(1) eliminate rust in the position that the damaged position or the mould of mould is needed surface strengthening, oil removing and acetone;
(2) special-purpose Ni base alloy powder is packed in the loading hopper of automatic powder feeding device; Regulate that high-frequency induction heating coil and mould are repaired or the distance strengthened between the position is 2～10mm; Through the computer regulated induction heating power; The position that the damaged position or the mould of mould needed surface strengthening is heated to 200～950 ℃, utilizes copper pipe that the induction heating district is blown into Ar gas simultaneously;
(3) will have the laser beam of rectangular light spot and the powder jet of automatic powder feeding device and be positioned in the induction heating district, realize the compound of laser thermal source and induction heating source; Utilize powder jet that the Ni base alloy powder is blown into laser induction composite and cover in the molten bath that thermal source forms, after laser induction composite covered thermal source and removes, the crystallization of fused powdered alloy rapid solidification formed coating;
(4) after laser induction composite has covered the first road coating, move the numerically controlled machine face along the vertical direction of laser scanning speed, its distance that moves is 80～90% of a broadband rectangular laser hot spot length;
(5) second, third road coating is accomplished in repeating step (2)～(4), and the overlapping rate that continuous twice are coated with interlayer is 20%, reaches requirement up to coating;
(6) coatingsurface is carried out milling and polishing, obtain desired surface smoothness.
2. the method for quick repairing mould of broad band laser induction composite cladding according to claim 1 and surface strengthening; It is characterized in that used powdered alloy is special-purpose Ni base alloy powder, its chemical ingredients is (calculating by the quality percentage composition): 0.2-0.5%C, 5-10%Cr, 2-3%Si, 1-3%B, 2-4%Fe, 0-3%W, 0-2%V, Ni surplus.
3. the method for quick repairing mould of broad band laser induction composite cladding according to claim 1 and surface strengthening; It is characterized in that in broad band laser induction composite cladding process; Angle between the surface normal at rectangle powder jet and mould mould position to be processed is 45 °, and the vertical range at rectangle powder jet and mould position to be processed is 8mm, and powder mass flow is 8～15kg/h; Laser power is 5kW; Induction heating power is 60kW, and laser scanning speed is 6～10m/min, and the thickness of coating is 2～3mm.
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658429A (en) * | 2012-04-09 | 2012-09-12 | 北京拓博尔机器人科技有限公司 | Three-dimensional digital laser deposition system and laser repair method thereof based on robot |
| CN102873456A (en) * | 2012-08-28 | 2013-01-16 | 张家港市和昊激光科技有限公司 | Method for avoiding cracking during increase of laser cladding height by using combustion-supporting gas |
| CN103576602A (en) * | 2012-07-31 | 2014-02-12 | 昆山福冈电子有限公司 | Manufacturing process of special EMI vacuum splattering jig |
| CN103785958A (en) * | 2014-02-10 | 2014-05-14 | 常州大学 | Method for improving X80 pipeline steel welding connector property through laser heat treatment |
| CN103898503A (en) * | 2014-04-11 | 2014-07-02 | 江苏新亚特钢锻造有限公司 | Method for repairing shaft part by laser-induction composite cladding |
| CN104213000A (en) * | 2014-09-11 | 2014-12-17 | 王晓飚 | Laser-cladding-used nickel base alloy powder for producing high-temperature oxidation resistant coating layer |
| CN104250807A (en) * | 2013-06-28 | 2014-12-31 | 丹阳宏图激光科技有限公司 | Laser restoration method of tool steel |
| CN104668778A (en) * | 2015-01-27 | 2015-06-03 | 吉林大学 | Hot-working die surface multipoint combination type bionic machining device and strengthening repair method |
| CN105252203A (en) * | 2015-10-19 | 2016-01-20 | 浙江大学宁波理工学院 | Restoration method for mold fractures |
| CN105779997A (en) * | 2016-04-29 | 2016-07-20 | 广西大学 | Method for cladding nickel-based alloy coating on surface of vermicular graphite cast iron mould after laser pre-heating treatment |
| CN106521486A (en) * | 2016-10-27 | 2017-03-22 | 安徽江淮汽车集团股份有限公司 | Method for repairing automobile rolling mold |
| CN106733513A (en) * | 2017-01-24 | 2017-05-31 | 江苏肯创环境科技股份有限公司 | A kind of device for spraying powder paint and powdery paints constructing device |
| CN107723702A (en) * | 2017-10-11 | 2018-02-23 | 东北大学 | A kind of laser melting and coating process |
| CN108920883A (en) * | 2018-08-20 | 2018-11-30 | 南京航空航天大学 | One kind is based on fatigue, the interactive hot-forming die life forecast method of oxidation |
| CN109055826A (en) * | 2018-08-01 | 2018-12-21 | 芜湖彰鸿工程技术有限公司 | A kind of raising wearability roll laser cladding alloy material and application method |
