The use and maintenance skills of hydraulic cylinder

The cylinder is the most important part of the construction machinery, the traditional processing method is: broaching cylinder body - boring cylinder body - grinding cylinder block. Rolling method is: broaching cylinder - boring cylinder - rolling cylinder, the process is the 3 part, but the time contrast: grinding cylinder 1 meters, probably in 1-2 days, rolling cylinder 1 meters, probably in 10-30 minutes.

In contrast: grinder or article mill (tens of thousands of millions --), rolling knife (1 thousand - tens of thousands). After rolling, the surface roughness of the hole is from Ra3.2 to 6.3&micro before the roll; the M decreases from Ra0.4 to 0.8μ m, the surface hardness of the hole increases by about 30%, and the inner surface fatigue strength of the cylinder increases by 25%.

The service life of the cylinder can be increased by 2~3 times only if the cylinder is taken into account, and the grinding and rolling process can be improved by about 3 times compared with the grinding process. The above data show that the rolling process is efficient, and can greatly improve the surface quality of the cylinder.

After rolling the cylinder, there is no sharp small blade on the surface, and the long time friction will not damage the sealing ring or seal, which is particularly important in the hydraulic industry.

Wonderful recommendation:

In overseas markets, the Egyptian R.E.F cable-stayed bridge ouweimu

Zhong Hua Zhong Ke: putting environmental protection concept into practice

Infineon improves truck safety and operational efficiency, intelligent control