Imported tungsten steel die surface quality is good, depends on the die finishing

The surface finishing of imported tungsten steel die is one of the difficult problems that can not be solved well in the die processing, which is also one of the reasons why the die pliers work hard and become the bottleneck of the die processing. It is especially reflected in the Z - after assembly process of metal and die casting mold with high hardness. Our country is still mainly based on manual polishing, not only the quality is unstable, long period, and workers' work environment is poor, which restricts the development of casting mould to a higher level.

For the surface finishing of the complex cavity and some slit of the imported tungsten steel die, the traditional machining method is no longer competent, so other technological measures must be adopted, such as electrochemical or electrochemical mechanical finishing technology.

With the continuous development of science and technology, the processing technology requirements of various molds are more and more high. It is urgent to improve the speed and quality of mould polishing to make our mould manufacturing technology reach the world advanced level.

In the die surface finishing technology, the main can be divided into two parts, namely traditional finishing technology and non-traditional finishing technology. The traditional finishing technology is mainly hand grinding and polishing and the mechanical finishing developed now. The non-traditional finishing mainly includes chemical polishing, electrochemical polishing, electrolytic grinding, electrochemical mechanical finishing, ultrasonic machining, magnetorheological polishing, laser polishing technology and EDM polishing, etc.

Imported tungsten steel die grinding and polishing will develop towards automation and intelligence. Numerical control grinding machine has been developed in Japan, which can realize automatic grinding and polishing of 3D curved mold. In addition, due to the complex shape of the mold cavity, any grinding and polishing method has some limitations. Attention should be paid to the development of special grinding and polishing methods, such as extrusion grinding, electrochemical polishing, ultrasonic polishing and composite polishing process and equipment, in order to improve the quality of the die surface.

With the development of the mold to the direction of precision and large size, the super finishing technology with the machining accuracy of more than 1mm and the composite processing with the integration of collecting, chemical, ultrasonic, laser and other technologies will be developed. The composite processing technology with two or more process characteristics has a broad prospect in the future die manufacturing.