表面热处理一般固溶处理的加热温度在780-820℃之间,对用作弹性组件的材料,采用760~780℃,主要是防止晶粒粗大影响强度。固溶处理炉温均匀度应严格控制在±5℃。保温时间一般可按1小时/25mm计算,铍青铜在空气或氧化性气氛中进行固溶加热处理时,表面会形成氧化膜。虽然对时效强化后的力学性能影响不大,但会影响其冷加工时工模具的使用寿命。 为避免氧化应在真空炉或氨分解、惰性气体、还原性气氛中加热,从而获得光亮的表面热处理效果。此外,还要注意尽量缩短转移时间,否则会影响时效后的热处理效果。
碳钢的光亮热处理主要有易切削钢等低碳钢的光亮退火处理以及光亮退磁。
Carbon steel bright heat treatment are mainly free-cutting steel and other low-carbon steel bright annealing, as well as bright demagnetization.
不锈钢的光亮热处理有马氏体不锈钢(如400系列)光亮淬火、奥氏体不锈钢(如300系列)光亮退火。
Bright heat treatment of stainless steel are martensitic stainless steel (such as the 400 series), bright quenching, austenitic stainless steel (such as the 300 series), bright annealed.
经冷轧后实施热处理、酸洗或其它相当处理,再以冷轧加工使表面为适当之光亮程度者。
Those finish, after cold rolling, by treatment, by heat packing or other equivalent treatment and lastly by cold rolling to give an appropriate luster.
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