高温盐浴炉测温热电偶的阴极保护

The Cathodic Protection of Thermocouple Used in High Temperature Salt Bath Furnace

本文针对高温盐浴炉热电偶直接测温的腐蚀问题，进行了阴极保护试验，分析了腐蚀速度随保护电流密度的变化关系。在此基础上，确定了最佳保护电流密度，使保护管的使用寿命提高了８～１０倍，从而较好地解决了金属保护管的腐蚀问题。

Aiming at the corrosion problem of thermocouple used in high temperature salt bath furnace,this paper has done an experiment on the cathodic protection. The relation of corrosion velocity and electric current density is analyzed. On the above basis,the optimal electric current density is determined. The service life of protector jacket is prolonged by 8 to 10 times,thus the corrosion peoblem of metalic protector jacket has been resolved.