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采用填充焊丝激光焊接工艺的研究 被引量:17
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作者 梅汉华 肖荣诗 左铁钏 《北京工业大学学报》 CAS CSCD 1996年第3期38-42,共5页
分析了采用填充焊丝激光焊接的加工原理、工艺特点和技术关键。工艺研究表明,采用填充焊丝激光焊接可以大为改善焊缝的冶金性能,提高焊缝质量,降低激光焊接工艺对工件坡口加工精度的要求,并可以实现大厚度板的窄间隙激光焊接。
关键词 填充焊丝 激光焊接 焊缝质量 可焊性
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Sc、Zr和Er微合金化Al-5Mg填充合金的焊接热裂敏感性 被引量:17
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作者 杨福宝 刘恩克 +2 位作者 徐骏 张志峰 石力开 《中国有色金属学报》 EI CAS CSCD 北大核心 2010年第4期620-627,共8页
采用鱼骨状试样裂纹试验、SEM和DSC等分析方法研究Sc、Zr和Er的复合添加对新型Al-5.6Mg-1.0Zn-0.6Mn基填充合金焊接热裂敏感性的影响。结果表明:Sc、Zr和Er(含Ti)参与形核核心Al3(Sc,X)的生成,Er(Ti)元素在晶界处形成富Er相,这对试验合... 采用鱼骨状试样裂纹试验、SEM和DSC等分析方法研究Sc、Zr和Er的复合添加对新型Al-5.6Mg-1.0Zn-0.6Mn基填充合金焊接热裂敏感性的影响。结果表明:Sc、Zr和Er(含Ti)参与形核核心Al3(Sc,X)的生成,Er(Ti)元素在晶界处形成富Er相,这对试验合金焊道熔池区域的晶粒度和晶间相富集状态影响显著;优化的Sc、Zr和Er成分配比能获得优异的晶粒细化效果,并抑制含Er相对晶界结合的恶化作用,使合金获得较高的焊接热裂抗力;焊接热裂敏感性降低的机理为合金偏析程度的降低、凝固终了温度的相对提高、细小晶粒的转动滑移和细晶晶界应力的分散。 展开更多
关键词 AL-MG合金 填充合金 微合金化 熔焊 热裂敏感性
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Effect of filler wire on the joint properties of AZ31 magnesium alloys using CO_2 laser welding 被引量:13
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作者 王红英 李志军 《China Welding》 EI CAS 2007年第2期16-21,共6页
Laser welding with filler wire of AZ31 magnesium alloys is investigated using a CO2 laser experimental system. The effect of three different filler wires on the joint properties is researched. The results show that th... Laser welding with filler wire of AZ31 magnesium alloys is investigated using a CO2 laser experimental system. The effect of three different filler wires on the joint properties is researched. The results show that the weld appearance can be effectively improved when using laser welding with filler wire. The microhardness and tensile strength of joints are almost the same us those of the base metal when ER AZ31 or ER AZ61 wire is adopted. However, when the filler wire of ER 5356 aluminum alloy is used, the mechanical properties of flints become worse. For ER AZ31 and ER AZ61 filler wires, the microstructure of weld zone slws small dendrite grains. In comparison, for ER 5356 filler wire, the weld shows a structure of snowy dendrites and many intermetallic compounds and eutectic phases distribute in the dendrites. These intermetallic constituents with low melting point increase the tendency of hot crack and result in fiagile joint properties. Therefore, ER AZ31 and ER AZ61 wire are more suitable filler material than ER 5356 for CO2 laser welding of AZ31 magnesium alloys. 展开更多
关键词 magnesium alloys laser welding filler wire
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介入导管的研究进展 被引量:11
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作者 王传栋 刘庆 +3 位作者 赵成如 刘作勤 王勤 武乐斌 《医学影像学杂志》 2003年第9期682-686,共5页
介绍了介入导管的坯管材料、球囊材料 ,导管填料 ,导管管体加工工艺 。
关键词 介入导管 医用材料 填料 焊接 表面处理
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Influences of different filler metals on electron beam welding of titanium alloy to stainless steel 被引量:10
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作者 王廷 张秉刚 冯吉才 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第1期108-114,共7页
Electron beam welding experiments of titanium alloy to stainless steel were carried out with different filler metals, such as Ni, V, and Cu. Microstructures of the joints were examined by optical microscopy, scanning ... Electron beam welding experiments of titanium alloy to stainless steel were carried out with different filler metals, such as Ni, V, and Cu. Microstructures of the joints were examined by optical microscopy, scanning electron microscopy and X-ray diffraction analysis. Mechanical properties of the joints were evaluated according to tensile strength and microhardness. As a result, influences of filler metals on microstructures and mechanical properties of electron beam welded titanium-stainless steel joints were discussed. The results showed that all the filler metals were helpful to restrain the Ti-Fe intermetallics. The