Process for enameling steel

Claim 1

THE METHOD OF PRODUCING A TENACIOUSLY ADHERING, SUBSTANTIALLY UNIFORM AND CONTINUOUS PORCELAIN ENAMEL COAT ON A FERROUS METAL ARTICLE WHICH COMPRISES THE STEPS OF REMOVING SUBSTANTIALLY ALL LOOSE PARTICLES AND FOREIGN MATTER FROM THE SURFACE OF SAID ARTICLE; ELECTRODEPOSITING ON THE THUS CLEANED SURFACE SUBSTANTIALLY UNIFORM THICKNESS COAT OF SPONGY BURNED METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL AND COBALT AND OF WEIGHT IN EXCESS OF ABOUT 0.1 GRAMS PER SQUARE FOOT, APPLYING PORCELAIN ENAMEL SLIP DIRECTLY TO THE RESULTING ELECTROPLATE SURFACE, AND FIRING SAID SLIP AND PRODUCING SAID ENAMEL COAT, SAID ELECTRODEPOSITION STEP BEING CONDUCTED TO PRODUCE A METAL COAT OF THE FINELY-DIVIDED AND SPONGY CHARACTER OF THE METAL COAT PRODUCED BY IMMERSING A CLEAN FERROUS METAL BODY OS A CATHODE APPROXIMATELY ONE INCH FROM A LEAD ANODE IN AN AQUEOUS SOLUTION CONTAINING ABOUT 100 GRAMS PER LITER OF AMMONIUM SULFATE AND ABOUT 10 GRAMS PER LITER OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF NICKEL SULFATE AND COBALT SULFATE AT ABOUT 200*F. FOR BETWEEN ABOUT 5 AND ABOUT 15 SECONDS WHILE IMPOSING UPON THE ELECTRODES A TEN-VOLT CURRENT.

Claim 2

THE METHOD OF PRODUCING A TENACIOUSLY ADHERING, SUBSTANTIALLY UNIFORM AND CONTINUOUS PORCELAIN ENAMEL COAT ON A FERROUS METAL ARTICLE WHICH COMPRISES THE STEPS OF REMOVING SUBSTANTIALLY ALL LOOSE PARTICLES AND FOREIGN MATTER FROM THE SURFACE OF SAID ARTICLE; ELECTRODEPOSITING ON THE THUS CLEANED SURFACE SUBSTANTIALLY UNIFORM THICKNESS COAT OF SPONGY BURNED METAL SELECTED FROM THE GROUP CONSISTING OF NICKEL AND COBALT AND OF WEIGHT IN EXCESS OF ABOUT 0.1 GRAMS PER SQUARE FOOT, APPLYING PORCELAIN ENAMEL SLIP DIRECTLY TO THE RESULTING ELECTROPLATE SURFACE, AND FIRING SAID SLIP AND PRODUCING SAID ENAMEL COAT, SAID ELECTRODEPOSITION STEP BEING CONDUCTED TO PRODUCE A METAL COAT OF THE FINELY-DIVIDED AND SPONGY CHARACTER OF THE METAL COAT PRODUCED BY IMMERSING A CLEAN FERROUS METAL BODY OS A CATHODE APPROXIMATELY ONE INCH FROM A LEAD ANODE IN AN AQUEOUS SOLUTION CONTAINING ABOUT 100 GRAMS PER LITER OF AMMONIUM SULFATE AND ABOUT 10 GRAMS PER LITER OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF NICKEL SULFATE AND COBALT SULFATE AT ABOUT 200*F. FOR BETWEEN ABOUT 5 AND ABOUT 15 SECONDS WHILE IMPOSING UPON THE ELECTRODES A TEN-VOLT CURRENT.