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Method for producing high-manganses wear resistant steel plate and steel plate produced thereby

A production method and technology of wear-resistant steel plates, which are applied in furnaces, heat treatment equipment, heat treatment furnaces, etc., can solve the problems of urgent changes in high manganese steel production technology, low production efficiency, and energy waste, so as to reduce production pollution and protect Environment, the effect of reducing production investment

Inactive Publication Date: 2009-05-06
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] High manganese steel castings and high chromium cast iron will cause environmental pollution during smelting and production. At the same time, due to low production efficiency, it will cause a lot of waste of resources and energy.
The service life of high manganese steel castings is short when used in a small impact and low pressure environment. These problems that cannot be ignored have made it urgent to change the production technology of high manganese steel.

Method used

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  • Method for producing high-manganses wear resistant steel plate and steel plate produced thereby
  • Method for producing high-manganses wear resistant steel plate and steel plate produced thereby
  • Method for producing high-manganses wear resistant steel plate and steel plate produced thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: Production of cold-rolled high manganese steel plate

[0029] Heat the steel slab after rough rolling, grinding and finishing to 1200°C (furnace temperature) for hot rolling, the initial rolling temperature is 1100°C (steel temperature), and the final rolling temperature is not lower than 900°C (steel temperature), to obtain Hot rolled high manganese steel plate. After the steel plate is trimmed and solid-solution heat treated, it is made into a steel plate with a width ≥ 500mm, a length ≥ 1000mm, and a thickness of 6-40mm. Then it is cold-rolled at a compression ratio of 15%-50% to a thickness of 1-30mm to obtain a cold-rolled high manganese steel plate.

Embodiment 2

[0031] Embodiment 2: mechanical performance detection

[0032] According to the known technical standards in this technical field, the actual performance is measured, and the results are compared in Table 2 (taking the thickness of 10mm as an example):

[0033] Table 2 Performance comparison

[0034] High manganese

[0035] It can be seen from the measured performance data that the strength performance of the high manganese wear-resistant steel plate prepared by the method of the present invention is obviously improved, but the elongation is reduced. As the most important hardness index of wear-resistant materials, it has been effectively improved.

Embodiment 3

[0036] Example 3: Comparative test of anti-strong impact and high pressure wear performance

[0037] Take high manganese steel castings (containing 13% Mn), high chromium cast iron (containing 20% ​​Cr), domestic NM420 wear-resistant steel plates, imported tough up to 400 steel plates, hot-rolled high-manganese steel plates, cold-rolled high-manganese steel plates. The width is 500mm×500mm, and the thickness is different (due to the limitation of the material source, the thickness cannot be unified, and the thickness tolerance standard is GB709). Ten test points are selected for each steel plate, and then put into the shot blasting chamber of the shot blasting machine with a greater impact The parts most likely to be damaged by steel shots are hit. The test conditions are: the distance between the steel plate and the projectile head is 700mm, and the projectile is a steel wire cut shot with a diameter of 1.5mm; direct impact; the projectile speed is 75m / s; the angle between the...

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Abstract

The invention relates to the technical field of steel production, in particular to a method for producing high-manganese wear-resistant steel plates, as well as a steel plate produced by the method. The invention discloses a method for producing high-manganese wear-resistant steel plates, which comprises the following steps of cold-rolling a hot-rolled high-manganese steel plate and obtaining a cold-rolled high-manganese steel plate. The production method has the advantages that the method is simple in steps, can fully utilize the prior equipment, reduce the production investment of enterprises, improves the properties of high-manganese steel and wear resistance, effectively increases the life span of the high-manganese steel, expands application range, and ensures that the high-manganese wear-resistant steel plates can completely replace high-manganese steel castings and high-chromium cast iron in environments of using plates. In addition, the production method reduces production pollution, protects environment, and saves resources and energy.

Description

technical field [0001] The invention relates to the technical field of iron and steel production, in particular to a production method of a high manganese wear-resistant steel plate and the produced steel plate. Background technique [0002] Statistics show that in 2001, the domestic demand for special medium-thick plates was 508,200 tons. Among them, the market demand for wear-resistant steel plates is 222,000 tons, accounting for 43.7% of the total. [0003] In 1882, British Hadfield invented high manganese steel. For more than 100 years, high manganese steel has been widely used, but its basic composition has not changed much. High manganese steel is a wear-resistant steel with high carbon and manganese content, which has strong work hardening ability. When it is used under the conditions of strong impact and high pressure wear, the surface of the workpiece will be hardened, and the Brinell hardness will increase from HB190 to about HB500. Good toughness and plasticit...

Claims

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Application Information

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IPC IPC(8): C21D8/02C21D9/52C22C38/38
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