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Article ID: 1003-6326(2005)06-1297-06 High temperature brazing of diamond tools YAO Zheng-jun(姚正军)1, SU Hong-hua(苏宏华)1, FU Yu-can(傅玉灿)2, XU Hong-jun(徐鸿钧)2 (1. College of Materials Science..., Nanjing 210016, China) Abstract: A new brazing technique of diamond was developed. Using this new technique optimum chemical and metallurgical bonding between the diamond grits and the carbon......
薄板TIG对接焊温度场的有限元模拟谭险峰,张华摘 要:焊件中的温度场分布反映了复杂的焊接热过程,是研究焊接变形,焊后残余应力等状况的基础.焊接数值模拟技术的出现,为焊接技术的深入发展创造了有力的条件.针对低碳钢薄板件TIG对接焊时,应用双椭圆分布热源模型,建立了TIG对接焊三维温度场有限元数值分析模型,将有限元解同实验结果进行了比较,两者基本吻合,表明了该分析模型的有效性,并以此有限元模型为基础,分析了两焊板间存在间隙和焊枪偏离焊缝中心这一实际情形下,温度场分布的不均匀性.关键词:TIG对接焊;薄板;温度场;数值模拟;有限元;......
Optimization of pulsed current gas tungsten arc welding process parameters to attain maximum tensile strength in AZ31B magnesium alloy G. PADMANABAN, V. BALASUBRAMANIAN Center for Materials... relationship to predict tensile strength of pulsed current gas tungsten arc welded AZ31B magnesium alloy was developed. Incorporating process parameters such as peak current, base current, pulse......
镁合金活性TIG焊与TIG焊的接头组织与性能分析 陈东高1,王法科1,王冬生1,谭兵1,张立君1,王健1,齐果1 (1.中国兵器科学研究院宁波分院,浙江,宁波,315103) 摘要:采用TIC,焊和活性TIG焊(A-TIG)方法对10 mm厚的AZ31镁合金进行焊接.使用光学显微镜,扫描电镜等分析两种焊接方法焊接的接头外观形貌,显微组织等.试验结果表明:两种方法都能获得成形美观的焊缝,但采用活性剂可以获得更好的熔透效果;这两种方法获得的接头晶粒尺寸为焊缝区最大,母材区最小,并且打底焊与封面焊的组织形貌不完全相同;当采用TIG焊时,析出相主要在晶界七,而采用A-TIC焊时,在晶界与晶粒上都存在析出相;两种方法得到的焊接接头硬度都是焊缝区硬度最高,热影响区最低;两种方法得到的焊接接头强度基本一致,断裂部位在焊缝处. 关键词:镁合金; TIG焊; 微观组织; 力学性能; [全文内容......
Strengthening mechanism of ceramic particle reinforced bonds by ultrasonic brazing of AlMMCsLENG Xue-song1, WANG Chang-wen1, ZHANG Yang2, CHEN Xiao-guang1, YAN Jiu-chun1(1. State Key Laboratory... in the composite bonds. Therefore, with appropriate bonding parameters, ultrasonic brazing can make the SiC particles and Al contents increase in the bond, and this distribution will contribute......
-sided arc welding process[J]. Acta Metallurgica Sinica, 2002, 38(4): 427-432.(in Chinese) [15]ZHAO Tie-dong. Study on the Mechanism and Phenomenon of Titanium Alloys A-Tig Welding [D]. Harbin...Article ID: 1003-6326(2005)05-1081-04 Double-sided gas tungsten arc welding process on TC4 titanium alloy GAO Hong-ming(高洪明), BAI Yan(白 岩), YANG Tian-dong(杨天东) (State Key Laboratory......
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reactions on fracture mechanisms in TIG arc-welded aluminium matrix composites [J]. Composites Science and Technology, 2000, 60(4): 613-622. [12] JIANG Long-tao, WU Gao-hui, SUN Dong-li, ZHANG Qiang... Trans. Nonferrous Met. Soc. China 22(2012) 305-311 Effect of Ti-Si-Mg-Al wire on microstructure and mechanical properties of plasma arc in-situ welded joint of SiCp/Al composites LEI Yu-cheng1, 2......
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5083铝合金的双枪双面TIG焊工艺和接头性能研究 唐磊1,郭小辉1,王乃友1,刘志颖1,何刚1 (1.中国船舶重工集团公司第七二五研究所,河南,洛阳,471039) 摘要:针对国内石油和化工等行业铝合金空分设备中中厚板铝合金的TIG焊接工艺,研究了10 mm厚5083板对接双枪双面TIG焊工艺,浅析了该工艺的焊接特点,并选择确定了中厚板铝合金的双枪双面TIG焊的规范参数.试验表明,双枪焊焊缝外观和内部质量优良,接头性能良好. 关键词:铝合金; 双枪双面TIG焊; 管道; [全文内容正在添加中] ......
