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What are the processing technology of the compression spring?
by：Yongqiang
2020-09-22
1, recrystallization annealing after compression spring coiling molding, must carry out recrystallization annealing treatment, make the spring geometry size stability, reduce the deformation of quenching.
Recrystallization annealing temperature is 550 ~ 650 ℃, the heat preservation 1 ~ 1.
Air cooling after 5 h.
A small amount can be done in salt bath furnace, large quantities of used continuous type resistance furnace control atmosphere.
2, quenching when quenching salt bath furnace heating, spring wire should be evenly strapped up, or the spring set of heating on the mandrel. When heated to ensure that the five spring surface oxidation and decarburization. Salt bath should be carefully DNA. Can also be used in controlled atmosphere box-type furnace heating, the heating temperature is 850 ℃ + 10 ℃, insulation 10 ~ 15 min, from quenching oil cooling.
3, tempering after quenching and tempering can be carried out twice. To rectify tempering, correct the tempering temperature should be lower than the final tempering temperature 20 ℃ or so commonly, insulation 10 ~ 15 min, from air cooling. After final temper, and then the spring size correction, spring, wrapped in tempering stereotypes fixture on tempering in the end. Tempering stereotypes fixture should guarantee the spring pitch and free length conform to requirements. Tempering temperature is 420 ℃ + 10 ℃, 30 ~ 35 min, heat preservation from water.
4, blasting treatment in order to improve the fatigue strength spring need to shot blasting process. The projectile diameter Φ 0. 3 to 0. 5mm。 Using compressed air jet, compressed air pressure to zero. 4 to 0. 5MPa; Centrifuge is shot, linear velocity of the projectile is 70 m/s. The treatment of the compression spring blasting can increase more than double service life.
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2, quenching when quenching salt bath furnace heating, spring wire should be evenly strapped up, or the spring set of heating on the mandrel. When heated to ensure that the five spring surface oxidation and decarburization. Salt bath should be carefully DNA. Can also be used in controlled atmosphere box-type furnace heating, the heating temperature is 850 ℃ + 10 ℃, insulation 10 ~ 15 min, from quenching oil cooling.
3, tempering after quenching and tempering can be carried out twice. To rectify tempering, correct the tempering temperature should be lower than the final tempering temperature 20 ℃ or so commonly, insulation 10 ~ 15 min, from air cooling. After final temper, and then the spring size correction, spring, wrapped in tempering stereotypes fixture on tempering in the end. Tempering stereotypes fixture should guarantee the spring pitch and free length conform to requirements. Tempering temperature is 420 ℃ + 10 ℃, 30 ~ 35 min, heat preservation from water.
4, blasting treatment in order to improve the fatigue strength spring need to shot blasting process. The projectile diameter Φ 0. 3 to 0. 5mm。 Using compressed air jet, compressed air pressure to zero. 4 to 0. 5MPa; Centrifuge is shot, linear velocity of the projectile is 70 m/s. The treatment of the compression spring blasting can increase more than double service life.
Everyone who has a leaf spring hardware wants it to look leaf spring hardware. However, in order to achieve that, it normally involves investing in a leaf spring hardware News. Dongguan Yongqiang spring hardware Co.,Ltd. can offer you the best solution.
Dongguan Yongqiang spring hardware Co.,Ltd. offers the best products, high-quality services and innovative technology.
Dongguan Yongqiang spring hardware Co.,Ltd. deems that we can drive consumer transactions using high-tech tools like artificial intelligence and cognitive data sets.
News are raising the stakes of social marketing, but they also ease the sales process by providing ways for leaf spring hardware to effectively interact with customers.
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