点焊,学名电阻焊,其特征是电极间的两基体金属通过低压波峰大电流发热,在热塑状态下加压,使之成为紧密的结合.所以,实质上是热压焊. Spot welding, scientific name resistance welding, which is characterized by the two base metals between the electrodes through the low-voltage wave high-current heating in the thermoplastic state of pressure, so that it becomes a tight combination. So, in essence, heat pressure welding.