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Wear-resistant high-toughness steel material and preparation method thereof

A technology of high toughness steel and preparation steps, applied in metal processing equipment and other directions, can solve the problems of complex production process, short service life, poor use toughness, etc., and achieve the effects of improving mechanical strength, reducing wear and increasing compactness.

Active Publication Date: 2021-06-22
常州亿富泰特钢有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steel materials used in the existing wear-resistant cast steel liners have the technical problems of complex production process, short service life, poor toughness and poor wear resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Weigh the expandable graphite and put it in an oven, dry it to constant weight at 105°C, put the dried expandable graphite in a microwave reactor, treat it with a power of 1.5kW for 30s, cool it down to room temperature naturally, and repeat the microwave treatment Heat and expand 5 times to obtain expanded graphite;

[0046] Mix the expanded graphite obtained above with tungstic acid and ammonia water with a mass fraction of 10% in a mass ratio of 1:1:10, put them into an ultrasonic oscillator, and immerse them in an ultrasonic oscillation at a frequency of 30 kHz for 1 hour, and filter after the ultrasonic oscillation immersion Separation obtains filter residue, obtains pretreatment graphite;

[0047] Put the pretreated graphite obtained above into a high-temperature sintering furnace, heat up to 1550°C under the protective gas conditions of equal volume ratio of carbon monoxide and hydrogen, and heat-preserve and sinter for 2 hours. After the sintering treatment, a s...

Embodiment 2

[0052] Weigh the expandable graphite and put it in an oven, dry it at 108°C to constant weight, put the dried expandable graphite in a microwave reactor, treat it with a power of 1.8kW for 35s, cool it down to room temperature naturally, and repeat the microwave treatment Heated and expanded 7 times to obtain expanded graphite;

[0053] Mix the expanded graphite obtained above with tungstic acid and ammonia water with a mass fraction of 10% in a mass ratio of 1:1:10, put them into an ultrasonic oscillator, and immerse them in an ultrasonic oscillation at a frequency of 35 kHz for 1 hour, and filter after the ultrasonic oscillation immersion Separation obtains filter residue, obtains pretreatment graphite;

[0054] Put the pretreated graphite obtained above into a high-temperature sintering furnace, heat up to 1600°C under the protective gas conditions of equal volume ratio of carbon monoxide and hydrogen, and heat-preserve and sinter for 2 hours. After the sintering treatment,...

Embodiment 3

[0059] Weigh the expandable graphite and put it in an oven, dry it at 110°C to constant weight, put the dried expandable graphite in a microwave reactor, treat it with a power of 2.0kW for 40s, cool it down to room temperature naturally, and repeat the microwave treatment Heat and expand 8 times to obtain expanded graphite;

[0060] Mix the expanded graphite obtained above, tungstic acid, and ammonia water with a mass fraction of 10% in a mass ratio of 1:1:10, put them into an ultrasonic oscillator, and immerse them in an ultrasonic oscillation at a frequency of 40 kHz for 2 hours. After the ultrasonic oscillation immersion, filter Separation obtains filter residue, obtains pretreatment graphite;

[0061] Put the pretreated graphite obtained above into a high-temperature sintering furnace, heat up to 1650°C under the protective gas conditions of equal volume ratio of carbon monoxide and hydrogen, and heat-preserve and sinter for 3 hours. 100 mesh sieves to obtain anti-wear fi...

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Abstract

The invention relates to a wear-resistant high-toughness steel material and a preparation method thereof, and belongs to the technical field of special steel material preparation. According to the wear-resistant high-toughness steel material and the preparation method thereof, firstly, the toughness and mechanical strength of the steel material are preliminarily enhanced through a special molten steel formula, and then a tungsten carbide material with interlayer sliding anti-friction performance is prepared by using expanded graphite as a template and is used as an anti-wear filler, so that the wear resistance and toughness of the steel material are improved; and in addition, sodium silicate and hydrochloric acid are used for further modifying the surface of the wear-resistant material, the wear resistance and toughness of the steel material are further improved through modification, and the wear-resistant high-toughness steel material and the preparation method thereof have wide application prospects.

Description

technical field [0001] The invention relates to a wear-resistant high-toughness steel material and a preparation method thereof, belonging to the technical field of special steel material preparation. Background technique [0002] At present, with the depletion of rich ore resource reserves in the world and the increasing demand for them, the processing volume of lean ore processed into concentrate through ore dressing is increasing day by day. At the same time, the development of the mineral processing industry is constantly evolving towards a more optimized processing process. The obvious trend is to adopt a large-scale semi-autogenous mill process to replace the traditional intermediate processes such as medium crushing and fine crushing, so as to simplify the process and reduce infrastructure investment. The cost reduction, production cost reduction and production efficiency improvement have become the development trend of large mines at home and abroad. [0003] The li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/04C22C38/06C22C38/10B21J5/00C21D8/00C22C33/04
CPCC22C38/04C22C38/06C22C38/105C22C38/005C22C33/04B21J5/002C21D8/005
Inventor 奚浩泽
Owner 常州亿富泰特钢有限公司
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