Shenzhen Wuge Industrial Co., Ltd

Mechanical polishing is a commonly used method for surface treatment of nickel titanium alloy wire, mainly used to improve the smoothness of the alloy surface and reduce surface defects. Mechanical polishing is the process of removing tiny metal particles from the surface of a material through physical action using abrasives or grinding media. This process involves various mechanical actions, including grinding, pressing, and impact, where abrasive particles cause micro cutting on the surface of the material, thereby removing the surface layer and reducing surface defects.

 Nickel titanium alloy wire

1、 Dry polishing

Dry polishing is a surface polishing method performed in the absence of liquid media, mainly used to improve the smoothness of the workpiece surface and reduce defects. The main principle is that dry polishing relies on solid abrasives to physically grind the surface of the workpiece. Abrasive can be fixed on tools such as sandpaper, grinding wheels, or in a free state such as grinding powder. By the relative motion between abrasive and workpiece surface, tiny material layers are removed to achieve smoothness and improve surface quality. No liquid is added during this process, hence it is called 'dry'.

Dry polishing, as a surface treatment technique, has many advantages:

Firsty, it does not use any liquid medium, thereby reducing environmental pollution and the need for wastewater treatment, making it very environmentally friendly;

Secondly, due to the elimination of the cost of liquid medium, this method also has high cost-effectiveness and relatively simple equipment maintenance;

Finally, dry polishing is suitable for heat sensitive materials and will not damage the material due to chemical reactions or temperature effects caused by liquid media. However, this technology also has some drawbacks, such as generating a large amount of dust during the polishing process, requiring a good exhaust system to handle it. In addition, compared to wet polishing, its material removal speed on hard materials may be slower, affecting processing efficiency.

 Dry polishing process of nickel titanium alloy wire

2、 Wet polishing

Wet polishing is a widely used technique for surface treatment of metals and other materials, which uses liquid media (such as water or oil) to assist abrasives in polishing the surface of workpieces. The main principle is that wet polishing achieves the polishing effect by adding liquid media such as water or special oil during the polishing process. The main function of liquids is to act as lubricants and coolants, helping abrasives slide smoothly over the surface of workpieces and reducing the heat generated by friction, preventing workpiece overheating and damage. In addition, liquids can help suspend and remove metal shavings and impurities generated during the grinding process, maintaining the cleanliness and efficiency of the abrasive.

Wet polishing technology has several significant advantages, including improved grinding efficiency and reduced abrasive wear due to the lubricating effect of liquid media; Improved the surface quality after processing, making the surface smoother and more consistent; At the same time, the cooling effect of the liquid effectively prevents damage and deformation of the workpiece caused by high temperature. In addition, compared to dry polishing, wet polishing generates less dust during operation, is more environmentally friendly, and reduces dust and pollution issues. However, this method requires attention to the selection and management of liquids, ensuring the use of appropriate liquid media, and regular replacement to maintain polishing quality. In addition, wet polishing equipment requires regular inspection and maintenance to prevent liquid leakage and mechanical failure. During operation, good ventilation and appropriate personal protection should be ensured to prevent liquid and abrasive from causing harm to operators.

 Wet polishing process of nickel titanium alloy wire