Composite manufacturing method for rolling mill house

• Main Authors: XU JIE, QU YINHU, LIU YI, CHENG XIAOLE, LIU SHAOFEI, FU HANGUANG, XU GUANGSHEN
• Format: Patent
• Language: Chinese; English
• Published: 18.08.2020
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; ALLOYS; CASTING; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; FERROUS OR NON-FERROUS ALLOYS; FOUNDRY MOULDING; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MACHINE TOOLS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; POWDER METALLURGY; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WELDING; WORKING BY LASER BEAM; WORKING METALLIC POWDER

The invention discloses a composite manufacturing method for a rolling mill house. The composite manufacturing method for the rolling mill house comprises the following steps: smelting molten medium-carbon-low alloy steel by virtue of an electric-arc furnace at first; then pouring the molten steel into a rolling mill house blank through a water glass sand mold; carrying out rough machining and normalizing treatment on the rolling mill house blank; then adopting a CMT electric-arc additive manufacturing method, taking a cold metal transition electric arc as a heat source, and overlaying at a working part of the rolling mill house layer by layer through welding wire melting to manufacture a wear-resistant and corrosion-resistant coating layer with a thickness of 10.0-12.0mm; and obtaining the rolling mill house with high wear resistance and corrosion resistance. The service life is prolonged by 3 times above compared with a common cast steel rolling mill house; and the accuracy of a rolling material can further