Layered solid manufacturing The foil of hot melt adhesive is painted on one side, and the parts are heated. In this way, the foil and the surface of the part can be bonded together, and then the data information of CAD layered model can be obtained. Then, the gambling...
Due to the characteristics of semi-solid slurry, semi-solid forming has the following natural advantages over other casting methods (1) In traditional liquid die casting, due to the low viscosity of liquid slurry, the flow front is easy to lose stability in the filling process, which leads to the flow...
With low carbon and low alloy steel zg14crmnsini, the wear resistance and hardness of bucket teeth are improved by advanced liquid die forging technology. A set of production process and equipment scheme of liquid die forging are designed, which can significantly improve the service life of bucket teeth. The...
The long-term practice of domestic and foreign researchers has proved that the liquid die forging process has many advantages that the forming process does not have, such as high mechanical properties, generally without shrinkage porosity and shrinkage cavity, the material structure is dense and uniform, the grain size is...
In the 1940s, V. paschkis of Columbia University in the United States used a large-scale computer to simulate the heat conduction and heat flow in the process of casting solidification. In 1962, Danish scholar K. forsund et al. First tried to use the finite difference method to calculate the...
Casting is the process of melting metal into a liquid that meets certain requirements and pouring it into the mold. After cooling, solidification and cleaning treatment, the castings with predetermined shape, size and performance can be obtained. Casting is one of the basic processes of modern mechanical manufacturing industry....
★ 4.1 cast alloy materials Aiming at strengthening and toughening, lightening, precision and high efficiency, new cast iron materials are developed; ADI heat treatment equipment is mainly developed, national standards are formulated as soon as possible, and new technologies of ADI are popularized (such as interrupted heat falling sand...