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Iron bronze composite powder and preparation method thereof

A technology of iron bronze and composite powder, applied in metal material coating process, coating and other directions, can solve the problems of poor internal metal bonding strength, uneven distribution, low compressive strength, etc., to achieve excellent product quality and performance, reduce impurities The effect of content and excellent performance

Active Publication Date: 2007-02-28
CHONGQING YOUYAN ZHONGYE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oil-impregnated bearing produced by this raw material formula and process has good compressive strength and certain wear resistance and corrosion resistance, and can be used in some working conditions and occasions with low requirements, but still cannot meet certain requirements At the same time, it has high load, high speed, good wear resistance and good corrosion resistance.
This is mainly because the simple physical mixing of several metal powders cannot achieve sufficient uniformity, the uneven distribution of several metal elements in products and parts, the poor degree of alloying, and the poor internal metal bonding strength, resulting in products and parts Uneven quality, low compressive strength, poor wear resistance and corrosion resistance, which greatly limit the scope of use of copper-based oil-impregnated bearings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: A kind of iron bronze composite powder, its component content is shown in Table 1. The preparation method is as follows: firstly, dissolving stannous sulfate and copper sulfate in deionized water at normal temperature, then mixing them, adjusting the pH value of the above mixed solution to 0.5 with sulfuric acid, and then adding excess reduced iron powder under stirring Carry out chemical replacement reaction; Wherein, the add-on of above-mentioned stannous sulfate, copper sulfate and excessive reduced iron powder is stannous sulfate: copper sulfate: reduced iron powder=1.8: 35.4: 100 by weight. After stirring for 1 minute, stop stirring, allow the reaction product to settle for 1 minute, remove the clear liquid, wash the obtained solid reaction product repeatedly with deionized water until the pH value of the washing water is 7, dehydrate and vacuum-dry, the drying temperature is 80°C, the drying time is 60 minutes, and finally the dried solid reaction pr...

Embodiment 2

[0023] Embodiment 2: A kind of iron bronze composite powder, its component content is shown in Table 1. The preparation method is as follows: firstly, copper sulfate and stannous sulfate are respectively dissolved in deionized water at room temperature, and then mixed, and the pH value of the above mixed solution is adjusted to 1.5 with sulfuric acid, and then excessive reduced iron powder is added under stirring Carry out chemical displacement reaction; Wherein, the add-on of above-mentioned protosulfate, copper sulfate and excessive reduced iron powder is stannous sulfate: copper sulfate: reduced iron powder=3.7:70.7:100 by weight. After 2.4 minutes of stirring reaction, stop stirring, allow the reaction product to settle for 5 minutes, remove the clear liquid, and repeatedly wash the obtained solid reaction product with deionized water until the pH value of the washing water is 7, dehydrate and vacuum dry, and the drying temperature is 95°C, the drying time is 60 minutes, a...

Embodiment 3

[0024]Embodiment 3: A kind of iron bronze composite powder, its component content is shown in Table 1. The preparation method is as follows: firstly, copper sulfate and stannous sulfate are respectively dissolved in deionized water at normal temperature, and then mixed, and the pH value of the above mixed solution is adjusted to 2.0 with sulfuric acid, and then excessive reduced iron powder is added under stirring Carry out chemical displacement reaction; Wherein, the add-on of above-mentioned tin protosulfate, copper sulfate and excessive reduced iron powder is stannous sulfate: copper sulfate: reduced iron powder=3.7:74.6:100 by weight. After 3.8 minutes of stirring reaction, the stirring was stopped, and the reaction product was allowed to settle for 5.6 minutes. After the clear liquid was removed, the solid reaction product was repeatedly washed with deionized water until the pH value of the washing water was 7, dehydrated and vacuum-dried, and the drying temperature was 8...

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Abstract

The invention relates the iron bronze composite powder and preparing method. The invention adopts chemical replacement method to form metal powder with bronze coating layer on the iron powder; the tin content is 1-11%, the copper content is 9-49%, and the left is iron, The method has the advantages of saving the cost, and the product has good property and long life. The bruising strength of the product is 28kgf / mm2. The product has not leaded, so the method is not bad for environment and human.

Description

technical field [0001] The invention relates to a metal powder and a preparation method thereof, in particular to an iron-bronze composite powder and a preparation method thereof. Background technique [0002] Powder metallurgy is the process of producing special materials and their products by using metal powder or non-metal powder or their composite powder. It is widely used in various fields of national economy and has broad development prospects. Powder metallurgy products and parts are mainly divided into two categories: iron-based and copper-based. Copper-based powder metallurgy products and parts are products and parts with metal copper or bronze as the main component, which are used in industrial manufacturing fields with special requirements, but due to the high price of raw materials, the application of copper-based powder metallurgy products and parts is limited. In terms of application and development, there is an urgent need to find alternatives with relatively...

Claims

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Application Information

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IPC IPC(8): C22C1/04C23C30/00C22C38/16C22C30/00B22F9/18
Inventor 王绪其孟庆芳黄清福黄一峰曾明军
Owner CHONGQING YOUYAN ZHONGYE NEW MATERIAL
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