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In the manufacturing process of titanium alloy molds, the smooth processing and mirror processing after shape processing are called surface grinding and polishing of parts, which are important processes to improve the quality of molds. Mastering reasonable polishing methods can improve the quality and service life of titanium alloy molds, thereby improving product quality. Today, I will share with you some relevant knowledge about polishing titanium alloy targets.

Common polishing methods and working principles of titanium alloy targets

1. Mechanical polishing of titanium alloy targets

Mechanical polishing is a polishing method that removes the protruding parts of the workpiece surface by cutting or causing plastic deformation on the material surface to obtain a smooth surface. It generally uses oilstone strips, wool wheels, sandpaper, etc., and is mainly manually operated. For surfaces with high quality requirements, ultra precision polishing can be used. Ultra precision polishing is the use of specially designed grinding tools, which are tightly pressed onto the machined surface of the workpiece in a polishing fluid containing abrasives and perform high-speed rotational motion. By utilizing this technology, Ra0.008 can be achieved μ The surface roughness of m is the best among various polishing methods. This method is often used in optical lens molds. Mechanical polishing is the main method of mold polishing.

2. Chemical polishing of titanium alloy targets

Chemical polishing is the process in which a material preferentially dissolves the micro protruding parts of the surface in a chemical medium, resulting in a smooth surface. This method can polish workpieces with complex shapes and can simultaneously polish many workpieces with high efficiency. The surface roughness obtained by chemical polishing is generally Ra10 μ M.

3. Titanium alloy target Electropolishing

The basic principle of Electropolishing is the same as that of chemical polishing, that is, by selectively dissolving the small protruding parts on the surface of the material, the surface is smooth. Compared with chemical polishing, it can eliminate the influence of cathodic reactions and has a better effect.

4. Ultrasonic polishing of titanium alloy targets

Ultrasonic polishing is a machining method that uses tool cross-section for ultrasonic vibration to polish brittle and hard materials through abrasive suspension. Place the workpiece in an abrasive suspension and place it together in an ultrasonic field, relying on the oscillation effect of the ultrasonic wave to grind and polish the abrasive on the surface of the workpiece. Ultrasonic machining has low macroscopic force and will not cause deformation of the workpiece, but it is difficult to make and install tooling.

5. Titanium alloy target fluid polishing

Fluid polishing is achieved by flushing the surface of a workpiece with flowing liquid and its carried abrasive particles. Fluid power grinding is hydraulically driven, and the medium is mainly made of special compounds (polymer like substances) with good flowability under low pressure and mixed with abrasives, which can be silicon carbide powder.