Micro-spot welding head, soldering chip,head chip,Dongguan Soucua Hardware Electronics Co., Ltd

Haba head directly depends on its production skills. Low-pressure casting is a relatively basic method and also a relatively economical method. Low pressure casting is to cast the melted metal in a mold form and harden; Back pressure casting is a more advanced casting method. It use a strong vacuum to suck metal into the mold, which is conducive to maintaining a constant temperature to remove impurities, there are no pores in the casting and the density is uniform, and the strength is high; The manufacturing process of high back pressure die casting(HCM) produces a nearly casting effect. The RX/RY(standard from 381 508mm) series aluminum wheels of the famous German manufacture BBS are made by the HCM method. Casting is better for making wheels. The skill of pressing an aluminum ingot into a wheel hub under the pressure of 6000t while it is hot. The strength of this wheel is 3 times that of the general aluminum wheel and it is also 20% lighter; Roll forging(also called die forging) is a kind of casting, in which the blank of a wheel hub is cast into shape during rolling. Roll-forged wheels can greatly reduce the thickness of the material while maintaining sufficient strength. This is a relatively high level of wheel production. The RSH series of BBS is roll-forged.

Following the deformation and wear of the electrode tip, the area of the spot welding head will increase, and the strength of the solder joint will be lost. In order to ensure the size of the nugget and the strength of the solder joint, the welding time and welding current can be mutually compensated within a certain range. In order to obtain a certain strength of the solder joints, high current and short time （strong premise, also called hard specification）can be used, or small current and long time（weak premise, also called soft specification）. The choice of hard specifications for spot welding heads or soft specification depends on the function, thickness of the metal and the power of the welding machine used. There is an upper limit for the current and time required to withstand the metal of incompatible function and thickness, and the duration shall prevail.