The results showed that the failure of spiral welding pipes was mainly caused by piled solid, the increase of the water in solid and th...
失效分析结果表明，螺旋焊管焊缝断裂主要是由于管道附近泥浆化趋势、较高的堆土以及焊缝缺陷造成。
The high frequency welding procedure and its forming fundamental of spiral fin pipe is introduced.
介绍了螺旋翅片管高频焊接工艺及其成型基本原理。
The end surface of spiral channel is sealed by welding, therefore the sealing performance is good with reliable structure.
螺旋通道的端面是焊接密封的，密封性能好，结构可靠。
The reason of lower welding qualified rate of high frequency welding spiral fin pipe is analyzed.
分析了高频焊接螺旋翅片管焊接合格率偏低的原因。
In the production of spiral weld pipe, the quality of the online automatic submerged arc welding is of significant importance to the final steel pipe product.
在螺旋焊管的生产过程中，在线埋弧自动焊的焊接质量对最终钢管产品的质量具有十分重要意义。
It will produce magnetic field due to affection by direct current welding power supply during the welding of spiral submerged arc welded pipe. It will still remain residual magnetic.
螺旋埋弧焊钢管焊接过程中因直流焊接电源的影响会产生磁场，焊接结束后仍有剩磁存在。
To adopt milling machines to prepare strip edges and groove to give good condition for forming and welding of spiral submerged arc-welded pipe.
在螺旋焊管生产中采用铣边机铣削带钢边缘和坡口，为螺旋焊管成形、焊接创造了有利的条件。
Longtan hydropower station is large in big structure size of spiral case, high in installation accuracy and welding requirement, poor in welding environment, and short in construction period.
龙滩水电站机组蜗壳结构尺寸大，安装精度和焊接要求高，焊接环境差，工期要求短。
The invention relates to a front and rear tube welding device for a spiral conveyer, which is characterized by consisting of two parts, namely a clamping part and a transmission part.
本发明涉及一种螺旋输送机前后管体焊接装置，其特征是由装夹和传动两部分组成；
This paper introduces the measure, welding method and inspection result to prevent the welding deformation formation of spiral-seam pipe header after tapping.
介绍了在螺旋焊缝汇管上焊接支管时的防变形措施、焊接方法和检验结果。
Spiral welded pipe is a strip coil as raw material, often warm extrusion molding, to automatically double-wire submerged arc welding process double-sided spiral welded pipe joints.
螺旋焊管是以带钢卷板为原材料，经常温挤压成型，以自动双丝双面埋弧焊工艺焊接而成的螺旋缝钢管。
Inside welding seam cracking of spiral submerged Arc welded pipe is the unsolved problem for many years in the pipe field.
螺旋埋弧焊钢管内焊缝裂纹是本行业多年未解决的问题。
This paper studies the tensile properties of stripe and round bar specimens for high grade(API X65~X70) spiral submerged-arc welding(SSAW) steel pipes.
通过试验研究了X65、X70级螺旋埋弧焊钢管不同拉伸试样——板状试样和圆棒试样的拉伸性能。
A reliable way to improve the quality of spiral pipe was the substitution of high frequency butt welding for HF lap welding.
高频对焊代替高频搭焊是提高中直径螺旋焊管质量的可靠途径。
The problems related to the measurement and control of residual stress in the production of spiral sub-merged arc welding pipe were analyzed based on tests.
在大量试验的基础上，综合论述了螺旋缝埋弧焊管实际生产中有关残余应力的测试与控制问题。
The discussion involves such aspects as the cause of strip folding occurring in butt-welding process of spiral weld pipe, negative influence by such failure on pipe quality and preventive actions.
介绍了螺旋焊管生产中对头焊带钢的硬弯现象发生原因，对钢管质量的危害及防止措施。
The discussion involves such aspects as the cause of strip folding occurring in butt-welding process of spiral weld pipe, negative influence by such failure on pipe quality and preventive actions.
介绍了螺旋焊管生产中对头焊带钢的硬弯现象发生原因，对钢管质量的危害及防止措施。
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