Hub coating method
A coating method and wheel hub technology, applied in the direction of surface coating liquid device, coating, pretreatment surface, etc., can solve the problems of complex coating process and serious pollution, reduce line input and improve production efficiency , Improve the effect of the overall pass rate
Pending Publication Date: 2022-04-15
三门峡戴卡轮毂制造有限公司
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- Application Information
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Problems solved by technology
However, the use of paint spraying will have environmental protection problems, serious pollution, and the coating process is complicated
Method used
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[0015] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:
[0016] The specific embodiment of the coating method of wheel hub of the present invention, as figure 1 As shown, it includes the following processes: pretreatment process, color epoxy polyester filler primer spraying process, finishing process and transparent powder spraying process.
[0017] In this embodiment, the pretreatment process includes the following steps: the aluminum alloy wheel hub is subjected to hot water washing, pre-degreasing, water washing, main degreasing, water washing, pickling, pure water washing, chrome-free passivation, pure water washing, and then baked. The furnace is baked and the cold air chamber is cooled to complete the pre-treatment. Specifically, an annular cleaning chain is used for spray cleaning, and one pass of cleaning and drying: the chain speed of the whole line is set at 3.5M / Min. On-line rough inspect...
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Abstract
The invention relates to a hub coating method. The coating method of the hub comprises the following working procedures of a pretreatment working procedure, a colored epoxy polyester filler base powder spraying working procedure, a finish turning working procedure and a transparent powder spraying working procedure. The colored epoxy polyester filler base powder spraying procedure comprises the following steps that in a powder spraying room, electrified powder is freely and evenly adsorbed to the surface of a hub through epoxy polyester pure-color powder coating or epoxy polyester colored powder coating under the action of compressed air and static electricity according to the high-voltage electrostatic spraying principle; uniformly leveling and curing the epoxy polyester pure-color powder coating or the epoxy polyester colored powder coating through an oven to form a matrix coating, wherein the thickness of the matrix coating is 90-120m; the curing time is 15-22 minutes, the curing temperature is 175-180 DEG C, and the hub is cooled for 15-20 minutes by using cooling air at the speed of 80000-100000m / H and the temperature of 20 DEG C at an outlet of a powder oven. According to the coating method of the hub, the hub coating procedure is simplified, and the hub coating cost is reduced; the influence caused by volatilization of organic matters in the paint is eliminated.
Description
technical field [0001] The invention belongs to the technical field of hub production, and in particular relates to a coating method for hubs. Background technique [0002] At present, the wheel hub after casting and machining needs to be polished and then put on the coating line to form a uniform coating on the surface of the aluminum alloy wheel hub, improve the aesthetics of the hub, and enhance the corrosion resistance and impact resistance of the hub. To meet the needs of different customers. [0003] The conventional wheel hub coating process includes the following steps: pretreatment of the wheel hub substrate to be sprayed; spraying the pretreated hub substrate according to a preset film thickness, and performing curing treatment under the first curing condition Carry out color paint spraying to the described hub base body after spraying base powder, and carry out curing treatment under the second curing condition; Carry out varnish spraying or processed transparent...
Claims
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IPC IPC(8): B05D1/38B05D1/06B05D3/02B05D3/10B05D5/06B05D7/14B05D7/00
CPCB05D1/38B05D7/536B05D1/06B05D5/06B05D3/0254B05D3/102B05D7/14B05D2504/00B05D2502/00B05D2420/01B05D2425/01
Inventor 乔文明赵欢阳李颖
Owner 三门峡戴卡轮毂制造有限公司