激光技术
激光技術
격광기술
Laser Technology
2015年
6期
850-853
,共4页
陈俊科%石岩%倪聪%蒋士春%刘佳
陳俊科%石巖%倪聰%蔣士春%劉佳
진준과%석암%예총%장사춘%류가
激光技术%奥氏体不锈钢%激光焊接%线能量%焊缝成形%力学性能
激光技術%奧氏體不鏽鋼%激光銲接%線能量%銲縫成形%力學性能
격광기술%오씨체불수강%격광한접%선능량%한봉성형%역학성능
laser technique%austenitic stainless steel%laser welding%heat input%weld appearance%mechanical property
为了研究线能量对304奥氏体不锈钢激光焊接质量的影响，采用高功率Nd∶YAG激光器及焊接机器人对304奥氏体不锈钢薄板进行了激光焊接工艺试验，并使用光学显微镜、显微硬度计、拉伸试验机等仪器重点研究了线能量对304奥氏体不锈钢激光焊接焊缝成形和力学性能的影响。结果表明，线能量对焊缝成形、显微硬度及力学性能有较大影响，接头显微硬度分布不均匀，低功率时静拉伸强度最小值为671．67MPa，高功率时静拉伸强度最小值达780MPa。
為瞭研究線能量對304奧氏體不鏽鋼激光銲接質量的影響，採用高功率Nd∶YAG激光器及銲接機器人對304奧氏體不鏽鋼薄闆進行瞭激光銲接工藝試驗，併使用光學顯微鏡、顯微硬度計、拉伸試驗機等儀器重點研究瞭線能量對304奧氏體不鏽鋼激光銲接銲縫成形和力學性能的影響。結果錶明，線能量對銲縫成形、顯微硬度及力學性能有較大影響，接頭顯微硬度分佈不均勻，低功率時靜拉伸彊度最小值為671．67MPa，高功率時靜拉伸彊度最小值達780MPa。
위료연구선능량대304오씨체불수강격광한접질량적영향，채용고공솔Nd∶YAG격광기급한접궤기인대304오씨체불수강박판진행료격광한접공예시험，병사용광학현미경、현미경도계、랍신시험궤등의기중점연구료선능량대304오씨체불수강격광한접한봉성형화역학성능적영향。결과표명，선능량대한봉성형、현미경도급역학성능유교대영향，접두현미경도분포불균균，저공솔시정랍신강도최소치위671．67MPa，고공솔시정랍신강도최소치체780MPa。
In order to study the influence of heat input on laser welding quality of 304 austenitic stainless steel , experiments were carried out by using high power Nd∶YAG laser and welding robots .Weld appearance , microhardness and mechanical properties were analyzed with an optical microscope , a microhardness tester and a tensile testing machine .Experimental results show that heat input has great influence on weld appearance , microhardness and mechanical properties . Furthermore microhardness is different in different areas .The lowest tensile strength values of laser welding are 671.67MPa at low laser power and 780MPa at high laser power .
