正常焊接状态时变频控制交流脉冲频率。
Varying frequency is used to control AC pulse frequency in normal welding state.
管线清管的目的是清除焊接时留在管道内的泥沙、焊渣等杂物，为管线测径和管线正常运行提供保障。
The purpose of the pipeline pigging is clear in pipe welding of mud, welding slags sundry, for pipeline caliper and normal operation of pipeline to provide security.
对导轨的安装和焊接采用了合理的工艺，还对导轨进行了防腐处理，从而保证了清污机的正常运行。
To ensure the normal running of the screen cleaner, more reasonable technology on installing and welding the lead rail were adopted, and anticorrosion treatment of the lead rail was carried out.
特种化工设备焊接质量的好坏直接影响到设备的正常运行和成品的质量。
Normal running of chemical equipments and quality of products are effected by welding quality of special chemical equipments.
压力管道在役焊接修复时间短，速度快，对管道正常运行影响小，有巨大的经济效益和广阔的应用前景。
Welding repair onto in-service pressure pipelines has good economic efficiency and application trend, because it is much quick and has little effect to normal run of pipeline.
经过调研和反复现场勘察，确定的总体施工方案为：挖明沟排水，作业带晾晒，正常组对焊接，沉管下沟。
Therefore the general construction process scheme is worked out as follows: open trench drainage, work site dried in the sun, conventional butt welding, and pipe laid down into trench.
正常条件下，在储存、焊接、处置残留物时，钍钨电极的外辐射可以忽略。
External radiation from thoriated tungsten electrodes during storage, welding, or disposal of residues is negligible under normal conditions.
焊机运行过程中，送丝电机或焊接小车会出现无规则涌动现象，使焊接过程难以正常进行。
In the welding machine processing, the feeding wire moto or welding tractor will appear the non-rule surges phenomenon, which will cause the welding difficult.
在进行交流TIG焊时，需要增加一些较复杂的控制方式，如：阴极雾化作用、消除和减小直流分量、稳定电弧等，以保证焊接的正常进行。
In AC TIG welding, it needs add some complex control method to ensure the quality of welding, such as negative-pole atomization affects, D. c. of elimination and reduce, and arc stabilizing etc.
在我看来，一个铝框焊接是一种正常的艺术作品在没有平等。
In my opinion, an aluminum frame properly welded is a work of art that has no equal.
在ERW焊管机组生产中，带钢的硬弯大小直接影响焊管机组的正常运行及焊接钢管的质量。
During the production of ERW steel pipe mill, the size of steel of strip hard bent influences the running of pipe welder and the quality of the pipe.
对间断焊焊接接头的金相分析表明其金相组织正常，内压试验结果表明该结构能安全运行。
The metallographic analysis shows that the metallurgical structure is proper. The results of internal pressure test indicate that the hot tap structure can work safely.
如果CroMo框架焊后不热处理，关节受高温焊接过程中退火或正常化。
If a CroMo frame is not heat treated after welding, the joints subjected to heat during the welding process are annealed or normalized.
详细分析了影响焊接电源正常工作的干扰来源，提出了在设计焊接电源时防止干扰源的措施。
The article particularly analyzes the interfere source affecting the operation of power source, and takes the measures that avoids the interfere source as designing the power source.
详细分析了影响焊接电源正常工作的干扰来源，提出了在设计焊接电源时防止干扰源的措施。
The article particularly analyzes the interfere source affecting the operation of power source, and takes the measures that avoids the interfere source as designing the power source.
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