Surface chromate-plating processing process for metal piston ring production

Abstract

The invention relates to a surface chromate-plating processing process for metal piston ring production. The surface chromate-plating processing process for metal piston ring production adopts a following piston ring surface chromate-plating processing device. The piston ring surface chromate-plating processing device comprises a bottom plate, an electroplating pool, an immersion device, an electroplating hanger and a rotating mechanism, wherein the immersion device comprises a rotating rod, an immersion motor, a bearing seat, a rotating plate and a fixing element. The surface chromate-platingprocessing process for piston ring production adopting the piston ring surface chromate-plating processing device comprises the following steps of S1, preparing for electroplating; S2, installing thehanger; S3, uniformly electroplating; and S4, cyclically electroplating. According to the surface chromate-plating processing process for metal piston ring production provided by the invention, the continuous surface chromate-plating for metal piston ring production can be accomplished, and the problems that when a piston ring is clamped and fixed by an existing clamping tool, the surface of a clamped part of the piston ring cannot be electroplated completely, an electroplating dead space exists, an electroplated layer on the surface of the piston ring is non-uniformly distributed, the product quality of the piston ring is affected and the like are solved.

Description

technical field [0001] The invention relates to the technical field of chrome plating of piston rings, in particular to a chrome plating process for the production surface of metal piston rings. Background technique [0002] Piston rings are metal rings used to embed in piston grooves. Piston rings are divided into two types: compression rings and oil rings. The compression ring is used to seal the combustible mixture in the combustion chamber; the oil ring is used to scrape excess oil from the cylinder. [0003] The piston ring is a metal elastic ring with a large outward expansion deformation, which is assembled into the corresponding annular groove of the section. The reciprocating and rotating piston rings rely on the pressure difference of gas or liquid to form a seal between the outer circular surface of the ring and the cylinder and one side of the ring and the ring groove. The piston ring is the core component inside the fuel engine, and it completes the sealing of...

AI Technical Summary

Problems solved by technology

[0005] 1. Clamping electroplating refers to the manual use of clamps to clamp and fix the metal piston ring, and then immerse it in the electroplating solution. During the electroplating operation, due to the clamping and fixing of the piston ring by the clamping tool, the piston ring is clamped The surface of the part cannot complete the electroplating operation during electroplating, and there is an electroplating dead angle, which makes the distribution of the electroplating layer on the surface of the piston ring uneven, thus affecting the quality of the piston ring product;

[0006] 2. Immersion electroplating refers to manually putting the piston rings to be electroplated into the electroplating pool filled with electroplating solution, and then performing electroplating operation. In this way, the piston rings will sink and fall to the bottom of the electroplating pool. This stacking electroplating method , so that the surface of the piston ring cannot be completely and evenly contacted with the electroplating solution, so that the thickness of the electroplating layer of the piston ring is uneven and prone to electroplating dead angles, the electroplating effect is poor, and it is not convenient for centralized collection after the electroplating is completed

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