新型 TBM 圆盘铣刀环钢的工艺优化与性能

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Strength of Materials Pub Date : 2024-02-28 DOI:10.1007/s11223-024-00617-9
M. Z. Han, J. B. Guo, J. Li, Y. J. Huang, H. R. Qi, X. M. Chen
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引用次数: 0

摘要

在使用隧道掘进机(TBM)掘进具有强烈冲击力的高磨损地层过程中,由 H13 和 DC53 钢制成的圆盘刀圈容易出现磨损和崩裂等故障。为了提高刀环的使用寿命,开发了一种硬度和韧性更好的新型 Cr-Mo-W-V 中碳合金刀环钢(DQ1)。通过光谱仪、光学显微镜、洛氏硬度计和冲击试验机研究了热处理工艺对 DQ1 钢微观结构和机械性能的影响。通过磨料磨损试验和岩石破碎试验,对 DQ1、H13 和 DC53 钢的耐磨性进行了比较和分析。结果表明,DQ1 钢在 1040°C 淬火和 540°C 回火后获得了优异的机械性能和耐磨性,硬度比 H13 钢高 4.4 HRC,冲击吸收能量比 DC53 钢高 85.7%。在开挖强冲击、高磨损地层时,DQ1 钢刀环的平均使用寿命比 H13 钢刀环提高了 24.6%,且未出现 DC53 刀环常见的脆性断裂问题。该研究成果有助于提高高强度、高侵蚀地层中 TBM 的开挖效率,降低成本。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Process Optimization and Performance of New TBM Disc Cutter Ring Steel

During the tunneling process of high-abrasion stratum with strong impact by tunnel boring machines (TBM), disc cutter rings made of H13 and DC53 steels are prone to failures like wear and chipping. To improve the service life of the cutter ring, a new kind of Cr-Mo-W-V medium carbon alloy cutter ring steel (DQ1) with better hardness and toughness was developed. The effects of the heat treatment process on the microscopic structure and mechanical properties of DQ1 steel were studied by the spectrometer, optical microscope, Rockwell hardness tester, and impact tester. The wear resistance of DQ1, H13, and DC53 steel was compared and analyzed through the abrasive wear test and rock breaking test. The results indicate that outstanding mechanical properties and wear resistance of DQ1 steel were obtained after quenching at 1040°C and tempering at 540°C, the hardness was 4.4 HRC higher than that of H13 steel, and the impact absorption energy was 85.7% higher than that of DC53 steel. In excavating strong impact and high abrasion formations, the average service life of the DQ1 steel cutter ring was increased by 24.6% compared with the H13 steel cutter ring, and the brittle fracture problem common in the DC53 cutter ring did not appear. The research achievements can facilitate to improve the excavation efficiency and reduce the cost of TBM in high strength and high erosion strata.

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来源期刊
Strength of Materials
Strength of Materials MATERIALS SCIENCE, CHARACTERIZATION & TESTING-
CiteScore
1.20
自引率
14.30%
发文量
89
审稿时长
6-12 weeks
期刊介绍: Strength of Materials focuses on the strength of materials and structural components subjected to different types of force and thermal loadings, the limiting strength criteria of structures, and the theory of strength of structures. Consideration is given to actual operating conditions, problems of crack resistance and theories of failure, the theory of oscillations of real mechanical systems, and calculations of the stress-strain state of structural components.
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