1. The commonly used tools for mold polishing are: sandpaper, oil stone, velvet felt wheel, grinding paste, alloy file, diamond grinding needle, bamboo chip, fiber oil stone, circular rotation grinder.
Sandpaper: 150. Oilstone: 120
2. The surface after rough polishing through milling, EDM, grinding and other processes can be polished by a rotating surface polishing machine or ultrasonic grinding machine with a speed of 3000-400rpm. A common method is to remove the white EDM layer using a 3 mm diameter WA 400 wheel.
3. When polishing the mirror surface of the mold, you must not mess up the order, if you use fine sandpaper to polish it at the beginning, you can not grind off the coarse knife marks, although the surface of the mold looks very bright when polished out in this way, but if you look carefully, you can see a lot of coarse texture.
4. Select appropriate materials such as polishing paste, water-based oil and cutting fluid, and determine their concentration, temperature, viscosity and pH value and other technical parameters. Choose the corresponding tool according to the material to be polished: for example, copper rod can be used as a tool for copper alloy parts; Aluminum products can be selected with aluminum alloy rods as tools and so on.
5. Polishing method commonly used in aluminum alloy die-casting Mechanical polishing Mechanical polishing is a polishing method that removes the convex part after polishing by cutting, plastic deformation of the surface of the material and obtains a smooth surface.
1. The cemented carbide mold should be polished well, and the diamond polishing paste should be used for polishing, and other polishing paste cannot be thrown.
Start with a coarser polishing paste (w7 w) for polishing, after throwing away the coarse lines, and then replace the fine polishing paste for mirror polishing until the mirror effect is achieved.
2. Ultrasonic polishing. Ultrasonic polishing puts the cemented carbide into the abrasive suspension, places it together in the ultrasonic field, and relies on the oscillation of the ultrasonic wave to grind and polish the surface problems of the cemented carbide mold, which will not affect the deformation of the cemented carbide.
3. The processing methods of cemented carbide molds are as follows: CNC forming and milling process is the main process method for the processing of plastic injection molds, die-casting molds and other forming mold forming parts, especially the application of high-speed milling technology and 4-5 axis linkage processing technology, which has become the main method of modern processing technology for molded parts.
4. The grinding process is better. Although hard material machining cannot completely replace grinding, it can replace a considerable part, especially when the length and diameter of the workpiece are relatively small and the shape is more complex.
5. Cemented carbide machining, the first thing that has to be introduced is abrasive grinding. The abrasive grinding method can be used to machine molds and cutting tools.
Green silicon carbide grinding wheels are often used for grinding cemented carbide. Boron carbide or diamond powder are mostly used for grinding and polishing. The advantages of cemented carbide abrasive grinding are: small machining allowance and high machining accuracy.
6. Why Tungsten Carbide Surfaces Need Polishing Technology One of the biggest challenges facing modern materials is machining. For example, composites are highly abrasive, while titanium is a long-chipping material with very poor thermal conductivity. The result is a very high temperature on the cutting edge of the tool, which leads to significant tool wear and thus shorter tool life.