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Pre-hardening treatment method of high manganese steel

A technology of pre-hardening treatment and high manganese steel, which is applied in the field of high manganese steel manufacturing in the metallurgical industry, can solve the problems of poor pre-hardening effect of high manganese steel, achieve hardening effect, increase thickness, and reduce overall product cost

Inactive Publication Date: 2020-04-07
柳州市双铠工业技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a pre-hardening treatment method for high manganese steel, which can solve the problem of poor pre-hardening effect of existing high manganese steel

Method used

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  • Pre-hardening treatment method of high manganese steel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] This embodiment selects high manganese steel casting hole plate and high manganese steel plug nail made by Mn13, the diameter of the through hole of high manganese steel casting hole plate is 10mm, and the diameter of high manganese steel plug nail is 10.3mm. The pre-hardening treatment method includes the following steps: insert the cone end of the high manganese steel plug nail into the through hole of the high manganese steel cast orifice plate, and then put the assembled workpiece into a temperature-controlled furnace for heating, and the temperature is controlled at 200 ℃; after heating, use a heavy-duty impact machine with a pressure of 1,000 tons to smash the high-manganese steel plug nails with temperature into the through-holes of the high-manganese steel cast orifice plate; The temperature in the tank is controlled at -180°C, and after keeping for 3 hours, it is taken out to form a finished product.

Embodiment 2

[0025] This embodiment selects high manganese steel cast hole plate and high manganese steel plug nail made by Mn17, the diameter of the through hole of high manganese steel cast hole plate is 20mm, and the diameter of high manganese steel plug nail is 20.5mm. The pre-hardening treatment method includes the following steps: insert the cone end of the high manganese steel plug nail into the through hole of the high manganese steel cast orifice plate, and then put the assembled workpiece into a temperature-controlled furnace for heating, and the temperature is controlled at 230 ℃; After heating, use a heavy-duty impact machine with a pressure of 1200 tons to smash the high-manganese steel plug nails with temperature into the through-holes of the high-manganese steel cast orifice plate; The temperature in the tank was controlled at -190°C, and after keeping for 2.5 hours, it was taken out to form a finished product.

Embodiment 3

[0027] This embodiment selects high manganese steel casting hole plate and high manganese steel plug nail made by Mn20, the diameter of the through hole of high manganese steel casting hole plate is 30mm, the diameter of high manganese steel plug nail is 30.8mm, the high manganese steel The pre-hardening treatment method includes the following steps: insert the cone end of the high manganese steel plug nail into the through hole of the high manganese steel cast orifice plate, and then put the assembled workpiece into a temperature-controlled furnace for heating, and the temperature is controlled at 260 ℃; after heating, use a heavy-duty impact machine with a pressure of 1400 tons to smash the high-manganese steel plug nails with temperature into the through-holes of the high-manganese steel cast orifice plate; The temperature in the tank is controlled at -200°C, and after keeping for 2 hours, it is taken out to form a finished product.

[0028] The properties of the high manga...

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Abstract

The invention discloses a pre-hardening treatment method of high manganese steel, and relates to the technical field of manufacturing of high manganese steel in the metallurgical industry. According to the method, a high manganese steel cast hole plate and high manganese steel plug pins are heated, the high manganese steel plug pins are smashed into holes of the high manganese steel cast hole plate through heavy impacting, and then quick freezing is carried out for a period of time. The problem that the existing high manganese steel pre-hardening effect is poor is solved.

Description

technical field [0001] The invention relates to the technical field of manufacturing high manganese steel in the metallurgical industry, in particular to a pre-hardening treatment method for high manganese steel. Background technique [0002] High manganese steel is a relatively common metal wear-resistant material, and the domestic production process is relatively mature. It is mainly used to form a work-hardened layer on the surface under heavy impact load or rolling pressure, but the core of the product maintains good plastic toughness. Such a material can not only play a wear-resistant role but also prevent the brittle fracture of the workpiece under the working conditions of impact wear. The main application conditions include liner products such as crushers and mills. However, the work hardening principle of high manganese steel is relatively complicated, including martensitic transformation theory, organized dislocation theory, luan crystal theory, etc., and the actua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D6/04C21D7/13
CPCC21D6/04C21D7/13
Inventor 韦成勋
Owner 柳州市双铠工业技术有限公司
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