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冷凝管“含碳氧化膜”的产生同管材挤压时润滑剂添加量,中间酸洗清洁程度,退火工艺条件等各个加工工序有关,其中管材挤压时的润滑剂是影响碳含量的主要因素。中间酸洗和氧化退火能较大幅度地降低氧化膜中碳的含量。铜管脱脂,氮气保护退火对降低氧化膜中碳的含量无明显效果。铜管表面氧化膜中的碳和氧是同时存在的,因此用“含碳氧化膜”代替“碳膜”名称更为确切。
Condenser “carbon-containing oxide film,” the production of the same pipe extrusion lubricant additives, intermediate pickling cleanliness, annealing process conditions and other processing procedures, including pipe extrusion lubricant is the main factor affecting the carbon content . Intermediate pickling and oxidation annealing can significantly reduce the carbon content of the oxide film. Copper degreasing, nitrogen protection annealing to reduce the oxide film in the carbon content no significant effect. Carbon and oxygen in the oxide film on the surface of the copper pipe coexist, so it is more accurate to replace the “carbon film” with “carbon-containing oxide film”.