Paper Title:
Observation of Hot Tear Formation by Acceleration Sensor
  Abstract

Hot tear is the one of the biggest problems of cast products. There have been many researches in order to understand the formation mechanism of hot tear. However, it is still uncertain when a hot tear initiates and how it propagates. Thus, the preliminary research has been carried out to observe the vibration of permanent mold which correspond to the initiation or propagation of hot tear. Al-2.0 wt% Cu alloy was used for test alloy. The signals of acceleration sensor were recorded at an interval of 5 ms. After casting, the vibration, which lasted scores of milliseconds, was observed intermittently. This may indicate that hot tear initiates or propagates intermittently and the strain due to contraction of solidification or cooling is relaxed by hot tear.

  Info
Periodical
Materials Science Forum (Volumes 654-656)
Main Theme
Edited by
Jian-Feng Nie and Allan Morton
Pages
1436-1439
DOI
10.4028/www.scientific.net/MSF.654-656.1436
Citation
H. Esaka, Y. Naitoh, D. Uotani, K. Shinozuka, "Observation of Hot Tear Formation by Acceleration Sensor", Materials Science Forum, Vols. 654-656, pp. 1436-1439, 2010
Online since
June 2010
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Price
$32.00
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