การออกแบบระบบจ่ายน้ำโลหะและรูล้นสำหรับงานหล่ออะลูมิเนียม

Design of Gating and Riser System for aluminium Casting

Name: ศุภฤทธิ์ ล้วนโกศลชัย

Name: Supparit Lounkosonchai

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี. คณะพลังงานสิ่งแวดล้อมและวัสดุ. สายวิชาเทคโนโลยีวัสดุ

keyword: การออกแบบงานหล่อ

Abstract: Design of gating and riser systems for casting are traditionally based on experience and trial and error. These methods results in a lot of waste in both time and money as one needs to optimize the design by experiments with real castings until they are sound. Information Erom such trial and error can not be used for future reference. A casting design specialist, which is rare and hard to find, is required to do the job properly. In recent years, a number of casting simulation softwares have been developed for foundry industry. Deciding whether to use casting simulation softwares or not is a major problem for Thai foundry industry. This is because the software are generally excessively expensive and the benefits to specific firms are not clear. The purpose of this thesis are to study the traditional method of design of gating and riser system for aluminium casting and to apply casting simulation software for analysis and optimization of the design. The simulation software to be used is MAGMASOFT. The procedures employed were as follows: Firstly, checking thermophysical properties of materials in MAGMASOFT database using cylindrical casting as a test piece. The data were validated by temperature change during solidification and subsequent cooling and shape of shrinkage. This was followed by the analysis of real casting which was dumbbell. Good agreement between simulated and experiment results was observed. The casting alloy was aluminium A356 and the casting process was green sand casting. Simulation of commercial aluminium wheel casting, employing low pressure die casting showed that the prediction of solidification shrinkage agreed with those found in real casting. It was also found that those areas with turbulent metal flow corresponded to the areas with high porosities in real castings. Defects could be avioded if proper modifications of the dies are made. The results of this thesis showed that the casting simulation software and the database can be used to predict the shape of shrinkage accurately. Regions of high porosities could also be predicted. Consequently, they can be used to optimize casting design in order to reduce the defects. It is concluded that simulation software could be used to analyze and optimize casting design correctly and quickly.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี. สำนักหอสมุด

Address: กรุงเทพมหานคร

Email: info.lib@mail.kmutt.ac.th

Name: ปัญญา ศรีจันทร์

Role: อาจารย์ที่ปรึกษา

Name: เชาว์ เนียมสอน

Role: อาจารย์ที่ปรึกษา

Created: 2544

Issued: 2007-01-19

Modified: 2007-03-12

วิทยานิพนธ์/Thesis

ISBN: 9745949279

CallNumber: MT133

tha

DegreeName: วิศวกรรมศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: เทคโนโลยีวัสดุ

Grantor: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

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