In the manufacturing process of titanium alloy molds, the smooth processing and mirror processing after shape processing are called part surface grinding and polishing, 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 enhancing product quality. Today, I will share with you some relevant knowledge about polishing titanium alloy targets.

Common polishing methods and working principles for titanium alloy targets

1. Mechanical polishing of titanium alloy targets

Mechanical polishing is a polishing method that uses cutting or plastic deformation of the material surface to remove the protrusions on the workpiece surface and obtain a smooth surface. It generally uses oilstone strips, wool wheels, sandpaper, etc., and is mainly operated manually. For surfaces with high quality requirements, ultra precision polishing can be used. Ultra precision polishing is the use of specially designed grinding tools, which press tightly on the 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. Optical lens molds often use this method. 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 dissolves the surface micro protruding parts and concave parts 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. Electrolytic polishing of titanium alloy targets

The basic principle of electrolytic polishing is the same as chemical polishing, which relies on selectively dissolving small protrusions on the surface of the material to make the surface 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 processing method that uses tool cross-sections for ultrasonic vibration to polish brittle and hard materials through abrasive suspension. Put the workpiece into the abrasive suspension and place it together in the 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 fixtures.

5. Fluid polishing of titanium alloy targets

Fluid polishing is achieved by flushing the surface of a workpiece with flowing liquid and its carried abrasive particles. Fluid dynamic grinding is driven by hydraulic pressure, and the medium is mainly made of special compounds (polymer like substances) with good flowability at lower pressures and mixed with abrasives. The abrasives can use silicon carbide powder.