Coating method of automobile hub cover
An automobile wheel hub, light curing technology, used in sputtering coating, ion implantation coating, vacuum evaporation coating and other directions, can solve the problems of workers' health impact, large water consumption, high treatment cost, and achieve improved dispersion and mixing. technology, improving surface wear resistance, and the effect of good working conditions for workers
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Embodiment 1
[0027] like figure 1 Shown, the coating method of automobile hubcap comprises the following steps successively:
[0028] Pretreatment 1: Scrub with an organic solvent first to remove oil stains and residual release agents on the surface of the workpiece, and then use an electrostatic precipitator or ionization fan for dust removal treatment to neutralize the charge on the plastic surface and make the adsorbed dust fall off.
[0029] Car hubcaps are usually made of ABS (butadiene-styrene-acrylonitrile copolymer) plastic. Although ABS plastic has low crystallinity and high polarity, it can be directly painted, but its adhesion is not high, so pretreatment is required to improve adhesion and coating quality.
[0030] First of all, the surface oil and residual release agent should be completely removed. Residues of release agents (zinc stearate, silicone oil) are likely to cause defects such as coating shrinkage and poor adhesion, so they should be removed. There are many degre...
Embodiment 2
[0057] In this embodiment, the three steps of pretreatment 1, light-curing primer 2, and light-curing top coat 4 are the same as those in the embodiment.
[0058] In the 3rd step of ion bombardment chrome plating, cathodic arc ion plating equipment should be used for ion bombardment chrome plating, and the process parameters are as follows:
[0059] Chromium target (Φ60mm) 18
[0060] Distance between target and workpiece 400mm
[0061] Vacuum 1×10 -1 pa
[0062] Target flow 40A
[0063] Target voltage 20V
[0064] The time is 2 minutes.
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