CN1164795C - Laser alloying treatment method for surface of extruding aluminium alloy mold - Google Patents
Laser alloying treatment method for surface of extruding aluminium alloy mold Download PDFInfo
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- CN1164795C CN1164795C CNB011148543A CN01114854A CN1164795C CN 1164795 C CN1164795 C CN 1164795C CN B011148543 A CNB011148543 A CN B011148543A CN 01114854 A CN01114854 A CN 01114854A CN 1164795 C CN1164795 C CN 1164795C
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Abstract
The present invention relates to a laser alloying treatment method for the surface of an extruding aluminium alloy mold. The surface of a cutting edge of a mold adopts the laser alloying treatment method, so the present invention can make the surface of a workpiece obtain a thermal fragment resistant hardening structure, the hardness is enhanced to 60 to 65 HRC from 48 to 51 HRC which is the harness before the workpiece is processed, and the hardness of the workpiece is greatly enhanced; the workpiece has the advantage of favorable wear resisting properties; the service life of the workpiece is prolonged by 50%, and therefore, the production cost of enterprises is greatly reduced. The present invention is a laser alloying treatment method for the surface of an extruding aluminium alloy mold with the advantages of reasonable technique, convenient and flexible use, and obvious social benefit and economic benefit.
Description
The present invention is the treatment process of the surface of extruding aluminium alloy mold being carried out laser alloying.The innovative technology that belongs to material surface treatment method.
The used material of extruding aluminium alloy mold adopts H13 (4Cr5MoSiVI) die steel mostly at present, and it is HRc48～51 that the application vacuum heat treatment makes its matrix hardness.If matrix hardness is too high, mould poor toughness, cracking easily., this hardness is but not high concerning die point, so mould is usually scrapped because of cutting edge damages, its work-ing life is shorter.In order to improve the work-ing life of mould, the surface hardness of die point should be brought up to HRc60～65, and case depth should be about 0.8mm.But with inaccessible this requirement of conventional heat treating method.
The purpose of wood invention is to consider the problems referred to above and a kind of surface hardness that can improve the extruding aluminium alloy mold cutting edge effectively is provided, and simple to operate, the laser alloying treatment method for surface of extruding aluminium alloy mold flexibly.
Laser alloying treatment method of the present invention is with laser beam base metal surface to be melted, and one or more alloying elements is fused into matrix surface fast carry out Laser Alloying Treatment, and it carries out as follows:
(1) Ni60 and WC blended alloy powder evenly being put into extinction coating stirs;
(2) pending die point plane is cleaned out;
(3) the extinction coating that will mix alloy powder spreads upon on the die point plane uniformly;
(4) laser beam rapid scanning finished surface makes it be heated to fusing, and laser beam edge and die point limit portion should reserve distance;
(5) laser beam leaves the workpiece surface to be machined, and workpiece carries out self coolingly because of thermal conduction itself, and its crucible zone is solidified;
(6) carry out surface-conditioning, inspection, at last correct grinding.
Describe particular case of the present invention in detail below in conjunction with embodiment:
Fig. 1 is the front view of wooden inventive embodiments laser alloying workpiece;
Fig. 2 is the vertical view of Fig. 1 and the scanning sequency figure of laser.
Embodiment:
Laser alloying treatment method of the present invention is with laser beam base metal surface to be melted, and one or more alloying elements is fused into matrix surface fast carry out Laser Alloying Treatment, and it carries out as follows:
(1) Ni60 and WC blended alloy powder evenly being put into extinction coating stirs;
(2) pending die point plane is cleaned out;
(3) the extinction coating that will mix alloy powder spreads upon on the die point plane uniformly;
(4) laser beam rapid scanning finished surface makes it be heated to fusing, and laser beam edge and die point limit portion should reserve distance;
(5) laser beam leaves the workpiece surface to be machined, and workpiece carries out self coolingly because of thermal conduction itself, and its crucible zone is solidified;
(6) carry out surface-conditioning, inspection, at last correct grinding.
The distance L that laser beam edge and die point limit portion should reserve in the above-mentioned steps (4) is 0.3～0.5mm.In case burning the die point acute angle, laser beam puts down.
Above-mentioned Ni60 and WC blended alloy powder, its blending ratio is Ni60: WC=1: 1.
The output rating P of above-mentioned laser beam is 1.2～1.4KW.In the present embodiment, the output rating P of laser beam is 1.3KW.
Above-mentioned laser beam spot size D is Ф 2.5～3.0mm.In the present embodiment, laser beam spot size D is Ф 2.8mm.
