Oxygen-Free Annealing Iron Wire is a new product.

Vacuum oxygen-free flame-fading iron wire can be from 0.7mm to 5mm.

Bright heat treatment does not have to be vacuum furnace, heating in a protective atmosphere, that is, we often say the continuous bright quenching furnace, protective gas for pure hydrogen or nitrogen-hydrogen mixture, can also make ammonia decomposition gas. There is another quenching medium in the bright quenching can also be quenched. The vacuum heat treatment refers to the treatment in the vacuum environment, but the vacuum environment of a lot of treatment: quenching, tempering, annealing, and some sintering, brazing are included. Note that it may not be bright, but it can be done on demand. When people say vacuum, they don't mean the specific degree of vacuum. Materials behave differently at different vacuum degrees and temperatures. When the vacuum is low, and the temperature is low, they are oxidizing, at high temperature and high vacuum, it is also reductive. Even if the vacuum heat treatment in the same degree of vacuum, some materials have oxidation, some materials do not oxidation, performance is some out of the bright, some not bright. Vacuum heating is only a condition, if the vacuum gas quenching furnace, cooling, gas impure, such as vacuum oil quenching furnace oil water or degassing not completely will cause the workpiece not bright, inert gases such as nitrogen and argon also differ. Therefore, in the vacuum heat treatment, with the right process will be bright.