Piston rod partial chrome plating device

Abstract

The invention discloses a piston rod partial chrome plating device. The piston rod partial chrome plating device comprises a piston rod rod-part chrome plating assembly and a big end chrome plating protection assembly, wherein the piston rod rod-part chrome plating assembly comprises a first hook (1), a first bushing (2), a gasket (10), a first plug (4) and a plug cover (5), and the big end chromeplating protection assembly comprises a second hook (11), a second bushing (3), a third bushing (6) , a rubber ring (7), a washer (8) and a second plug (9). According to the piston rod partial chromeplating device, a rod part and a big end of a piston rod are electroplated separately, the uniformity of chrome layers is easy to control, and the problems that the thickness of a chrome layer of therod part is thin and the thickness of a chrome layer of the big end is too thick are solved. When the big end is chrome plated, a groove is protected by the rubber ring, and the problem that a chromium layer remains in the groove caused by leakage of a solution is avoided. The piston rod partial chrome plating device is very easy to install and disassemble, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to a device for partially chrome-plating piston rod parts, which belongs to the technical field of metal material surface treatment. Background technique [0002] The piston rod is a moving part with frequent movements, and has high technical requirements for machining accuracy, surface wear resistance, surface roughness, and high temperature resistance. The chrome-plated layer has high hardness, which can effectively improve the wear resistance and corrosion resistance of the piston rod, so as to improve the service life of the parts. [0003] Such as figure 1 As shown, the piston rod requires chrome plating on the rod and the big end, and the coating thickness is required to be 4 μm to 6 μm. The tolerance range is small, the machining accuracy is high, and the processing is difficult; The location is prone to current concentration, causing the deposition rate of the chromium layer at the large end of the piston rod to be great...

AI Technical Summary

Problems solved by technology

[0003] like figure 1 As shown, the piston rod requires chrome plating on the rod and the big end, and the coating thickness is required to be 4 μm to 6 μm. The tolerance range is small, the machining accuracy is high, and the processing is difficult; The location is prone to current concentration, causing the chromium layer deposition rate at the large end of the piston rod to be greater than the chromium layer deposition rate at the rod, making it difficult to obtain a uniform coating

The chrome plating of the piston rod has always had quality problems such as peeling, leakage, uneven thickness of the coating, and local chromium tumors.

[0004] In view of the above situation, it is urgent to design a piston rod chrome plating device to solve the quality problem of the piston rod chrome layer

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