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Preparation method of high-molybdenum-content ferro-molybdenum powder for powder metallurgy

A powder metallurgy, molybdenum iron powder technology, applied in the field of powder material preparation, can solve major technical problems and other problems, achieve the effect of simple process flow, increase optional range, and improve powder quality

Pending Publication Date: 2021-03-19
安徽省瑞达钨钼材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ferromolybdenum powder prepared by this method generally contains 50-60% molybdenum, and its grades are mainly FeMo55, FeMo60 and FeMo70, etc. There are still relatively large technical problems in the production of ferromolybdenum powder with a Mo content greater than 70%.

Method used

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  • Preparation method of high-molybdenum-content ferro-molybdenum powder for powder metallurgy
  • Preparation method of high-molybdenum-content ferro-molybdenum powder for powder metallurgy
  • Preparation method of high-molybdenum-content ferro-molybdenum powder for powder metallurgy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The present embodiment prepares ferromolybdenum powder according to the following steps:

[0021] Use negative 100 mesh reduced iron powder and negative 400 mesh molybdenum powder as raw materials, the mass ratio of Fe to Mo is 29:71; mix on a V-type mixer for 60 minutes; put 500g of mixed powder and grinding balls in a ball mill tank, and the The quality is 15 times of the powder mass; the ball milling speed is controlled in the range of 400r / min on the ball mill, and the ball milling time is 2h; 2 Ferromolybdenum powder was obtained after being treated in the atmosphere for 90 minutes.

Embodiment 2

[0023] The present embodiment prepares ferromolybdenum powder according to the following steps:

[0024] Use minus 100 mesh atomized iron powder and minus 400 mesh molybdenum powder as raw materials, the mass ratio of Fe and Mo is 29:71; mix on a V-type mixer for 90 minutes; put 500g of mixed powder and balls in a ball mill tank, and grind The mass of the ball is 10 times the mass of the powder; the ball milling speed is controlled within the range of 450r / min on the ball mill, and the ball milling time is 90min; 2 The ferromolybdenum powder was obtained after being treated in the atmosphere for 60 minutes.

Embodiment 3

[0026] The present embodiment prepares ferromolybdenum powder according to the following steps:

[0027] Use negative 100 mesh reduced iron powder and negative 400 mesh molybdenum powder as raw materials, the mass ratio of Fe to Mo is 20:80; mix on a V-type mixer for 60 minutes; put 500g of mixed powder and grinding balls in a ball mill tank, and The quality is 20 times of the powder mass; the ball milling speed is controlled in the range of 400r / min on the ball mill, and the ball milling time is 2h; 2 Ferromolybdenum powder was obtained after being treated in the atmosphere for 90 minutes.

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Abstract

The invention relates to a preparation method of high-molybdenum-content ferro-molybdenum powder for powder metallurgy. The preparation method comprises the following steps of using reduced iron powder or atomized iron powder and molybdenum powder as raw materials, carrying out ball milling treatment on the mixed powder, and carrying out reduction and annealing treatment in H2 atmosphere to obtainferro-molybdenum alloy powder. According to the preparation method of the high-molybdenum-content ferro-molybdenum powder for powder metallurgy, the selectable range of the raw materials can be widened, the production cost is reduced, the production efficiency is improved, the preparation method is suitable for industrial batch production, and the powder quality is remarkably improved; and the high-molybdenum-content ferro-molybdenum powder prepared by adopting the technical scheme is high in yield and low in content of copper and other impurities, has the characteristics of high molybdenum content and low oxygen content, and can be used for preparing high-performance alloy steel and powder metallurgy materials.

Description

technical field [0001] The invention belongs to the technical field of powder material preparation, and in particular relates to a method for preparing ferromolybdenum powder with high molybdenum content for powder metallurgy. Background technique [0002] The main use of ferromolybdenum powder is as an additive of molybdenum in steelmaking. Adding molybdenum to the steel can make the steel have a uniform fine-grained structure, improve the hardenability of the steel, and help eliminate temper brittleness. In high-speed steel, molybdenum can replace part of tungsten. Molybdenum is widely used in combination with other alloying elements to produce stainless steel, heat-resistant steel, acid-resistant steel and tool steel, as well as alloys with special physical properties. Adding molybdenum to cast iron can increase its strength and wear resistance. Ferromolybdenum is an alloy of molybdenum and iron, and is an important raw material alloy powder for powder metallurgy produc...

Claims

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Application Information

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IPC IPC(8): B22F9/04C22C27/04B22F1/00
CPCB22F1/0003B22F9/04C22C27/04B22F2009/043B22F2009/041B22F2201/013B22F2301/20B22F2301/35B22F1/142
Inventor 刘敏陈闻超王秀芬汤家六
Owner 安徽省瑞达钨钼材料有限公司
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