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延长盐浴炉热电偶使用寿命的两种方法 盐浴炉使用的直角热电偶,由于长期接触盐液,致使热电偶工作端头极易受腐蚀而穿孔,这不仅影响了生产进度,而且热电偶的不断损坏在经济上也造成不小损失。我们在生产中总结了两条延长盐浴炉热电偶使用寿命的方法。 (1)安装保护套 具体方法是选一个耐热钢管(1Cr18Ni9Ti),其内径略大于热电偶工作端的外径约2～3mm,长度与热电偶工作端长度相当,一端焊死,不得有虚焊,另一端外径钻一小孔,将此管套在热电偶工作端外部,用一细铁丝将其与热电偶直角部位连接牢固,热电偶端部与套管端部要有一定的间隙(见图)。这样热电偶在使用时套管与盐
Two ways to extend the service life of the salt bath furnace thermocouple The right-angle thermocouple used in the salt bath furnace, due to the long-term contact with salt solution, makes the working end of the thermocouple extremely vulnerable to corrosion and perforation, which not only affects the production progress, but also the thermocouple The constant damage caused no small financial loss. We have summarized two ways to extend the life of a thermocouple in a salt bath furnace in production. (1) The specific method of installing the protective sleeve is to choose a heat-resistant steel tube (1Cr18Ni9Ti), the inner diameter slightly larger than the outer diameter of the working end of the thermocouple about 2 ~ 3mm, length and length of the thermocouple work end considerable welding end, , The other end of the outer diameter of drilling a small hole, the tube outside the working end of the thermocouple, a thin wire with a thermocouple right-angle part of the firm connection, thermocouple end and the casing end to have a certain gap See figure). Such thermocouple casing and salt in use