Five methods of metal polishing

What is metal polishing?
Metal polishing is a process of removing the rough parts of the metal surface by physical or chemical methods to make the surface smooth and flat. Here are some common metal polishing methods:

How to polish metal?

1. Mechanical polishing: Mechanical polishing is a process that improves the surface quality of the workpiece by physical means. It uses flexible polishing tools and abrasives (such as polishing powder) to grind and roll the surface to remove the rough layer, thereby reducing the surface roughness and improving the finish. This method is suitable for a variety of materials and is especially common in metal processing. Mechanical polishing includes a variety of specific techniques, such as sandblasting, abrasive flow polishing and extrusion polishing, each of which is targeted at different workpiece shapes, sizes and surface treatment requirements. For example, sandblasting can effectively clean and change the surface roughness of the workpiece, while abrasive flow polishing is good at deburring and polishing complex shapes and tiny parts. Extrusion polishing is usually polished with a polishing wheel and polishing wax. It is a polishing process that applies pressure while the workpiece is in contact with the abrasive medium. It is usually used to achieve high-precision and uniform polishing on flat or curved surfaces. This is the most common polishing method, which mainly uses abrasives and polishing wheels to grind and polish metal surfaces. This method is suitable for various metal materials, but it may leave fine scratches on the metal surface.

2. Chemical polishing: This method mainly uses acidic or alkaline solutions to corrode and dissolve the metal surface to remove the rough parts of the surface. This method can obtain a very smooth surface, but it may cause certain corrosion to the metal.

3. Electrolytic polishing: This method mainly uses the principle of electrolysis to produce a large number of hydrogen bubbles on the metal surface to peel off the rough parts of the metal surface. This method can obtain a very smooth surface, but the equipment is complex and the cost is high.

4. Ultrasonic polishing: This method mainly uses the vibration effect of ultrasound to produce high-frequency vibrations on the metal surface to peel off the rough parts of the metal surface. This method can obtain a very smooth surface, but the equipment is complex and the cost is high.

5. Laser polishing: This method mainly uses the high energy of the laser to generate high temperature on the metal surface to evaporate the rough parts of the metal surface. This method can obtain a very smooth surface, but the equipment is complex and the cost is high. The above are some common metal polishing methods. The specific method to be selected needs to be comprehensively considered according to factors such as the type, shape, size and polishing requirements of the metal.