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Preparation method of ventilating metal

A technology of alloy and volume density, which is applied in the field of preparation of breathable metals, to achieve the effects of large pore size change range, large specific gravity change range, and excellent air permeability

Inactive Publication Date: 2015-03-25
吉林省正大新型材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no literature report on the method of using metal foam materials to produce gas-permeable metals through compression shrinkage, pressing, high temperature sintering, secondary compression and division

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Example 1: A method for preparing breathable copper, including the following steps:

[0048] (1) Material selection: use purity 99.9~99.999%, thickness 2.0mm, bulk density 0.5g / cm 3 , Cell density: 60~150ppi foam copper, the quality requirement of foam copper is that the surface is free of oxidation, no defects, and the through-hole rate is 97-99%, cut to the required size with a shearing machine, width 10mm~350mm, length 10mm~ 650mm;

[0049] (2) Compression shrinkage cavity and pressing: The cut foam copper is neatly superimposed to design the high degree, and the foam copper is pushed into the working surface of the hydraulic press with a 10mm stainless steel pallet. The nominal force of the hydraulic press: 6000KN, the maximum liquid working pressure is 25MPa, The maximum opening of the hydraulic press is 1500mm, the size of the worktable: 1400×1400mm; the pressure is gently applied, the maximum nominal force is 2.5KN / cm 2 , The compression amount is 78-82% of the design...

Embodiment 2

[0053] Embodiment 2: A method for preparing a breathable copper alloy, including the following steps:

[0054] (1) Material selection: choose the content of copper 80wt%, zinc 20wt%, thickness 2.0mm, bulk density 0.5g / cm 3 , Pore density: 60-150ppi foamed copper alloy, no oxidation on the surface, no defects, 97-99% through-hole rate, cut to the required size with a shearing machine, width 10mm-350mm, length 10mm-650mm;

[0055] (2) Compression shrinkage cavity and pressing: The cut foam copper alloy is neatly superimposed to design the high degree, and the foam copper alloy is pushed into the working surface of the hydraulic press with a 10mm stainless steel pallet. The nominal force of the hydraulic press: 6000KN, the maximum liquid working pressure 25MPa, hydraulic press maximum opening 1500mm, worktable size: 1400×1400mm; gentle pressure, maximum nominal force 2.5KN / cm 2 , The compression amount is 78-82% of the design stack height, and 5-10% compression amount is reserved;

[00...

Embodiment 3

[0059] Embodiment 3: A method for preparing breathable nickel, including the following steps:

[0060] (1) Material selection: use purity 99.9~99.999%, thickness 2.0mm, bulk density 0.5g / cm 3 , Cell density: 60~150ppi foam nickel, the quality requirement for foam nickel is that there is no oxidation on the surface, no defects, and the through-hole rate is 97-99%, cut to the required size with a shearing machine, width 10mm~350mm, length 10mm ~650mm;

[0061] (2) Compression shrinkage and pressing: The cut foam nickel is neatly superimposed to design the high degree, and the foam nickel is pushed into the working surface of the hydraulic press with a 10mm stainless steel support plate. The nominal force of the hydraulic press: 6000KN, the maximum liquid working pressure is 25MPa, The maximum opening of the hydraulic press is 1500mm, the size of the worktable: 1400×1400mm; the pressure is gently applied, the maximum nominal force is 2.5KN / cm 2 , The compression amount is 78-82% of th...

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Abstract

The invention relates to a preparation method of ventilating metal. The preparation method is characterized by comprising the following steps: selecting materials; compressing a shrinkage cavity and compressing; sintering at high temperature; compressing for the second time; cutting to prepare a finished product and the like. By taking foamed metal as a raw material, the finished product is prepared by the following steps: compressing a shrinkage cavity and compressing; sintering at high temperature; compressing for the second time; cutting and the like. The preparation method of the ventilating metal has the advantages that scientific and reasonable production flow is adopted, the method is suitable for producing various ventilating metals, simplicityand feasibility are realized, the quality can be controlled easily and pollution in the production process can be avoided, and the ventilating metal which is directly obtained by the method has the advantages of being high in cost performance, good in mechanical property, uniform in pore distribution and wide in application and having diversified products and the like. The open-cell rate of the prepared metal reaches 97-99%.

Description

Technical field [0001] The invention relates to the technical field of breathable metals, and is a method for preparing breathable metals. Background technique [0002] The mold industry occupies an important position in the national economy, and the level of its production technology has become an important indicator of the level of a country's product manufacturing. The revitalization and development of my country's mold industry has attracted increasing attention and attention. In products such as electronics, automobiles, motors, electrical appliances, instruments, meters, home appliances, and communications, 60%-80% of parts and components must be formed by molds. [0003] For a long time, Chinese mold makers and users have been restricted by equipment, technology and materials, especially high-precision molds. How to solve the problems of air trapping, scorching, patterns, flow marks, burrs, uneven wall thickness, product deformation, and thin-walled products in injection m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/08B22F3/11
Inventor 辛长礼
Owner 吉林省正大新型材料科技有限公司
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