Survey Effect Of Deoxidation Of Simple Carbon Steel Feeding In Sand Mold

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Morshed, Sobhan | 2009

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 40109 (07)
University: Sharif University of Technology
Department: Materials Science and Engineering
Advisor(s): Davami, Parviz; Varahram, Naser
Abstract:
Prevent shrinkage and porosity in the melting parts expensive attention has been cast as a piece of low cost healthy and free from defects in casting production. Calculated feeding distance and the required number of risers. Also ensure that more tests were done with computer simulation compared the results acceptable to have the cast and expensive to produce a piece has nearly no troubleshooting. Variety of factors can affect the riser effect is melting parts Read some of these factors include alloy melting, superheat and mold .... . Oxygen factor in the project as one of the molten factors between feeding distance for molten plain carbon steel melting components and parts reviews and porosity value of the three samples between the riser to sample with imagj software was determined and results of computer simulation and location of the occurrence of porosity was compared using criteria Niyama, sut and cooling curve of casting were compared in different pieces. Practical experiments to prove the point that risering without deoxidation in the steel work is vain and deoxidations of calcium Silica stronger than aluminum is capable.
Keywords:
Oxygen Scavenger ; Risering ; Carbon Steels ; Casting