摘要:Gy the aid of SEM and EPMA, the performance of composite modifier, K2TiF6+NaBF4 + NaF+NaCl, on hypoeutectic Al-Si-Cu alloy has been investigated, The results show not only that a satisfactory modified structure is obtained, but also that the modifier is a nice long-life additive.
摘要:The distribution of chemical composition and microstructure for cracking socket of centrifugal cast ductile iron pipe,and the effect of them on the cracking behavior have been studied.
摘要:The decarburization for carbon steel investment casting was studied referring to metalograph, microharbness and computer image analysis. The temperature range of decarburization and the preventive methods were also discussed.
摘要:The paper studied the properties of collidal silica sol made by simple substance silicon dissolving method. The results show that the quality of the collidal silica sol is about the same as those of high quality Collidal silica sol made in Japan.
摘要:The connection mechanism of new developed bimetallic centrifugal cast roll with three-layer structure has been studied. The out-layer material of roll is high chromium cast iron,both the middle-layer and inner-layer material are grey cast iron. It has been found that the interface between high chromium cast iron (outer-layer) and grey cast iron (middle-layer) is composed of a dechromiumized layer (transition zone) and a connection zone, there is a decarbonized zone in the middle grey cast iron layer near the interface between this layer and the inner grey cast iron layer.
摘要:The language of TURBO-PROLOG has been applied to work out the expert system for design of process parameters in die casting and identification of defects, which can be run on IBM-PC or its series. Large amount of data about machines, alloys, process parameters and evaluation of products quality had been gathered, and then, the method of various design ways besed on trains of thought of manual design and automatic search by computer itself has been developed,moreover, the function of language of expert system has been applied so as to have a result of synthesized optimization. Applied in several factories,it shows that the system has a reliable practical value and is helpful to identify and solve the problems rapidly during die casting process.
关键词:Die Casting;Process Parameters;Identification of defects;Expert System