Method of manufacturing heat resisting magnetic scale

Details Method of manufacturing heat resisting magnetic scale Method of manufacturing heat resisting magnetic scale

1988-08-29

1990-06-19

Kastler, S.

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148903, C21D 109

Patent

active

049350706

ABSTRACT:
A method of manufacturing a heat resisting magnetic scale is disclosed which comprises a manufacturing process in which at least a part of a heat resisting base is heated and a manufacturing process in which the part which has been heated is immediately cooled down for the purpose of changing the magnetic characteristics of the part of the base which has been heated and the Curie point of the part which has been heated is raised to 100.degree. C. or higher.
A heating resisting magnetic scale which cannot be demagnetized at high temperatures and cannot be separated even if it is subjected to rapid change in temperatures, and which exhibits excellent stability and measuring precision.

REFERENCES:
patent: 4510371 (1985-04-01), Nakamura et al.
patent: 4552596 (1985-11-01), Ichiyama et al.
Kamewaka et al., "A Magnetic Guidance Method for Automated Guided Vehicles", pp. 69-74, 12/87.
Uemura et al., "Application and Precision of Measuring Instrument Using Magnetic Scale", vol. 20, pp. 12-19, 12/87.

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