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ISSN : 1229-6783(Print)
ISSN : 2288-1484(Online)
Journal of the Korea Safety Management & Science Vol.15 No.4 pp.179-184
DOI : https://doi.org/10.12812/ksms.2013.15.4.179

사형제품 기계가공을 위한 안전금형 개발에 관한 연구

최 재 훈*, 남 승 돈*
*유한대학교 금형설계과

A Study on Development of Safety Shell Molds for Precision Machining of Sand Mold Casting Product

Jae-Hoon Choi*, Seung-Done Nam*
*Department of Tool & Mold Engineering, Yuhan University
Received October 17, 2013; Revision Received November 1, 2013; Accepted November. 1, 2013.

Abstract

An accident from machine work is often fatal to the worker. This accident is mostly preventable throughperfect process jig. In case of this machine work, however, the disaster frequently occurred because of thedesign which is not considered the beginning of product design, post-process and mass process of production.As for sand casting method, this has the merits of the production; the product is easily produced by manuallabor. On the other hand, this method has the demerits of a bigger dimensional error contrary to other massprocess of production. When the sand casting product is in machine work, there are various problems such asunsafe fix and excessive cutting, product desorption and rapid life depreciation of equipment and tools.Considering the characteristics of sand casting method, it is accepted as difficulty to improve the problems. Inthis study, it suggests shell mold method for mold instead of the machine work after the sand casting of thecircle shape container product. And the surface accomplishes the following average of surface roughness Ra9.94㎛ of machine work with the casting of flask mold by shell mold method. In accordance with the simplificationof processing process and reducing the average thickness variation by mass production of product with detailedappearance, it has a good influence on safety accident prevention caused by production and damaged product. Itis confirmed that making higher degree of size precision of all machine work product is possible to increasethe safety and productivity, reduce the processing process and improve environment.
Safety mold design,Shell mold,Sand casting,Flask mold.
0060-01-0015-0004-22.pdf873.6KB

Reference

1.E. F. Boultbee and G. A Schofield (1981) : “Typical Microstructure of Cast Metals”, The Inst. of British Foundrym., p.174~177,
2.Chun-pyo Hong, (1997) “Castings Solidification”, ITC book
3.Jong-Chan Lee, S. Kang “Modern manufactu ring processes” (2001) Munwoo Book
4.Industrial Accidents Statistics, 2010
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