Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1995-04-07
1997-02-25
Silverberg, Sam
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
148592, 148594, 148633, 148638, 148606, 148607, 210222, C21D 130
Patent
active
056055870
ABSTRACT:
Martensitic steel components of apparatus for magnetic conditioning of liquids which are subjected to cathodic reaction and degradation are treated prior to use to form a barrier of iron-chromium oxide and a uniform level of hardness throughout by heating the steel to a temperature near the grain boundary temperature of the steel, maintaining that temperature for a specified period and then rapidly quenching the steel.
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patent: 3065119 (1962-11-01), Brautigam
patent: 3097980 (1963-07-01), Swarr
patent: 3235415 (1966-02-01), Palty
patent: 4154629 (1979-05-01), Asai
patent: 4432811 (1984-02-01), Steibellehner
Hydrodynamics Corporation
Kanz Jack A.
Silverberg Sam
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