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Jin Yuan Kang Industry Co., Ltd.

Electroplating of Automobile decorative parts
Electroplating of Automobile decorative parts
Electroplating of Automobile decorative parts

Electroplating of Automobile decorative parts

Product Description

Application of electroplating in automobile industry
As an important means to prolong the service life, improve the power performance and improve the exterior decoration performance of the automobile, electroplating technology has put forward more strict quality requirements with the rapid development of the automobile industry. Electroplating is becoming more and more widely used in automobile industry.
Shock absorber link
The past absorber connecting rod by electroplating through UAE hard Chromium Plating, corrosion resistance can not meet the requirements. The day before the HEEF25 micro crack chromium Plating Process, plating thickness is 20 + 5 and 10L + 3; specifications, general requirements of crack number 600 / 400 cm, to ensure a positive role for piston rod of shock absorber corrosion resistance and lubricity. In this process, the current density has obvious relation with the number of microcracks, the shape of cracks and the amount of atmosphere. General control at 58A/dm2 is official. The design of cylindrical anode and the polishing after plating affect the quality.
Bearing bush
In order to prevent the Sn from coating to form a brittle phase from bulk heat diffusion, a layer of nickel gate is added to the shell of the large power engine, and the electroplated Pb-Sn-Cu alloy is used instead of the Pb-Sn two element alloy coating.
Piston, piston ring, connecting rod
The piston, piston ring and connecting rod are three moving parts of the automobile engine, and the friction loss is about 40-50% of the total loss of the engine. Reducing the weight of piston, piston ring and connecting rod and improving its friction environment are of great significance for reducing engine vibration, noise reduction and fuel consumption reduction.
The piston without any surface treatment or only immersion tin (the formation of the running in layer): piston rings with chrome phosphating, even only a screw connecting rod by Du oxidation; bearing on the connecting rod by electroplating Pb-Sn alloy and electroplating processing Sn two yuan. These electroplated coatings can not meet the needs of high speed, high power, compact and modern ECR technology for modern engines.
Intake and exhaust valve
The friction loss of intake and exhaust valves is about 2% of the energy loss of the engine. Loss reduction measures: the structure size of inlet and exhaust valves, the use of lightweight materials such as titanium alloy by mouth Depp heat-resistant steel. Work at 750 degrees high temperature, but also in the engine exhaust gas in the scale of the probe, the exhaust valve will be fierce oxidation, the surface must be potassium, usually by spraying molybdenum, salt bath furnace nitriding.
Recently introduced processing method for one month from the carburizing treatment, effect of the process on the environment, formed on the surface of TiC hardened layer than the heat-resistant layer depth of 50 m point infiltration furnace salt bath steel. The hardness of HV700. oxidation resistance, wear resistance, heat resistant steel valves, processing costs than salt bath some of the expensive processing furnace.
Exhaust cylinder, muffler
The exhaust system installed on the chassis of the automobile is corroded by the mud, sand and other environmental corrosion of the road, and also suffers from erosion and oxidation of the exhaust gas at high temperature above 400 degrees. The working environment is very bad. The material of the exhaust system is made of stainless steel and hot-dip aluminum plate. In the use of work process, the aluminized plate often occurs blackening and corrosion of the coating, the whole car corrosion test, 40 cycles have 5 levels of corrosion, corrosion resistance is inferior to stainless steel. The addition of silicon element in hot aluminizing can restrain the growth of Fe Al alloy layer and improve the machinability. The service life of hot plate aluminum is related to the coating thickness, forming process and working temperature.
Automobile decorative parts
Plastic parts are often used in the decoration of modern automobiles. High-grade automotive plastic decorative plating requirements of corrosion resistance, heat shock resistance, decoration is extremely high.

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Product Categories : Plastic Water Plating Process > Half Chrome Plating

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