I believe many people know what metal is? Metal is a magnetic substance formed in nature. There are many types of this substance. Some metals can be used to make furniture products, and some metals can be used to Make jewelry. Most metals need to be polished and polished during processing. When metal is polished and polished, professional polishing and grinding equipment is generally used. Do you know what the uses of metal polishing and grinding equipment are? Now the editor will introduce it to you in detail.
Metal grinding and polishing technology
1. Mechanical polishing
Mechanical polishing relies on cutting and plastic deformation of the material surface to remove the polished convex parts to obtain a smooth surface. Polishing methods generally use oilstone strips, wool wheels, sandpaper, etc., and are mainly manual operations. For special parts such as the surface of the rotary body, auxiliary tools such as turntables can be used. For those with high surface quality requirements, ultra-precision grinding and polishing methods can be used. Super-precision polishing uses special abrasives, which are pressed against the surface of the workpiece to be processed in a polishing fluid containing abrasives to perform high-speed rotation. This technology can achieve a surface roughness of Ra0.008μm, which is the highest among various polishing methods. This method is often used for optical lens molds.
2.?Chemical polishing?
Chemical polishing is to allow the microscopic convex parts of the surface of the material to be dissolved preferentially in the chemical medium than the concave parts, thereby obtaining a smooth surface. The main advantage of this method is that it does not require complex equipment, can polish workpieces with complex shapes, and can polish many workpieces at the same time, with high efficiency. The core issue of chemical polishing is the preparation of polishing fluid. The surface roughness obtained by chemical polishing is generally several 10 μm.
3.?Electrolytic polishing?
The basic principle of electrolytic polishing is the same as that of chemical polishing, that is, it relies on selective dissolution of tiny protrusions on the surface of the material to make the surface smooth. Compared with chemical polishing, the influence of cathode reaction can be eliminated and the effect is better. The electrochemical polishing process is divided into two steps: (1) Macroscopic leveling? The dissolved products diffuse into the electrolyte, and the geometric roughness of the material surface decreases, Ra>1μm. (2) Glimmer and smooth? Anodic polarization, surface brightness is improved, Ra<1μm.
4. Ultrasonic polishing
Put the workpiece into the abrasive suspension and place it together in the ultrasonic field. Relying on the oscillation of ultrasonic waves, the abrasives grind and polish the surface of the workpiece. The macro force of ultrasonic processing is small and will not cause deformation of the workpiece, but the production and installation of tooling is difficult. Ultrasonic processing can be combined with chemical or electrochemical methods. On the basis of solution corrosion and electrolysis, ultrasonic vibration is applied to stir the solution to separate the dissolved products from the surface of the workpiece and make the corrosion or electrolyte near the surface uniform; the cavitation effect of ultrasonic waves in the liquid can also inhibit the corrosion process and facilitate surface brightening.
5.? Fluid polishing? Fluid polishing relies on high-speed flowing liquid and the abrasive particles it carries to wash the surface of the workpiece to achieve the purpose of polishing. Commonly used methods include: abrasive jet machining, liquid jet machining, fluid power grinding, etc. Fluid power grinding is driven by hydraulic pressure, which causes the liquid medium carrying abrasive particles to reciprocate across the workpiece surface at high speed. The media is mainly made of special compounds with good flow properties under lower pressure and mixed with abrasives. The abrasives can be silicon carbide powder.
6.? Magnetic grinding and polishing? Magnetic grinding and polishing uses magnetic abrasives to form an abrasive brush under the action of a magnetic field to grind the workpiece. This method has high processing efficiency, good quality, easy control of processing conditions, and good working conditions. Using appropriate abrasives, the surface roughness can reach Ra0.1μm.
Most metals will have a better effect after polishing. Metal polishing can make the metal surface smoother and more beautiful. Most furniture products and jewelry metals will be processed and polished. Listed for sale. There are many instruments and equipment used to polish metal and their working principles are different. When we choose different machines and equipment, we must start from its principles. There are many manufacturers of metal grinding and polishing machinery. You can choose the manufacturer according to the type.
Tubatu provides you with "each decoration quotation, 1-4 local decoration companies, 3 sets of decoration design plans" for free online, as well as decoration avoidance strategies! Click this link:/yezhu/zxbj-cszy.php?to8to_from=seo_zhidao_m_jiare&wb, and you can get it for free~