哈尔滨工程大学学报2018，Vol.39Issue(4)：766-771,6.DOI:10.11990/jheu.201701052
弹丸冲击速度对带钢表面鳞层破坏行为影响
Damage behavior of oxide scale at different blasting impact velocities
摘要
Abstract
To effectively improve the efficiency of shot blasting and descaling, blasting descaling model is estab-lished and a finite element numerical simulation is used to calculate the effect of the impact velocity of projectile on the failure area of the scale layer,base pits,and residual stress.Results show that scale can be destroyed,even at very small impact speeds such as 5 m/s.In addition,the descaled area increases with a higher projectile impact, but the matrix stress/strain increases.The failure area of the scale layer caused by the plastic impact consists of two parts:a direct failure area caused by projectile impact and an indirect failure zone caused by deformation transfer of the iron matrix;where the latter expands in a star-like pattern and the depth of plastic pits left in the matrix is ap-proximately linear with the impact velocity.Therefore,to meet requirements of surface roughness and residual stress during actual site production,a larger impact velocity should be selected.关键词
抛丸/冲击速度/弹丸冲击速度/鳞层/有限元仿真/失效区域/除鳞模型Key words
shot blasting/impact velocity/blasting impact velocity/scale layer/finite element simulation/failure area/descaling model分类
矿业与冶金引用本文复制引用
王尚,杨荃,王晓晨,何海楠,单忠德..弹丸冲击速度对带钢表面鳞层破坏行为影响[J].哈尔滨工程大学学报,2018,39(4):766-771,6.基金项目
国家自然科学基金项目(51604024) （51604024）
国家"十二五"科技支撑计划(2015BAF30B01) （2015BAF30B01）
中央高校基本科研业务费专项资金项目(FRF-TP-15-001A1) （FRF-TP-15-001A1）
清华大学摩擦学国家重点实验室开放基金项目(SKLTKF16B11). （SKLTKF16B11）
