Detailed drawing process of aluminum profile surface

Drawing process refers to the use of sandpaper on the surface of aluminum alloy repeatedly grinding and scraping until the strip is scraped. There are many kinds of wire drawing. After the drawing process, the surface of the aluminum profile can be very clear to see every line. At the same time, the metal matte of the aluminum profile products will show a fine hair luster, so that the aluminum profile becomes more fashionable and scientific.

Drawing can eliminate scrapes, scratches and machining knife marks of aluminum 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 the defects on the surface of aluminum profile. However, for high-demand wire drawing treatment, it is necessary to use polishing or polishing pretreatment before wire drawing to eliminate the surface defects of the workpiece, especially for shallow wire drawing.

In addition to eliminating the defects on the surface of aluminum profiles, wire drawing plays a more important role in improving the texture of metal materials and providing good decorative effect for aluminum profiles to increase the beauty of products. This is also a commonly used treatment method.

The surface drawing of aluminum profile is carried out by drawing machine. For small flat workpiece, flat pressing belt drawing machine can be used. According to the surface requirements of the product, this drawing method can choose coarse-grained belt to process rough and obvious silk lines, or fine-grained belt to process more delicate silk lines. For small workpiece can also be used a more simple structure of the erasing machine to carry out, the thickness of the silk can also be controlled according to the thickness of the grinding block particle size. For large workpiece or plate can also use roller brush drawing or wide sand belt drawing.

Drawing can be made into straight lines, messy lines, threads, ripples and spiral lines according to decorative needs.

1. Straight drawing refers to the straight lines processed by mechanical friction on the surface of aluminum plate. It has the dual function of brushing and removing scratches on the surface of aluminum plate and decorating the surface of aluminum plate. There are two kinds of straight drawing: continuous and discontinuous. Continuous silk can be obtained by using a clean cloth or stainless steel brush through continuous horizontal linear friction on the surface of the aluminum plate. Change the diameter of stainless steel brush wire, can obtain different thickness of grain. Intermittent silk is usually processed in a brush or wipe machine. Production principle: Two sets of differential wheels rotating in the same direction are adopted. The upper group is a rapidly rotating grinding roller, and the lower group is a slow rotating rubber roller. When aluminum or aluminum alloy plates pass through the two sets of rollers, they are brushed with fine and intermittent straight lines.

2. Random wire drawing is a kind of irregular and non-obvious matte silk pattern obtained by moving the aluminum plate around and around under the copper wire brush at high speed. This kind of processing, aluminum or aluminum alloy plate surface requirements are higher.

3, the ripples are generally made in the brush or wipe machine. By using the axial motion of the grinding roller, the surface of the aluminum or aluminum alloy plate is rubbed to get the wavy pattern.

4. Spiral drawing process, also known as optical rotation, is a kind of silk pattern obtained by rotating polishing on the surface of aluminum or aluminum alloy plate by using cylindrical felt or stone nylon wheel mounted on the drill press and kerosene and polishing ointment. It is used for circular signs and small decorative dial decorative processing.

5, thread is a small motor equipped with circular felt on the shaft, fixed on the table, and the table edge into about 60 degrees of Angle, in addition to make a fixed aluminum plate press tea, on the drag board attached a straight polyester film edge to limit the thread race. By using the rotation of the felt and the straight line movement of the drag plate, the thread lines of the same width are created on the surface of the aluminum plate