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Powder pressing method and apparatus based on laser shock wave technology

A shock wave and powder technology, applied in laser welding equipment, manufacturing tools, welding equipment, etc., can solve the problems of difficult control of explosion parameters, poor explosion suppression safety, and rupture of the blank core, and achieve the effect of avoiding the rupture of the blank core.

Inactive Publication Date: 2006-05-17
JIANGSU UNIV
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  • Claims
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Problems solved by technology

This method can obtain high-density pressed billets, but the safety of explosive pressing is poor, and the explosion parameters are not easy to control, and the core of the billet is prone to cracking

Method used

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  • Powder pressing method and apparatus based on laser shock wave technology
  • Powder pressing method and apparatus based on laser shock wave technology

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Embodiment Construction

[0022] The details and working conditions of the specific device proposed by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] The device for powder compaction by this method comprises a laser generator control device 1, a laser generator 2, a workbench 9 and a powder mold system. Among them, the powder mold system is divided into an indirect compression molding powder mold system and a direct compression molding powder mold system. The indirect compression molding powder mold system is composed of constraining layer 4 , absorbing layer material 5 , piston 6 , mold 7 and powder 8 . The direct compression forming powder mold system is composed of an absorbent layer material 12 mixed with explosives, a metal thin-walled shell 13 , a base 14 and powder 8 .

[0024] The laser generator generates laser pulses with an energy of 10-100 joules and a duration of 8-80 nanoseconds. The spot mode of the laser beam 3 can be a f...

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Abstract

The present invention relates to powder metallurgy technology, and is especially powder pressing method and apparatus based on laser shock wave technology. The present invention is especially suitable for pressing small size irregular samples. The apparatus of the present invention consists of laser, laser beam guiding system, laser controller, restricting layer and absorption layer material, powder metallurgical mold system and work table. Owing to the precise control of the laser parameters and the capacity of repeated loading, the present invention can meet the requirement of pressing samples of different density.

Description

technical field [0001] The invention relates to the field of powder metallurgy, in particular to a powder pressing method and device based on laser shock wave technology, and is especially suitable for pressing and forming small irregular test pieces. Background technique [0002] The traditional powder compaction method in powder metallurgy is mechanical compaction, that is, the powder is filled in the mold, and then the pressure is applied to the piston by a pressure machine, and the powder in the mold is pressed into shape by the extrusion of the piston. This method not only requires special pressure equipment, but also the porosity of the pressed test piece is large, and it is difficult to press and form some irregularly shaped test pieces. [0003] The technology closest to the present invention is the explosive powder compaction technology. Explosion suppression is to use the shock wave generated by the explosion of explosives to press the powder into shape. This met...

Claims

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Application Information

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IPC IPC(8): B22F3/087
CPCB23K26/356
Inventor 张永康顾永玉鲁金忠
Owner JIANGSU UNIV
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