Solvent distillation gas corrosion coating
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Screw vacuum pump, with three condensation collection tanks before the pump. Both the screw and the pump chamber are coated with anti-corrosion coatings; however, the coating on the screw keeps getting corroded. Any experienced experts out there who can offer some advice?
How do you apply this coating? Spraying? Is it still an ionization method? Since it is a coating for moving parts, simply spraying it is likely not to yield very good results.....
Well, there is acidity in the solvent; due to the movement of the screw, the coating comes off and causes corrosion
The first type is wear and tear, not corrosion; corrosion comes second. And this is a normal phenomenon that’s inevitable. If you’re worried about corrosion, use stainless steel – it’s that simple
Let me tell you, those methods involving spraying and penetration are completely unreliable. Choose a corrosion-resistant metal based on your specific operating conditions. I guess the spraying method you’re using isn’t cheap either; make up your mind to switch to another material.
Based on the movement of the screw, it is not advisable to use a polymer coating. Since the screw can squeeze and wear the coating during operation, there is currently no coating suitable for use under such conditions; therefore, upgrading to a metal material is being considered.