| Automobile aluminum wheel is an important part of the automobile, and its coating technology decides the quality of wheel hub. The automobile manufacturers attach great importance to it. In order to meet the fierce competition in the market, the manufacturer has to improve the technology level continuously to guarantee the quality of the product coating. Automobile aluminum wheel production line process, according to the requirements of the shipyard, the layout design, but in each production line includes pretreatment equipment and drying equipment. This paper takes the automobile aluminum wheel coating production line as the object of study, and analyzes the key technology issues involved in the research of the pretreatment equipment and the drying equipment.Pretreatment equipment consists of a plurality of play the role of different stations connected in series, and each station and by the tank, pipes, pumps, heating system and valve resistance formation a process unit. Aiming at pretreatment equipment, from the macro analysis, multi station between connections and interactions, and the traditional principle compared, using "inverse position replacement" can make the liquid in the tank body wastewater emissions and reduce to the trough in the supplement of fresh water, thus reducing the dose of filling liquid supplement, to achieve the purpose of more environmentally friendly. From the microscopic analysis of the working principle of single station, by the pump from the flume conveying trough liquid to the spray pipe, spray to the workpiece surface. The cleaning, phosphating, adjustable work table. The bath after the surface of the workpiece, to flow back to the tank, the formation of a single station water cycle. The two methods of analysis are the principle of the water cycle in the whole pre-processing equipment and the essence of the former equipment.Drying device is composed of a heating chamber, air duct, air return duct assembly assembly. For to the drying apparatus, the furnace body thermometer established with time marching temperature simulation model, draw the temperature curve chart, analysis of road work drying box body, depending on the location of the temperature change, calculate the hot air in the oven not with the location of the temperature fluctuation range. The trend of the hot air circulation in the oven is analyzed with the change of the coating of the wheel specimen.. In view of the air duct system, the air duct is too long, the temperature curve has concave point, and the new solution is studied. |
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