Heat treatment technology for stainless steel

A stainless steel and process technology, applied in the field of heat treatment, can solve problems such as complicated procedures and waste of resources, and achieve the effect of improving process efficiency and reducing treatment costs

Inactive Publication Date: 2015-11-04
WUXI YANGGONG MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the comprehensive and good comprehensive performance of austenitic stainless steel, it has been widely used in various industries, which makes the traditional austenitic stainless steel seamless steel pipe unable to meet the requirements, not only wastes resources, but also complicates the process

Method used

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Examples

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Embodiment Construction

[0012] The embodiment provided by the present invention is described in further detail:

[0013] A stainless steel heat treatment process, the steps are as follows:

[0014] (1) Blank inspection: inspect the workpiece;

[0015] (2) Degreasing: Degreasing the workpiece steel until the workpiece is completely soaked;

[0016] (3) Solution treatment: heat the steel to 850-1050°C and quench it in water, and keep this state at room temperature;

[0017] (4) Stabilization treatment: heat the steel to 750-800°C and then air-cool it. At this time, the carbides of Cr are completely dissolved, while the carbides of titanium are not completely dissolved, and are fully separated out during the cooling process, making it impossible for carbon to Then form lattice carbides, thus effectively eliminating intergranular corrosion;

[0018] (5) Stress relief treatment: heating to 300-350°C and tempering to eliminate the residual stress of steel after cold working or welding;

[0019] (6) Coo...

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PUM

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Abstract

The invention discloses a heat treatment technology for stainless steel. The heat treatment technology includes the first step of blank checking, the second step of degreasing, the third step of solid solution treating, the fourth step of stabilizing treating, the fifth step of distressing and the sixth step of cooling. The heat treatment technology is low in treating cost, durable in use and capable of improving the technology treatment efficiency and the quality of a workpiece.

Description

technical field [0001] The invention belongs to the technical field of heat treatment, in particular to a stainless steel heat treatment process. Background technique [0002] At present, stainless steel seamless steel pipe is a long strip of steel with a hollow section and no seams around it. It is a steel pipe that is resistant to weak corrosive media such as air, steam, and water, and chemically corrosive media such as acids, alkalis, and salts. Also known as stainless acid-resistant steel pipe, with the implementation of my country's reform and opening up policy, the national economy has achieved rapid growth, and a large number of urban residences, public buildings and tourist facilities have been built, which puts forward new requirements for hot water supply and domestic water supply. Especially water problems, people more and more valued, pleas also driving forward. Galvanized steel pipe, a commonly used pipe material, will gradually withdraw from the historical st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D6/00C21D1/30
Inventor 杨龙兴
Owner WUXI YANGGONG MACHINERY MFG
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