Heat Treatment Strengthening Technology of Stainless Steel Spring
Release Time:
Dec 21,2023
Protective atmosphere heat treatment. In our country, the heat treatment of stainless steel springs with wires less than 15mm, oil-quenched and tempered steel wires and toughened steel all use protective atmosphere heat treatment. Protective atmosphere heat treatment can ****** surface decarburization and oxidation, improve the surface quality of the material.
(1) Protective atmosphere heat treatment. In our country, the heat treatment of stainless steel springs with wires less than 15mm, oil-quenched and tempered steel wires and toughened steel all use protective atmosphere heat treatment. Protective atmosphere heat treatment can ****** surface decarburization and oxidation, improve the surface quality of the material.
(2) Heating or protective atmosphere heating heat treatment. This process is generally carried out on the wire before the forming of the spiral stainless steel spring. Some stainless steel spring factories put the wire material heat treatment and stainless steel spring production together to reduce costs. Heating treatment has a good strengthening effect, heating speed, help to refine the grain and reduce the surface decarburization, can give full play to and improve the strength and toughness of the material.
(3) Surface nitriding heat treatment technology. In recent years, high-stress valve stainless steel springs or other high-stress clutch stainless steel springs have also adopted surface nitriding technology in order to achieve reliable fatigue life. Now the more advanced process is low-temperature gas nitriding technology, and the general nitriding temperature is (450~470)℃, gas nitriding time is (5~20)h.
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