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Superfine iron-copper alloy powder and preparation method thereof

A technology of iron-copper alloy and copper alloy, which is applied in the field of powder metallurgy products and its preparation, can solve the problems of difficulty in reducing the copper content below 20%, uneven alloying degree, low alloying degree, etc., and achieve superior performance and process The route is reasonable and original, and the effect of high degree of alloying

Active Publication Date: 2012-08-22
惠州市新宏泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The common disadvantages of the iron-copper powders prepared by the above three traditional methods are: (1) the particle size of the powder is relatively coarse and all ≥ 3 μm. Alloy powder and the report of its preparation are extremely rare at present; FeCu powder, the Cu content is generally 20-50%; (3) the degree of alloying is about 85-95%, that is, 5-15% of the Fe and Cu components in the finished powder are segregated, no alloy is formed, and the degree of alloying Inhomogeneous; (4) Among them, the cost of atomized powder is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Iron-5% copper alloy powder:

[0028] 1. In the ball mill tank of the planetary high-energy ball mill, add: -200 mesh industrial raw material grade iron oxalate powder: 100 parts, -200 mesh industrial raw material grade copper oxide powder: 1.48 parts, converted to: weight of iron and copper The ratio is 95:5; the grinding and dispersing agent octadecanoic acid is added according to the 1% ratio of the total weight of iron and copper, and the cemented carbide grinding ball is added according to the weight ratio of raw material powder: ball=1:10, and the diameter of the grinding ball is φ3 and φ15mm, φ3:φ15=3~7:7; after the ball mill jar is tightly sealed, start high-energy ball milling.

[0029] 2. Control the rotating speed of the ball mill tank to 400 rpm and the ball milling time to 30 hours to obtain fine powder.

[0030] 3. Put the fine powder in H 2 Reduction in a reduction furnace, control the reduction temperature to 450°C, reduce H 2 Flow: 3m 3 / hr, hydroge...

Embodiment 2

[0033] Iron-20% Copper Alloy Powder:

[0034] 1. In the ball mill tank of the planetary high-energy ball mill, add: -200 mesh industrial raw material grade iron oxalate powder: 100 parts, -200 mesh industrial raw material grade copper oxide powder: 5.92 parts, converted to: weight of iron and copper The ratio is 80:20; the grinding and dispersing agent stearic acid is added according to the 1% ratio of the total weight of iron and copper, and the cemented carbide grinding ball is added according to the weight ratio of raw material powder: ball=1:10, and the diameter of the grinding ball is φ3 and φ15mm, φ3:φ15=5:7; after the ball mill jar is tightly sealed, start high-energy ball milling.

[0035] 2. Control the rotating speed of the ball mill tank to 300 rpm and the ball milling time to 60 hours to obtain fine powder.

[0036] 3. Put the fine powder in H 2 Reduction in a reduction furnace, control the reduction temperature to 550°C, reduce H 2 Flow: 3.5m 3 / hr, the hydrog...

Embodiment 3

[0039] Iron-50% Copper Alloy Powder:

[0040] 1. In the ball mill tank of the planetary high-energy ball mill, add: -200 mesh industrial raw material grade iron oxalate powder: 100 parts, -200 mesh industrial raw material grade copper oxide powder: 14.8 parts, converted to: the weight of iron and copper The ratio is 50:50; the grinding and dispersing agent stearic acid is added according to the 1% ratio of the total weight of iron and copper, and the cemented carbide grinding ball is added according to the weight ratio of raw material powder: ball=1:10, and the diameter of the grinding ball is φ3 and φ15mm, φ3:φ15=3~7:7; after the ball mill jar is tightly sealed, start high-energy ball milling.

[0041] 2. Control the rotating speed of the ball mill tank to 250 rpm and the ball milling time to 80 hours to obtain fine powder.

[0042] 3. Put the fine powder in H 2 Reduction in a reduction furnace, control the reduction temperature to 600°C, reduce H 2 Flow: 4m 3 / hr, the de...

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Abstract

The invention relates to superfine iron-copper alloy powder and a preparation method thereof. The superfine iron-copper alloy powder is prepared by using ferric oxalate powder at an industrial raw material stage and cupric oxide powder at an industrial raw material stage as raw materials through high-energy ball milling and hydrogen reduction and has a fisher particle size smaller than 1.0 microns and a oxygen content smaller than or equal to 0.5 percent by weight. The invention has the advantages that grains of the superfine iron-copper alloy powder are thinner, the physical and chemical properties are superior, and the manufacture cost is low.

Description

technical field [0001] The invention relates to the field of metallurgy industry, more specifically, the invention relates to a powder metallurgy product and a preparation method thereof. Background technique [0002] Iron-copper powder is the raw material for manufacturing iron-copper-based powder metallurgy parts, and has a wide market demand in aerospace, machinery, automobile, electrical appliances and other industries. [0003] Traditional iron-copper powder preparation methods mainly include: (1) mechanical mixing method, that is, directly mechanically mixing iron powder and copper powder; (2) copper-coated iron powder, that is, coating iron powder with copper by electroless plating (3) Atomization method, that is, adopting first melting iron-copper metal and then atomizing into iron-copper powder. [0004] The common disadvantages of the iron-copper powders prepared by the above three traditional methods are: (1) the particle size of the powder is relatively coarse a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/22
Inventor 刘沙徐尔森
Owner 惠州市新宏泰科技有限公司
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