Simulation Optimization and Experimental Research on the Heat Treatment Process Before and after Remanufacturing of the H13 Steel Cutter Ring of the Tbm Disc Cutter

• DOI: 10.2139/ssrn.4522360
• Publication Date: 2023-07-27T07:19:02Z
• Authors: Kui Zhang; Shuhao Dai; Boyan Jiang; Dinghua Wang; Cheng Han; Qingyu Liu
• Keywords: Remanufacturing

This paper introduces a process route for remanufacturing repair disc cutter rings (hereinafter referred to as rings) employed in Full-face rock tunnel boring machines (TBMs) based on Metal Active Gas Arc Welding (MAG). The study centers two key thermal treatment processes, namely preheating and post-weld tempering. research finite element (FE) simulation experimental methods investigate the impact of these processes performance with uniform wear. Simulation analysis revealed that absence promoted formation defects, such cracks, both heat-affected zone surfacing layer. Conversely, excessively high temperatures resulted an increased size melt pool, thereby leading mechanical properties instability. Moreover, raising tempering temperature considerably decreased residual stress level remanufactured ring. effect phase transformation was minimal. Utilizing self-made integrated platform heat remanufacture rings. Microstructural observations indicated influence microstructure greater than time. Weighted comparative range exerts most substantial physical properties. Group 2 exhibited 10.5% enhancement comprehensive compared engineering held primary significance influencing performance, whereas time were considered secondary factors.