▎ 摘　　要

NOVELTY - Preparation of constant-temperature material involves providing an electric arc furnace, using direct reduced iron as main raw material, eccentric arc furnace to melt direct reduced iron, using oxygen blowing operation, using tapping spout structure and oxygen blowing operation of electric furnace smelting, removing portion of carbon, adding 60-70 wt.% stainless steel to furnace for alloying molten steel, transferring molten steel to argon-oxygen decarburization furnace, re-blowing and supplying oxygen, adding 10-20 wt.% graphene, 10-20 wt.% carbon powder, 5-10 wt.% rare earth elements, and 1-5 wt.% metal elements to furnace, reducing gradually oxygen flow rate and increasing nitrogen or argon flow, discharging the molten steel and slag into a steel ladle, reducing the chromium oxide, degassing and vacuum oxygen decarburization of molten steel, and capping the continuous casting ladle, electromagnetically stirring the crystallizer, pouring the argon gas protection and stirring. USE - Preparation of constant-temperature material used for kitchenware e.g. non-stick and smokeless pan. ADVANTAGE - The method enables economical and environmentally-friendly preparation of constant-temperature material having improved structure performance. The material is safe for cooking. DETAILED DESCRIPTION - Preparation of constant temperature material involves providing electric arc furnace, using direct reduced iron as main raw material, eccentric arc furnace to melt direct reduced iron, providing furnace equipped with furnace wall cluster carbon-oxygen gun, using oxygen blowing operation to achieve dephosphorization molten steel, using tapping spout structure and oxygen blowing operation of electric furnace smelting, removing portion of carbon in molten steel, adding 60-70 wt.% stainless steel to electric furnace for alloying molten steel and molten tank reaches at 1600-1660 degrees C, transferring molten steel in electric furnace to argon-oxygen decarburization furnace, re-blowing and supplying oxygen using oxygen gun and side tuyere at the bottom of the furnace to accelerate the decarburization rate, adding 10-20 wt.% graphene, 10-20 wt.% carbon powder, 5-10 wt.% rare earth elements, and 1-5 wt.% metal elements to furnace when reaching carbon content of 5-10 wt.%, reducing gradually oxygen flow rate and increase nitrogen or argon flow to reduce carbon monoxide partial pressure to ensure the thermodynamic conditions of reducing carbon and maintaining chromium and temperature of molten steel reaches at 1680-1700 degrees C and end carbon content is 0.25 wt.%, discharging the molten steel and slag into a steel ladle under the furnace, and reducing the chromium oxide in the slag by slag-steel mixing and punching, degassing and vacuum oxygen decarburization of molten steel, and capping the continuous casting ladle, electromagnetically stirring the crystallizer, pouring the argon gas protection and stirring the solidified end.