Influence of the relative width of weld metal and strength of weld metal wes researched.
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。
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.
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。
The formulae for calculating SIF and fatigue life of surface crack at weld toe of the high-strength steel under the combination stresses were given out.
给出了高强钢焊趾表面裂纹在压弯组合应力下应力强度因子及其疲劳寿命计算式。
This paper analyses the cause of strength descent of brazing weld, and proposes improving measures.
本文分析了钎焊焊缝强度下降的原因，并提出改进措施。
The formulae for calculating SIF and fatigue life of surface crack at weld toe of the high-strength steel under the combination stresses have been presented.
给出高强钢焊趾表面裂纹在压弯组合应力下应力强度因子及其疲劳寿命计算式。
It's a new method to increase fatigue strength of welded joints and structure by peening toe of weld with ultrasonic peening equipment.
使用超声波冲击焊趾来提高焊接接头及结构的疲劳强度，是一种国际上刚刚出现的新方法。
The microstructure and fine structure of weld fusion zone for high strength fine grain steel were studied.
研究了高强度细晶粒碳素钢焊接接头熔合区附近的显微组织及精细结构。
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.
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。
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.
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。
Superhigh strength steel AF1410 is a type of new aviation steel, which is good for resisting stress corrosion and is not difficult to weld.
AF 1410超高强度钢是一种抗应力腐蚀和焊接性能较好的新型航空材料。
The results show the weld has good properties in strength and toughness satisfying the welding demands of pipeline.
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 hardness of weld region shows'less variation than base metal and the ultimate tensile strength of TMAZ is almost 20% improvement.
焊缝区的硬度值波动范围很小，抗拉强度比母材增加约20％。
But the mechanical properties of weld joint have influence on selection of welding technology and welding material, and on strength calculation of construction.
而接头性能直接影响着结构焊接工艺的选择和强度计算。
The strength mismatch of girth weld is a concerned problem of study and application of pipeline.
环焊缝强度匹配是天然气管道研究与应用的热点问题。
The effect of transformation temperature of weld metal on the residual stresses and the fatigue strength of welded joints is analyzed based on their test.
通过焊缝金属相变温度和残余应力测试以及焊接接头疲劳强度试验，分析了焊缝金属相变温度对焊接残余应力和焊接接头疲劳强度的影响规律。
The parameters that deeply effect on the bending strength were porosity, energy input and the overlapping of weld metal.
明显地影响抗弯强度的参数是气孔，输入能量的大小和焊接金属的重叠性能。
Compared with conventional structural steels used in Bridges, high performance steel (HPS) provides higher strength, improved weld ability, enhanced fracture toughness and weathering characteristics.
与传统桥梁用钢相比，高性能钢(HPS)在强度、可焊性、断裂韧性、延性和耐候性方面都有很大的改善。
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.
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。
Flanging, smooth flow, the strength of the weld.
外翻边，水流通畅，焊届强度大。
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.
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 LB-52NS electrode is used in our country to weld both A131 and A537 offshore platform steel, so the strength matching of their welded joints is different.
在我国，海洋平台钢A131和A537均用LB-52NS焊条焊接，因而这两种材料焊接接头的强度匹配不同。
Campared with the original composition, the new composition system has more steady flowing, better article glossiness and flexibility, and higher fillet weld strength.
在加工过程中与原配方比较，料流稳定，提高了制品的光泽度、柔韧性及焊角强度。
The strength of fillet welding joint is related not only to the fillet weld size, but also depends on the base metal strength matching.
角焊缝的强度不仅与焊脚尺寸有关，还取决于焊缝金属与母材强度的匹配。
Its results show that with decreasing the relative width of under-matching weld metal, the tensile strength of welding joint increase.
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；
The results of performance measurement test show that tensile-strength, contraction of cross sectional area, elongation percentage, dynamic ductility of the weld all exceed their base metal.
焊后试件的性能测试结果表明，焊接接头的拉伸强度、断面收缩率、延伸率及冲击韧性均已超过母材。
Many aircraft and airspace parts are TIG welded because of the reliability, clearance, and strength of the weld.
很多飞机和航空部件都是用氩弧焊焊接的因为它可靠，清洁，强度高。
There is no need to weld the joint thoroughly for the cruciform joint. But if the dimension which is not welded is too large. that will make fatigue strength reduce.
厚板焊接结构的角焊缝，多数情况下没必要完全焊透，但是，如果未焊透部分尺寸过大，就会使焊接接头的疲劳强度大幅度降低。
A new large heat input welding high strength low alloy steel with low susceptivity to weld cold cracking was developed and the cold strain aging behavior was investigated.
研制了一种低焊接裂纹敏感性高能量输入焊接用低合金高强钢，并研究了其冷应变时效行为。
During the manufacturing of SSAW pipe for Sudan pipeline, J557 electrode shall be applied as bottom weld materials according to the matched requirement of grade and strength.
在苏丹管线用螺旋埋弧焊管生产过程中，根据钢级及强度匹配要求，选用J557焊条作为打底焊材料。
The tensile strength and the elongation percentage of the parent metal and the weld zone increased slightly.
冲击处理使焊缝区和母材区的强度和伸长率均有所增加。
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