Metal laser deep-layer quenching process

A laser and metal technology, applied in the field of metal laser deep quenching process, can solve the problems of shallow depth of laser quenching and hardening, etc.

Inactive Publication Date: 2005-04-06
ZHEJIANG UNIV OF TECH
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a laser deep metal quenching and hardening processing method. The invention solves the deformation of the metal during induction heating, improves the metal surface hardness, and at the same time solves the problem of shallow laser quenching and hardening depth.

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Embodiment Construction

[0013] Combine below figure 1 , figure 2 and image 3 A detailed description of the embodiment of the present invention, the laser spot can be a rectangular laser spot, or a circular spot such as figure 1 , 1 is the laser beam, the size of the spot can be adjusted, the flow and direction of the coolant 2 are fixed, the injection direction of the coolant 2 is 5-15° to the outside, and the distance from the spot can be adjusted, during the process of the coolant 2, The gas 3 and the laser beam 1 move synchronously. The gas 3 is argon, which not only has a cooling effect, but also has a protective effect on the laser active area. Take woodworking knives as an example, such as figure 2 , image 3 As shown, the knife is made up of a knife body 5 and a blade 4. Originally, the blade 4 was manufactured by brazing and inserting high-speed steel or hard alloy. The main problem is that the process is complicated. For the hard alloy edge, due to the brittleness of the material its...

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Abstract

One kind of metal laser deep layer quenching craft, through must process the area surface spreading alloy extinction coating after the metal, according to processes the area choice certain facula the light beam to carry on laser processing, simultaneously, blows the metal surface laser partial with the certain current capacity gas sphere of action, and with the liquid cooling laser sphere of action periphery, causes the metal hardening level quenching depth to achieve 0.7~~3mm. The invention has solved the metal induction heating time deformation, enhanced the metal skin hardness, simultaneously has solved an ordinary laser quenching hardening depth shallower problem.

Description

technical field [0001] A metal laser deep quenching process, suitable for surface quenching and hardening of metal materials, especially for parts with complex shapes and parts that do not allow deformation, such as the surface layer of large and medium-sized gears, the inner and outer rings of large bearings, and the processing of tool blades, etc. . Background technique [0002] The current metal processing usually adopts the method of induction heating and quenching to improve the surface hardness of the metal. Although the depth is relatively deep, it can reach 1-3mm, but the surface will melt during heating, which not only destroys the metal surface finish, but also deforms the workpiece greatly. The production of the induction coil is complicated, especially the part of the inner cavity of the workpiece with complex shapes, which is difficult to harden. [0003] Laser hardening metal processing technology is also widely used at home and abroa...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/09
Inventor 姚建华楼程华
Owner ZHEJIANG UNIV OF TECH
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