Heat treatment vacuum furnace
In the use of heat treatment vacuum furnace for processing, the workpiece into the vacuum furnace, need to be cleaned, this step is easy to occur in two cases:
1, the workpiece is not clean, the surface residue of a large number of anti-rust oil and water. 2, anti-rust oil on the workpiece basically clean, but there is still a lot of water. After washing directly into the preheating area, before cleaning ordinary tap water.
The first case, if the workpiece surface grease, the first appearance of the workpiece is not very good, followed by carburizing the workpiece when the oil sintered on the surface, it will block the infiltration of carbon atoms, there is the last is not conducive to clean up shot blasting.
The second case does not have any effect on the workpiece, can only increase the pre-oxidation furnace or preheating area burden. It is better to dry or dry before entering a vacuum furnace.
So after everyone in the use of heat treatment vacuum furnace vacuum heat treatment, the workpiece into the vacuum before the furnace must pay attention to do a good job cleaning, so as to avoid the product to bring bad results.