| CN109967878A (en) * | 2017-12-27 | 2019-07-05 | 中国科学院宁波材料技术与工程研究所 | Laser crack forming mechanism system and laser method for repairing crack |
| WO2019144843A1 (en) * | 2018-01-23 | 2019-08-01 | 华中科技大学 | Method for laser-assisted heat source efficient hybrid cladding reinforcing steel rail |
| CN111889914A (en) * | 2020-08-11 | 2020-11-06 | 象山旭雯钢铁科技有限公司 | Intelligent steel pipe hole patching equipment |
| CN114919211A (en) * | 2022-05-18 | 2022-08-19 | 南京航空航天大学 | Induction repair equipment for thermoplastic composite material and repair method thereof |
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| CN101125394A (en) * | 2007-06-13 | 2008-02-20 | 华中科技大学 | Automatic powder feeding laser induction composite coating method and device |
| CN101748402A (en) * | 2009-12-10 | 2010-06-23 | 南昌航空大学 | Method of laser induction composite cladding gradient function thermal barrier coating |
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| US6221175B1 (en) * | 1997-11-06 | 2001-04-24 | Sulzer Innotec Ag | Method for the production of a ceramic layer on a metallic base material |
| CN101125394A (en) * | 2007-06-13 | 2008-02-20 | 华中科技大学 | Automatic powder feeding laser induction composite coating method and device |
| CN101748402A (en) * | 2009-12-10 | 2010-06-23 | 南昌航空大学 | Method of laser induction composite cladding gradient function thermal barrier coating |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658429A (en) * | 2012-04-09 | 2012-09-12 | 北京拓博尔机器人科技有限公司 | Three-dimensional digital laser deposition system and laser repair method thereof based on robot |
| CN103576602A (en) * | 2012-07-31 | 2014-02-12 | 昆山福冈电子有限公司 | Manufacturing process of special EMI vacuum splattering jig |
| CN102873456A (en) * | 2012-08-28 | 2013-01-16 | 张家港市和昊激光科技有限公司 | Method for avoiding cracking during increase of laser cladding height by using combustion-supporting gas |
| CN104250807A (en) * | 2013-06-28 | 2014-12-31 | 丹阳宏图激光科技有限公司 | Laser restoration method of tool steel |
| CN103785958A (en) * | 2014-02-10 | 2014-05-14 | 常州大学 | Method for improving X80 pipeline steel welding connector property through laser heat treatment |
| CN103898503A (en) * | 2014-04-11 | 2014-07-02 | 江苏新亚特钢锻造有限公司 | Method for repairing shaft part by laser-induction composite cladding |
| CN104213000A (en) * | 2014-09-11 | 2014-12-17 | 王晓飚 | Laser-cladding-used nickel base alloy powder for producing high-temperature oxidation resistant coating layer |
| CN104668778A (en) * | 2015-01-27 | 2015-06-03 | 吉林大学 | Hot-working die surface multipoint combination type bionic machining device and strengthening repair method |
| CN105252203A (en) * | 2015-10-19 | 2016-01-20 | 浙江大学宁波理工学院 | Restoration method for mold fractures |
| CN105779997A (en) * | 2016-04-29 | 2016-07-20 | 广西大学 | Method for cladding nickel-based alloy coating on surface of vermicular graphite cast iron mould after laser pre-heating treatment |
| CN106521486A (en) * | 2016-10-27 | 2017-03-22 | 安徽江淮汽车集团股份有限公司 | Method for repairing automobile rolling mold |
| CN106733513A (en) * | 2017-01-24 | 2017-05-31 | 江苏肯创环境科技股份有限公司 | A kind of device for spraying powder paint and powdery paints constructing device |
| CN107723702A (en) * | 2017-10-11 | 2018-02-23 | 东北大学 | A kind of laser melting and coating process |
| CN107723702B (en) * | 2017-10-11 | 2020-02-11 | 东北大学 | Laser cladding process |
| CN109967878A (en) * | 2017-12-27 | 2019-07-05 | 中国科学院宁波材料技术与工程研究所 | Laser crack forming mechanism system and laser method for repairing crack |
| WO2019144843A1 (en) * | 2018-01-23 | 2019-08-01 | 华中科技大学 | Method for laser-assisted heat source efficient hybrid cladding reinforcing steel rail |
| CN109055826A (en) * | 2018-08-01 | 2018-12-21 | 芜湖彰鸿工程技术有限公司 | A kind of raising wearability roll laser cladding alloy material and application method |
| CN109055826B (en) * | 2018-08-01 | 2019-12-10 | 永卓防务科技有限公司 | roller laser cladding alloy material for improving wear resistance and using method |
| CN108920883A (en) * | 2018-08-20 | 2018-11-30 | 南京航空航天大学 | One kind is based on fatigue, the interactive hot-forming die life forecast method of oxidation |
| CN108920883B (en) * | 2018-08-20 | 2020-08-07 | 南京航空航天大学 | Method for predicting service life of hot forming die based on fatigue and oxidation interaction |
| CN111889914A (en) * | 2020-08-11 | 2020-11-06 | 象山旭雯钢铁科技有限公司 | Intelligent steel pipe hole patching equipment |
| CN111889914B (en) * | 2020-08-11 | 2021-07-27 | 山东德浦泰管业科技有限公司 | Intelligent steel pipe hole patching equipment |
| CN114919211A (en) * | 2022-05-18 | 2022-08-19 | 南京航空航天大学 | Induction repair equipment for thermoplastic composite material and repair method thereof |
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Application publication date: 20120314 |