Wire drawing can eliminate abrasions, scratches, machining knife marks, etc. of the industry aluminum profile. The degree of elimination is related to the depth of wire drawing. Generally speaking, the greater the depth of wire drawing, the stronger the ability to eliminate physical defects on the aluminum alloy surface. However, for the demanding wire drawing treatment, it is necessary to use polishing or polishing to eliminate the surface defects of the workpiece in advance, especially for the thin wire. In addition to the above-mentioned elimination of surface defects of aluminum alloy workpieces, wire drawing can improve the texture of metal materials and provide a strong decorative effect to increase the appearance of the product. This is also the current A commonly used decoration method. In recent years, wire drawing has been widely used in the shell decoration of a variety of electronic products, such as notebook computer panels, keyboards, mobile phone panels and other digital product-related components.
The surface drawing of aluminum alloy is carried out by a wire drawing machine. For small flat workpieces, a flat pressure type abrasive belt drawing machine can be used. According to the different surface requirements of the product, the coarse-grained abrasive belt can be selected to process a rough, For silk patterns with obvious hand feeling, fine-grained sanding belts can also be used to process finer silk patterns. For small workpieces, a rubbing machine with a simpler structure can also be used, and the wire thickness can also be controlled according to the size of the abrasive block. Roller brush wire drawing or wide abrasive belt wire drawing can also be used for large workpieces or plates. For the specific operation method of wire drawing, please refer to the operation manual of the wire drawing equipment.
The sandblasting or wire drawing discussed above has the function of covering the surface defects of aluminum alloy workpieces while providing decoration. For sandblasting and wire drawing, wire drawing is easier to conceal the surface defects of aluminum alloy workpieces, and for deep wire drawing The pattern even allows obvious scratches, abrasions and other machining marks on the surface of the workpiece. For sandblasting, only slight scratches and abrasions are allowed. For workpieces with obvious machining marks, they should be polished or polished in advance before sandblasting.
When the wire drawing work is subjected to alkali etching, it is possible that the negative and the sun may appear (that is, when the surface of the work is illuminated at a certain angle, the surface has different shades of mottling), which is mainly caused by material reasons. The alkali is used before drawing. Erosion or acid etching can reduce or prevent the occurrence of such phenomena.