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How to solve the scars caused when assembling the hydraulic cylinder barrel

Scars caused when assembling the hydraulic cylinder barrel:
1. Scars caused by foreign matter mixed in during assembly. Before the final assembly of the hydraulic cylinder, parts should be removed from burrs and cleaned. When installing parts with burrs or dirt on them, foreign matter can easily embed into the surface of the cylinder wall due to "unnatural force" and the weight of the parts, causing scars.
2. Scars that occur in the installed parts. When installing the hydraulic cylinder barrel, parts such as the piston and cylinder head have large mass, size and inertia. Even if they are installed with lifting equipment, the required fit clearance is small and they will be thrown in anyway. Therefore, when the end of the piston or the cylinder head boss hits the inner surface of the cylinder wall, it is easy to cause scars. Methods to solve this problem: For small products with large quantities and large batches, use assembly guide tools during installation; for large and medium-sized hydraulic cylinders that are heavy, thick, and large, only careful and careful operation can solve the problem.
3. Scars caused by measuring instrument contacts. When the inner diameter of the cylinder is usually measured using an inner diameter micrometer, the measuring contacts are inserted into the inner hole wall of the hydraulic cylinder while rubbing. Most of the measuring contacts are made of high-hardness carbide. Generally, slender scratches with a small depth caused during measurement are minor and do not affect the operation accuracy. However, if the size of the measuring rod head is improperly adjusted and the measuring contact is hard-embedded, it will cause more serious scratches. The solution to this problem is to first measure the length of the adjusted measuring head. In addition, use a piece of paper tape with holes only at the measurement position and stick it on the inner surface of the cylinder wall, so that the above-mentioned shape scratches will not occur. Slight scratches caused by measurement can generally be wiped off with the back side of an old emery cloth.

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