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What is the cause of pitting on the surface of the hydraulic piston rod?
Oct 27, 2018

Pitting refers to small pits formed on the surface of the hydraulic piston rod during electroplating and processing. Although there are coatings on the surface, the defects cannot be flattened. Why is there such a situation? If the piston rod product itself is used as a raw material or for pre-plating treatment, there are small pits or small defects on the substrate.

 

Before the hydraulic piston rod is chrome-plated, it needs to be leveled. If the leveling effect is not good, in the case of a large current density, nodules may occur, and the nodules are left behind after polishing. Moreover, the components after deplating are directly plated, which is prone to pitting.

 

In addition, if there is a slight rust on the surface of the hydraulic piston rod substrate, when the weak corrosion is performed, the rust spots are corroded to produce small pits, and small spots are formed in these places during electroplating. In addition, due to improper grinding force or oil stone selection, the oil stone is crushed during the grinding process, and the raw material is squeezed into small pits to form pitting on the surface of the hydraulic piston rod.http://www.xhychromerod.com/