Effect of Multi-gating System on Solidification of Molten Metals in Spur Gear Casting: A Simulation Approach

Casting process is widely used in preparing spur gear blanks or in complete production of gears because of its less defect at the end of the process. The importance of the gating system in casting process lies in its ability to channel molten metal into the mould cavity within the allowable period at a controlled parameter. The study therefore investigated the effect of increasing the gating system on the solidification of molten metal during gear cast to determine the time of solidification and casting productivity. Both the top and bottom gating system were modelled in solidwork, while the simulation was done using Pro-Cast. The result revealed that for the case of two runner gating system, both the top and bottom gating system took 9.195 and 9.320 s respectively, to fill the mould cavity. However, the three-runner gating system took a shorter filling time with top gating system having 8.824 s filling time and the bottom gating system took about 9.655 s to fill the mould cavity. The outcome showed that the top gating system tends to discharge molten metal faster than the bottom gating system as seen from the filling time of both the two and the three-gating system

Queueing Theory an Index Factor for Production Inventory Control in Automotive Industry—A Review

In this paper, various approaches to inventory control within the automotive industry were reviewed using queueing theory. Different models used in past literature were stated and the model considered to be most effective in this review is dock management modeling. This model was used to analyze inventory control and how effectively automotive industries can minimize inventory by getting the component needed in the assembly line just in time, this helps to reduce additional costs for warehouse maintenance and capital tied down in form of excess inventory. Analytical and simulation models are the mathematical models that are considered in this review as they are used in several papers by different authors