喷丸参数对钨第一壁材料表面强化影响因素分析  

Influence of Shot Peening Parameters on Surface Strengthening of Tungsten as First Wall Material

作　　者：种法力[1] 廖凯[2] CHONG Fali;LIAO Kai(Xuzhou University of Technology,Xuzhou 221000,China;Central South University of Forestry and Technology,Changsha 410004,China)

机构地区：[1]徐州工程学院,江苏徐州221000 [2]中南林业科技大学,湖南长沙410004

出　　处：《热加工工艺》2022年第10期94-97,103,共5页Hot Working Technology

基　　金：国家自然科学基金项目(11875230)。

摘　　要：利用喷丸技术进行钨聚变第一壁材料表面强化,以钨聚变第一壁材料表面增强为研究目的,通过微观形貌、晶粒细化、表面粗糙度、表面硬化和表面残余压应力等性能表征量,分析了陶瓷丸直径、喷丸压力、喷丸距离等喷丸参数之间的关系。结果表明:陶瓷丸料大小和喷丸压力决定喷丸强化效果,喷丸距离影响较小。在0.3~0.6 MPa内,陶瓷丸料大小是影响强化表面硬度的主要因素,对0.3~0.5 mm陶瓷丸,喷丸压力是影响表面粗糙度的主要因素。喷丸技术具有较好的强化效果,且对其表面粗糙度影响不明显。对钨而言,选择0.4 mm陶瓷丸、0.30 MPa喷丸压力、100 mm喷丸距离是较合适的喷丸参数。The shot peening technology was applied to strengthen the surface performance of tungsten as the first wall material in fusion device. Taking the surface strengthening of tungsten as the purpose, it was the analysis that the evolution of the microscopic morphology, grain refinement, surface roughness, surface hardening and surface residual stress with air pressure, ceramic pellet diameter and pellet distance. The results show that the surface performances strengthening of tungsten are mainly affected by ceramic pellet and air pressure, and the impact of pellet distance is small. The diameter of ceramic pellet is the main factor of tungsten surface hardness under the air pressure of 0.3-0.6 MPa. For ceramic pellet with the diameter of 0.3-0.5 mm, the air pressure is the main factor of tungsten surface roughness. The shot peening process has obviously strengthening effects on the surface performance of tungsten, and the increase of tungsten surface roughness is not obvious. It is the suitable shot peening parameters that the ceramic pellet diameter of 0.4 mm, air pressure of 0.30 MPa and pellet distance of 100 mm for tungsten material.

关 键 词：钨 喷丸 表面强化 

分 类 号：TG176[金属学及工艺—金属表面处理] TG146.4[金属学及工艺—金属学]