welds with different filler metals were all characterized by solid solution and interfacial intermetallics. For each type of the filler metal, the type of solid solution and interfacial intermetallics depended on the metallurgical reactions between the filler metals and base metals. The interfacial intermetallics were Fe2Ti+Ni3Ti+NiTi2, TiFe, and Cu2Ti+CuTi+CuTi2 in the joints welded with Ni, V, and Cu filler metals, respectively. The tensile strengths of the joints were dependent on the hardness of the interfacial intermetallics. The joint welded with Ag filler metal had the highest tensile strength, which is about 310 MPa. 展开更多
关键词 titanium alloy stainless steel filler metal electron beam welding mechanical property
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连续油管管-管对接焊工艺方法分析 被引量:7
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作者 刘彦明 石凯 王洪铎 《热加工工艺》 CSCD 北大核心 2014年第7期186-190,共5页
在分析连续油管工况条件的基础上,考虑到连续油管的使用要求,提出了推荐的连续油管焊接操作步骤。讨论分析了连续油管焊接过程中的主要工艺参数,并对连续油管焊接工艺进行了总结。
关键词 连续油管 对接焊 焊接热输入 坡口 填充金属 焊接位置 保护气体
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L415QB/UNS S31603双金属复合管环焊缝失效原因分析 被引量:7
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作者 王斌 吴立斌 杨燕 《热加工工艺》 CSCD 北大核心 2016年第1期256-260,共5页
针对国内油气田较多应用的L415QB/UNS S31603双金属复合管环焊缝失效原因,采用金相显微镜、显微硬度计、扫描电镜和能谱仪对失效裂纹进行了形态、组织、成分分布和断口分析。研究发现,焊缝不同焊层间的组织差异,是焊缝开裂的组织因素;... 针对国内油气田较多应用的L415QB/UNS S31603双金属复合管环焊缝失效原因,采用金相显微镜、显微硬度计、扫描电镜和能谱仪对失效裂纹进行了形态、组织、成分分布和断口分析。研究发现,焊缝不同焊层间的组织差异,是焊缝开裂的组织因素;内衬与基管间贴合性能差造成的径向应力和焊缝横向应力,是焊缝开裂的力学因素。L415QB/UNS S31603复合管环焊缝焊接应采用ER309Mo L或E309Mo L填充材料,不应采用低合金E71T8-Ni1J焊材作为填充材料;焊接应选用较低热输入量的脉冲焊接工艺方法,以降低熔合比。 展开更多
关键词 复合管环焊缝 开裂失效 焊材 焊接工艺
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Review of GTAW Welding Parameters 被引量:2
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作者 Bolarinwa Johnson Kutelu Saliu Ojo Seidu +1 位作者 Godwin Idenala Eghabor Ayotunde Idris Ibitoye 《Journal of Minerals and Materials Characterization and Engineering》 2018年第5期541-554,共14页
Welding as a fabrication process is one of the vital production routes for most manufacturing industries. Several factors are involved in the choice of welding process for specific applications;notable among these are... Welding as a fabrication process is one of the vital production routes for most manufacturing industries. Several factors are involved in the choice of welding process for specific applications;notable among these are compositional range of the material to be welded, the thickness of the base materials and type of current. Most metals oxidize rapidly in their molten state, and therefore, the weld area needs to be protected from atmospheric contamination;this is achieved in gas tungsten arc welding GTAW by a shielding gas (argon, helium, nitrogen). GTAW technique is one of the major processes for joining austenitic stainless steels (ASS) and ferritic stainless steel (FSS) fabrication. However, the microstructural change that occurs during welding and at weld joint is still a major challenge today as it affects both the corrosion resistance and the mechanical properties. Therefore, this present paper reviews past research findings on GTA welding of ASS and FSS. Results of the findings have confirmed that, depending on the amount of heat input, which can be controlled by welding parameters (welding speed, voltage and current), welded joints particularly, heat affected zones (HAZs) of both grades of steels can undergo mechanical failure and can be susceptible to corrosion attack if the joints are produced with a less ideal combination of welding parameters. 展开更多
关键词 AUSTENITIC Stainless Steel (ASS) GTA welding HEAT Affected Zone (HAZ) welding Speed Voltage Current HEAT Input Shielding Gas filler Metal
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新型铝焊膏的研制 被引量:5
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作者 曾燕 陈志祥 +2 位作者 刘宏江 杨凯珍 刘凤美 《广东有色金属学报》 CAS 2006年第2期120-123,共4页
主要对组成铝焊膏的钎料、钎剂以及成膏体进行了研究,并制备出适合于铝-铝、铝-铝合金、铝-不锈钢焊接用的新型铝焊膏.该铝焊膏具有加料方便、准确,焊接性能优良的特点.
