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Master Cooling Curves of Cooling Curves on Moulding

Bulletin of the Faculty of Education, Yamaguchi University. Natural science Volume 35 Issue 2 Page 31-40
published_at 1985-09
Title
鋳造における冷却曲線の一般化
Master Cooling Curves of Cooling Curves on Moulding
Creators Tokihiro Yoshio
Source Identifiers
The following expression was assumed among the cooling time of liquid metal in mold t, the representative size of molding D, the ratio of volume and surface area of molding V/S, and specific heat s. t=k(D・W/S)^n・.c^^n' (k : proportinal constant) The values of n and n' were calculated for many experimental cooling curves of solder, zinc, lead and tin. From the results of calculation, these values could be obtained n=0.953 and n'=0.418 respectively. By use of these values, the experimental cooling curves were normalized for each factor. These normalized curves were very much agreement, so the master cooling curves in solidification of liquid metal could be obtained. For the normalization of cooling curves in mold, the following expression was assumed too. x=kt^n (k : proportinal constant) Where x is the distance from the boundary between mold and molding, t is the cooling time and n is an experimental constant. The values of n, based on many experimental cooling curves, was 0.508. The master cooling curves of mold can be obtained, when applying the values of n to experimental curves.
Subjects
自然科学 ( Other)
Languages eng
Resource Type departmental bulletin paper
Publishers 山口大学教育学部
Date Issued 1985-09
File Version Not Applicable (or Unknown)
Access Rights metadata only access
Relations
[ISSN]0513-1693
[NCID]AN00243950
Schools 教育学部