How to solve the joint surface with large deformation of the cylinder or serious air leakage?

The method of grinding and scraping the bonding surface can be used. If the joint surface of the upper cylinder is deformed within 0.05mm, the joint surface of the upper cylinder shall be the reference surface, and the joint surface of the lower cylinder shall be coated with red lead or embossed blue paper, and the lower cylinder shall be scraped according to the traces. If the joint surface of the upper cylinder deforms greatly, apply red lead to the upper cylinder, grind out the traces with a large flat ruler, and grind the upper cylinder flat. Or take the mechanical processing method to level the joint surface of the upper cylinder, and then scrape the joint surface of the lower cylinder based on the upper cylinder.

There are generally two methods for grinding and scraping the joint surface of the cylinder:

(1) It is a bolt that does not tighten the joint surface. Use a jack to slightly push the upper cylinder back and forth, and scrape it according to the coloring of the red lead on the joint surface of the lower cylinder. This method is suitable for high pressure cylinders with strong structural rigidity.

(2) It is the bolt of the tight joint surface. According to the tightness of the joint surface checked by the feeler gauge, the value and the traces are measured, and the joint surface is repaired. This method can eliminate the influence of the vertical arc of the cylinder on the clearance.