Oil and gas quenching vacuum furnace quenching big difference

Oil and gas quenching vacuum furnace quenching big difference

Vacuum furnace is refers to under the vacuum state of heating furnace, vacuum furnace is divided into a lot of kinds, have spirit oil quenching, quenching, annealing, tempering and other categories, including vacuum gas quenching furnace and vacuum oil quenching furnace is the most commonly used, although the two kinds of vacuum furnace name is similar, but the gap between the two are high, let's take a look at what are the differences between the two?
1. In the case of type furnace and power equal, oil quenching furnace to some wide adaptation of sex, poor gas quenching furnace to big diameter and the hardenability of steel narrow applicable.
2. In the specification of the furnace, the cost of gas quenching oil quenching, the reason is high because the nitrogen is bigger than the oil consumption, the cycle time is longer, the feed box and furnace components under the cold and heat exchange of the often more wear and tear.
3, with diffusion pump gas quenching furnace to do high speed steel, beryllium copper, stainless steel, titanium alloy higher-value products, and can be used in the vacuum tempering. The oil quenching furnace is not.
4, to the hardenability of good steel, gas quenching is better than the oil quenching of tissue, deformation and surface finish is better.