Why are knobs brushed metal?

In recent years, more and more products have used the metal wire drawing process for the metal shell to play a beautiful and anti-erosion effect, making products with elements of fashion and technology. This is one of the reasons why the craft is so popular. So, do you know what is brushed metal?

What is metal wire drawing?

Metal wire drawing is the manufacturing process of repeatedly using sandpaper to scrape the aluminum plate out of the line. The process is divided into three parts: deesterification, sand mill, and water washing. In the wire drawing process, the special film technology after anodizing can make a film layer containing the metal component on the metal surface, and clearly show every fine wire mark, so that the metal matte shines with fine hair luster.

What are the drawing methods of metal wire drawing?

The way of wire drawing is mainly divided into straight, random and swirl.

1️⃣Straight grain drawing refers to processing straight lines on the surface of the aluminum plate by mechanical friction. It has the dual function of brushing off scratches on the surface of the aluminum plate and decorating the surface of the aluminum plate.

Straight grain wire drawing is divided into continuous wire grain and intermittent wire grain.

• The continuous silk pattern can be obtained by rubbing the surface of the aluminum plate continuously horizontally and straightly with a scouring pad or a stainless steel brush (such as manual grinding under the condition of a device or using a planer to clamp a wire brush on the aluminum plate). By changing the diameter of the steel wire of the stainless steel brush, different thicknesses of lines can be obtained.

• Intermittent silk lines are generally processed by brushing machine or rubbing machine. Making principle: two groups of differential wheels rotating in the same direction, the upper group is the fast rotating roller, the lower group is the slow rotating rubber roller, aluminum or aluminum alloy plate through the two groups of roller wheels, is brushed out fine intermittent straight lines.

2️⃣Random wire drawing is a kind of irregular and non-obvious matte silk pattern obtained by moving the aluminum plate back and forth, left and right, and rubbing under the high-speed copper wire brush. This kind of processing has higher requirements on the surface of the aluminum or aluminum alloy plate.

The corrugation is generally produced on a brushing machine or a wiping machine. Using the axial movement of the upper set of grinding rollers, the surface of the aluminum or aluminum alloy plate is brushed to obtain a wave pattern.

3️⃣Swirl 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 by using cylindrical felt or nylon wheel for stone grinding on a drilling machine, mixing polishing ointment with kerosene. It is mostly used for decorative finishing of circular signs and small decorative dials.

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