The wire drawing of Shanghai Qinglong Aluminum Company is a manufacturing process of repeatedly scraping aluminum plates with sandpaper. The main process is divided into three parts: degreasing, sanding and washing. This is a high-precision process, and only aluminum alloy with pure metal texture can carry this process. Wire drawing is a metal processing technology. In metal pressure machining, the metal is forced to pass through the die under the action of external force, and the cross-sectional area of the metal is compressed to obtain the required shape and size of the cross-sectional area. This technical processing method is called metal wire drawing process. The tool to change its shape and size is called a wire drawing die. After the adhesive is prepared, it will partially condense into filaments under tension. When spraying, the coating is not atomized well, so that the coating can not be turned into fine droplets and sprayed out in a filiform manner, and the obtained coating film can not be leveled, which leads to wire drawing. The reason is that the coating construction viscosity is high and the diluent solubility is poor. Appropriate solvent should be selected and adjusted to the appropriate construction viscosity, so that the coating can be fully atomized and leveled during spraying to avoid this disadvantage. Metal wire drawing is a manufacturing process of repeatedly scraping aluminum plate with sandpaper, and its main process flow is divided into three parts: degreasing, sanding and water washing. In the process of wire drawing, the special coating technology after anodic treatment can form a coating containing this metal component on the metal surface, which can clearly show every tiny silk trace, thus making the metal matte glow with fine hair luster. Drawing process introduction drawings can be made into straight lines, random lines, threads, ripples and spirals according to the needs of decoration. Straight wire drawing refers to machining straight lines on the surface of aluminum plate through mechanical friction. It has the dual functions of brushing off scratches on the surface of aluminum plate and decorating the surface of aluminum plate. There are two kinds of linear drawing: continuous drawing and intermittent drawing. Continuous lines can be obtained by rubbing the surface of aluminum plate with scouring pad or stainless steel brush continuously horizontally and linearly (for example, grinding wire brush on aluminum plate by hand or plane under the existing equipment conditions). By changing the diameter of steel wire of stainless steel brush, lines with different thickness can be obtained. Intermittent patterns are generally made by polishing machine or rubbing machine. Manufacturing principle: two groups of differential wheels rotating in the same direction are adopted, the upper group is a fast-rotating grinding roller and the lower group is a slow-rotating rubber roller. Aluminum or aluminum alloy plates pass through two sets of rollers to brush out fine intermittent straight lines. Random wire drawing is an irregular matte silk pattern with no obvious grain, which is obtained by rubbing aluminum plate back and forth, left and right under high-speed copper wire brush. This kind of processing requires higher surface of aluminum or aluminum alloy plate. Wrinkling is usually carried out on a polishing machine or abrasive machine. Using the axial movement of the upper group of grinding rollers, the surface of aluminum or aluminum alloy plate is ground and brushed to get wavy patterns. Rotary pattern, also known as optical rotation, is a kind of silk pattern obtained by rotating and polishing the surface of aluminum or aluminum alloy plate with cylindrical felt or grinding nylon wheel on drilling machine and blending and polishing ointment with kerosene. It is mostly used for decorative processing of circular signs and small decorative dials. The wire is fixed on the desktop by a small motor with a round felt on the shaft, forming an angle of about 60 degrees with the edge of the desktop. In addition, make a tray with fixed aluminum plate for pressing tea, and stick a straight polyester film on the tray to limit line competition. Using the rotation of felt and the linear motion of carriage, lines with equal width are rubbed on the surface of aluminum plate. Of course, you have to wire draw first, and then electroplate. Before bending and other forming, it is generally flat wire drawing. In fact, surface treatment requires high pretreatment of the substrate, otherwise the defects of the large substrate will be played back after surface treatment. To realize the fanless cooling structure, the first thing to consider is the material of the chassis. Gold, silver and copper are recognized as the best heat conductors, but their prices are also recognized as expensive. Among many metals, aluminum is the most common, its thermal conductivity is only lower than that of gold, silver and copper, and its price is also accepted by the public. It is a good thermal conductor. The chassis made by aluminum wire drawing technology can make the heat evenly transmitted to the surface of the chassis, form an effective radiator and achieve good heat dissipation effect.