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Anti-rust steel plate heat treatment process

A technology of preheating and steel plates, applied in heat treatment furnaces, heat treatment equipment, manufacturing tools, etc., can solve problems such as easy to rust, achieve slow down the speed of rust, significant social and economic benefits, and high engineering application value Effect

Inactive Publication Date: 2017-06-06
格润德(青岛)新型环保建材有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention addresses the above problems, and researches and designs a heat treatment process to solve the shortcoming that the steel plate produced by the existing heat treatment process is easy to rust in the process of use.

Method used

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Embodiment Construction

[0014] A heat treatment process for an antirust steel plate, characterized in that it comprises the following process steps:

[0015] (1) Preheating treatment: put the steel plate into the heating furnace, increase the temperature of the heating furnace to reach 450°C-600°C, and feed methanol as a protective gas for 3 hours;

[0016] (2) Heat treatment: raise the temperature of the heating furnace with the steel plate to 950°C-1100°C for 4 hours; (3) Quenching: put the steel plate taken out into quenching oil for cooling, when the temperature of the steel plate drops to 80°C At -150°C, take out the steel plate and air cool to room temperature;

[0017] (4) Tempering treatment: Put the quenched and cooled steel plate into the tempering furnace, increase the temperature of the tempering furnace to reach 550°C-600°C for 2 hours, take out the steel plate and put it into sodium hydroxide and sodium nitrite solution , when the temperature of the solution drops to 50°C-80°C, fill th...

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Abstract

The invention discloses an anti-rust steel plate heat treatment process, which comprises: (1) pre-heating treatment: placing a steel plate into a heating furnace, and increasing the temperature of the heating furnace to achieve 450-600 DEG C; (2) heat treatment: increasing the temperature of the heating furnace with the placed steel plate to 950-1100 DEG C, and maintaining for 4 h; (3) quenching: placing the taken steel plate into quenching oil, and cooling; (4) tempering: placing the quenched and cooled steel plate into a tempering furnace, increasing the temperature of the tempering furnace to achieve 550-600 DEG C, maintaining for 2 h, taking out the steel plate, placing into a sodium hydroxide and sodium nitrite solution, and carrying out water cooling to a room temperature. According to the present invention, the steel plate produced through the heat treatment process does not easily produce the rust caused by oxidation corrosion, and the heat treatment process of the present invention is the heat treatment process used in the industry.

Description

technical field [0001] The present invention relates to a heat treatment process used in industry. Background technique [0002] In the existing industrial production, steel plates are used in many places. Many industrial equipment use steel plates as shells, and steel plates are also used in many places in the internal structure. In daily life, the use of steel plates can be seen everywhere, but we will find that, After being exposed to wind and rain, many steel plates will gradually appear rust, which not only makes us unattractive during use, but also leads to a decrease in the strength of the steel plate, resulting in soft rust on the outer layer of the steel plate, causing the entire The damage of the object, so how to prevent the steel plate from rusting is a problem that we urgently need to solve. Contents of the invention [0003] The present invention addresses the above problems, and researches and designs a heat treatment process to solve the shortcoming that t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/18C21D9/00
CPCC21D1/18C21D9/0081
Inventor 黄亚楠
Owner 格润德(青岛)新型环保建材有限公司
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