Wire drawing can eliminate abrasions, scratches, machining knife marks, etc. of aluminum
alloy profiles. 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 surface of the aluminum alloy. However, for the demanding wire drawing process, 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 it with a strong decorative effect to increase the appearance of the product. This is also the current situation. A commonly used decoration method. In recent years, the wire drawing process 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 belt wire drawing machine can be used. This wire drawing method can be selected according to the surface requirements of the product. For silk grains with obvious hand feeling, fine-grained sanding belts can also be used to process finer silk grains. For small workpieces, a rubbing machine with a simpler structure can also be used, and the thickness of the wire 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 concealing the surface defects of aluminum alloy workpieces while providing decoration. For sandblasting and wire drawing, wire drawing is easier to cover the surface defects of aluminum alloy workpieces. 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. After the drawing of the workpiece is alkali etching, it is possible to have a negative and positive surface (that is, when the surface of the workpiece has different shades of variegation under a certain angle of light), this is mainly caused by material reasons, and the alkali is used in advance before drawing. Erosion or acid etching can reduce or prevent the occurrence of such phenomena.
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