Straight-grain wire drawing die refers to processing straight lines on the surface of aluminum plate by mechanical friction. It has the dual function of removing scratches on the surface of the pin plate and decorating the surface of the aluminum plate. There are two types of straight wire drawing: continuous wire and intermittent wire. The continuous silk pattern can be obtained by using a white clean cloth or a small rust steel brush by continuous horizontal straight-line rubbing on the surface of the pin plate (such as manual grinding under the condition of existing equipment or using a planer to clamp the wire brush on the aluminum plate). By changing the wire diameter of the small rusty steel brush, a pattern of the same thickness can be obtained. Intermittent silk patterns are generally processed on brushing machines or rubbing machines. Production principle: Two sets of differential wheels rotating in the same direction are used. The upper set is a fast-rotating grinding roller, and the lower set is a slow-rotating rubber roller. The aluminum or aluminum alloy plate passes through the two sets of rollers and is brushed out. The fine and intermittent nine-grain, chaotic squiggling is a kind of irregular and non-obvious matte silk pattern obtained by moving the guide plate back and forth and left and right under the high-speed copper wire brush. This kind of processing has higher requirements on the surface of aluminum or aluminum alloy plate

　　The corrugation is generally made on a brushing machine or a rubbing machine, and the surface of the aluminum or aluminum alloy plate is rubbed by the axial movement of the upper group of grinding rollers to obtain a corrugated pattern.

　　 Swirl is also called optical rotation. It is a kind of silk pattern obtained by using cylindrical felt or grind nylon wheel to install on a drilling machine, blending and polishing ointment with kerosene, and rotating and polishing the surface of pin or pin alloy plate. It mostly uses ten round signs and small decorative dials for wrinkle processing.