结果表明，焊缝存在的未焊透缺陷不影响管道的安全运行。
The results showed the existence of the flaw would not effected the safe operation of the piping.
采用有限元方法对一条含未焊透缺陷的压力管道进行了强度分析与安全评定。
By using finite element method, a pressure piping with incomplete welding flaw was analyzed in strength and assessed in safety.
介绍了全焊透t型角焊缝超声波探伤的两种方法：单直探头法和单斜探头法。
Two methods for ultrasonic flaw detection of T-fillet welds with complete fusion are presented, i. e. Single straight probe and single tilting probe techniques.
基于大量计算数据，拟合得出整圈未焊透三通量纲一塑性极限内压工程估算公式。
Based on plenty of account data, engineering estimated formulas for plastic limit internal pressure were fitted for welded pipe branch junction with incomplete penetration along intersecting line.
从现场施工情况分析，焊接的内部缺陷主要有未焊透、未熔合、夹渣和气孔等几种。
Based on the analysis of site welding, the main welding defects are lack penetration, lack fusion, slag inclusion and porosity.
焊接过程电弧稳定，焊接接头熔合良好，未见裂纹、 未焊透、夹渣、气孔等缺陷。
This process showed a stable arc, good welding joints without any gas pores and cracks.
本文根据脉冲等离子弧焊接的特点，研制了一种反馈控制系统，用以控制焊缝的焊透质量。
On the basis of the characteristics of pulse plasma arc welding, a feedback control system has been developed for controlling tne penetration of welds.
铣边工艺被广泛用于螺旋缝埋弧焊管生产，但控制不好会导致焊管出现焊偏、未焊透等缺陷。
The edge milling process is widely used for manufacture of SSAW pipes. However, in case that proper control is not ensured, defects like welding misalignment or non-through-welding may be caused.
节点中的焊接宜采用完全焊透的坡口对接焊缝连接，当采用双面角焊缝连接时，可按等强设计。
And the welding connecting of them are advised to use slope butt weld that are fully welded, but when the double-sided fillet weld is used, they should be design on equal strength.
结果表明，在保证试件完全焊透的情况下，降低电子束的线能量，可在一定程度上提高接头的强度；
Some pores appeared mainly near in the bond line, but porosity can be suppressed to a great extent by increasing welding speed or electron beam scanning.
采用与模拟一致的工艺参数对铝合金板材分别进行点焊实验，制取接头低倍金相照片，并测量熔核直径和焊透率。
Do spot welding experiments to aluminum alloy plate in the same condition of simulation, prepare low magnification metallographic photos of joint, and measure nugget diameter and penetration rate.
不锈钢管件的定位焊起弧和结尾处应圆滑过渡，焊道不能太高，必须保证熔合良好，以防产生未焊透、夹渣等缺陷。
The positioning welding stainless steel pipe shall be smooth transition arc and weld end, can not be too high, must ensure good fusion, produce unweld, slag and other defects in case.
对接焊缝可评定全焊透和部分焊透对接焊缝和角焊缝，当角焊缝是产品的主要焊接接头形式时，需要用角焊缝试验评定。
Butt welds qualify full and partial penetration butt welds and fillet welds. Fillet weld tests shall be required where this is the predominant form of production welding.
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。
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.
通过对13 -5型马氏体不锈钢焊接接头进行等离子弧清根及碳弧气刨清根的比较，证明等离子弧清根对全焊透焊缝实施背面清根是可行的。
By comparing backgouging of plasma arc with carbon arc to the welded joint of 13-5 martensitic stainless steel, the backgouging of plasma arc is proved feasible for the full penetration weld.
本课题在分析常规弧焊技术特点的基础上，选取熔透式低频直流等离子弧焊电源作为成形的热源。
In basis of analyzing the features of the conventional arc welding technology, a DC low-frequency plasma welding power with fusion penetration is selected as the heat source for metal forming.
对脉冲TIG焊未熔透型熔池在脉冲峰-基转换期间熔池三维形态变化行为进行了定性的分析，并从力和能量角度建立了未熔透熔池液面形态的数学模型。
The qualitative analysis is carried out on the behavior of the partial penetrated weld pool with welding current changing from pulsed peak value to base value during pulsed TIG welding.
针对低碳钢t IG焊电涡流传感熔透控制，设计了一套计算机控制的研究装置。
A computer control system for research is designed in this paper considering the weld penetration control on mild steel in TIG welding with electro eddy sensor.
采用合理的焊前表面处理工艺、全熔透焊接可获得无气孔的焊缝。
The weld can performed free of porosity for full penetration weld when proper surface treatment processing prior to welding is employed.
目前，国内大跨径悬索桥钢箱梁大多为全焊结构，具有结构复杂、熔透焊缝多，制造难度大等特点。
The domestic steel box beam for long-span suspension bridge is mostly welded structure at present, which features complex structure, a great deal of penetration welds, difficult manufacture.
目前，国内大跨径悬索桥钢箱梁大多为全焊结构，具有结构复杂、熔透焊缝多，制造难度大等特点。
The domestic steel box beam for long-span suspension bridge is mostly welded structure at present, which features complex structure, a great deal of penetration welds, difficult manufacture.
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