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1·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。

2·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。

3·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。

4·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。

5·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。

6·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。

7·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。

8·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。

9·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。

10·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。