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High-strength high-toughness abrasion-resistant cast steel material and preparation method thereof

A high-toughness, cast steel technology, applied in the development and process preparation of high-performance new materials, can solve the problems of insufficient wear resistance and toughness, and high cost of channel side materials

Active Publication Date: 2016-05-04
SHANXI ZHONGTIAOSHAN MECHANICAL & ELECTRONICS EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]The present invention provides a high-strength and high-toughness wear-resistant cast steel in order to solve the technical problems of high cost of channel side materials, insufficient wear resistance and toughness performance. Materials and Preparation Methods

Method used

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  • High-strength high-toughness abrasion-resistant cast steel material and preparation method thereof
  • High-strength high-toughness abrasion-resistant cast steel material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1 one A high-strength and high-toughness wear-resistant cast steel material and a preparation method thereof, using the following raw materials: scrap steel, pig iron, ferrochrome alloy, ferromanganese alloy, ferrosilicon alloy, ferromolybdenum alloy, ferroniobium alloy, ferroboron alloy, and mixed rare earths;

[0034] Include the following steps:

[0035] (1) Selection of chemical substances and materials

[0036] The quality and purity of the chemical substances used are controlled as follows (impurity content is lower than):

[0037] Ferrochrome: solid solid 0.2%

[0038] Ferromanganese alloy: solid solid 0.2%

[0039] Ferrosilicon alloy: solid solid 0.2%

[0040] Molybdenum iron alloy: solid solid 0.2%

[0041] Niobium ferroalloy: solid solid 0.2%

[0042] Ferro-boron alloy: solid solid 0.2%

[0043] Mixed rare earths: solid solid 0.2%

[0044] (2) Smelting

[0045] Mix and heat scrap steel, pig iron, ferrochrome alloy and ferromolybdenum alloy, an...

Embodiment 2

[0052] Example 2 one A high-strength and high-toughness wear-resistant cast steel material and a preparation method thereof, using the following raw materials: scrap steel, pig iron, ferrochrome alloy, ferromanganese alloy, ferrosilicon alloy, ferromolybdenum alloy, ferroniobium alloy, ferroboron alloy, and mixed rare earths;

[0053] Include the following steps:

[0054] (1) Selection of chemical substances and materials

[0055] The quality and purity of the chemical substances used are controlled as follows (impurity content is lower than):

[0056] Ferrochrome: solid solid 0.2%

[0057] Ferromanganese alloy: solid solid 0.2%

[0058] Ferrosilicon alloy: solid solid 0.2%

[0059] Molybdenum iron alloy: solid solid 0.2%

[0060] Niobium ferroalloy: solid solid 0.2%

[0061] Ferro-boron alloy: solid solid 0.2%

[0062] Mixed rare earths: solid solid 0.2%

[0063] (2) Smelting

[0064] Mix and heat scrap steel, pig iron, ferrochrome alloy and ferromolybdenum alloy, an...

Embodiment 3

[0071] Example 3 one A high-strength and high-toughness wear-resistant cast steel material and a preparation method thereof, using the following raw materials: scrap steel, pig iron, ferrochrome alloy, ferromanganese alloy, ferrosilicon alloy, ferromolybdenum alloy, ferroniobium alloy, ferroboron alloy, and mixed rare earths;

[0072] Include the following steps:

[0073] (1) Selection of chemical substances and materials

[0074] The quality and purity of the chemical substances used are controlled as follows (impurity content is lower than):

[0075] Ferrochrome: solid solid 0.2%

[0076] Ferromanganese alloy: solid solid 0.2%

[0077] Ferrosilicon alloy: solid solid 0.2%

[0078] Molybdenum iron alloy: solid solid 0.2%

[0079] Niobium ferroalloy: solid solid 0.2%

[0080] Ferro-boron alloy: solid solid 0.2%

[0081] Mixed rare earths: solid solid 0.2%

[0082] (2) Smelting

[0083] Mix and heat scrap steel, pig iron, ferrochrome alloy and ferromolybdenum alloy, an...

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Abstract

The invention relates to a high-strength high-toughness abrasion-resistant cast steel material and a preparation method thereof. The novel high-strength high-toughness abrasion-resistant cast steel material is pertinently designed and developed for the severe working conditions that in the operation process, a trough side not only bears violent friction of coal, a scraper blade and a chain, but also bears operation load of a coal cutter, lateral force and longitudinal force used for pushing and pulling a hydraulic support, extrusion force and impact force generated when large sized coal and rock get stuck in a trough and the like. According to the mechanical performance indexes the cast steel material can reach, the tensile strength Rm>=900 MPa, the fracture elongation A>=16%, the impact absorbing energy Aku>=32J, and the Brinell hardness HB is 270-310. According to the abrasion resistance, weightlessness is 1.55+ / -0.03 g, and the weight loss ratio is 15.5+ / -0.3 mg / m. According to the preparation method, production is easy, the cost is low, and the performance is high. Quantity production and application can be achieved in the industries such as mines, energy, transportation, agricultural machinery and engineering machinery.

Description

technical field [0001] The invention relates to a high-strength, high-toughness wear-resistant cast steel material and a preparation method thereof, belonging to the technical field of development and process preparation of high-performance new materials. Background technique [0002] The scraper conveyor is the main transportation equipment of the fully mechanized coal mining face, and it is also the supporting equipment for the running track of the coal mining machine and the hydraulic support. It has been widely used in coal production. The middle trough is the main part of the scraper conveyor, and its mass accounts for more than 70% of the total mass of the scraper conveyor. The failure of the scraper conveyor is mainly caused by the excessive wear or fracture of the middle groove, so its usage and consumption are relatively large. According to incomplete statistics, fractures often occur due to insufficient design strength of the central trough or manufacturing defec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C38/12C22C38/04C22C33/06C21D1/18C21D1/28
CPCC21D1/18C21D1/28C21D2211/005C22C33/06C22C38/002C22C38/005C22C38/04C22C38/12C22C38/18
Inventor 侯利锋刘宝胜卫英慧吕仁杰席庆祥赵会琴吉鹏辉苏琳飞
Owner SHANXI ZHONGTIAOSHAN MECHANICAL & ELECTRONICS EQUIP
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