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Matters needing attention in the production of oil casing pipe welded pipe unit
Release time:
2018-12-06 11:55
Jiangsu Nanyang Machinery Manufacturing Co., Ltd. is a professional manufacturer of pipe welding machine. It has been committed to the research and development of pipe welding machine and the application of welded pipe unit in daily production for many years. Among them, the use of welded pipe unit to produce oil casing has also become a trend, which is mainly inseparable from the advantages of welded pipe unit.
jiangsu province nan yang machinery manufacturing co., ltd. is a professional manufacturer of production pipe welding machine, over the years committed to the research and development and production of pipe welding machine
The application of welded pipe unit in daily production is very common, and the use of welded pipe unit to produce oil casing has also become a trend, which is mainly inseparable from the advantages of welded pipe unit. Generally speaking, the production of oil casing can be used in the way of hot-rolled seamless steel pipe, but also in the way of welded pipe unit welding, and the phenomenon of using welded pipe unit welding in daily life is more common. Because there will be a weld in the oil casing produced by welding, the problems such as strength-toughness matching between the base metal and the weld, gray spot of the weld and groove corrosion of the weld are the problems to be solved. Attention should be paid to avoid the above problems when welding the oil casing produced. So what should be paid attention to when the welded pipe unit in the production of oil casing? The welded pipe unit should pay attention to the strength and toughness when the oil casing is produced. The welded pipe unit can be cooled by the control of the thermal tension reduction, which can greatly improve the welding of the oil casing. The weld problem can also enhance its strength and toughness. The chemical composition of welding base metal, welding temperature, welding speed and other factors are the main factors affecting the gray spot of the weld. In order to avoid the gray spot of the weld, it is necessary to pay attention to strictly control the quality of the strip steel edge and the welding process. The method of welding heat treatment and heating the whole pipe body before thermal tension reduction can be used to reduce and avoid the appearance of the gray spot of the weld. The control of weld groove corrosion needs to be avoided by thermal tension reduction.
Jiangsu Nanyang Machinery Manufacturing Co., Ltd. produces: ZG series high-frequency welded pipe unit, GW series cold bending forming unit, BG series stainless steel pipe making unit, FG high-precision composite pipe production line, roll mold.
Contact information: 0514-87736108
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