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1.问题的提出热镀锌锌液温度是热镀锌生产的关键工艺参数,它对锌层质量、锌耗都有很大影响。温度控制的准确度和稳定性也是镀锌生产的关键。在我们利用常规的热电偶测温时,影响测温的最大问题是电偶保护管很快受到锌液的溶蚀,造成电偶损坏而影响测量。电偶保护管溶蚀过程中,其溶蚀程度不易检查。在保护管蚀穿、锌液进入保护管内时,电偶直接受锌液影响,热电势波动很大,严重影响测量。同时,热电偶丝很快受到溶蚀而损坏。如不及时发觉,及时更换,就会造成质量事故。经常更换热电偶,维修人员要在几百度温度下检修,劳动强度很大,造成人力物力的浪费。为了寻求耐用的保护
1. The issue put forward Hot dip galvanizing temperature of zinc hot dip galvanizing production is the key process parameters, which have a significant impact on the quality of zinc, zinc consumption. The accuracy and stability of temperature control is also the key to galvanizing production. When we use the conventional thermocouple temperature measurement, the biggest problem affecting the temperature measurement is the galvanic corrosion protection tube is quickly corroded by the zinc solution, resulting in damage to the galvanic couple and affect the measurement. Galvanic protective tube corrosion process, the degree of corrosion is not easy to check. In the protection of pipe erosion, zinc liquid into the protection tube, the galvanic couple directly affected by zinc liquid, thermoelectric power fluctuations, seriously affecting the measurement. At the same time, the thermocouple wire is quickly corroded and damaged. If not found in time, replaced in time, it will result in quality accidents. Often replace the thermocouple, maintenance personnel to overhaul at several hundred degrees temperature, labor-intensive, resulting in a waste of manpower and resources. In search of durable protection