Cryogenic treatment method for enhancing anti-fatigue strength of stainless steel wire mesh

A cryogenic treatment, stainless steel technology, applied in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve the problems of easy fracture and deformation, and achieve the effect of economical convenience, enhanced fatigue resistance, and improved fatigue resistance.

Pending Publication Date: 2019-08-27
GUIZHOU UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a cryogenic treatment method that can enhance the anti-fatigue strength of stainless steel wire mesh for the problem that the existing stainless steel wire mesh is easily deformed and easily broken when used as a screen on an ultrasonic vibrating screen

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  • Cryogenic treatment method for enhancing anti-fatigue strength of stainless steel wire mesh
  • Cryogenic treatment method for enhancing anti-fatigue strength of stainless steel wire mesh
  • Cryogenic treatment method for enhancing anti-fatigue strength of stainless steel wire mesh

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Effect test

Embodiment 1

[0023] Embodiment 1: a kind of cryogenic treatment method that strengthens stainless steel wire mesh anti-fatigue strength, it is characterized in that: comprise the following steps:

[0024] (1) Dip the stainless steel wire mesh into liquid nitrogen for liquid cryogenic treatment, the liquid nitrogen temperature is -196°C; the immersion time of the stainless steel wire mesh in liquid nitrogen is 30 minutes;

[0025] (2) Take the stainless steel wire mesh out of the liquid nitrogen directly and place it in the environment of a programmable temperature heating device with an initial temperature of -130°C and slowly return to the temperature for 30 minutes, and then place it in the air to return to room temperature for slow return. heat treatment;

[0026] (2) Temper the workpiece in a muffle furnace with a set control temperature of 200°C for 1 hour to relieve stress, and then air cool to room temperature.

[0027] The stainless steel wire mesh is 316L stainless steel wire mes...

Embodiment 2

[0031] Embodiment 2: a kind of cryogenic treatment method that strengthens stainless steel wire mesh anti-fatigue strength, it is characterized in that: comprise the following steps:

[0032] (1) Dip the stainless steel wire mesh into liquid nitrogen for liquid cryogenic treatment, the liquid nitrogen temperature is -196°C; the immersion time of the stainless steel wire mesh in liquid nitrogen is 10 minutes;

[0033] (2) Take the stainless steel wire mesh out of the liquid nitrogen directly and place it in the environment of a programmable temperature heating device with an initial temperature of -130°C and slowly return to the temperature for 30 minutes, and then place it in the air to return to room temperature for slow return. heat treatment;

[0034] (3) Repeat the above steps 2 times;

[0035] (4) Temper the workpiece in a muffle furnace with a set control temperature of 200°C for 1 hour to relieve stress, and then air cool to room temperature.

[0036] The stainless st...

Embodiment 3

[0040] Embodiment 3: a kind of cryogenic treatment method that strengthens stainless steel wire mesh anti-fatigue strength, it is characterized in that: comprise the following steps:

[0041] (1) Dip the stainless steel wire mesh into liquid nitrogen for liquid cryogenic treatment, the liquid nitrogen temperature is -196°C; the immersion time of the stainless steel wire mesh in liquid nitrogen is 10 minutes;

[0042] (2) Take the stainless steel wire mesh out of the liquid nitrogen directly and place it in the environment of a programmable temperature heating device with an initial temperature of -130°C and slowly return to the temperature for 30 minutes, and then place it in the air to return to room temperature for slow return. heat treatment;

[0043] (3) Repeat the above steps once;

[0044] (4) Temper the workpiece in a muffle furnace with a set control temperature of 200°C for 1 hour to relieve stress, and then air cool to room temperature.

[0045] The stainless steel...

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Abstract

The invention relates to a cryogenic treatment method for enhancing the anti-fatigue strength of a stainless steel wire mesh, and belongs to the technical field of stainless steel wire mesh heat treatment. The method comprises the following steps that 1, the stainless steel wire mesh is soaked into liquid nitrogen for liquid-method cryogenic treatment, wherein the temperature of the liquid nitrogen ranges from -196 DEG C to -160DEG C, and the soaking time of the stainless steel wire mesh in the liquid nitrogen ranges from 3 seconds to 30 minutes; 2, the stainless steel wire mesh is directly taken out from the liquid nitrogen and placed in a heating device to be slowly heated for 30-40 minutes, and then the stainless steel wire mesh is placed in air to be heated to room temperature for slowheating for the time determined according to the material and anti-fatigue strength of a workpiece, wherein the initial temperature of the heating device ranges from -130 DEG C to -110 DEG C, and thetemperature of the heating device can be controlled through a program; 3, the above steps are repeated for 0-2 times; and 4, the workpiece is put into a muffle furnace with a set control temperatureof 200 DEG C for tempering for 1 hour to eliminate stress, and then the workpiece is air-cooled to room temperature. The method has the following advantages that the anti-fatigue strength of the stainless steel wire mesh is effectively improved, the treatment method is economical and convenient, and the treatment efficiency is high.

Description

technical field [0001] The invention relates to the technical field of heat treatment of stainless steel wire mesh, in particular to a cryogenic treatment method for enhancing the anti-fatigue strength of stainless steel wire mesh. Background technique [0002] Silicon carbide micropowder is a common abrasive raw material in industry, and silicon carbide micropowder forms silicon carbide dust after separation and screening. Generally, the silicon carbide micropowder is processed into silicon carbide dust through an ultrasonic vibrating sieve. During the processing, the ultrasonic vibration wave (mechanical wave) makes the silicon carbide micropowder accept a huge ultrasonic acceleration, thereby separating the ultrafine powder and suppressing the powder. Blocking factors such as adhesion, friction, flat drop, wedging, etc. [0003] The abrasive industry has very strict requirements on the particles of abrasive products, and no particles larger than 30 microns can appear. Th...

Claims

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Application Information

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IPC IPC(8): C21D6/04C21D9/00
CPCC21D6/04C21D9/0068
Inventor 晋芳伟宋宝骏
Owner GUIZHOU UNIV OF ENG SCI
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