高压气淬热处理对高压辊磨机用硬质合金柱钉的性能影响  

Effect of High Pressure Gas Quenching Heat Treatment on Properties of Cemented Carbide Studs for High Pressure Roller Mill

作　　者：徐海阳 XU Hai-yang(Sinosteel Tianyuan Anhui Intelligent Equipment Co.,Ltd.,Ma'anshan 243000,China)

机构地区：[1]中钢天源安徽智能装备股份有限公司,安徽马鞍山243000

出　　处：《稀有金属与硬质合金》2023年第4期88-91,共4页Rare Metals and Cemented Carbides

摘　　要：硬质合金柱钉是高压辊磨机柱钉辊中最核心的耐磨件。对WC-11.5Co硬质合金柱钉进行不同工艺参数的高压气淬热处理,随后进行性能对比分析和现场应用。实验结果表明:经950~1 350℃、0.6 MPa气淬热处理后,硬质合金柱钉的硬度、抗弯强度、断裂韧性和冲击韧性均提高,且当淬火温度为1 250℃时达到最高值。现场应用结果表明,经1 250℃、0.6 MPa气淬热处理硬质合金柱钉在使用过程中不易发生折断、崩边等现象,且耐磨性能好;与未经气淬热处理的柱钉相比,其带料运行时间提高了1.2~1.5倍,使用寿命明显延长。Cemented carbide studs are the core wear-resistant parts in stud roller of high pressure roller mills.WC-11.5Co cemented carbide studs were subjected to high pressure gas quenching heat treatment with different technological parameters,and then their properties were compared and analyzed and field application was conducted.The experimental results show that the hardness,bending strength,fracture toughness and impact toughness of the cemented carbide studs are improved after gas quenching at 950~1 350 ℃ and 0.6 MPa,and reach their highest value when quenching temperature is 1 250 ℃.The results of the field application show that the cemented carbide studs treated with gas quenching at 1 250 ℃ and 0.6 MPa are not prone to breakage and edge collapse during their application,demonstrating excellent wear resistance,and their running time with materials is increased by 1.2~1.5 times and service life is obviously prolonged,compared with the studs without gas quenching heat treatment.

关 键 词：高压辊磨机 硬质合金柱钉 辊面服役寿命 高压气淬 热处理 

分 类 号：TG135.5[一般工业技术—材料科学与工程]