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微型轴承及机械手表等精密零件要求热处理后表面无氧化、脱碳,色泽光亮。采用真空炉及滴控式可控气氛多用炉已可成功解决手表零件及微型轴承零件的光亮淬火问题。但若回火后不能保证零件表面光亮,则同样不能满足质量要求。对于轴承内、外圈,由于回火温度较低,可采用油浴回火,不存在表面氧化问题。而3cr13钢制保持架及20AP、T10A钢制手表零件,根据不同
Micro-bearings and mechanical watches and other precision parts require heat-treated surface without oxidation, decarburization, bright color. The use of vacuum furnace and drip controllable atmosphere multi-purpose furnace has been successfully resolved the bright parts of the watch parts and miniature bearing quenching problems. However, if the surface can not be guaranteed after tempering bright, the same can not meet the quality requirements. For the bearing, the outer ring, due to the tempering temperature is low, the oil bath can be tempered, there is no surface oxidation problems. The 3cr13 steel cage and 20AP, T10A steel watch parts, according to different