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Novel lightweight high manganese steel wear-resisting material

A wear-resistant material, high manganese steel technology, applied in the field of high manganese steel, can solve the problems of small impact load, increase production cost, reduce the service life of castings, etc., to achieve improved performance, excellent toughness and plasticity, and improved wear resistance Effect

Inactive Publication Date: 2018-02-09
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the density of the high-manganese steel liner smelted in the patent is reduced by 9.0% to 15.0%, and the wear resistance is increased by more than 40% compared with ordinary high-manganese steel, but when used on some small and medium-sized crushers, due to the impact of the casting The load is small, and its work hardening ability cannot be fully exerted, which reduces the service life of the casting and increases the production cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] In this embodiment, by weight percentage, the chemical composition of the novel lightweight high manganese steel wear-resistant material is:

[0030] C: 1.02%; Si: 0.53%; Mn: 13.89%; Al: 2.25%; Cr: 1.45%; mixed rare earths of La+Ce+Pr+Nd: 0.26%; P: 0.03%; The amount is Fe. In the mixed rare earth of La+Ce+Pr+Nd, by weight percentage, La: 20%; Ce: 60%; Pr: 5%; Nd: 15%.

[0031] In this embodiment, the preparation method of the novel lightweight high manganese steel wear-resistant material is implemented according to the following steps:

[0032] (1) Weigh the required raw materials according to the weight percentage of the formula components, and then add them to the induction furnace for smelting. The Al element is added in the form of Al-Fe alloy. The adding temperature is 1530°C, and the tapping temperature is controlled at 1500°C. When the temperature drops to 1460°C, pour it into the mold.

[0033] (2) Heat treatment: heat at a heating rate of 100°C / h from room t...

Embodiment 2

[0037] In this embodiment, by weight percentage, the chemical composition of the novel lightweight high manganese steel wear-resistant material is:

[0038] C: 1.26%; Si: 0.82%; Mn: 19.21%; Al: 4.52%; Cr: 1.53%; mixed rare earths of La+Ce+Pr+Nd: 0.31%; P: 0.015%; The amount is Fe. In the mixed rare earth of La+Ce+Pr+Nd, by weight percentage, La: 18%; Ce: 58%; Pr: 8%; Nd: 16%.

[0039] In this embodiment, the preparation method of the novel lightweight high manganese steel wear-resistant material is implemented according to the following steps:

[0040](1) Weigh the required raw materials according to the weight percentage of the formula components, and then add them to the induction furnace for smelting. The Al element is added in the form of Al-Fe alloy. The adding temperature is 1530°C, and the tapping temperature is controlled at 1500°C. When the temperature drops to 1460°C, pour it into the mold.

[0041] (2) Heat treatment: heat at a heating rate of 100°C / h from room t...

Embodiment 3

[0045] In this embodiment, by weight percentage, the chemical composition of the novel lightweight high manganese steel wear-resistant material is:

[0046] C: 1.17%; Si: 0.67%; Mn: 18.06%; Al: 3.15%; Cr: 1.47%; mixed rare earths of La+Ce+Pr+Nd: 0.29%; P: 0.013%; The amount is Fe. In the mixed rare earth of La+Ce+Pr+Nd, by weight percentage, La: 21%; Ce: 56%; Pr: 6%; Nd: 17%.

[0047] In this embodiment, the preparation method of the novel lightweight high manganese steel wear-resistant material is implemented according to the following steps:

[0048] (1) Weigh the required raw materials according to the weight percentage of the formula components, and then add them to the induction furnace for smelting. The Al element is added in the form of Al-Fe alloy. The adding temperature is 1530°C, and the tapping temperature is controlled at 1500°C. When the temperature drops to 1460°C, pour it into the mold.

[0049] (2) Heat treatment: heat at a heating rate of 100°C / h from room ...

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Abstract

The invention relates to the field of high manganese steel wear-resisting materials, in particular to a novel lightweight high manganese steel wear-resisting material. The wear-resisting material canbe used in the wear-resisting fields of mine, building materials, railways and the like which bearing impulse loads, such as a ball mill liner, a crusher hammer head and a railway turnout. The wear-resisting material comprises, by weight, 0.90-1.30% of C, 0.40-0.90% of Si, 12-20% of Mn, 1.0-5.0% of Al, 1.0-2.5% of Cr, 0.1-0.5% of misch metal of La+Ce+Pr+Nd, less than 0.04% of P, less than 0.04% ofS and the balance Fe. The density of the lightweight high manganese steel wear-resisting material is 7.10-7.65 g / cm3 and is decreased by 1.7-8.5% compared with the density of traditional high manganese steel. In addition, the lightweight high manganese steel wear-resistant material also has excellent toughness and plasticity, and the abrasion resistance of the lightweight high manganese steel wear-resistant material is increased by more than 30% compared with the abrasion resistance of the traditional high manganese steel wear-resisting material.

Description

technical field [0001] The invention relates to the field of high manganese steel, specifically a novel lightweight high manganese steel wear-resistant material, which can be used in wear-resistant fields such as mines, building materials, railways, etc. that bear impact loads, such as: ball mill liners, crusher hammers and railway turnouts, etc. Background technique [0002] As the earliest wear-resistant material, high manganese steel has been researched and used for nearly a hundred years. It is widely used in metallurgy, mining, building materials, railways, electric power, coal and other mechanical equipment that are subjected to impact loads all year round. However, with the complex working conditions of high manganese steel castings and the continuous increase in the operating speed of mechanical equipment, high energy consumption, serious pollution, and severe impact wear in the working process lead to low life and mechanical efficiency, and it is difficult to achiev...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/18C21D1/18C21D6/00
CPCC22C38/02C21D1/18C21D6/002C21D6/005C21D6/008C21D2211/001C22C38/005C22C38/04C22C38/06C22C38/18
Inventor 刘越魏顺华
Owner NORTHEASTERN UNIV
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