摘要
为降低盾构施工的换刀频率,提高施工效率,研究了一款新型刀圈材料5Cr5MoWVSi钢及其热处理工艺,通过正交试验法,分析16组不同工艺试块的金相组织、洛氏硬度、冲击韧性及耐磨性能,得出5Cr5MoWVSi钢经1030℃淬火、540℃3次回火后,综合性能良好,硬度可达58.9 HRC,韧性可达32.4 J/cm 2,该热处理工艺生产的5Cr5MoWVSi钢刀圈适用于复杂多变的硬岩或上软下硬地层。
In order to reduce the tool change frequency and improve the construction efficiency of shield tunneling,a new tool ring material 5Cr5MoWVSi steel and its heat treatment process were studied.Through orthogonal experiment,the metallographic structure,Rockwell hardness,impact toughness and wear resistance of 16 groups of test blocks with different processes were analyzed.It was concluded that 5Cr5MoWVSi steel had good comprehensive properties after 1030℃quenching and 540℃three times of tempering,with hardness up to 58.9 HRC and toughness up to 32.4 J/cm 2.The 5Cr5MoWVSi steel tool ring produced by this heat treatment process is applicable to complex and changeable hard rocks or upper soft and lower hard formations.
作者
廖剑平
Liao Jianping(Hi-Tech Industry Co.Ltd.,China Railway Construction South China Construction(Guangzhou)Co.Ltd.,Guangzhou 511466,China)
出处
《石家庄铁道大学学报（自然科学版）》
2023年第2期121-126,共6页
Journal of Shijiazhuang Tiedao University(Natural Science Edition)
关键词
盾构
滚刀刀圈
热处理
shield
hob ring
heat treatment
