Crack in neck of hollow shaft is a very serious malfunction, main cause of the crack include: foundry defect, centralized stress, quality problems of welding and heat treatment.
中空轴轴颈裂纹是水泥磨的严重故障。中空轴轴颈裂纹产生的原因主要有：铸造缺陷，应力集中，焊接和热处理质量问题等。
A fuzzy multicriteria modelling method of defining a structural parameter for representing the grade of welding defect damage is presented.
提出了根据模糊综合评判、定义结构参数用以表示焊接缺陷损伤程度的方法。
This paper introduces the defect causes by the equidistance welding points of fixture tools, safty analysis and treatment for the welding points.
本文介绍了工卡具等焊迹点缺陷形成的原因、安全性分析及焊迹的处理方法。
Grey spot has become the most conspicuous defect in resistance welding joint of the structure of continuous welded rail track.
灰斑已成为无缝线路钢轨结构接触焊接头最突出的缺陷。
Ultrasonic defect detection inspection shall be carried out for welding seams and defects shall be removed. the excess weld metal of welding seam must be eradicated and abraded after welding.
焊缝须进行超声波探伤检查并清除缺陷，焊后对焊缝余高进行铲除并磨平。
Characteristics, principle, process and application result of the technique to use melting diffusing welding to repair defect of gray iron castings was described.
介绍了溶解扩散焊修复灰铸铁铸件缺陷技术的特点、原理、工艺及应用效果。
For welding the extra thick plate of low alloy high strength steel, due to the influence of welding stress, it relatively difficulty for controlling the defect and deformation.
低合金高强钢特厚板的焊接，由于焊接应力的影响，在控制缺陷和变形方面都比较困难。
Taking a defect example that manhole is close to vertical welding this article introduces how to treat the defect in replacement of partial bottom wall.
以罐壁开孔距纵向焊缝过近缺陷的处理为例，介绍底圈局部壁板的更换方法。
It easy to occur defect on the back of bead in pressure pipe TIG welding, which can be solved by using the anti, direction wire feeding method successfully.
压力管道TIG焊在焊接中焊道背部易出现缺陷，用反向送丝的方法成功地解决了这一问题。
The finite element analysis of the bridge-erecting machine 'beam under welding defect conditions is conducted with ANSYS program, which provides a basis for the structural safety assessment of beam.
以A NSYS为分析工具，对铁路架桥机导梁焊接缺陷进行有限元分析，为导梁进行结构安全评定提供依据。
Lastly, it is stressed that the defect of incomplete fusion has the greatest impact on the welding quality.
最后强调以未熔合缺陷对焊接质量影响最大。
In this article defect occurring reason was analyzed and hold that the defect was caused by the special welding structure of the stainless steel clad plate and fabrication process.
文中对缺陷产生的原因进行了分析，认为缺陷系不锈钢复合钢特殊的焊接结构和制造工艺所致。
And study the influence of welding speed and active gas for welding porosity defect.
着重研究了焊接速度与活性气体对气孔形成的影响关系。
Method of calculation of defect site by ultrasonic inspection of indined plane welding has been described in detail, and formula have also been proved.
详细介绍了在斜面焊口超声波探伤中采用声程调节扫描比例进行缺陷定位的计算方法，并给出了计算公式。
This paper researches the effects of undercut defect on stress concentration in welding joint of pressure pipe by means of the finite element method software ANSYS.
从数值模拟入手，采用大型有限元软件A NSYS研究了不同尺寸、不同位置的咬边缺陷对压力管道焊接接头应力集中系数的影响。
The defects of welding joint for Marine platform structure, the harm and the cause of every defect were analyzed.
分析了海洋平台结构焊接接头的缺陷及各种缺陷的危害、成因。
Special glue is used on the surface of specimen , forming welding defect, which has little influence on microstructure and mechanical properties of joint.
待焊表面涂抹专用密封胶后，可形成结合线伸入缺陷，但对接头组织和力学性能影响不大。
The results showed that the forming of crack was mostly made by the interface defect between overlaying welding layer and matrix.
结果表明，堆焊层与基体的界面缺陷是裂纹形成的主要原因。
The lead free high temperature solder has the advantages of higher melting point, good mechanical property, less welding defect and high welding reliability.
本发明无铅高温焊料的优点为：熔点较高、机械性能好、焊接缺陷少、焊接可靠性高。
Aiming at the defects of the welding lines, the author adopts the method of projection intercept to calculate the length of the defect exactly and effectively.
本文针对焊缝等缺陷利用投影截距的方法，准确高效地计算出了缺陷的长度。
The results show that the partial unmelted region, casting defect structure and secondary crack form in the welding seam, which result in the low stress breakage of the samples.
结果表明：在焊缝区域内存在着局部未熔区以及铸造疏松组织和二次裂纹等缺陷，这是导致试样低应力断裂的根本原因。
Used for repairing welding on the defect of nodular cast iron pieces.
用于球墨铸铁缺陷的补焊。
Used for repairing welding on the defect of gray cast iron pieces.
用于灰口铸铁缺陷的补焊。
Used for repairing welding on the defect of gray cast iron pieces.
用于灰口铸铁缺陷的补焊。
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