无电焊接中厚度钢板焊接接头的组织结构与性能研究  

Research on Structure and Performances of Non-electric Weld Joints for Medium-thickness Steel Plates

作　　者：刘宏伟[1] 马世宁[1] 刘吉延[1] 孙晓峰[1] 

机构地区：[1]装甲兵工程学院装备再制造工程系

出　　处：《装甲兵工程学院学报》2010年第2期74-78,共5页Journal of Academy of Armored Force Engineering

基　　金：军队科研计划项目

摘　　要：采用无电焊接方法对12mm厚度钢板进行了焊接。分析了满足中厚度钢板焊接能量要求的技术途径;利用SEM,EDS,XRD等手段观察、分析了焊缝的组织成分与显微结构;测试了焊接接头的拉伸强度、弯曲强度、显微硬度等力学性能。结果表明:在选择高放热体系基础上,通过增大焊接笔直径、减小反应物料粒径、提高压坯密度等方法,可以有效增大焊接热效率,从而满足中厚度钢板焊接能量需求;焊缝组织分为热影响区、熔合区与合金区,焊缝合金与母材间通过熔合区形成了冶金结合;焊接接头因固溶强化和析晶强化的作用,具有良好的力学性能,拉伸强度、平均显微硬度与弯曲强度分别为357MPa、186HV0.2与644MPa,达到了野战应急抢修技术要求。Steel plates with the thickness of 12 mm are welt by non-electric welding technology. The technical ways to meet the energy requirement for welding medium-thickness steel plates are analyzed. The components and micro-structure of the weld joints are analyzed and observed by means of SEM,EDS and XRD. The mechanical performances of tensile strength,average micro-hardness and flexural strength are tested. The results show that based on the high energy reactive system,the thermal efficiency of the weld pens can...

关 键 词：无电焊接 中厚度钢板 组织结构 力学性能 

分 类 号：TG407[金属学及工艺—焊接]