在車身制造中被大量應用的電阻點焊，現(xiàn)在在修理中也逐步開始應用了。
In automobile body manufacturing is a large number of applications of resistance spot welding, now also gradually began to apply in the repair.
隨著汽車材料的發(fā)展，有些超高強度鋼不能采用氣體保護焊焊接。氣體保護焊焊接的熱量會破壞超高強度鋼的內部結構，使其強度降低。所以只能采用電阻點焊來修理。
With the development of automotive materials, some of the ultra-high strength steel gas shielded welding welding will not be used. Gas shielded welding welding heat will damage the internal structure of ultra-high strength steel, reduce its strength. So can only use the resistance spot welding to repair it.
電阻點焊還有一個最大的優(yōu)點是受操作者的影響比較小，只要調整好焊接壓力、焊接電流和焊接時間后，每個焊點的焊接質量基本不會發(fā)生大的偏差，焊接質量比較穩(wěn)定。
螺柱焊機
Resistance spot welding and one of the biggest advantage is less affected by the operator, as long as adjust welding pressure, welding current and welding time, each solder welding quality of basic won't happen big deviation, welding quality is stable.
在電阻點焊的修理作業(yè)中，應該注意焊接質量的控制。一般的電阻點焊機的焊接電流能夠達到6000A左右，對于車身上一般的板件都可以進行焊接。
In the resistance spot welding repair work, should pay attention to the welding quality control. The average resistance spot welder welding current can reach 6000 a, for general car body panel welding can be performed.
但是對于一些超高強度鋼，焊接電流可能要達到9000A以上，否則焊點不能保證足夠的強度。因為從外觀看不出來板件是否焊好，在做電阻點焊之前，要找相同的材料進行試焊。
But for some of the ultra-high strength steel, welding current is likely to reach more than 9000 a, or the strength of the solder joint does not guarantee enough. Because not to come out whether panel welding good when viewed from the outside, before making a resistance spot welding, try to find the same material for welding.
在試焊時要不斷調整焊接的壓力、電流和時間三個參數(shù)，然后進行破壞性試驗來驗證是否達到焊接強度。
When test weld to constantly adjust the welding pressure, current and time three parameters, and then conduct destructive test to verify whether the welding strength.
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