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Spraying process for automobile hub

A technology of automobile wheel hub and process, which is applied in the direction of coating, liquid coating device on the surface, surface pretreatment, etc., can solve the problems of corrosion damage of aluminum alloy wheel hub, rough surface of aluminum alloy hub, easy to fall off, etc., and achieve increase Corrosion resistance, avoiding hub corrosion, and improving adhesion

Active Publication Date: 2017-05-10
GUANGDONG DCENTI AUTO PARTS STOCK LTD
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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

[0031] Automobile hub spraying process of the present invention, comprises the following steps:

[0032] S1: Pretreatment of the surface of the automobile wheel hub: put the automobile wheel hub into the degreasing solution to effectively remove the grease and impurities on the surface of the hub hub; after washing and drying, the surface of the hub hub is derusted by sandblasting or sandpaper polishing . The degreasing solution is an aqueous solution containing 5% by weight of sodium salt, surfactant and cleaning agent, and the weight percentage of the sodium salt, surfactant and cleaning agent is 15:10:75. In the present embodiment, the sodium salt is sodium phosphate, the surfactant is ammonium dodecylsulfonate, and the cleaning agent includes 50 parts by weight of turpentine, 5 parts of liquid paraffin, 10 parts of silicone oil , 8 parts of Tween, 5 parts of palm wax, 6 parts of acetone and 10 parts of absolute ethanol. Use S1 to remove the grease and impurities on the s...

Embodiment 2

[0042] Automobile hub spraying process of the present invention, comprises the following steps:

[0043] S1: Pretreatment of the surface of the automobile wheel hub: put the automobile wheel hub into the degreasing solution to effectively remove the grease and impurities on the surface of the hub hub; after washing and drying, the surface of the hub hub is derusted by sandblasting or sandpaper polishing . The degreasing solution is an aqueous solution containing 8% by weight of sodium salt, surfactant and cleaning agent, and the weight percentage of the sodium salt, surfactant and cleaning agent is 8:20:72. In the present embodiment, the sodium salt is sodium phosphate, the surfactant is ammonium dodecylsulfonate, and the cleaning agent includes 50 parts by weight of turpentine, 5 parts of liquid paraffin, 10 parts of silicone oil , 8 parts of Tween, 5 parts of palm wax, 6 parts of acetone and 10 parts of absolute ethanol. Use S1 to remove the grease and impurities on the su...

Embodiment 3

[0053] Automobile hub spraying process of the present invention, comprises the following steps:

[0054] S1: Pretreatment of the surface of the automobile wheel hub: put the automobile wheel hub into the degreasing solution to effectively remove the grease and impurities on the surface of the hub hub; after washing and drying, the surface of the hub hub is derusted by sandblasting or sandpaper polishing . The degreasing solution is an aqueous solution containing 6% by weight of sodium salt, surfactant and cleaning agent, and the weight percentage of the sodium salt, surfactant and cleaning agent is 10:15:75. In the present embodiment, the sodium salt is sodium phosphate, the surfactant is ammonium dodecylsulfonate, and the cleaning agent includes 50 parts by weight of turpentine, 5 parts of liquid paraffin, 10 parts of silicone oil , 8 parts of Tween, 5 parts of palm wax, 6 parts of acetone and 10 parts of absolute ethanol. Use S1 to remove the grease and impurities on the s...

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Abstract

The invention discloses a spraying process for an automobile hub. The spraying process for the automobile hub comprises the following steps of S1, pretreating the surface of the automobile hub: removing oil on the surface of the automobile hub, and then removing rust on the surface of the hub through sand blasting or sand papering; S2, soaking the hub in a diluted alkali solution, taking out the hub, and washing with water; S3, preparing a diluted silane coupling agent solution, soaking the hub into the silane coupling agent solution, taking out the hub, and drying in the air; S4, spraying epoxy resin paint on the surface of the hub, and solidifying at high temperature to form a paint layer; S5, spraying paint on the surface of the hub, and solidifying at high temperature; and S6, spraying gloss oil on the surface of the hub, drying in the air at the room temperature. According to the spraying process for the automobile hub, the metal surface of the hub and the paint are fastened and combined through a silane coupling agent, a hub base material, the coupling agent and a paint coating are combined through chemical bonds, the adhesive force of the paint coating is greatly improved, and in addition, the silane coupling agent forms a silane film layer on the surface of the hub, so that the hub is effectively coated, and the resistance to corrosion of the hub is improved.

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 of 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, wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/38B05D3/12B05D3/10B05D3/02
CPCB05D1/38B05D3/0254B05D3/102B05D3/12B05D2504/00
Inventor 谭红建
Owner GUANGDONG DCENTI AUTO PARTS STOCK LTD
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