盾构机滚刀刀圈材料H13E钢高温拉伸性能研究  

Study on High-temperature Tensile Properties of H13E Steel for Cutting Ring of Shield Tunneller

作　　者：燕云[1] 李铮 岳彩超 蔡清[1] 马野[1] 

机构地区：[1]抚顺特殊钢股份有限公司技术中心,辽宁抚顺113001

出　　处：《模具制造》2018年第9期86-90,共5页Die & Mould Manufacture

摘　　要：介绍了盾构机的基本工作原理,抚顺特钢通过电炉+电渣重熔、精快锻联合成材生产出高质量的盾构机滚刀刀圈材料H13E钢,研究了盾构机滚刀刀圈材料H13E钢的高温力学性能。结果表明,H13E钢经热处理后硬度可以达到56～58HRC,在室温下抗拉强度达到1,886N/mm^2。随环境温度的升高,H13E钢的抗拉强度随之降低,在环境温度升高至700℃时,H13E钢抗拉强度降低至310N/mm^2。通过断口SEM分析,H13E钢拉伸试样断口为韧性断裂,从微观形貌属于微孔聚集型断裂,说明H13E钢基体塑性变形能力较强。The basic working principle of shield tunneller was introduced in the paper. The high-temperature mechanical properties of high quality H13 steel, which was produced by electric furnace and electroslag remehing,along with precision and rapid forging machines joint , used for cutting ring was studied. The results showed that the hardness of H 13E steel after heat treatment was up to 56~58HRC, while its tensile strength was 1,886N/mm2. The tensile strength of H13E steel decreased with the increase of temperature, so much so that its tensile strength was 310 N/mm2 when the temperature was at 700℃. With the analysis of SEM, the tensile fracture of H13E steel was ductile fracture and its microstructure was microvoid accumulation fracture, which proved that the plastic deformation of H 13E steel was strong.

关 键 词：盾构机 滚刀刀圈 高温力学性能 显微组织 扫描电镜 断口 

分 类 号：TG146[一般工业技术—材料科学与工程] TG249[金属学及工艺—金属材料]