ZHANG Yunshu, SHAO Dandan, DING Donghong, et al.Effect of Active Interpass Cooling on Temperature and Thermal Stress Evolution of Wire Arc Additively Manufactured Ti6Al4V Alloy[J].Electric Welding Machine, 2023, 53(2): 111-116.
ZHANG Yunshu, SHAO Dandan, DING Donghong, et al.Effect of Active Interpass Cooling on Temperature and Thermal Stress Evolution of Wire Arc Additively Manufactured Ti6Al4V Alloy[J].Electric Welding Machine, 2023, 53(2): 111-116. DOI: 10.7512/j.issn.1001-2303.2023.02.11.
Effect of Active Interpass Cooling on Temperature and Thermal Stress Evolution of Wire Arc Additively Manufactured Ti6Al4V Alloy
Heat accumulation in wire arc additive manufacturing (WAAM) is easy to cause poor forming quality and low deposition efficiency of parts. Active interpass cooling is beneficial to improve the efficiency of WAAM and improve the forming quality, so it has gained some attention. In this study, based on finite element numerical simulation analysis, the forming process of Ti6Al4V alloy made by WAAM under natural convection cooling and active interpass cooling respectively were simulated. By both experiment and numerical simulation, the effect of active interpass cooling on temperature and thermal stress evolution was investigated for thin-wall structure. The results show that active interpass cooling can increase heat dissipation effectively during deposition and reduce heat accumulation of thin-wall structure, further improve the residual stress in the forming parts and increase the WAAM efficiency.
关键词
电弧熔丝增材制造层间强制冷却数值模拟温度场应力场
Keywords
wire arc additive manufacturingactive interpass coolingnumerical modelstemperature fieldstress field
references
YANG Y,KNOL M F,VAN KEULEN F,et al. A semi-analytical thermal modelling approach for selective laser melting[J]. Additive Manufacturing,2018,21:284-297.
HUANG W J,WANG Q,MA N S,et al. Distribution characteristics of residual stresses in typical wall and pipe components built by wire arc additive manufacturing[J]. Journal of Manufacturing Processes,2022,82:434-447.
LIU M L,YI H,CAO H J,et al. Heat accumulation effect in metal droplet-based 3D printing: Evolution mechanism and elimination Strategy[J]. Additive Man-ufacturing,2021,48(PA).
ZHENG Y,YU Z Y,XIE J R,et al. A numerical model-based deposition strategy for heat input regulation during plasma arc-based additive manufacturing[J]. Additive Manufacturing,2022,58.
ABE T,KANEKO J I,SASAHARA H. Thermal sensing and heat input control for thin-walled structure building based on numerical simulation for wire and arc additive manufacturing[J]. Additive Manufacturing,2020,35.
ABE T,SASAHARA H. Development of the shell structures fabrication CAM system for direct metal lamination using arc discharge-lamination height error compensation by torch feed speed control[J]. International Journal of Precision Engineering and Manufacturing,2015,16(1):171-176.
DA SILVA L J,SOUZA D M,DE ARAúJO D B,et al. Concept and validation of an active cooling technique to mitigate heat accumulation in WAAM[J]. The International Journal of Advanced Manufacturing Technology,2020,107(5-6):2513-2523.
PARRY L,ASHCROFT I A,WILDMAN R D. Understanding the effect of laser scan strategy on residual stress in selective laser melting through thermo-mechanical simulation[J]. Additive Manufacturing,2016,12:1-15.