焊接接头

When the weld metal deforms without substantial interaction with surrounding base material, an expression of a modification factor is presented, which can be used to calculate and analyze the effect of weld mechanical heterogeneity on the crack growth driving force.

在不考虑焊缝应变与母材应变相互干涉影响的前提下，本文给出了一个可以分析焊接接头各种力学性能不均匀对裂纹扩展驱动力影响的修正系数计算表达式。

8 After welding, pickling and passivating treatment of weld joints of austenitic stainless steel pipe shall be carried out.

7.3.8 奥氏体不锈钢焊接接头焊后应按设计文件规定进行酸洗与钝化处理。

There are three factors resulting in the improvement of the fatigue strength of peened joints.

本文对超声冲击处理提高焊接接头及结构疲劳强度的机理进行了全面的研究。

The results show that the fatigue life of the peened joint is 20～30 times as long as the as-welded joints .Therefore,the improvement of the fatigue strength of welded joints by ultrasonic peening is remarkable.

试验结果表明：超声冲击方法对焊接接头疲劳强度的改善效果十分明显，能够提高疲劳寿命20～30倍以上，极具实用价值。

ABSTRACT Ultrasonic peening technique is studied for improving the fatigue strength of the welded joints and structures.

本文对改善焊接接头及结构疲劳强度的超声冲击处理技术进行了全面研究。

For evaluating the ultrasonic peening performance carried out by this equipment, the fatigue tests is performed.

利用所研制的压电式超声波冲击实验装置，验证了超声冲击法改善焊接接头疲劳强度的实际效果。

It is a new method to increasing fatigue strength of welded joints and structure by peening welded toes 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，是国际上刚刚出现的一种新方法。

It's a new method to increase fatigue strength of welded joints and structure by peening toe of weld with ultrasonic peening equipment.

摘 要：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。

It is a new method to increasing fatigue strength of welded joints and structure by peening welded toes with ultrasonic peening equipment.

摘 要：使用超声波冲击焊趾来提高焊接接头及结构的疲劳强度，是国际上刚刚出现的一种新方法。

The number of fixed welding joint shall be more than 40% of the total sampled number.

固定焊接接头应占抽查数的 40%以上。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。