REAGENTS, REAGENT MIXTURES, OXYGEN-CONTAINING HYDROCARBONS, DIETHYLENEGLYCOLMONOETHYLETHER, FOR USE IN CASE-FORMING CARBURIZATION OF FERROUS METALS, STEELS, AND ALLOYS

ELECTRIC FURNACES AND OVENS, ELECTRIC HEAT-TREATING FURNACES AND OVENS, AND REAGENT-TREATING RETORTS,FOR CASE-FORMING CARBURIZATION AND FOR PREVENTION OF DECARBURIZATION OF FERROUS METALS, STEELS AND ALLOYS; AND FOR PARTS AND ACCESSORIES OF AND FOR THE AFORESAID FURNACES, OVENS AND RETORTS