Masters Theses

Abstract

"To produce successful castings, processing variables and their effects on mold filling and solidification must be well understood. The effects of processing variables such as metal pouring temperature, pressure head, and gating area are well known for conventional casting methods, such as green sand casting, but they cannot be applied directly to the evaporative pattern casting (EPC) process. Further development of the EPC process depends on an increased knowledge of the complex interactions of these variables and their effects on mold filling and solidification.

The mold fill times and solidification of both iron and aluminum castings were recorded by attaching thermocouples to cone-shaped patterns. The metal pouring temperature, pressure head, and gate area were systematically varied to determine their effects on mold fill time and solidification. The filling times were accurately measured using a computer and cooling curves of the castings were recorded on strip charts.

The data from each casting were compared to the processing variables and their effects determined. The results show that increasing metal pouring temperature or pressure head decreases the total fill time of the casting, but changing the gate area does not have a significant effect. Solidification of the casting was not affected by the variables, but solidification differed from solidification in conventional castings"--Abstract, page iii.

Advisor(s)

Askeland, Donald R.

Committee Member(s)

Wolf, Robert V., 1929-1999
Ramsay, Christopher
Culp, Archie W., Jr.

Department(s)

Materials Science and Engineering

Degree Name

M.S. in Metallurgical Engineering

Publisher

University of Missouri--Rolla

Publication Date

Fall 1990

Pagination

viii, 58 pages

Note about bibliography

Includes bibliographical references (Pages 54-57).

Rights

© 1990 Jerald Alan Smith, All rights reserved.

Document Type

Thesis - Restricted Access

File Type

text

Language

English

Thesis Number

T 6166

Print OCLC #

23349519

Link to Catalog Record

Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.

http://laurel.lso.missouri.edu/record=b2305319~S5

Share My Thesis If you are the author of this work and would like to grant permission to make it openly accessible to all, please click the button above.

Share

 
COinS