多年来,我厂中温盐浴炉的盐浴沿用传统配比,即50%NahCl+50%BaCl_2,效果一直较好。只是这种盐浴的毒性较大,启动时间较长,炉温及工件硬度的均匀性也较差。但是,近来发现淬火后的工件不同程度地出现了黑斑,盐浴中也发现了悬浊物。为了解决上述问题,我们参考了热处理手册, Over the years, our factory salt bath salt bath followed the traditional ratio, that is, 50% NahCl + 50% BaCl_2, the effect has been better. Only this toxicity of salt bath is larger, start-up time is longer, the uniformity of the furnace temperature and the workpiece hardness is also poor. However, it has recently been found that the hardened workpiece appears to varying degrees of dark spots, also found in the salt bath suspended solids. In order to solve the above problems, we refer to the heat treatment manual,