Tooling for simultaneously electroplating inner and outer surfaces of hydraulic oil cylinder and use method

Abstract

The invention discloses a use method of a tooling for simultaneously electroplating the inner and outer surfaces of a hydraulic oil cylinder. The use method comprises the following steps: first, a conducting column is put in the cylinder body of the hydraulic oil cylinder, and a bolt arranged on the lower end surface of the conducting column penetrates through a valve hole formed in the cylinder bottom of the hydraulic oil cylinder; then, an external thread ring sleeve is connected with an internal thread formed on the cylinder mouth of the hydraulic oil cylinder, and an insulating sleeve is connected onto the bolt; and finally, a lifting hook is hung on a cathode bar of an electroplating bath, the cylinder body of the hydraulic oil cylinder is placed in the electroplating bath, and the conducting column is connected with the anode of the electroplating bath through a lead wire. The use method disclosed by the invention has the advantages that a conventional process for electroplating a hydraulic oil cylinder with a copper-tin alloy is changed, so that the hydraulic oil cylinder machining frequency and transfer frequency can be reduced, the hydraulic oil cylinder can be electroplated with the copper-tin alloy through one-step operation in an electroplating production line, the hydraulic oil cylinder electroplating efficiency and transfer efficiency can be improved by 50% or above, and the production cost can be reduced by about 30%; and meanwhile, the defect that the valve hole formed in the cylinder bottom of the hydraulic oil cylinder cannot be electroplated with the copper-tin alloy is overcome, and the product service life is prolonged.

Description

technical field [0001] The invention relates to a tooling used for copper-tin alloy plating of a mine hydraulic oil cylinder, and also relates to a using method of the tooling. Background technique [0002] The copper-tin alloy coating has good corrosion resistance and is currently widely used in coal mine hydraulic support columns and jacks, especially in mine environments such as high temperature and high humidity, high chloride ions, and high sulfate ions. more prominent. [0003] For the hydraulic support column oil cylinder, the inner and outer surfaces of the cylinder are made of copper-plated tin alloy bottom sleeve with hard chromium technology, which can improve its corrosion resistance and prolong the service life of the middle cylinder. The traditional electroplating process of the middle cylinder of the hydraulic support column is: the inner hole of the middle cylinder is finished, and the outer circle is roughly machined. Copper-tin alloy plating on the inner...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a tooling for simultaneous electroplating of the inner and outer surfaces of the hydraulic cylinder. The purpose of the present invention is also to provide the use method of the tooling, which solves the problem that the bottom valve hole of the hydraulic cylinder cannot be electroplated with copper-tin alloy and prolongs the product life.

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