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Hardness and wear resistance of chrome-plated piston rod chrome plating
Oct 08, 2018

The chrome plating of the chrome-plated piston rod has a high hardness, and the hardness of the chrome-plated piston rod can vary within a wide range (HV400 MPa to 1200 MPa) due to differences in plating composition and process conditions. The chrome-plated layer of the chrome-plated piston rod has good heat resistance, and the gloss and hardness are not significantly changed when heated below 500 °C.

 

In addition to the higher hardness, the chrome plating of the chrome-plated piston rod has a small coefficient of friction, which means that it has excellent wear resistance. Moreover, the chrome plating layer has good chemical stability and does not function in alkali, sulfide, nitric acid and most organic acids. Since the chrome plating layer has the above-mentioned excellent properties, the life of the workpiece can be greatly extended. Therefore, the chrome plating process of the piston rod has been widely used until now.

 

However, in the chrome plating process of chrome-plated piston rods, the surface quality of the products will be affected by the quality of the previous processes, such as roughing, grinding and so on. The knife marks of the fine grinding wheel, the pits of the plated pinholes, the residual marks of the rough grinding wheel, the fine knife flower, etc. will also become the unqualified factors of the final plating surface, in which the grinding wheel marks and the plated pinholes are finely ground. These two situations are the most common. In order to reduce the surface defects of the plate after plating, it is necessary to take certain measures to remedy after plating.https://www.xhychromerod.com/