关键词 铝焊 钎料 钎剂 成膏体 焊接
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The review on Chinese welding consumables in the last decade
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作者 李连胜 李春范 赵立三 《China Welding》 EI CAS 1997年第1期4-13,共10页
In this paper the situation of Chinese welding consumables production output, exported amount, quality and varieties in the last decade was reviewed. Meanwhile, the imported production facilities for covered electrode... In this paper the situation of Chinese welding consumables production output, exported amount, quality and varieties in the last decade was reviewed. Meanwhile, the imported production facilities for covered electrodes, CO2 welding wires and flux cored wires were introduced. Also, the currently existing problems in welding consumables profession were discussed, and development trend in the future was predicted. 展开更多
关键词 welding consumables covered electrode welding wire welding flux brazingand soldering filler
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汽车加油口盖间隙面差问题分析与解决方案 被引量:4
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作者 张锦良 李阳修 +2 位作者 刘美娜 苏明 陈绍翰 《汽车工程师》 2019年第9期55-58,共4页
加油口盖的成型质量、精度以及其与侧围外板的间隙直接关系着汽车的外观品质、客户的感官质量以及产品的商品性。目前大多主机厂采用点焊加油口盖,但是点焊加油口盖存在外观不平、漆面刮伤、与侧围外板间隙面差不良等问题。通过现场和... 加油口盖的成型质量、精度以及其与侧围外板的间隙直接关系着汽车的外观品质、客户的感官质量以及产品的商品性。目前大多主机厂采用点焊加油口盖,但是点焊加油口盖存在外观不平、漆面刮伤、与侧围外板间隙面差不良等问题。通过现场和工序变量确认等方法,发现焊接变形、翻边结构以及运动间隙不足是加油口盖商品性不良的主要原因。将加油口盖连接工艺由焊接变更为包边连接,并对包边模具定位方案进行优化,解决了加油口盖外观质量不良的问题,进而提升了汽车商品性。 展开更多
关键词 汽车商品性 加油口盖 包边 焊接变形 运动间隙
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快速凝固Al-Si基粉末钎料的研制 被引量:4
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作者 袁晓光 王晓红 +3 位作者 刘彦学 黄宏军 高鹤 李青 《热加工工艺》 CSCD 北大核心 2007年第23期66-69,共4页
设计了系列铝硅基合金钎料,采用超音速气体雾化技术制备了钎料粉末,系统地研究了快凝钎料微观组织和焊接性能,优化出一种具有较高综合性能的钎料合金Al-10Si-5Cu-5Zn-0.3RE。研究表明:Al-10Si-5Cu-5Zn-0.3RE快凝粉末钎料的平均直径为0.1... 设计了系列铝硅基合金钎料,采用超音速气体雾化技术制备了钎料粉末,系统地研究了快凝钎料微观组织和焊接性能,优化出一种具有较高综合性能的钎料合金Al-10Si-5Cu-5Zn-0.3RE。研究表明:Al-10Si-5Cu-5Zn-0.3RE快凝粉末钎料的平均直径为0.11 mm,组织细小,焊接强度达到了95.8 MPa。Zn元素使快凝钎料的熔点显著降低,稀土元素明显改善钎料的润湿性。 展开更多
关键词 钎料 AL-SI合金 快速凝固 粉末 焊接性
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不同焊后热处理对7005铝合金焊接接头组织性能的影响 被引量:4
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作者 侯泽北 程龙岷 +1 位作者 刘强 杨甜甜 《热加工工艺》 CSCD 北大核心 2016年第15期52-55,共4页
采用5183、5356两种牌号的焊丝对7005铝合金分别进行了对接式填料焊接,并对焊件进行了不同工艺参数的热处理,研究了焊后热处理工艺对焊件接头组织性能的影响。结果表明:采用5356焊丝焊接的焊缝硬度要高于采用5183焊丝焊接的焊缝;T6、T7... 采用5183、5356两种牌号的焊丝对7005铝合金分别进行了对接式填料焊接,并对焊件进行了不同工艺参数的热处理,研究了焊后热处理工艺对焊件接头组织性能的影响。结果表明:采用5356焊丝焊接的焊缝硬度要高于采用5183焊丝焊接的焊缝;T6、T7热处理后焊缝的硬度均明显提高。四点弯应力腐蚀测试结果表明,采用5183、5356焊丝焊接的焊件经T6热处理后,其应力腐蚀裂缝分别在72、76 h出现,而焊件经T7热处理后,在168 h内未出现应力腐蚀裂缝。与T6热处理相比,T7热处理后的焊件硬度略低,但抗应力腐蚀性能较好。 展开更多
关键词 7005铝合金 填料焊接 T6热处理 T7热处理 四点弯应力腐蚀试验 抗应力腐蚀性能
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原油罐底板角焊缝应力分析及有效防护 被引量:3
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作者 朱德汉 《石油化工设备技术》 CAS 2000年第1期18-21,共4页
因为原油罐区部分油罐底板与罐壁角焊缝腐蚀较严重,局部出现微裂纹。本文从断裂力学方面进行理论分析,提出了有效的解决方法。
