Specialized metallurgical processes – compositions for use therei – Processes – Process control responsive to sensed condition
Patent
1994-12-09
1996-06-18
Andrews, Melvyn
Specialized metallurgical processes, compositions for use therei
Processes
Process control responsive to sensed condition
148509, 164452, 324226, C22B 916
Patent
active
055273777
ABSTRACT:
Conductivity distribution on the cross section of metal or alloy is measured by an eddy current type conductivity meter and conductivity distribution contour map is prepared. Based on the pattern of this conductivity distribution contour map, heat history of an ingot and segregation of added element are analyzed and melting and/or casting conditions of metal or alloy are re-established. This method allows to carry out the testing and analysis within short time and quickly provides assessment results for re-establishment of melting and/or casting conditions. Thereby, metal or alloy ingots which may create poor quality products during the following steps can be eliminated; in particular, applying this method to a manufacturing of copper precipitation hardening alloy and the like, more sound ingots can be obtained and suitability of ingots for the material which should be worked in the following step can be assessed.
REFERENCES:
patent: 3793717 (1974-02-01), Degenkolb
patent: 4799010 (1989-01-01), Muller
Hosokawa Isao
Miwa Yosuke
Miyafuji Motohisa
Mori Syuhei
Ohsako Junichi
Andrews Melvyn
Kabushiki Kaisha Kobe Seiko Sho
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