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How to deal with corrosion on the valve sealing surface?

2017-03-21View Original

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The unit has a reciprocating hydrogen chloride compressor, and the sealing surfaces of the valve covers in the middle section and the cylinder head have corroded. Do any of you have any methods to repair this? Online repair is the best
Reply #22017-03-22
Are your gaskets made of aluminum or silicone rubber? Looking at your photo, first of all, there is no recess on the cover for a pad; it seems that an aluminum pad isn’t being used ; I originally wanted to suggest trying a trapezoidal pad, but the clearance between the pressure cylinder and the air valve hole seemed too large. Regardless of the sealing method used, it’s best to repair the sealing surface by grinding and cleaning it thoroughly, followed by repairing it with a metal patching compound.
Reply #32017-03-22
Thank you. The metal repair agent seems to be sensitive to acids; it fell off again after some time
Reply #42017-03-23
First, grind it clean; it’s possible that damage to the sealing surface won’t be detected if it’s not properly ground. Repair can be done using metal repair compounds or weld repair methods
Reply #52022-11-30
Yes, it is possible to use materials for scraping and filling in order to carry out treatment and restoration

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