为解决连续化生产中钽条焊接的技术难题，在惰性气体的保护下采用电容储能式预热闪光对焊，对轧制后的4 mm×4 mm钽条进行焊接试验研究。利用金相显微镜、扫描电镜和力学性能检测设备等分析检测手段，对不同焊接顶锻力作用下的焊接区（包括热影响区）的显微组织、晶粒和晶界微区成分、硬度以及焊接区拉伸强度等进行了测试。研究表明，采用合适的闪光对焊工艺可以实现大尺寸钽条的对接，焊缝组织致密，接头具有较高的结合强度，对于大尺寸钽条无头轧制与连续拉拔技术的发展具有一定的使用价值。
To solve the technical problems of tantalum strip welding during continuous production,the welding experiments of rolled 4 mm × 4 mm tantalum strips were conducted using capacitor discharge preheating flash butt welding under inert gas protection. Using optical microscopy,scanning electron microscope and mechanical properties testing equipment, the microstructure, grains and grain boundary compositions, hardness and tensile strength of the welding zones( including heat?affected zone) under different forging forces were tested. The bonding of large?sized tantalum butts can be achieved using appropriate flash butt welding process, with dense welding microstructure and high bonding strength. It helps tothe development ofendless rolling and continuous drawing of large?sized tantalum strips.
参考文献
| [1] | S. M. CARDONNE;P. KUMAR;C. A. MICHALUK .Tantalum and its Alloys[J].International Journal of Refractory Metals & Hard Materials,1995(4):187-194. |
| [2] | 张晓,万庆峰,刘云峰,童泽堃,解永旭,郭林波,韩鹏.钽丝生产过程影响质量因素的研究[J].金属制品,2013(02):19-22. |
| [3] | Kurt D. Moser .The manufacture and fabrication of tantalum[J].JOM,1999(4):29-31. |
| [4] | 张晓,万庆峰,刘云峰,马跃忠,童泽堃,杨文明,韩鹏.电容器级钽丝的现状与展望[J].电子元件与材料,2013(06):65-67. |
| [5] | 段路茜,阳代军.无头轧制过程中钢坯的焊接技术[J].焊接技术,2003(03):1-3. |
| [6] | 冯秋元,李廷举,丁志敏,金俊泽.闪光对焊技术研究现状及发展趋势[J].材料科学与工艺,2008(01):49-53. |
| [7] | 王金雪,袁鸿,张国栋,余槐,肖志翔,江飞龙,刘忠.TC4钛合金闪光对焊接头不同焊后热处理的组织与性能[J].航天制造技术,2013(04):22-24. |
| [8] | 郭青蔚;王肇信.现代铌钽冶金学[M].北京:冶金出版社,2009:546. |
| [9] | 陈健雄.钼杆焊接的研究[J].中国钼业,2004(04):40-42. |
| [10] | 李炳,范新会,王鑫,陈建,严文.单晶铜／多晶铜闪光对焊接头组织的演变[J].西安工业大学学报,2013(08):648-651. |
| [11] | 崔维达 .低碳钢闪光对焊与摩擦焊接头性能和金相组织的对比研究[J].焊接学报,1988,9(2):69-74. |
| [12] | 赵熹华.压力焊[M].北京:机械工业出版社,1989 |
| [13] | 王小玉;朱明 .闪光焊工艺对45Si2Cr钢筋焊接接头组织的影响[J].材料科学与工艺,1993,1(2):80-85. |
| [14] | L.E. Iorio;B.P. Bewlay;M. Larsen .Analysis of AKS- and lanthana-doped molybdenum wire[J].International Journal of Refractory Metals & Hard Materials,2006(4):306-310. |
| [15] | 张晓,万庆峰,解永旭.压缩率对钽丝力学性能的影响[J].金属制品,2012(05):37-39. |
| [16] | FUJII T;WATANABE R;HIRAOKA Y et al.Effect of initial grain size on the secondary grain growth in molybdenum sheet[J].Material Science and Engineering,1984,68(1):45-53. |
| [17] | 齐果,甄立玲,张立君,明珠,樊建勋,李岩,刘国孝,杨忠仙.变形锌合金闪光对焊焊接工艺研究[J].兵器材料科学与工程,2010(06):78-80. |
| [18] | BAUER S .Defects and characteristics of flash:welded butt joints[J].ZIS-Mitt,1987,29(10):1034-1043. |
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