电阻焊接在两个电极之间的焊接器部件压制，并通过电流通过与工件表面的电流和邻近区域的电流产生电流产生的电阻热，以便形成金属，以形成金属- 绕线。
Spot welding, the workpiece is only limited to contact with the surface of the so-called "point" is welded together and form a flat spherical nugget. Spot welding can be divided into a single spot and spot welding. Multi-spot welding, the use of more than two pairs of electrodes, the formation of more than one nugget in the same processes. Seam welding similar spot. Seam welding, the workpiece in two rotating discoid electrode (roll plate) through to form a continuous weld around the lap bar solder joints.
投影焊接是现场的变型。在工件中预先碰撞。投影焊接，可以在关节中形成一个或多个块。对接焊接，工件端面触点在电阻加热和沿整个接触表面的压力之后焊接。
电阻焊接缺陷：
1) lack of reliable non-destructive testing, welding to check the quality to rely on technology-destructive testing of specimens and artifacts, as well as by a variety of monitoring techniques to ensure.
2）点，搭接接头的接缝焊接不仅提高了部件的重量，并且由于块的两个板之间的角度形成，导致接头的抗拉强度和疲劳强度。
3) power devices, a higher degree of mechanization and automation, so that the higher equipment costs, maintenance more difficult, and high-power single-phase AC welder is not conducive to the normal operation of the grid. Electrode wear as aerospace, electronics, automotive, household appliances, industrial development, resistance welding together more by the community's attention, at the same time, resistance welding quality also put forward higher requirements.
specification, Standard and identificationWelded steel pipe (steel pipe manufactured with a weld) is a tubular product made out of flat plates, known as skelp, that are formed, bent and prepared for welding.
