When an electric heating method is used for heating, thermal couple and heating coil should be installed closest to the bevel while should not hinder the access of welder to the joint.
采用电加热法加热时，需注意热电偶及加热圈的安装要尽可能靠近坡口，但不得妨碍焊工接近接头。
The paper introduces a coating with high temperature resistance and insulating property for surface insulation process of electric heater coil of heating coil in automobile cigar lighter.
介绍一种能耐高温和绝缘的涂料及应用于汽车点烟器发热线圈电热丝表面绝缘处理工艺。
Medium temperature box adopts enclosed fire pot. The spiral heating component made by electric heated alloy wire coil all around of furnace pot. It has functions of evenly loss heat and long use life.
中温箱式采用封闭型炉膛，以电热合金丝为发热元件制成螺旋形后盘绕于炉膛四壁之中，散热时炉温均匀，延长了使用寿命。
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