关键词 罐底板 原油罐区 罐壁 腐蚀 应力分析 防护 角焊缝 板角 断裂力学 微裂纹
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新型耐热钢的焊接与热处理 被引量:3
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作者 范长信 周荣灿 +4 位作者 姚兵印 邵天佑 唐丽英 王弘喆 张淑霞 《华电技术》 CAS 2008年第7期24-27,共4页
以华能玉环电厂主蒸汽管道P92钢焊接和热处理为例,介绍了如何解决新材料的焊接技术问题,针对国内现场焊接和热处理中存在的问题,采取了有效措施,以控制新型耐热钢的安装质量,以期为其他超超临界机组项目的焊接质量控制提供参考依据。
关键词 超超临界机组 新型耐热钢 热处理 焊接材料 焊接工艺 性能要求 质量控制
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Joint performance in laser welding Al alloy with filler wire 被引量:1
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作者 陈彦宾 李俐群 +2 位作者 彭小云 方俊飞 张雅利 《中国有色金属学会会刊:英文版》 CSCD 2005年第S2期87-91,共5页
CO2 laser welding aluminum alloy with filler wire was studied. The results indicate that the problems in CO2 laser welding of Al alloy, such as bad appearance of weld, easily excessive penetration and low strength, ca... CO2 laser welding aluminum alloy with filler wire was studied. The results indicate that the problems in CO2 laser welding of Al alloy, such as bad appearance of weld, easily excessive penetration and low strength, can be improved effectively by using laser welding with filler wire, and the maximum tensile strength of weld can reach 94% for the base metal. It also can be found that, the linear energy have great influence on the microstructure and mechanical properties of the joint. As the heat input increases, the cellular fir-tree crystals in the weld zone become sparse and the form of tensile fracture transforms from gliding fracture to brittle fracture. 展开更多
关键词 aluminum alloy laser welding filler WIRE mechanical PROPERTY
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Welding Effect at the Heat Affected Zone by Joining a Gray Cast Iron with Stainless Steel E308-16
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作者 Yajaira Curiel-Razo Enrique Curiel-Reyna +2 位作者 Minerva Robles-Agudo Alberto Lara-Guevara Ignacio Rojas-Rodríguez 《Materials Sciences and Applications》 2023年第6期336-345,共10页
Different investigations of the union of dissimilar materials such as stainless steel and different castings have been carried out, but rapid cooling immediately after welding has not been considered, in this work it ... Different investigations of the union of dissimilar materials such as stainless steel and different castings have been carried out, but rapid cooling immediately after welding has not been considered, in this work it was investigated how rapid cooling affects the metallurgical microstructure and consequently the mechanical properties. The effect of welding parameters on the microstructure and mechanical properties of the joint between dissimilar metals, an E-308-16 austenitic stainless steel and Gray Cast Iron was also analyzed. Gray cast iron samples (GCI) were fabricated, welded and cooled. The main welding parameters studied in this work are the welding technique and the type of filler electrodes. Flux-coated electrode E-308-16 was applied