The scan velocity V of above-mentioned laser beam is 6～7mm/S.Amount of lap between laser beam spot is 0.4～0.6mm.In the present embodiment, the scan velocity V of laser beam is 6～7mm/S.Amount of lap between laser beam spot is 0.5mm.
The present invention is owing to adopt the treatment process of laser alloying to the edge surface of mould, therefore can make workpiece surface obtain the sclerotic tissue that heat resistanceheat resistant is split, hardness is brought up to HRc60～65 by HRc48～51 before handling, workpiece hardness improves greatly, wear resistance is good, improve 50% work-ing life, thereby the production cost of enterprise is reduced greatly.The present invention is that a kind of technology is reasonable, and is easy to use, flexible, and social benefit and economic benefit be the laser alloying treatment method for surface of more significant a kind of extruding aluminium alloy mold all.
Claims (7)
1, the laser alloying treatment method for surface of extruding aluminium alloy mold is characterized in that with laser beam Laser Alloying Treatment being carried out on the surface of workpiece, and it carries out as follows:
(1) Ni60 and WC blended alloy powder evenly being put into extinction coating stirs;
(2) pending die point plane is cleaned out;
(3) the extinction coating that will mix alloy powder spreads upon on the die point plane uniformly;
(4) laser beam flying finished surface makes it be heated to fusing, and laser beam edge and die point limit portion should reserve distance;
(5) laser beam leaves the workpiece surface to be machined, and workpiece carries out self coolingly because of thermal conduction itself, and its crucible zone is solidified;
(6) carry out surface-conditioning, inspection, at last correct grinding.
2, the laser alloying treatment method for surface of extruding aluminium alloy mold according to claim 1 is characterized in that the distance L that middle laser beam edge of above-mentioned steps (4) and die point limit portion should reserve is 0.3～0.5mm.
3, the laser alloying treatment method for surface of extruding aluminium alloy mold according to claim 1 is characterized in that the blending ratio of above-mentioned Ni60 and WC blended alloy powder is Ni60: WC=1: 1.
4, the laser alloying treatment method for surface of extruding aluminium alloy mold according to claim 1, the output rating P that it is characterized in that above-mentioned laser beam is 1.2～1.4KW.
5, the laser alloying treatment method for surface of extruding aluminium alloy mold according to claim 1 is characterized in that above-mentioned laser beam spot size D is Φ 2.5～3.0mm.
6, the laser alloying treatment method for surface of extruding aluminium alloy mold according to claim 1, the scan velocity V that it is characterized in that above-mentioned laser beam is 6～7mm/S.
7,, it is characterized in that the amount of lap between above-mentioned laser beam spot is 0.4～0.6mm according to the laser alloying treatment method for surface of claim 1 or 2 or 3 or 4 described extruding aluminium alloy molds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011148543A CN1164795C (en) | 2001-06-26 | 2001-06-26 | Laser alloying treatment method for surface of extruding aluminium alloy mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011148543A CN1164795C (en) | 2001-06-26 | 2001-06-26 | Laser alloying treatment method for surface of extruding aluminium alloy mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1332271A CN1332271A (en) | 2002-01-23 |
| CN1164795C true CN1164795C (en) | 2004-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB011148543A Expired - Fee Related CN1164795C (en) | 2001-06-26 | 2001-06-26 | Laser alloying treatment method for surface of extruding aluminium alloy mold |
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| CN (1) | CN1164795C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100374397C (en) * | 2005-12-05 | 2008-03-12 | 上海工程技术大学 | Nano repairing process for pore of ceramic coating by laser melting covering |
| CN104962905A (en) * | 2015-06-17 | 2015-10-07 | 北京瑞观光电科技有限公司 | High-speed rail wheel die laser alloying method |
| CN106702093A (en) * | 2015-07-15 | 2017-05-24 | 昆山鑫昌泰模具科技有限公司 | Laser reinforcing treatment method for cavity opening of plastic extruding mould |
| CN106350755B (en) * | 2016-11-28 | 2018-07-10 | 沈阳工业大学 | A kind of laser heat treatment strengthening process of aluminium alloy |
| CN110358908A (en) * | 2019-07-31 | 2019-10-22 | 重庆杰腆科技有限公司 | A kind of extrusion die working portion laser processing method |
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2001
- 2001-06-26 CN CNB011148543A patent/CN1164795C/en not_active Expired - Fee Related
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| CN1332271A (en) | 2002-01-23 |
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