Scars caused when assembling hydraulic cylinder：
① When assembling, foreign matter is mixed to cause scars. Before the total assembly of the hydraulic cylinder, all parts must be fully deburred and cleaned. When the parts are installed with burrs or dirt, foreign matter is easy to be embedded in the hydraulic cylinder due to the "unusual strength" and the weight of the parts The surface of the cylinder wall causes scars.
② Scars occurred in the parts of the hydraulic cylinder. When the hydraulic cylinder is installed, the piston and hydraulic cylinder cover are of large mass, size, and inertia. Even if the lifting equipment is used for auxiliary installation, the clearance is small due to the regulations, no matter what. It will be hard to put in. Therefore, when the end of the piston or the hydraulic cylinder cover boss hits the inner surface of the hydraulic cylinder wall, it is very easy to cause scars. The way to solve this problem: For small products with large quantities and large batches, special assembly guide tools are used when installing; for heavy, thick, large, large and medium hydraulic cylinders, only careful and careful operation can try to avoid them.
③The scars caused by the contact of the measuring instrument are usually used to measure the inner diameter of the hydraulic cylinder with an inner diameter dial indicator. The measuring contact is inserted into the wall of the hole in the hydraulic cylinder while rubbing, and the measuring contact is mostly made of high hardness and wear-resistant hard alloy. . Generally speaking, the thin and elongated scratches caused by the measurement are slight and do not affect the running accuracy. However, if the measuring rod head size is adjusted improperly, the measuring contact is hardly embedded, which will cause more severe 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 that only has holes in the measuring position and stick it on the inner surface of the hydraulic cylinder wall, that is, the above-mentioned shape will not be generated. mark. Slight scratches caused by measurement can generally be wiped off with the reverse side of an old emery cloth or horse dung paper.
