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铁-铬-铝电炉丝在使用过程中,会发生缩圈、下垂等变形,因此使用一段时间就要给电炉丝整形。铁-铬-铝合金在室温下很脆,过去是使用氧-乙炔焰将电炉丝烧红后整形,很不方便。我们受电弧焊因电流较小不易起弧而焊条烧红这一现象的启发,改用电接触加热法给电炉丝整形,效果很好。根据电炉丝截面积,选取同等截面的电焊条所需电流流,再适当减少10
Iron - chromium - aluminum electric wire in the course of use, there will be shrinkage, sagging and other deformation, it is necessary to use for some time to shape the electric wire. Iron - chrome - aluminum alloy is very brittle at room temperature, the past is the use of oxygen - acetylene flame burning red electric wire plastic, very inconvenient. We are affected by the phenomenon of arc welding due to the current is not easy to arcing and red hot rod, inspired by the use of electrical contact heating method to wire electric furnace shaping, the effect is very good. According to the electric wire cross-sectional area, select the same section of the electrode current flow required, and then reduce the appropriate 10