Cast steel material for slipping shoe, and casting method

• Main Authors: CHEN JIEHUA, SHAO XINBO, FENG SHUNYU, FAN ZHOUQIANG, WANG XINYU, WANG XINGYU
• Format: Patent
• Language: Chinese; English
• Published: 08.10.2019
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a cast steel material for a slipping shoe, and a casting method. The cast steel material comprises the following components by weight: 0.35%-0.45% of C, 0.45%-0.7% of Mn, 0.25%-0.6% of Si, no more than 0.03% of P, no more than 0.03% of S, 0.9%-1.4% of Cr, 0.25%-0.35% of Mo, 1.3%-1.8% of Ni, no more than 0.04% of Al, no more than 0.25% of Cu, no more than 0.1% of V and the balance Fe; and the carbon equivalent is CE, and CE=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 <= 0.91%. According to the cast steel material, through regulation of appropriate equivalent alloy elements, the carbonequivalent is reduced while the comprehensive strength is ensured properly; and the welding property is improved greatly. On the premise that the cost is not increased, the contents of the Mn, S, P,Cu and other elements are reduced as far as possible, and the mechanical property and the welding property of materials are ensured to the maximum extent, so that repair is facilitated. Meanwhile, thealloy element NI is increa