The tests show: there are steady arc burning, fully fused weld joints, good connection between base metal and weld joint, no air bubble, cracks etc.
试验过程电弧燃烧稳定,焊接接头充分熔透,母材与焊缝连接良好,未见气孔、裂纹等缺陷。
The effect of crack depth, crack shape, wall thickness ratio, the number of cracks etc. on singular stress field near the crack tip is investigated.
探讨了单裂缝与均布多裂缝情况下,裂缝深度、裂缝形状,厚壁筒壁率、裂缝数目等特性参量对裂缝尖端附近奇异场的影响。
From the respects of the design, raw materials and construction etc., the specific measures of controlling temperature shrink cracks have been put forward.
从设计、原材料、施工等方面,综合性提出了控制温度收缩裂缝的具体措施。
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