Quality control of spot welding and structure of commutator spot welding machine

Commutator spot welding machine is a relatively sophisticated kind of welding machinery. Spot welding belongs to resistance welding in welding. It is also called seam welding. It is a process that requires relatively high control. The commutator is also called a commutator, and is also used in the finishing machine. There is a commutator finishing machine that has a relatively strong endurance in the finishing machine. It is actually a way to improve the continuous operation of the motor. Of equipment. The control of spot welding is the key to the commutator spot welding machine. Here is an introduction to the quality control of spot welding.

    Spot welding and seam welding are characterized by high current and short time, and their temperature field distribution is relatively steep. The heat generated by the resistance heating of the welding zone must ensure that the bonding surface between the plates is melted, and the temperature of the electrode contact surface is not allowed to be too high. Insufficient heating will cause incomplete penetration or sticky welding; too strong heating will cause defects such as flying, sticking electrodes, deep indentation, overheating and overburning. Therefore, a specific and precise temperature field is required for welding, which is completely different from fusion welding. The heating degree of the solder joint is proportional to the welding current, the resistance of the welding area and the welding time, and the formation and cooling of the nugget is always completed under the action of the electrode pressure, that is, the electrode pressure and the electrode contact area affect the welding heating specification. At the same time, the quality of resistance welding is affected by changes in external factors such as network voltage and air pressure, and there is a certain degree of fluctuation. This reduces the reliability of spot welding and seam welding structures. Therefore, quality control occupies a very prominent position in the whole process of spot welding and seam welding.