AS-B206 customized metal bellow mechanical seal

This type seal is customized welded metal bellow mechanical seal

Background Knowledge：

The third step of production processes of welded metal bellows：welding 

Welding of bellows is precision welding, so there must be a complete air conditioning and air filter system in the operating room to ensure a constant temperature, constant humidity, and dust-free environment.Welding of bellows does not require welding rods, but fusion welding carried out in a controlled environment (working gas is Ar, shielding gas is Ar+N2) to avoid welding slag at the weld seam and affect the inherent characteristics of the bellows.

In order not to produce surface stress during fusion, the needed part of the metal bellows should be welded into a semi-spherical shape.Thickness of welding mushroom of a single-layer wave plate is usually 2.2-3 times that of the wave plate. As for double-layer ones，4-5 times.

Distances between waves must be uniform and shape of the mushrooms should be symmetrical. One purpose of using spacers is to prevent heat generated during welding from being transferred to other parts of wave plates of welded metal bellows. The welding speed is 1-1.2m/mim.