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Optimization of the Chemical Analysis SS-EN-GJL-250 Using Casting Simulation Software
Jönköping University, School of Engineering, JTH, Mechanical Engineering.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The main purpose of the thesis work is based on achieving same mechanical properties on the three different sized bearing housings. The key mechanical property that had to be focused on was the hardness of the parts. In order to achieve this goal, chemical compositions of the parts have studied. However there were some limitations on the composition variants. Allowed variables of the compositions are silicon, nickel and copper. Due to necessity another element, Molybdenum (Mo), was also introduced. After many simulations three different compositions are proposed. Then the feasibility of results of casting simulation software investigated. And finally an optimization guideline has proposed. Chemical composition researches have carried on casting simulation software, which is called Magma5. Following the completion of the simulations phase, proposed compositions trial casted at the company. Subsequent to trial castings cast parts had tested for their hardness values. In order to bring the thesis to completion simulation outputs and trial test results had compared. With the help of a casting simulation software composition optimisation of different sized parts could be easily optimised in order to achieve same results. Many simulations are executed with different composition for the silicon, nickel, copper and molybdenum variants. It was seen that Mo additions significantly increase the mechanical properties of the parts. Nickel and copperacts similarly on the hardness values, however nickel addition reduce undercooling tendency at a greater rate. Good inoculation is vital for the parts with thin sections. Decent inoculation helps to improve the microstructure and helps to get closer results tothe simulated values. However software represents key information aboutundercooled zones on the part. Software ensures 95% to 97% correct values on hardness results.

Place, publisher, year, edition, pages
2011. , 100 p.
Keyword [en]
Grey Cast Iron, Alloying Elements, Hardness, Tensile Strength, Silicon, Copper, Nickel, Molybdenum, Inoculation
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:hj:diva-15904OAI: oai:DiVA.org:hj-15904DiVA: diva2:436638
Subject / course
JTH, Mechanical Engineering
Uppsok
Technology
Supervisors
Examiners
Available from: 2011-08-25 Created: 2011-08-24 Last updated: 2011-08-25Bibliographically approved

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MSc Thesis Yucel Kasap(8145 kB)1808 downloads
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CiteExportLink to record
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