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High-strength wear-resisting FeB material preparation method

A high-strength, ferroboron technology is applied in the field of preparation of high-strength and wear-resistant FeB materials, which can solve the problems of long boronizing time, easy cracking, peeling, parts failure, etc., and achieves the effect of remarkable hardness, low price and long service life.

Active Publication Date: 2019-01-18
山东晶希瓷新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the steel boronizing treatment process requires high requirements, the boronizing time is relatively long, and the obtained boronizing layer is thin, which is easy to crack and peel off in long-term engineering applications, which will cause failure of its parts

Method used

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  • High-strength wear-resisting FeB material preparation method
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preparation example Construction

[0024] The invention provides a method for preparing a high-strength wear-resistant FeB material, comprising the following steps:

[0025] S1. Industrial pure iron and ferroboron are polished and derusted respectively, and the raw materials are calculated and weighed according to a certain ratio;

[0026] The chemical composition of pure iron, in terms of mass fraction, includes: ≥99.8% Fe, other elements ≤0.003% C, ≤0.02 Si, ≤0.15 Mn, ≤0.012% P, ≤0.01% S.

[0027] The chemical composition of ferroboron, in terms of mass fraction, includes: 19.5-20% of B, 0.6-0.8% of Si, 0.3-0.35% of C, 0.1-0.15% of Al, ≤0.04% of P, ≤0.01% of S, the balance is Fe.

[0028] When calculating the ratio of raw materials, the final mass fraction of boron element is 16.2%, and boron element needs to be added to achieve a burning loss rate of 8-10%.

[0029] S2. Fill pure iron into the smelting furnace, heat and melt it, when the temperature of the smelting furnace rises to 1550-1650°C, add aluminu...

Embodiment 1

[0037] According to the technical scheme of the present invention, the FeB material of the present invention is smelted in a 10kg intermediate frequency induction furnace, and the process steps are:

[0038] (1) Grinding and derusting industrial pure iron and ferroboron, weighing 1.107kg and 8.893kg respectively (considering the loss on ignition of 8% boron); (2) Filling pure iron into the smelting furnace , heating and melting, when the temperature of the smelting furnace rises to 1550°C, it is necessary to add aluminum wire to deoxidize the molten iron; (3) Break the ferroboron into pieces with a particle size of 5-15mm, and put it in a vacuum drying oven at 60°C Keep it warm for 10 hours and dry it. After the pure iron in the furnace is completely melted, add small pieces of ferroboron; (4) When the temperature reaches 1650°C, keep it warm for 10 minutes, and then pour it into a sand mold for casting. After cooling, a high-strength and wear-resistant FeB material is obtaine...

Embodiment 2

[0041] According to the technical scheme of the present invention, the FeB material of the present invention is smelted in a 10kg intermediate frequency induction furnace, and the process steps are:

[0042] (1) Grinding and derusting industrial pure iron and ferroboron, weighing 0.909kg and 9.091kg respectively (considering 10% loss on ignition of boron element); (2) Filling pure iron into the smelting furnace , heating and melting, when the temperature of the smelting furnace rises to 1600°C, it is necessary to add aluminum wire to deoxidize the molten iron; (3) Crush the ferroboron into pieces with a particle size of 5-15mm, and place it in a vacuum drying oven at 50°C Keep it warm for 15 hours and dry it. After the pure iron in the furnace is completely melted, add small pieces of ferroboron; (4) When the temperature reaches 1700°C, keep it warm for 10 minutes, and then pour it into a sand mold for casting. After cooling, a high-strength and wear-resistant FeB material is ...

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Abstract

The invention discloses a high-strength wear-resisting FeB material preparation method which comprises the steps: firstly, taking industrial pure iron and ferroboron and performing polishing and derusting treatment; then filling the industrial pure iron into a smelting furnace to be heated and molten; then adding the pretreated ferroboron; casting moulding in a sand mould and cooling to obtain thehigh-strength wear-resisting FeB material. The high-strength wear-resisting FeB material preparation method disclosed by the invention has the advantages that raw material cost is low, a material preparation process is simple, production cost is low, and the prepared FeB material is of a dense structure; the prepared FeB material further has high strength and hardness and obvious wear resistance;when the prepared FeB material is applied to wear-resisting parts, the service life of the wear-resisting parts is prolonged.

Description

technical field [0001] The invention belongs to the technical field of metal wear-resistant material preparation, and in particular relates to a preparation method of high-strength wear-resistant FeB material. Background technique [0002] Wear and tear is an important failure mode of mechanical equipment and parts, which not only leads to frequent replacement and maintenance of workpieces, reduces the working efficiency of equipment, but also consumes a lot of energy and materials, causing huge losses to the national economy. According to statistics, my country consumes more than 3 million tons of metal wear-resistant materials every year. Under the large demand for wear-resistant materials, the steel wear-resistant materials that have appeared in China have been produced on a large scale in wear-resistant austenitic manganese steel, wear-resistant white cast iron, wear-resistant alloy steel, wear-resistant ductile iron and wear-resistant steel-based composite materials An...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/06C21C7/06C22C38/02C22C38/04C22C38/06
CPCC21C7/0006C21C7/06C22C33/06C22C38/002C22C38/02C22C38/04C22C38/06
Inventor 李克敏皇志富坚永鑫申宇鹏王绍菲马汉文秦朝风
Owner 山东晶希瓷新材料科技有限公司
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