Auto engine timing chains are mostly used in the lifting and handling of goods, so many industries need Auto engine timing chains, due to the particularity of the material and structural design used. Auto engine timing chains have the characteristics of wear resistance, high temperature resistance, etc., and also show the advantages of low ductility and no elongation after stress.

In the process of manufacturing Auto engine timing chains, the welding process is bound to be used, and the most used in many welding technologies is flash butt welding. It is the use of butt welding machine to make the two ends of the metal contact, through the low voltage strong current, when the metal is heated to a certain temperature and becomes soft, the axial pressure top forging is carried out, so as to form the butt welding joint.

Flash surfacing welding of Auto engine timing chains can be divided into three different types, respectively, flash-preheat flash welding, preheat flash butt welding and continuous flash butt welding, they have different operating processes and characteristics, The finished Auto engine timing chains will also be slightly different.

The so-called flash-preheat flash welding is to add a flash process before the preheat flash welding of Auto engine timing chains, in order to make the uneven steel bar end face burn flat and preheat evenly. When welding, first continuous flash welding, and then flash welding with preheat.

The preheating flash butt welding seems to be the same, but in essence, a preheating process is added before the continuous flash welding of Auto engine timing chains to expand the welding heat affected zone. When the steel bar reaches the preheating temperature and enters the flash stage, the top forging is formed.

When continuous flash butt welding is used to weld Auto engine timing chains, it is necessary to close a circuit first to make the two steel bars slightly contact the end face. At the same time, metal particles are ejected from the gap between the end faces; Then slowly move the steel bar so that the two ends still maintain slight contact, forming a connecting flash.

When the flash reaches a predetermined length and the end of the steel bar is heated to nearly melting point, the overforging is carried out rapidly at a certain pressure. Generally, it is first charged upforging, and then the electric upforging to a certain length, so that the welded joint on the Auto engine timing chains is processed.

Auto engine timing chains https://www.qj-chain.com/Auto-engine-timing-chains.html