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A kind of preparation method of soft and hard metal component

A metal component, soft and hard technology, applied in the field of metal component preparation, can solve the problems of complex processing technology, affecting the strength of metal components, low interlayer bonding force, etc.

Active Publication Date: 2021-07-06
NANJING COMM INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defects that the interlayer bonding force of layered composite metal components in the prior art is not high, which affects the strength of the metal components and the processing technology is complicated.

Method used

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  • A kind of preparation method of soft and hard metal component
  • A kind of preparation method of soft and hard metal component
  • A kind of preparation method of soft and hard metal component

Examples

Experimental program
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Embodiment 1

[0044]This embodiment provides a method for preparing a soft and hard metal component. The plastic metal material includes pure metal or alloy material, the pure metal is copper or aluminum, etc.; the alloy is magnesium alloy or aluminum alloy, etc. Specifically, the plastic metal material is Magnesium alloy, the main body is in the form of a plate, and the preparation steps of the soft and hard metal components are as follows:

[0045] S10: Two recessed areas are processed on one surface of the plate-shaped body by wire cutting process, the side opposite to the recessed area is a step surface 11, and a protruding area is formed on both sides of each recessed area, and the longitudinal section shape of the protruding area is It is trapezoidal, the short side of the trapezoid corresponds to the outer end face 12 of the protruding area, the long side of the trapezoid is adjacent to and flush with the step surface 11, the structure of the protruding area of ​​the trapezoid is stab...

Embodiment 2

[0059] This embodiment provides a method for preparing a soft and hard metal component. The difference from Example 1 is that the plastic metal material is copper. Since copper has good plasticity, the component matrix 1 is not preheated before compression, and only Once compressed until the outer end surface of the protruding area is flush with the stepped surface 11 .

Embodiment 3

[0061] This embodiment provides a method for preparing a soft and hard metal member. The difference from Embodiment 1 is that a stepped surface 11 is processed on one surface of the body, and a protruding area is formed on one side of the stepped surface 11. The protruding area and a step surface 11 form a period; the first area is enclosed between the step surface 11 and the side wall of the protruding area on one side; the convex shape of the pressing plate 3 matches the shape structure of the first area, The pressing plate 3 protrudes into the first area, and then the pressing machine applies pressure to the pressing plate 3 to compress the protruding area.

[0062] As a first alternative implementation of Example 3, the number of processed step surfaces 11 can also be two, three, four, etc., that is, the interval distribution period between the protruding area and the step surface 11 can be two Three, four, etc., the number of periods is not limited; as a further deformati...

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Abstract

The invention provides a method for preparing a soft and hard metal component. Firstly, at least one step surface is processed on at least one surface of the body, and a protruding area is formed on at least one side of the step surface to form a component matrix; The outer end surface of the protruding area exerts pressure toward the step surface, compressing the outer end surface of the protruding area to be flush with the step surface. After the metal component is prepared, the body of the step surface and its corresponding region below maintains the original coarse-grained state and has high plasticity, and the body of the outer end surface and its corresponding region below has fine grains and high strength, thus forming a soft surface on the same body. Alternating soft and hard regions, the crack growth rate of metal components in the soft region is slow and the path is tortuous, and the crack growth rate of metal components in the hard region is fast and the path is straight. The alternating periodic distribution of soft regions and hard regions can effectively prevent crack growth. High-strength, high-plasticity metal components are obtained in the same body.

Description

technical field [0001] The invention relates to the technical field of metal composite material processing, in particular to a method for preparing a soft and hard metal component. Background technique [0002] Metal materials are mainly used for load-bearing components, therefore, metal materials should obtain as high strength as possible to meet engineering requirements. Applying plastic deformation to metal materials is a common engineering method to improve their strength. [0003] The plastic deformation process of metal mainly includes conventional methods such as extrusion, rolling, forging and drawing. These processes can not only eliminate casting defects, but also refine the grain structure, greatly improve the strength of metal materials, and expand the field of application. However, the plastic deformation process improves the strength by sacrificing plasticity, that is, the increase in material strength is bound to be accompanied by the decrease in plasticity,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 武艳军朱荣钱晓琳范英铭杨婧文
Owner NANJING COMM INST OF TECH