for this different joint. An experimental study was carried out for the analysis of welded joints of similar and dissimilar steels. The microstructure of the welded joints was analyzed using an optical microscope, in the base metals, heat affected zone (HAZ) and filler metal. The mechanical properties of the welded joints were evaluated by Vickers microhardness and tensile strength tests. The hardness profile showed differences in hardness between the base metals, the heat affected zone and the filler metal. The metallurgical microstructures observed along the welded areas corresponded to the profile. The hardness differences determined the effect on the mechanical and metallurgical characteristics of the welded samples as a result of the cooling rate differences. This research work is important because it allows us to analyze the possibility of reworking pieces of dissimilar materials by welding or, failing that, to determine if this may or may not be possible. 展开更多
关键词 Gray Iron welding Hot Affected Zone filler Metal Microstructure Dissimilar Metals
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TiNi/Nb/TC4真空电子束焊接接头裂纹 被引量:2
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作者 占字林 陈玉华 +2 位作者 孙国栋 刘长华 孙松伟 《中国有色金属学报》 EI CAS CSCD 北大核心 2018年第11期2242-2248,共7页
采用真空电子束焊接方法对3 mm厚TiNi合金与TC4异种金属进行对接焊,添加Nb为填充金属控制焊接裂纹的形成;分析了裂纹形成机理,Ti_2Ni脆性相的形成条件,接头元素分布特点及接头力学性能。结果表明:TiNi合金与TC4直接焊接易使焊接接头产... 采用真空电子束焊接方法对3 mm厚TiNi合金与TC4异种金属进行对接焊,添加Nb为填充金属控制焊接裂纹的形成;分析了裂纹形成机理,Ti_2Ni脆性相的形成条件,接头元素分布特点及接头力学性能。结果表明:TiNi合金与TC4直接焊接易使焊接接头产生裂纹,大量Ti_2Ni脆性相的形成导致焊缝中裂纹和孔洞的产生,添加Nb为填充金属有效降低接头裂纹敏感性。填充金属厚度为0.55 mm时获得无裂纹缺陷的焊接接头,Ti_2Ni生成焓较小,使TC4侧熔合线附近形成Ti_2Ni脆性金属间化合物层,焊缝中心组织Nb含量较高,接头力学性能良好,抗拉强度达到391 MPa,伸长率为2.7%。 展开更多
关键词 TiNi/Nb/TC4 异种金属 Nb填充金属 真空电子束焊 焊接裂纹
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铁路钢轨与辙叉过渡层焊接的研究 被引量:1
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作者 郭面焕 邵德春 +1 位作者 董占贵 董卫国 《材料科学与工艺》 EI CAS CSCD 1999年第S1期193-196,共4页
钢轨与辙叉的焊接 ,属于高碳钢和高锰钢异种金属材料的焊接 .由于二者材料本身的焊接性都较差 ,而且所要求的焊接工艺差异很大 ,再加上钢轨的被焊截面形状不规则 ,所以给焊接带来很大的难度 .采用手工电弧焊的方法 ,通过增加过渡层可降... 钢轨与辙叉的焊接 ,属于高碳钢和高锰钢异种金属材料的焊接 .由于二者材料本身的焊接性都较差 ,而且所要求的焊接工艺差异很大 ,再加上钢轨的被焊截面形状不规则 ,所以给焊接带来很大的难度 .采用手工电弧焊的方法 ,通过增加过渡层可降低焊接难度 ,简化焊接工艺 .对 60 0mm长的钢轨与辙叉试件进行了实焊 ,其结果达到或超过了相关标准的技术要求 ,从而证明采用增加过渡层的办法来解决高碳钢和高锰钢焊接是一种可行的办法 . 展开更多
关键词 高碳钢钢轨 高锰钢辙叉 过渡层 焊接
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GH3030高温合金激光填粉焊接工艺及性能研究 被引量:2
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作者 应俊龙 李智勇 熊曦耀 《应用激光》 CSCD 北大核心 2021年第2期252-256,共5页
激光填粉焊接技术可实现大裕度、高质量的柔性焊接,相较于传统焊接技术具有不可比拟的优势。基于GH3030高温合金开展相关工艺试验,研究了不同的激光功率、扫描速度、离焦量对焊接表面形貌、抗拉强度的影响,并分析了不同离焦量下的金相... 激光填粉焊接技术可实现大裕度、高质量的柔性焊接,相较于传统焊接技术具有不可比拟的优势。基于GH3030高温合金开展相关工艺试验,研究了不同的激光功率、扫描速度、离焦量对焊接表面形貌、抗拉强度的影响,并分析了不同离焦量下的金相组织。在激光功率2100 W、扫描速度900 mm/min、离焦量为+2 mm时,可以获得一定熔宽且均匀连续、无缺陷的焊缝;在较优的工艺参数下,焊接后抗拉强度优于母材。各工艺参数的选取对焊接接头的抗拉强度影响很大,在实现良好冶金结合的前提下,避免晶粒粗大、组织疏松是提升抗拉强度的关键。 展开更多
关键词 填粉焊接 高温合金 抗拉强度 晶粒粗大 工艺参数
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