Correction of the distribution surface of the hydraulic pump and the cylinder block: The distribution plate has two methods: plane distribution and spherical distribution. For the friction pair of the spherical distribution surface, when the scratches on the distribution surface of the cylinder body are relatively shallow,hydraulic pump the grinding method is used to correct; when the grooves on the distribution surface of the cylinder body are deep,hydraulic pump the "surface engineering" method should be used to fill in the grooves before grinding. Do not grind blindly to reduce the thinning of the copper layer or the leakage of oil out of the steel base. The friction pair of the plane distribution method can grind on a path with relatively high accuracy.
Before the cylinder and hydraulic pump are ground,hydraulic pump the total thickness specification and the specifications that should be ground should be measured first, and then compensated to the adjustment pad. When the grinding volume of the valve plate is large, it should be heat treated from the beginning after grinding to obtain the hardness of the hardened layer. Hardness specification of plunger pump components Plunger rod hardware hs84 plunger rod ball head hardness>hs90 swash plate surface hardness>hs90 valve plate hardness>hs90 After the cylinder body and valve plate are corrected, the following methods can be used to check the leakage of the cooperation surface. That is, apply petroleum jelly oil on the valve plate surface to block the oil drain, apply the oil,hydraulic pump and place the valve plate flat on the path or flat glass, then put the cylinder block on the valve plate and write diesel oil in the cylinder hole, with intervals Oil injection, that is, one hole is filled with oil, and one hole is not filled with oil. If the diesel oil in the plunger hole is not leaked and connected for more than 4 hours, it indicates that the cylinder block and the valve plate are qualified. 4 Conclusion
The service life of the hydraulic pump is related to the usual protection,hydraulic pump the quantity and quality of the hydraulic oil, and the cleanliness of the oil. Reducing the particles in the oil to cause wear on the friction pair of the plunger pump is also a way to extend the life of the plunger pump. In repairing parts,hydraulic pump you should try to use the original manufacturer's production. These are sometimes more expensive than other copies of the quotation, but the quality and stability are better. Assuming the purchase of cheap copies,hydraulic pump it seems to save costs in the short term, but the result is If it is dangerous, it may also pose a great hazard to the use of the plunger pump.