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Copper-coated iron powder and preparation method thereof

A copper-clad iron and iron powder technology, applied in transportation and packaging, metal processing equipment, coating, etc., can solve environmental pollution and other problems, and achieve the effects of excellent performance indicators, good fluidity, and reasonable particle size distribution

Active Publication Date: 2019-10-25
四川容克斯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, one of the objectives of the present invention is to provide a copper-coated iron powder and a preparation method thereof, so as to solve the environmental pollution problem of the prior art and improve the product quality of the copper-coated iron composite powder

Method used

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  • Copper-coated iron powder and preparation method thereof
  • Copper-coated iron powder and preparation method thereof
  • Copper-coated iron powder and preparation method thereof

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preparation example Construction

[0028] One aspect of the present invention provides a method for preparing copper-clad iron powder.

[0029] figure 1 It shows the comparison schematic diagram of the copper-clad iron powder preparation method of the present invention and the existing reduction method, wherein, (a) diagram shows the schematic diagram of the copper-clad iron powder prepared by the common reduction method, and the product prepared by this method has copper powder Can not fully coat the problem of iron particles; (b) figure shows the schematic diagram of the reduction method of the present invention to prepare copper-clad iron powder, the metal copper of the present invention can be completely coated on the iron powder particle surface, and is made of metal copper The coating layer is uniform and dense.

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Abstract

The invention provides a copper-coated iron powder and a preparation method thereof. The preparation method comprises the following steps of fully mixing copper oxide powder and iron powder to obtainmixed material powder; in protective atmosphere composed of reducing gases, rising the temperature of the mixed material powder to T1 and keeping heat preservation, then rising the temperature of themixed material powder to T2 and keeping heat preservation, going on to rise the temperature of the mixed material powder to T3 and keeping heat preservation, cooling the mixed material powder to 40 DEG C or below, and obtaining a cooled product, wherein the T1 is larger than or equal to 250 DEG C and smaller than 600 DEG C, the T2 is larger than or equal to 600 DEG C and smaller than 690 DEG C, and the T3 is larger than or equal to 690 DEG C and smaller than 820 DEG C. The cooled product is crushed and screened to obtain copper-coated iron powder. The copper-coated iron powder includes the product prepared with the preparation method. The copper-coated iron powder and the preparation method thereof have the beneficial effects that the preparation method is easy and convenient to carry out,and is free of pollution in the preparation process, various performance indexes of the copper-coated iron powder are excellent, the size distribution is reasonable and easy to control, the mobilityof a powder body is good, the powder is high in oxidation resistance, and a sintered product is small in shrinkage coefficient.

Description

technical field [0001] The invention relates to the field of preparation of composite metal powder, in particular to a composite powder of metal copper-coated iron and a preparation method thereof. Background technique [0002] Metal powder is the main raw material for manufacturing powder metallurgy mechanical parts and oil-impregnated bearings. The existing technology has developed from single value pure metal powder to coated powder and alloy powder. Copper alloy powder is generally used as raw material in the manufacture of small and micro oil bearings at home and abroad. Due to the improvement of oil bearing performance requirements and the need to reduce production costs, oil bearing manufacturers have widely used metal copper-coated iron composite powder as the main raw material. Substitute copper alloy powder to produce oil-impregnated bearings. [0003] The CN1241250A patent of Japan Paulad Corporation discloses a method for preparing composite metal powder for sin...

Claims

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Application Information

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IPC IPC(8): B22F9/22B22F1/02
CPCB22F9/22B22F1/17
Inventor 何安西杨倩
Owner 四川容克斯科技有限公司
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