Plastic Molding Report

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Introduction Semisolid processing was first discovered at the Massachusetts Institute of Technology (MIT) in 1971 amid the study of hot tearing of steel during solidification. During modelling of this phenomenon using Sn–15 wt.% Pb using a Couette rheometer, the outcome gained was when the solid fraction increased, the viscosity also increased but in very slow rate. The mechanical stirring induced by the rheometer resulted in a spherical grain structure, which contributing for the material displaying a thixotropic behaviour. The industrial importance of this discovery was recognized immediately, and two practicable processing routes were demonstrated, ‘rheocasting’ and ‘thixocasting’. These and other related processes are now more commonly …show more content…

Table above shows the physical properties of magnesium alloy, AZ91D, which is broadly used in the commercial production. Firstly, the melting temperature is quite high compared with plastics, and secondly, the kinematic viscosity is as small as that of water. Temperature difference between the mold and slurry is quite large will cause the magnesium alloy slurry solidifies in a mold within a very short time. So, one has to mold the magnesium alloy slurry at much higher injection speed than the case of plastics, about 10 …show more content…

Features • Use of magnesium alloy chips removes need for melting furnace and allows simpler exchanging between alloys. • High-speed injection and high injection pressure improve surface quality of application and possible to make precision molding of thin parts. • Lower temperature of molten magnesium alloy can improve dimensional accuracy and mechanical properties. • Provides the precision and thin wall molding. • Fully sealed molding process enables cleaner, more secure work enviroment. • Does not produce global warming gas, such as SF6 or flux Product Details Magnesium alloyed metal is the lightest metals with functional applications, can be recycle and eco-friendly materials. The magnesium alloy injection molding machine which is developed by JSW can mold materials with the indistinguishable level of precision as plastics, and can be used to produce a broad range of components for gadgets such as cameras, mobile phones, personal computers, and others. JSW offers magnesium alloys in variety kinds of shapes to customers in a wide range of

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