The production process, application and notice of metal mould casting
3) working temperature of metal mould. Similarly, the metal working temperature and the temperature difference of each part play an important role in the cooling temperature field of the casting. The forced water cooling and air cooling in the metal type partial overheating area is to ensure the normal working temperature in the area, to improve the production efficiency, and to eliminate the overheating and ensure the normal cooling temperature field. The metal working temperature control is more advanced and effective means to control the cooling water outlet temperature, outlet temperature * cooling cycle water cycle speed adjustment. Such as Italy Fata company and the French Sifa company design and manufacture of metal type, have advanced water, wind cooling device. In addition, the local hot spot can be inlaid with thick or high thermal conductivity metal inserts a large amount of storage or adjusting the thickness of coating layer and coating type to ensure the cooling temperature gradient reasonable casting forming, eliminate local shrinkage defects (hole).
(1) the key to the design of the metal mold casting process is the determination of the casting position, the design of the pouring system and the control and adjustment of the working temperature of the die. L) pouring position of casting. It is directly related to the type of metal core and type the number, position, the liquid metal into the exhaust patency and metal structure complexity, easy and difficult to determine the temperature distribution of casting metal processing and operation, thereby affecting the casting production efficiency, quality, dimensional accuracy etc.. Therefore, the pouring position of casting is an important link in the design of casting process.
