Metal powder and method for processing high-performance metal parts by using metal powder

A metal powder, high-performance technology, applied in the field of powder metallurgy, can solve the problems of powder metallurgy products such as strength, poor toughness, waste of raw materials, and inability to make large-scale products

Active Publication Date: 2020-10-27
重庆科利得精密机械工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of the powder metallurgy process is that the strength and toughness of powder metallurgy products are poor
Due to the compact formed by powder pressing, the internal pores cannot be completely eliminated. Therefore, the strength and toughness of powder metallurgy products are inferior to those of castings and forgings with corresponding components, so powder metall

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A metal powder formula, which is composed of the following raw materials in weight percentage: 3.1% electrolytic copper powder, 0.08% nickel powder, 0.05% molybdenum powder, 0.05% cobalt powder, 0.3% ferrophosphorus powder, 1.2% iron-chromium alloy powder, sulfide Manganese powder 0.5%, graphite powder 0.3%, wax powder 0.2%, atomized pure iron powder 94.22%.

Embodiment 2

[0025] A metal powder formula, which is composed of the following raw materials in weight percentage: 3.2% electrolytic copper powder, 0.1% nickel powder, 0.1% molybdenum powder, 0.08% cobalt powder, 0.4% ferrophosphorus powder, 1.3% iron-chromium alloy powder, sulfide Manganese powder 0.6%, graphite powder 0.5%, wax powder 0.25%, atomized pure iron powder 93.47%.

Embodiment 3

[0027] A metal powder formula, which is composed of the following raw materials in weight percentage: 3.4% electrolytic copper powder, 0.19% nickel powder, 0.15% molybdenum powder, 0.15% cobalt powder, 0.5% ferrophosphorus powder, 1.4% iron-chromium alloy powder, sulfide Manganese powder 0.8%, graphite powder 0.6%, wax powder 0.3%, atomized pure iron powder 92.51%.

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PUM

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Abstract

The invention discloses metal powder and a method for processing high-performance metal parts by using the metal powder. The metal powder comprises the following raw materials in percentage by weight:3.1-3.4% of electrolytic copper powder, 0.08-0.19% of nickel powder, 0.05-0.15% of molybdenum powder, 0.05-0.15% of cobalt powder, 0.3-0.5% of ferrophosphorus powder, 1.2-1.4% of ferrochrome powder,0.5-0.8% of manganese sulfide powder, 0.3-0.6% of graphite powder, 0.2-0.3% of wax powder, and the balance atomized pure iron powder. The formula of the metal powder is obtained through repeated testsand inspection according to the densification change and the phase change mechanism of a pressed blank in each sintering stage. In addition, the high-performance metal parts meeting the requirementscan be produced through the powder metallurgy method.

Description

technical field [0001] The invention relates to the technical field of powder metallurgy, in particular to a method for processing high-performance metal parts by using metal powder. Background technique [0002] Powder metallurgy mainly uses metal powder as raw material, and through certain processing technology, it can be turned into the metal parts we need. The advantage of the powder metallurgy process is that it can process special materials, which can produce refractory metals, compounds, pseudoalloys, and porous materials. In addition, the powder metallurgy process saves metal and reduces costs. Because powder metallurgy can be pressed into final size compacts, no machining is required. [0003] The disadvantage of the powder metallurgy process is that the strength and toughness of powder metallurgy products are poor. Since the internal pores of the compact formed by powder compaction cannot be completely eliminated, the strength and toughness of powder metallurgy p...

Claims

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Application Information

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IPC IPC(8): C22C33/02B22F1/00B22F3/02B22F3/10C22C38/42C22C38/44C22C38/52
CPCB22F1/0003C22C33/006C22C33/0207C22C33/0264C22C38/42C22C38/44C22C38/52B22F3/02B22F3/1017B22F3/1007B22F2998/10
Inventor 周文修
Owner 重庆科利得精密机械工业有限公司
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