308m^3高炉钢砖托架座的改进

根据高炉抢修时的现场条件，对钢砖托架座现场焊接方式进行分析、改进，减少了仰角焊，消除了电焊工的施工难度，保证了焊接质量，提高了焊接效率，节省了抢修时间。     

非熔化极氩弧焊在大轴修复上的应用

介绍了一种焊接法修复风机轴的新工艺。通过对大型风机轴母材的焊接试验分析,确定焊丝和焊接工艺,并采用精细的研磨工艺,使得风机轴快速完好修复。不仅缩短了抢修时间,而且大幅降低了备件成本费用。     

大口径管道带水抢修

包头地区1996年5月3日发生6.4级强烈地震,给包钢生产造成重大损失,地震发生后,包钢生产用动力系统发生多起事故.本文针对4#高炉工业回水管道(φ1220×10)震后发生断裂,如何在保证不停止生产的前提下,采取什么措施进行管道带水抢修进行了阐述,本文是经过现场抢修过程总结而来,对今后大口径管道带水抢修提供了宝贵的经验.     

宝钢分公司4号高炉炉壳现场焊接技术

介绍了宝钢分公司4号高炉炉壳现场焊接的工程特点及难点,分析了现场需要解决的焊接技术难题,并采取了相应的技术措施及质量管理措施,取得了较好的效果.总结了宝钢分公司4号高炉现场焊接技术经验.     

汽轮机油系统大火的扑救及灾后抢修案例

介绍了作者参与指挥的一次汽机油系统大火扑救及灾后的抢修过程,并总结了预防与现场扑救此类火灾的经验教训。     

株硬抢修进口设备保生产

株洲硬质合金集团有限公司硬质合金深加工厂顺利完成抢修进口设备，确保生产有序进行。 不久前，该厂一台数控设备忽然停止运转，由于该设备一旦停开，将直接影响产品的生产。株硬动力供应中心机修车间四班二级操作能手王辉接到硬质合金深加工厂紧急抢修委托单后，优先满足紧急抢修的需求，立马赶到硬质合金深加工厂现场查看和判断。     

特殊条件下管线钢管自动环缝焊接性研究

根据海外管线钢管用户需求,针对典型规格X70M大口径UOE管线钢管,在不超过0.25 kJ/mm超低热输入以及焊丝高强匹配条件下进行熔化极气体保护自动环缝焊接。通过研究实际焊接过程中环焊接头冷裂纹敏感性、焊后环焊接头强化、硬化与脆化倾向,全面评价X70M管线钢管在这种具有加速失效特征的特殊焊接条件下的环缝焊接性。同时,将特殊条件下X70M管线钢管接头使用性能特征与现场施工正常主流焊接工艺条件下的接头性能指标进行比较,从而证实了X70M管线钢管良好的环缝焊接性,并指出了特殊条件下管线钢管自动环缝焊接性评价结果对现场施工焊接的重要指导意义。结果表明,即使在特殊苛刻焊接条件下,X70M管线钢管焊接性仍能满足现场施工焊接要求。     

手工电弧焊接QU120钢轨实践

分析了Qu120钢轨在使用过程中接头断裂的成因，结合现场实际介绍了钢轨手工电孤焊接方法、焊接材料、焊接工艺、实际操作体会，可供同类型的钢轨整体焊接借鉴。     

ZG20Mn铸钢吊挂连接座焊接工艺的研究

介绍ZG20Mn铸钢吊挂连接座的焊接研究,提出了与Q345R转炉炉壳和转炉托圈的焊接工艺,采用E5015(J507)焊接材料,在预热和保温冷却下,进行结构焊接技术。文章可供大型结构现场焊接时参考。     

1000m^3球形氧气储罐现场组焊技术

文章介绍了球形储罐的结构类型,详细分析了球形储罐焊接常见的质量缺陷,并描述了球形储罐现场组焊的施工工艺流程以及焊接操作要点,提供了详细的焊接参数,可作为同类产品的施工参考资料.     

