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铠装热电偶、铠装热电阻是应用十分广泛的测温传感器,但小直径(Φ2～Φ3mm)铠装热电偶和热电阻至今在生产上仍比较困难,其原因是小直径保护管的焊接问题没有过关。 有些生产厂曾从国外引进全位置焊机来焊接这类小直径薄壁管的对接接头,效果不理想。现在有个别厂采用激光焊,但生产成本很高。为解决Φ3mm铠装热电偶和Φ3mm铠装热电阻保护管的对接焊问题,我
Armored thermocouple, armored thermal resistance is a very wide range of temperature sensors, but small diameter (Φ2 ~ Φ3mm) armored thermocouple and thermal resistance so far in the production is still more difficult, because the small diameter of the protection of the welding tube The problem has not been cleared Some manufacturers have introduced from abroad all-position welding machine to weld such small-diameter thin-walled butt joints, the effect is not satisfactory. Now there are individual factories using laser welding, but the high cost of production. In order to solve the butt welding problem of Φ3mm armored thermocouple and Φ3mm armored thermal resistance protective tube, I