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Automobile hub spraying process

A technology for automobile wheels and crafts, applied in coatings, powder coatings, polyester coatings, etc., can solve problems such as rough surface of aluminum alloy wheels, corrosion damage of aluminum alloy wheels, weak adhesion of anti-corrosion coatings, etc., to overcome paint peeling Shedding, less demanding, improved chemical resistance

Inactive Publication Date: 2015-10-28
ANHUI AUHER ALUMINUM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the surface of the aluminum alloy wheel is not smooth or has stains before the anti-corrosion coating is applied, the anti-corrosion coating will not adhere firmly and will easily fall off, causing the aluminum alloy wheel to be corroded and damaged

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of automobile hub spraying process is characterized in that comprising the following steps:

[0020] Step 1. Degrease, derust and polish the car hub, and the polishing includes sandblasting or grinding and polishing.

[0021] Step 2. Alkali etching treatment is carried out on the surface of the automobile wheel hub, and fluorocarbon spraying is carried out by electrostatic liquid phase spraying method to form a fluorocarbon coating. The fluorocarbon coating is synthesized with polyvinylidene fluoride resin as a base material and aluminum powder.

[0022] Carry out alkali etching treatment on the surface of the automobile hub, specifically including: preparing 50g / L alkali solution; adding 20g / L alkali etching agent to the alkali solution, and stirring evenly; after heating the alkali solution to 50°C, Submerge the aluminum alloy wheel hub into the alkaline solution; maintain the above temperature, and take out the aluminum alloy wheel hub after 5 minutes.

[002...

Embodiment 2

[0028] A kind of automobile hub spraying process is characterized in that comprising the following steps:

[0029] Step 1. Degrease, derust and polish the car hub, and the polishing includes sandblasting or grinding and polishing.

[0030] Step 2. Alkali etching treatment is carried out on the surface of the automobile wheel hub, and fluorocarbon spraying is carried out by electrostatic liquid phase spraying method to form a fluorocarbon coating. The fluorocarbon coating is synthesized with polyvinylidene fluoride resin as a base material and aluminum powder.

[0031] Carry out alkali etching treatment on the surface of the automobile hub, specifically including: preparing 50g / L alkali solution; adding 25g / L alkali etching agent to the alkali solution, and stirring evenly; after heating the alkali solution to 60°C, Submerge the aluminum alloy wheel hub into the alkaline solution; maintain the above temperature, and take out the aluminum alloy wheel hub after 8 minutes.

[003...

Embodiment 3

[0037] A kind of automobile hub spraying process is characterized in that comprising the following steps:

[0038] Step 1. Degrease, derust and polish the car hub, and the polishing includes sandblasting or grinding and polishing.

[0039] Step 2. Alkali etching treatment is carried out on the surface of the automobile wheel hub, and fluorocarbon spraying is carried out by electrostatic liquid phase spraying method to form a fluorocarbon coating. The fluorocarbon coating is synthesized with polyvinylidene fluoride resin as a base material and aluminum powder.

[0040] Carry out alkali etching treatment on the surface of the automobile hub, specifically including: preparing 65g / L alkali solution; adding 22g / L alkali etching agent to the alkali solution, and stirring evenly; after heating the alkali solution to 55°C, Submerge the aluminum alloy wheel hub into the alkaline solution; maintain the above temperature, and take out the aluminum alloy wheel hub after 6.5 minutes.

[0...

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PUM

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Abstract

The invention discloses an automobile hub spraying process which comprises the following steps: step 1, conducting deoiling, derusting and polishing on an automobile hub; step 2, conducting alkaline etching treatment on the surface of the polished automobile hub without oil and rust, and carrying out fluorocarbon spraying according to a static liquid-phase spraying method; step 3, washing the automobile hub subjected to fluorocarbon spraying, coating the washed automobile hub with a parkerized or passivated leather film, and then drying and fixing; step 4, spraying thermoset powder coating onto the dried and fixed automobile hub with a static spraying gun; step 5, conducting high-temperature curing and baking on the automobile hub onto which the thermoset powder coating is sprayed. Therefore, the heat resistant, low-temperature resistant and chemical resistant properties can be improved, and the special non-stick and low friction properties are achieved.

Description

technical field [0001] The invention relates to the field of wheel hub manufacturing, in particular to an automobile wheel hub spraying process. Background technique [0002] Aluminum alloy wheels have won the favor of more and more private car owners for their elegant appearance, safety and comfort. Now, almost all new models use aluminum alloy wheels. There are many ways to manufacture aluminum alloy wheels. Among them, low-pressure casting is the most basic method for producing aluminum alloy wheels, and it is also relatively economical. It is to cast molten metal in a mold and harden it; reverse pressure casting is a more advanced casting method. , use the suction generated by high vacuum to suck the metal into the mold, which is conducive to maintaining a constant temperature and removing impurities. There are no pores in the casting and the density is uniform, and the strength is very high; forging is the most advanced method for manufacturing aluminum alloy wheels, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D7/14B05D3/12B05D3/10B05D3/02C09D127/16C09D167/00C09D7/12C09D5/03
Inventor 戚召建
Owner ANHUI AUHER ALUMINUM TECH
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