Polishing refers to the process of using mechanical, chemical, or electrochemical effects to reduce the surface roughness of a workpiece, in order to obtain a bright and flat surface. It is the use of polishing tools and abrasive particles or other polishing media to modify the surface of the workpiece.

Polishing cannot improve the dimensional or geometric accuracy of the workpiece, but rather aims to obtain a smooth surface or mirror gloss, sometimes used to eliminate gloss (extinction). Usually, polishing wheels are used as polishing tools. The polishing wheel is generally made by stacking multiple layers of canvas, felt, or leather, with metal circular plates clamped on both sides. The rim of the wheel is coated with a polishing agent composed of a uniform mixture of micro abrasive and grease.

During polishing, a high-speed rotating polishing wheel (with a circumferential speed of over 20 meters/second) presses against the workpiece, causing the abrasive to roll and perform micro cutting on the surface of the workpiece, thereby obtaining a bright machining surface. The surface roughness can generally reach Ra0.63-0.01 micrometers; When using a non greasy matte polishing agent, it can dull the bright surface to improve its appearance. When producing bearing steel balls in large quantities, the method of drum polishing is often used.

During rough polishing, a large amount of steel balls, lime, and abrasives are placed in an inclined drum. When the drum rotates, the steel balls and abrasives randomly roll and collide within the drum to remove surface protrusions and reduce surface roughness. This can remove approximately 0.01 millimeters of excess.

During precision polishing, steel balls and fur fragments are loaded into a wooden barrel and continuously rotated for several hours to obtain a dazzling and shiny surface. The polishing of precision line rulers is carried out by immersing the machined surface in a polishing solution, which is composed of a mixture of chromium oxide powder with a particle size of W5-W0.5 and an emulsion. The polishing wheel is made of uniformly fine wood or specially made fine felt that has undergone degreasing treatment. Its motion trajectory is a uniform and dense network, and the surface roughness after polishing is not greater than Ra0.01 micrometers. No surface defects can be observed under a 40 times magnification microscope. In addition, there are methods such as electrolytic polishing.

Electrochemical polishing, also known as electrolytic polishing. Electrolytic polishing is a process in which the workpiece being polished is used as the anode and insoluble metal is used as the cathode. The two electrodes are simultaneously immersed in the electrolytic cell and subjected to direct current to produce selective anodic dissolution, thereby increasing the surface brightness of the workpiece and achieving a mirror effect

Dongguan Fuding Metal Co., Ltd. was established in 2006 and is a professional factory for polishing automotive parts and processing aluminum profile products. It also provides surface treatment services for copper, aluminum, zinc, stainless steel and other hardware products such as casting, forging, die-casting, stamping, precision bending, welding, and electroplating oil spraying anodes. Based in the surface treatment industry with high requirements for product quality and integrity.

Dongguan Fuding Metal Co., Ltd

Tel: 0769-85627821

Fax: 0769-83352526

Mr. Hu: 13712216703

Q Q: 1245096259

Email: dingtai@dgdingtai.com

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