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DE1197721B
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Process for cementing and hardening a metal part
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DE1126044B
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Process for the electrical heating of metal parts
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GB914969A
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A method of cementation in which fluidised carbon powder particles are employed
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US3096221A
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Method of quick nitrification in which fluidized particles are employed
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US3099589A
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Method of cementation in which fluidized carbon powder particles are employed
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GB925544A
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Method of and apparatus for heating or heat-treating electrically metals and metal articles
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US3060304A
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Electric direct heating method of heating metallic pieces
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GB885607A
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A process for the heat treatment of a solid metal object
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CA677482A
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Gas reactions by spark discharge
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CA647671A
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Method of quick nitrification in which fluidized particles are employed
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CA686671A
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Fluidized electro-conductive powder resistance furnace
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CA644197A
|
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Method of cementation in which fluidized carbon powder particles are employed
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CA702988A
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Method of heating metallic pieces
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