聚乙烯燃气管材对接焊焊口麻点研究

Polyethylene Gas Pipe Butt Welding Weld Pitting Research

由于聚乙烯燃气管材存放环境因素的影响,在实施对接焊时,在对接焊焊口处可能会出现麻点现象,严重的会影响运行管线的安全。本文简要介绍了对接焊焊口麻点形成的原因,开展了不同材料聚乙烯燃气管材对接焊焊口麻点试验,研究了不同材料管材的吸水性能以及水分含量对不同材料管材对接焊焊口质量的影响程度,并进行了采用热烘法减少聚乙烯对接焊焊口麻点的试验研究,找出了简单有效的减少焊口麻点的方法。

Since polyethylene gas pipe storage environmental factors in the implementation of butt welding, butt welding weld in place pitting phenomenon may occur, seriously affect the operation of pipeline safety. This paper introduces the butt weld pitting reasons for the formation, carried out different materials polyethylene gas pipe butt welding weld pitting test tubes of different materials, water absorption and moisture content of materials of different quality weld pipe butt welding degree of influence, and carried out by thermal drying method to reduce polyethylene butt weld pitting pilot study to find a simple and effective in reducing weld pitting application method.