What are the surface treatments after aluminum alloy CNC machining

Surface treatment process after aluminum alloy CNC machining

Certain operations may improve the mechanical, physical, and visual qualities of your items after aluminum alloy CNC machining. The most common procedure follows.

Beading and sandblasting

A finishing technique for aesthetic reasons is sandblasting. This method essentially removes the material and guarantees a flawless surface by sprinkling little glass beads on the machined pieces using a high-pressure air pistol. It renders metal either smooth or matte. The two major process parameters of shot peening are air pressure applied and glass bead size. Apply this procedure only in cases where the dimensional tolerance of the component is not crucial.

Other finishing techniques call for painting and polishing.

Apart from sandblasting, another technique for particle removal in a high-pressure sand stream is.

Coating

This entails covering the aluminum component with another substance, like zinc, nickel, and chromium. By use of electrochemical procedures, one might do this to enhance the component process.

Anodizing

Anodizing is an electrochemical process wherein a voltage is placed between the cathode and anode while an aluminum object is submerged in a dilute sulfuric acid solution. The method converts the exposed surface of the item into a hard, non-electrically reactive alumina coating quite successfully. The consistency of the solution, the anodizing period and the electric current determine the thickness and density of the developed coating. One may also anodize the component to provide color.

Powder coating

Using an electrostatic spray gun, the powder coating technique entails misting components with colored polymer powder. The components are then allowed to set at 200°C. Strength and abrasion resistance; corrosion resistance; impact resistance; powder coating enhances all these factors.

Heat treatment

Heat-treatment of parts composed of heat-treatable aluminum alloys helps to enhance their mechanical characteristics.