不锈钢复合板氨水储罐的焊接

分析了Q235 304不锈钢复合板的焊接性。对复合材料的焊接工艺进行了评定试验。确定了基层和复层分别焊接、不添加过渡层的焊接工艺。施焊过程中通过严格执行工艺规范，既保证了焊接质量又提高了焊接效率．设备运行检验结果表明。焊接工艺合理，焊接质量满足设计要求。     

Research on the Welding Process of 590MPa Grade High Strength Automobile Beam Steel

590 MPa automobile beam steel strips are used mainly to manufacture the longitudinal beam of trucks.It’s welding properties are critical to the safety of truck.The microstructure and mechanical properties of welding joints processed by CO 2 arc welding with different welding parameters were studied.The results showed that the welding joints were weak when welding heat input were small and the non metal inclusions were found in the weld joints when welding heat input are big.The quality of the welding joints is good enough at 170A of the arc current and 24V of the arc voltage.Keeping the other welding parameters fixed,the incomplete fusion defect occurred in the welding joint with backward welding,but the quality of the welding joint is good with forward welding.     

浅谈铝合金的焊接

就铝合金的焊接与铆接进行了比较，并指出了铝合金焊接的特点。介绍了常用的铝合金焊接方法及提高铝合金焊接接头机械性能的多种途径。同时，对铝及铝合金的焊接趋势进行了展望。     

锅炉火箱内壁腐蚀坑的特殊处理

介绍了焊条加长,深孔补焊技术。通过焊接性分析、焊接试验、焊接工艺评定,确定了合理的焊接工艺参数;几台机车锅炉火箱内壁腐蚀坑的问题得到了解决,切实可行,取得了效果。     

钛设备制造中焊接裂纹形成机理及防范对策研究

结合近几年钛材设备的制造与焊接实践，分析研究了其焊接过程中易于发生的主要且危害性最大问题焊接裂纹的形成原因及其防范措施。尤其对近期发现的一种新裂纹(焊接循环温变裂纹)，进行了初步研讨。     

钢轨气压焊接头断裂分析

对胶济线K247 975处气压焊断裂接头进行宏观检查、显微形貌与成分分析，认为组织为莱氏体的异种金属物是断裂源，断裂原因是人为熔入铸铁块所致．提出实施小型气压焊接应避免过度加热，杜绝在焊接头进行焊后火焰修补及填充其它金属物。     

全自动横缝焊机在热风炉安装中的应用

简要介绍了GCHH-11横缝埋弧自动焊机的焊接方法及工艺要求,首次工程实践应用于新钢8号高炉热风炉安装工程,其焊缝外观均匀美观,内部质量优良.     

运用堆焊工艺修补铝电解重型钢轨局部压馈的实践

介绍了铝电解轨道接头压馈的情况及产生的主要原因，通过对其材料的技术性能，钢的焊接性能的分析，确定了运用手工焊的方案和焊接材料的选择以及焊接施工的工艺。通过实践证明了该技术的可行性。     

Influence of the stress state on the structure and properties of welded steel and alloy structures

The residual stress due to welding in steel and alloy structures is analyzed. The greatest residual stress is produced by cooling of the welded structure. The results of calculations are in satisfactory agreement with the experimental deformation of the structure in welding on a test bench. The tests reveal the direction of the internal stress and permit assessment of the geometry of parts on the basis of a model of the temperature fields in the butt welding of steel and titanium-alloy workpieces. A coercimeter may be used to assess the stress state of the material and its defect content. By that means, it is possible to predict the structural state and properties of weld joints. The dynamics of welding deformation may be understood on the basis of the internal residual stress and the structural transformations produced by the welding process.     

Quantitative evaluation of softened regions in weld heat-affected zones of 6061-T6 aluminum alloy—Characterizing of the laser beam welding process

In welding 6061-T6 aluminum alloy, softening caused by the dissolution of strengthening β″ (Mg₂Si) precipitates occurs in heat-affected zones (HAZs). Laser beam welding is advantageous in view of narrower softened regions. The width of the softened region in a laser beam weld with a welding speed of 133 mm/s is 1/7 that of a tungsten inert gas (TIG) weld with a speed of 5 mm/s. The hardness distributions and width of softened regions in the HAZ have been quantitatively predicted to characterize the laser beam welding process. To this end, a kinetic equation describing the dissolution of age precipitates has been established and has been applied to 6061-T6 aluminum weldments. The hardness profiles and the width of softened zones have been successfully predicted in both welding processes. Prediction of the width of softened regions with varying power inputs and welding speeds reveals that a high energy density and a high welding speed in laser beam welding result in significantly narrower softened regions, in which the width is insensitive to variations in welding parameters compared to that of TIG welding.