Friends who have been in contact with the building materials industry should know that brushed aluminium effect is a commonly used architectural decorative material in daily life and occupies a very important position in the decoration industry. Below, Haomei Aluminum will elaborate on the processing methods of brushed effect aluminum sheet.
Brushed aluminum sheet adopts brushing process on the basis of ordinary aluminum sheet, by the external force of the drawing die, the cross-section of the aluminum sheet is subjected to external force friction compression. After multiple processes such as drawing, it forms a super strong metal texture with excellent adhesion and weather resistance. Brushed effect aluminium sheet has a strong sense of reality, three-dimensionality, realistic effect, clear texture, and unique and wear-resistant pattern.
Processing methods of brushed aluminium effect:
The drawing treatment of brushed finish aluminum sheet is done after stamping. The drawing process generally includes mechanical drawing, chemical drawing, electrochemical drawing, etc. It can be made into various patterns such as straight lines, random lines, spirals, corrugations, and swirls according to decorative needs. The processing steps of brushed aluminum sheet mainly include aluminum single board drawing, sheet metal processing, washing and degreasing, and surface baking.
(1) Straight-line brushing
It refers to the method of processing straight lines on the surface of aluminum sheet by mechanical friction. It has the dual functions of removing scratches on the surface of aluminum sheet and decorating the surface of aluminum sheet. Among them, there are two ways of continuous brushing and intermittent brushing in straight-line brushing.
(2) Random pattern brushing
By moving the aluminum sheet back and forth under the copper wire rotating at high speed, a irregular and inconspicuous matte line pattern is obtained. This processing requires higher surface requirements for the aluminum sheet.
(3) Corrugated pattern brushing
It is generally carried out on a brushing machine or a stippling machine. Using the axial movement of the upper set of grinding rolls, the surface of the aluminum sheet is brushed to form a wave-shaped pattern.
(4) Swirl pattern brushing
Using cylindrical felt or corundum nylon wheel mounted on a drill press, rotating polishing is performed with kerosene and polishing paste to obtain a silk pattern on the surface of the aluminum sheet. It is mostly used for decorative processing of circular signs and small decorative dials.
(5) Thread pattern brushing
A small motor with a round felt installed on the shaft is fixed on the workbench, and is inclined at about 60 degrees to the edge of the workbench. Another dragging plate with a fixed aluminum sheet is used, and a polyester film with a straight and uniform edge is pasted on the dragging plate to restrict the thread pitch. By using the rotation of the felt and the linear movement of the dragging plate, a thread pattern with consistent width is polished on the surface of the aluminum sheet.
(6) Cross pattern brushing
Generally processed on a brushing machine or a stippling machine, the brushed aluminium effect sheet passes through two sets of roller wheels, and the crossed pattern is pressed on the surface of the aluminum sheet.