Method of heat treatment of steel

Details Method of heat treatment of steel Method of heat treatment of steel

1998-04-13

1999-03-23

Sheehan, John

Metal treatment

Process of modifying or maintaining internal physical...

Magnetic materials

148595, 148598, 148645, 148653, 148579, H01F 114, C21D 952

Patent

active

058853707

ABSTRACT:
Magnetic heat treatment of steel, characterized by transforming steel containing about 0.01 to 2.0 mass % of carbon in a magnetic field having a gradient of about 0.1 T/cm or more and about 10 T/cm or less (absolute value) at the Curie point or lower, to effectively refine the microstructure by subjecting the steel to heat treatment in a strong magnetic field having a gradient, followed by advantageously improving the mechanical properties of the steel.

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patent: 4877464 (1989-10-01), Silgalis et al.
patent: 5089060 (1992-02-01), Bradley et al.
patent: 5225005 (1993-07-01), Burage et al.
Chekin, Electomagnetic Densification of Matals for Increasing Castings Cleanliness, Liteinoe Proizvod, (2), 24, (abstract only), 1967.
Kim et al., A Study of Residual Stresses in the Surface Hardening of Blade Mold Frequency Induction Hardening, Surface Coating Technology, 58(2) pp. 129-136 (abstract only), 1993.

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