ZW931 roller of lithium ion battery pole piece rolling mill and preparation method of ZW931 roller

• Main Authors: ZHANG CHANGCHUN, SONG WENJIAN, ZHANG JIAN, CHEN HAITONG, CAO LIJUN, PAN CHENGMING, XIAO SHUMENG, YU HONGYAN, LIU DAOXIAN, ZHAO WEIDONG, LI TE, SHAO ZHIYONG, JIANG DAPENG
• Format: Patent
• Language: Chinese; English
• Published: 30.12.2022
• Subjects: ALLOYS; CHEMISTRY; COMBINED OPERATIONS; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MACHINE TOOLS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; OTHER WORKING OF METAL; PERFORMING OPERATIONS; PRETREATMENT OF RAW MATERIALS; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; PRODUCTION AND REFINING OF METALS; PUNCHING METAL; ROLLING OF METAL; TRANSPORTING; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS; UNIVERSAL MACHINE TOOLS

The invention relates to a ZW931 roller of a lithium ion battery pole piece rolling mill and a preparation method of the ZW931 roller. The ZW931 roller comprises, by mass, 0.85%-0.95% of C, 0.25%-0.45% of Si, 0.20%-0.40% of Mn, 2.80%-3.20% of Cr, 0.20%-0.40% of Mo, 0.05%-0.15% of V, smaller than or equal to 0.010% of P, smaller than or equal to 0.010% of S, smaller than or equal to 0.25% of Ni, smaller than or equal to 0.10% of Cu and the balance Fe and inevitable impurities. The component content and the preparation process are specifically set, so that the rating of various inclusions, network carbides, liquation carbides and banded carbides is smaller than or equal to 1.0 grade, and the obtained roller is high in strength and rigidity and can bear large bending moment and torque; the surface hardness is enough, deformation is reduced, and abrasion is resisted; the surface is smooth and clean without defects, and the roughness reaches the mirror level. 本发明涉及锂离子电池极片轧机的ZW931轧辊及其制备方法，所述ZW931轧辊具体成分按质量百分比含量计为：C为