Rolled with lubricant, anti-oxide grease and impurities of silicon, magnesium, tellurium, and copper left on the surface, the pretreatment line of aluminum coil can be cleaned to form a compact honeycomb oxide layer of film (non-toxic, tasteless, no waste water) on a work piece’s surface. Such a line can provide better endurance, along with a strong adhesion layer – if an advanced coating and painting processing technology already exists. Such an environmentally-friendly process can also be less expensive.
Aluminum coil, depending upon the usage, is painted with a variety of paint types on the surface, after pretreatment. It is then baked in an oven that is equipped with automatic temperature controls, forming the coated aluminum coil so that it functions at or perhaps exceeds industry standards. Three-painting and two-baking methodology are adapted to the line. The process of bottom painting, cover painting and back painting are completed in a single process. The bottom painting and cover painting machines can also adopt an advanced three-roll precision converse roller painting technology. In such an instance, the back painting machine will adopt the advanced two-roller precision converse roller painting technology. When the thickness tolerance of the painted film can be insured less than +/- 1um, the appearance quality of the painted film is best achieved. If the oven can be made to adopt an advanced design, with which the temperature is balanced and the energy-conservation is above 30%, an acceptable level of quality is then assured, and the possibility for reducing cost is simultaneously created.
If this line, as newly coated, includes storage sets in the winding and unwinding segments, an additional degree of difficulty may arise. The storage sets within the winding and unwinding segments can often be intriguing. Additional complexities can be added to any segment, and often configured remotely.
When the coating segment works normally, the winding and unwinding segments can stop to load and unload the aluminum coil. The efficiency and using ration of the aluminum coil and painting would achieve a greater level of improvement if compared to a production line that is less continuous, or intermittent in its display. A satisfying conclusion can be reached if the line is made to adopt a series of closed loop intensions, called “conveyor loop intensions,” which can often be maintained and even controlled by computer or PLC.
Article Directory : http://www.articlecube.com
