1.Coloring: The common coloring methods for aluminum alloys are oxidation, painting, powder spraying and electroplating. For zinc alloys, zinc alloys are difficult to oxidize and color. Generally, the common coloring methods are electroplating and blackening, which are mainly used. Chemical metal surface treatment agent, such as zinc alloy blackening agent, used for zinc plating and zinc alloy passivation, the passivation film is black, suitable for hanging plating, barrel plating, screws, automobile motorcycle accessories, etc.

2. Brushing: It is a surface treatment method that forms line patterns on the surface of the workpiece by grinding products to play a decorative effect. 

There are mechanical drawing methods: Flat-pressed abrasive belt drawing is suitable for drawing in small areas. The lines on the surface of this drawing are usually straight lines of continuous lines; Wide belt drawing is the most traditional drawing method, used for flat drawing, especially suitable for sheet processing; The polishing machine is brushed, the nylon wheel is driven by the speed of the machine, and the product is polished by manual technology, which is suitable for irregular plating products.

3. Polishing: refers to the processing method that uses mechanical, chemical or electrochemical effects to reduce the surface roughness of the workpiece to obtain a bright and flat surface.

Mechanical polishing, using oil stone strips, wool wheels, sandpaper, etc. to carefully polish on the surface of stainless steel, can be used together with the turntable. 

Chemical polishing, mainly using some metal surface treatment agent, metal process liquid treatment, for zinc alloy polishing, zinc alloy chemical polishing agent, etc.

Ultrasonic polishing, placing the stainless-steel tube and abrasive liquid in the ultrasonic field, can also be combined with chemical or electrochemical methods. The cavitation of ultrasonic waves in the liquid can also inhibit the corrosion process, which is beneficial to the surface brightening.

Above is the common surface finish for zinc alloy porotypes. Welcome to contact us at enquiry@nice-rapidtooling.com to get more information about rapid prototyping or to get a free quote. Looking forward to your enquiry!