结果表明，焊缝强度对残余应力影响较大。
The results show that the material mismatching has a great effect on residual stress distribution.
且随着焊缝强度增加，热影响区纵向残余应力增加。
With the increase of yield strength, the longitudinal residual stress of HAZ increases.
环焊缝强度匹配是天然气管道研究与应用的热点问题。
The strength mismatch of girth weld is a concerned problem of study and application of pipeline.
本文分析了钎焊焊缝强度下降的原因，并提出改进措施。
This paper analyses the cause of strength descent of brazing weld, and proposes improving measures.
硬质合金钎焊后进行淬火、回火处理，焊缝强度明显下降。
After cemented carbide brazed is quenched and tempered, the strength of welding stam descend obviously.
接头延伸率的改善同热影响区冷变形程度的减弱及焊缝强度、应力水平同母材趋于一致有很大关系。
Improvement of elongation of joint is related to weaker cool deformation degree of heat affect zone (HAZ) and uniformity of strength and stress level between weld and base metal.
梁翼缘处的焊缝强度是决定狗骨式刚性连接节点性能的主要因素，只有具有良好的焊缝质量才能发挥狗骨的作用。
The welding seem stress of beam-flange is the major factor which decides the behavior of dog-bone style rigid joint and only the better welding can exert the function of the dog-bone.
研究了焊缝金属相对宽度和焊缝金属强度对接头性能的影响。
Influence of the relative width of weld metal and strength of weld metal wes researched.
由于在焊缝部位存在焊接缺陷，采用传统的建立在构件无缺陷、无裂纹基础上的强度理论进行设计计算时，往往不能确保起重机在额定载荷下使用的安全性。
Since there are weld defects in welds, using traditional strength theory based on no defect and no crack to design, crane's security in rating load can't be insured.
合理的焊缝布置与产品的质量、成本、生产率以及工人的劳动强度等都有密切的关系，简便可靠的焊接工艺是获得优质产品的保证。
There are affinity among the fitting welding line position, quality, cost, production, working intensity, and the simple and reliable welding technics insures the high quality of products.
试验结果表明焊件的疲劳寿命可以通过打磨焊缝得到改善，尤其对于高强度钢焊件。
The experimental results show that the fatigue life of steel welded joints can be improved by grinding the weld bead, especially for the higher strength steel.
最后，对疲劳试验中有关裂纹以及影响焊缝疲劳强度的主要原因进行了探讨。
At last, the fatigue crack in the experiment and the main influential factor of fatigue strength of fillet welding seam was studied.
以工程中常用的斜对接焊缝的研究为例，说明了力学强度理论的正确应用方法。
This article explained the correct application of the theory of strength through using the commonly used bevelled halving welded seam as an example.
且注入剂量不同，其焊缝的剪切强度存在着较大差异。
And there is a distinct difference between the shear strength of welding seams with different implantation fluence.
结果表明：随低强焊缝金属相对宽度变小，接头抗拉强度增大；
Its results show that with decreasing the relative width of under-matching weld metal, the tensile strength of welding joint increase.
研究结果表明，焊缝具有优良的强韧性匹配，焊接接头强度及冲击韧性均满足管线钢工程焊接技术条件。
The results show the weld has good properties in strength and toughness satisfying the welding demands of pipeline.
分析了强度匹配对角焊缝设计的影响，建立了角焊缝焊脚尺寸与板厚，强度匹配系数之间的关系，讨论了强度匹配选择的依据。
The influences of strength matching on fillet weld were analyzed. The relationships among fillet weld size, thickness of base metal and matching coefficient of strength were established.
焊缝区的硬度值波动范围很小，抗拉强度比母材增加约20％。
The hardness of weld region shows'less variation than base metal and the ultimate tensile strength of TMAZ is almost 20% improvement.
结果表明，锚拉板区域各条主要焊缝都不同程度地存在着焊接残余应力，局部地方接近屈服强度。
The results of the test show that there are different degrees of welding residual stress in main welding lines and some are close to yield strength.
由于镁合金不填丝的TIG焊接接头强度低，焊缝表面成型不好，所以，镁合金的填丝tig焊接方法不可避免。
Because TIG welded joints without filler wire always hold low strength and poor formation, tungsten inert gas welding process with filler wire is inevitable.
冲击处理使焊缝区和母材区的强度和伸长率均有所增加。
The tensile strength and the elongation percentage of the parent metal and the weld zone increased slightly.
并指出对焊缝的选择，既要考虑连接强度，又要考虑加工的可能性。
The paper points out, that both joint strength and weldability should be considered, while selecting welds.
当磁感应强度和频率匹配合适时，焊缝成形良好，焊缝组织几乎为细小的等轴晶。
With optimum magnetic intensity and frequency, the weld microstructures were almost fine equiaxed grains and the weld shape was.
结果表明，通过外加横向磁场对熔池进行搅拌，可以使焊缝晶粒得到细化，进而使其抗拉强度和硬度等力学性能得到改善；
The results show that transverse magnetic field can refine the primary crystallization structure by electromagnetic stirring and improve the ultimate strength and hardness of the welded joint.
其端部斜面焊缝结构的抗疲劳强度比对接焊缝结构高，且不会发生一次性脆性破坏；
The fatigue resistance of the scarf weld in the end of the vessel is stronger than that of the butt weld.
研究了元素C、V对高强度奥氏体不锈钢焊缝金属的强化作用。
The strengthening effects of C and V on high strength austenite stainless steel welds were studied.
中强匹配接头蠕变断裂位置在远离焊缝界面的低强度母材区，呈延性断裂性质。
However, the creep fracture of medium strength match joint, located in the low strength base metal remote from the weld interface, showed a ductile fracture character.
结果表明，光束偏移量对激光焊缝宏观形貌有很大的影响，而对焊缝杯突值及抗拉强度无明显影响。
The results show that beam offset can greatly affect the macro performance of Laser tailor-welded weld , then affect the cupping Test value and tensile strength unconspicuous.
介绍一种利用充电电动螺丝批改制的轻便手持式超声波探头移动器，可辅助检测人员进行钢板对接焊缝的超声波检测工作，从而提高检测工作效率、减轻工作强度。
A moving utensil for portable ultrasonic probe which is made of chargeable electronic screwdriver is introduced, and it can be used to assist detector to detect steel butt-joint welding seam.
采用埋弧焊方法，通过改变焊丝铜含量来改变焊缝金属中的铜含量，研究铜对高强度低合金钢焊缝金属韧性的影响。
In this paper, the effect of copper content on the weld metal toughness in SAW of HSLA steels was studied by changing the copper content in welding wire.
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