CN212640651U - Anode for chrome plating of surface of piston rod of automobile shock absorber - Google Patents

Abstract

An anode for chrome plating of the piston rod of automobile shock absorber is prepared as distributing exchange holes on front, back, left and right surfaces of anode body, setting round working holes on top and bottom surfaces of anode body for through hole, distributing reinforcing ribs on top surface, bottom surface and middle position of anode, distributing copper bar connecting arms on left and right surfaces of anode, distributing copper bar connecting holes on copper bar connecting arms, and casting whole anode by lead-tin alloy through mould. The advantage is, makes work piece surface obtain even cladding material after the use, and its thickness is 17 +/-5 um to promote the life of bumper shock absorber and be 24 months to 30 months, and promoted the long-term quality stability of electroplating of product, electroplate the product cladding material thickness qualification rate 98%.

Description

Anode for chrome plating of surface of piston rod of automobile shock absorber

Technical Field

The utility model relates to a metal surface treatment field, in particular to automobile shock absorber piston rod is positive pole for surface chromium plating.

Background

At present, the surface of a piston rod of an automobile shock absorber needs to be subjected to chromium plating treatment, the surface after chromium plating can not only be effectively rustproof, but also the wear resistance of the surface of the piston rod is improved, thereby prolonging the service life of the shock absorber, along with the development of the automobile industry, customers put forward higher requirements on the plating layer of a product with thick chromium plating, the thickness of the chromium plating layer is required to be 17 +/-5 mu m, however, when the piston rod is electroplated by the traditional electroplating, an anode rod is usually used as an electroplating anode, for the convenience of manufacturing, the anode rod is usually in a solid strip circular rod structure, the electroplating is carried out by adopting the method, the electroplating is influenced by the anode distribution in the circumferential direction of a workpiece, the electroplating current is easily distributed unevenly, the plating layer of the product after electroplating is uneven, the requirements of the product can not be met, even the workpiece has an ellipse and no plating layer locally, the anode is often deformed under the influence of bath corrosion and bath temperature, which aggravates the above-mentioned situation. The service life of the traditional anode is generally 12 months to 18 months, and the qualified rate of the thickness of the plating layer of the electroplated product is 85 percent.

Disclosure of Invention

An object of the utility model is to solve the above-mentioned current problem that exists, provide an automobile shock absorber piston rod anode for surface chromium plating that can make automobile shock absorber piston rod longe-lived.

The utility model discloses a realize through following technical scheme: the anode mainly comprises six parts, namely an anode main body, exchange holes, reinforcing ribs, working holes, copper bar connecting arms and copper bar connecting holes, wherein the exchange holes are distributed on the front, back, left and right surfaces of the anode main body, the circular working holes are formed in the top surface and the bottom surface of the anode main body and penetrate through holes, the reinforcing ribs are distributed on the top surface, the bottom surface and the middle position of the anode, the copper bar connecting arms are distributed on the left surface and the right surface of the anode, the copper bar connecting holes are distributed on the copper bar connecting arms, and the whole anode is cast by using lead-tin alloy through a.

The utility model has the advantages that, when using automobile shock absorber ware piston rod surface chromium plating to use the positive pole, exchange hole 2 runs through positive pole main part 1 front and back and left and right sides respectively, run through with work hole 4 simultaneously, the centre of a circle department of work hole 4 of positive pole main part 1 is used for placing the work piece of treating plating, at the top surface of positive pole main part 1, the bottom surface, mid portion all cloth has strengthening rib 3, mainly prevent to use back positive pole main part 1 to warp for a long time, it is coaxial through arranging work piece axis and positive pole work part axis in, work piece circumferencial direction will obtain even electric current, thereby make the work piece surface obtain even cladding material, chromium-plated layer thickness is 17 +/-5 um, the wearability on piston rod surface has been promoted, thereby promote the life of bumper shock absorber, life is 24 months to 30 months. Meanwhile, the anode is integrally cast and has a special structure, so that the anode is not easy to deform under the influence of bath solution corrosion and bath temperature, the quality stability of long-term electroplating of products is improved, and the coating thickness qualified rate of the electroplated products is 98%.

Traditional anode and the utility model dial gauge

	Service life	The coating thickness qualification rate of the electroplated product
			Conventional anode	12-18 months	85%
The invention	24-30 months	98%

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is a front view of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a top view;

FIG. 5 is a left side view;

fig. 6 is a cross-sectional view B-B of fig. 5.

Detailed Description

The following detailed description is made with reference to the accompanying drawings: the anode comprises an anode body 1, wherein exchange holes 2 for discharging gas and exchange bath liquid in the electroplating process are uniformly distributed on the front, the back, the left and the right of the anode body 1, the exchange holes 2 respectively penetrate through the front, the back, the left and the right of the anode body 1 and simultaneously penetrate through working holes 4, the working holes 4 are round holes and penetrate through the top surface and the bottom surface of the anode body 1, a workpiece to be plated is placed at the circle center of each working hole 4, copper bar connecting arms 5 are distributed on the left and the right of the anode body 1, copper bar connecting holes 6 are distributed on the copper bar connecting arms 5 and are mainly used for connecting power copper bars for conducting electricity, reinforcing ribs 3 are distributed on the top surface, the bottom surface and the middle part of the anode body 1, the deformation of the anode body 1 after long-time use is mainly prevented.

Claims (1)

1. The anode for chrome plating of the surface of the piston rod of the automobile shock absorber is characterized in that exchange holes are uniformly distributed on the front, the back, the left and the right of an anode main body, penetrate through the front, the back, the left and the right of the anode main body respectively and penetrate through working holes, the working holes are round holes and penetrate through the top surface and the bottom surface of the anode main body, a workpiece to be plated is placed at the circle center of each working hole, copper bar connecting arms are distributed on the left and the right of the anode main body, copper bar connecting holes are distributed in the copper bar connecting arms, and reinforcing ribs are distributed on the top surface, the bottom surface and the middle of.

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