Machine tool castings have also become a large castings, is the flagship of the river cast Heavy Industries, we produced the machine tool castings have good wear resistance, shock absorption performance, good process performance characteristics. High quality and long service life.
The characteristics of machine tool casting is:
As graphite in cast iron is conducive to lubrication and oil storage, so good wear resistance. Also, the elimination of shock due to the presence of graphite is superior to steel. Because of the high carbon content of gray cast iron, close to the eutectic composition, so the lower the melting point, good fluidity, shrinkage rate is small, so suitable for casting complex or thin-walled castings. In addition, the machinability of gray cast iron is superior to that of steel due to the tendency of chip formation during cutting.
Heat treatment of machine tool castings: bed castings products as a large castings must be heat treated to improve their own performance, improve the inherent quality of cast iron castings. Metal heat treatment is one of the important processes in mechanical manufacturing. Compared with other processing technologies, heat treatment generally does not change the shape of the workpiece and the overall chemical composition, but by changing the internal microstructure of the workpiece or changing the chemical composition of the workpiece surface , Give or improve the performance of the workpiece. Its characteristic is to improve the inherent quality of the workpiece.