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本厂产品柴油机的精密零件,为了防止变形,要在摄氏零下六、七十度进行冰冷处理,来稳定金属机械性能。几年以来,因无零下温度计测量,虽在国外订货和在各地采购,但都未获解决;因此在进行零件冰冷处理时,只好凭经验估计。如果估计不准确,就使零件不能符合质量的要求,甚至报废。为了保证产品的质量和减少零件的报废,就进行了零下温度计的试制。
Our precision products diesel engine parts, in order to prevent deformation, to minus six degrees Celsius, seventy degrees for icy treatment, to stabilize the mechanical properties of the metal. Over the past few years, because there is no zero temperature thermometer measurement, although the order in foreign countries and procurement in all over, but have not been resolved; so in the cold parts processing, had to empirically estimated. If the estimation is inaccurate, the parts can not meet the quality requirements, or even scrapped. In order to ensure the quality of products and reduce scrap parts, the thermometer made a trial.