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Heat treatment technology of ZG18MnCrMoRE steel

A process and water quenching technology, applied in the field of material science, can solve the problems of unsatisfactory strength, elongation and impact toughness of ZG18MnCrMoNiRE

Inactive Publication Date: 2015-05-27
李达
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The object of the present invention is to provide a heat treatment process of ZG18MnCrMoRE steel to solve the problem that the strength, elongation and impact toughness of ZG18MnCrMoNiRE are not ideal

Method used

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  • Heat treatment technology of ZG18MnCrMoRE steel
  • Heat treatment technology of ZG18MnCrMoRE steel
  • Heat treatment technology of ZG18MnCrMoRE steel

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[0015] 1 heat treatment process

[0016] Process 1: annealing + quenching and tempering, that is: heat preservation at 930 °C for 100 min, then air cooling with furnace to 550 °C; water quenching at 900 °C for 100 min, water quenching at 530 °C for 3 h.

[0017] Process 2: normalizing + quenching and tempering, namely: holding at 910 °C for 100 min in air cooling; holding at 900 °C for 100 min with water quenching, and holding at 530 °C for 3 h in water.

[0018] Process 3: annealing + normalizing + quenching and tempering, namely: holding at 930°C for 100 minutes, then cooling with the furnace to 550°C in air; holding at 910°C for 100 minutes in air cooling; holding at 900°C for 100 minutes and water quenching at 530°C for 3 hours.

[0019] 2 Effect of heat treatment process on test steel structure

[0020] The microstructures of ZG18MnCrMoRE steel after three different heat treatments are all tempered sorbite maintaining the martensitic orientation. Among the three hea...

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Abstract

The invention provides a heat treatment technology of ZG18MnCrMoRE steel. The technology comprises the following steps: 1 annealing and tempering: carrying out heat preservation at 930 DEG C for 100 minutes, cooling with a furnace to 550 DEG C, carrying out air cooling, carrying out heat preservation at 900 DEG C for 100 minutes and water quenching, and carrying out heat preservation at 530 DEG C for 3 hours and water quenching; 2 normalizing and tempering: carrying out heat preservation at 910 DEG C for 100 minutes and air cooling, carrying out heat preservation at 900 DEG C for 100 minutes and water quenching, and carrying out heat preservation at 530 DEG C for 3 hours and water quenching; and 3 annealing, normalizing and tempering: carrying out heat preservation at 930 DEG C for 100 minutes, cooling with a furnace to 550 DEG C, carrying out air cooling, carrying out heat preservation at 910 DEG C for 100 minutes and air cooling, carrying out heat preservation at 900 DEG C for 100 minutes and water quenching, and carrying out heat preservation at 530 DEG C for 3 hours and water quenching. According to the heat treatment technology, the problems that the strength, the elongation and the impact toughness of the ZG18MnCrMoRE are not ideal are solved. The heat treatment technology belongs to the field of material science.

Description

technical field [0001] The invention relates to a heat treatment process and belongs to the field of material science. Background technique [0002] The as-cast structure of ZG18MnCrMoRE is fine pearlite, acicular ferrite and a small amount of massive ferrite. The fine pearlite aggregates and distributes in the local area, showing obvious segregation distribution, and the fine pearlite and acicular ferrite become more obvious after zooming in. The as-cast structure of ZG18MnCrMoNiRE is a large amount of massive ferrite, pearlite and a small amount of acicular ferrite. The strength, elongation and impact toughness of ZG18MnCrMoNiRE are not ideal. Contents of the invention [0003] The object of the present invention is to provide a heat treatment process of ZG18MnCrMoRE steel to solve the problem that the strength, elongation and impact toughness of ZG18MnCrMoNiRE are not ideal. [0004] The scheme of the present invention is as follows: a kind of heat treatment process o...

Claims

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Application Information

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IPC IPC(8): C21D6/00C21D1/26C21D1/25C21D1/28
Inventor 李娜
Owner 李达
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