高温盐浴炉测温与控温,是温度测量上的一个薄弱环节。过去,我们曾采用过光电比色高温计、全辐射高温计、光学高温计测量,但这些仪表均属于非接触式仪表,受外界影响较大,带来很大的附加误差。另外由于烟雾及工件遮挡镜头,造成炉温升高、产品过烧而报废。近年来,由于采用了新钢种501代替W180r4V钢种,刃具材料的改变,使淬火温度允许误差变得小了。如W18Cr4V淬火温度为1275～1285℃,允许 High-temperature salt bath temperature and temperature control, temperature measurement is a weak link. In the past, we have used photoelectric colorimetric pyrometer, full radiation pyrometer, optical pyrometer measurements, but these instruments are non-contact instruments, affected by the outside world, resulting in a large additional error. In addition due to smoke and artifacts blocking the lens, resulting in increased temperature, over-burning products and scrapped. In recent years, due to the use of a new type of steel 501 instead of W180r4V steel, cutting tool material changes, the quenching temperature allows the error becomes smaller. Such as W18Cr4V quenching temperature of 1275 ~ 1285 ℃, allowed