| Vacuum Washing | Vacuum pump is used at ultrasonic cleaning process and vacuum drying process. |
|---|---|
| Vacuum Heat Treatment Furnace | In vacuum heat treatment method, product is heated then cooled with gas or oil in a vacuum furnace. Steel material quenched in atmosphere gets scale on it because of the reaction of oxygen and iron. On the other hand, vacuum heat treatment prevents oxidization and decarburization to provide luster on the material surface. |
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