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Acid zinc-nickel alloy electroplating process applied to automobile parts

A technology for auto parts and electroplating process, applied in the field of acid zinc-nickel alloy electroplating process for auto parts, can solve the problems of prolonged time and high processing temperature, and achieve the effects of mild process conditions, smooth surface and improved processing efficiency

Inactive Publication Date: 2016-10-12
南通创源电化学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the current electroplating process, the electroplated substrate needs to be degreased before electroplating. The degreasing process currently used is alkaline degreasing, and the temperature is generally 80-90°C. For workpieces with serious oil pollution, the treatment temperature is higher. The time is also extended until the oil stain is completely removed.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Present embodiment automobile parts use acidic zinc-nickel alloy electroplating process, and the concrete steps of this electroplating process are as follows:

[0030] (1) Chemical degreasing: chemically degreasing the surface of the parts to be plated, the chemical degreasing uses HCM-01 with a concentration of 60g / L, the degreasing temperature is 65°C, and the degreasing time is 12min; then put it into the cleaning Wash in the tank for 10s;

[0031] (2) Primary anode electrolysis: Send the plated parts after chemical degreasing into the anode electrolytic cell for primary anode electrolysis at 35°C and 3A / dm 2 Perform electrolysis for 4 minutes under the condition of the water, and then put it into the cleaning tank for 10 seconds;

[0032] (3) Pickling: Send the plated parts after anodic electrolysis into a 200ml / L hydrochloric acid pickling pool, pickle at room temperature for 6 minutes, and then put them in the cleaning tank for 300s;

[0033] (4) Pre-galvanizing...

Embodiment 2

[0045] Present embodiment automobile parts use acidic zinc-nickel alloy electroplating process, and the concrete steps of this electroplating process are as follows:

[0046] (1) Chemical degreasing: chemically degreasing the surface of the parts to be plated, the chemical degreasing uses HCM-01 with a concentration of 80g / L, the degreasing temperature is 55°C, and the degreasing time is 8min; then put it into the cleaning Wash in the tank for 5s;

[0047] (2) Primary anode electrolysis: Send the plated parts after chemical degreasing into the anode electrolytic cell for primary anode electrolysis at 45°C and 6A / dm 2 Under the conditions of electrolysis for 2 minutes, then put it into the cleaning tank and wash it with water for 5 seconds;

[0048] (3) Pickling: Send the plated parts after anodic electrolysis into a 300ml / L hydrochloric acid pickling pool, pickle at room temperature for 4 minutes, and then put them in the cleaning tank for 200s;

[0049] (4) Pre-galvanizing:...

Embodiment 3

[0061] Present embodiment automobile parts use acidic zinc-nickel alloy electroplating process, and the concrete steps of this electroplating process are as follows:

[0062] (1) Chemical degreasing: chemically degreasing the surface of the parts to be plated, the chemical degreasing uses HCM-01 with a concentration of 70g / L, the degreasing temperature is 60°C, and the degreasing time is 10min; then put it into the cleaning Wash in the tank for 8s;

[0063] (2) Primary anode electrolysis: Send the plated parts after chemical degreasing into the anode electrolytic cell for primary anode electrolysis at 40°C and 3-6A / dm 2 Under the conditions of electrolysis for 3 minutes, then put it into the cleaning tank and wash it with water for 8 seconds;

[0064] (3) Pickling: Put the plated parts after anodic electrolysis into a 250ml / L hydrochloric acid pickling pool, pickle at room temperature for 5 minutes, and then put them in the cleaning tank for 250s;

[0065] (4) Pre-galvanizin...

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Abstract

The invention relates to an acid zinc-nickel alloy electroplating process applied to automobile parts. The electroplating process comprises the following steps: chemical deoiling, carrying out primary anode electrolysis, carrying out acid pickling, pre-plating zinc, carrying out acid pickling and deplating, ultrasonically deoiling, carrying out secondary anode electrolysis, activating, plating acid zinc nickel, carrying out bright dipping, passivating trivalent chromium, sealing, air shearing and drying. Compared with the existing process, the acid zinc-nickel alloy electroplating process applied to automobile parts has the advantages that deoiling is carried out twice and comprises chemical deoiling and ultrasonic deoiling; compared with the independent chemical deoiling, the process is mild in condition; the treatment efficiency is also greatly improved; and meanwhile, anode electrolysis is carried out after deoiling for each time, so that the corrosion caused in the deoiling process can be removed, thus the subsequent electroplating effect is ensured.

Description

technical field [0001] The invention belongs to the technical field of electroplating, in particular to an acidic zinc-nickel alloy electroplating process for auto parts. Background technique [0002] Electroplating is the process of plating a thin layer of other metals or alloys on the surface of the base material using the principle of electrolysis. It is a process of using electrolysis to attach a layer of metal film to the surface of metal or other material parts to prevent metal oxidation (such as rust), improve wear resistance, electrical conductivity, reflective properties, corrosion resistance (acid sulfur copper, etc.) and enhance the appearance. [0003] Automobile braking system refers to a special braking mechanism that installs a braking device on an automobile in order to technically ensure the safe driving of the automobile and increase the average speed of the automobile. Car brake caliper is one of the car brake systems. Car brake caliper is a part of the d...

Claims

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Application Information

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IPC IPC(8): C25D3/22C25D3/56C25D5/52C23C22/53C25D5/34
CPCC25D3/565C23C22/53C25D3/22C25D5/34C25D5/52
Inventor 沈宇
Owner 南通创源电化学科技有限公司
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