Explanation of precautions for stainless steel pipe(tube mill) machine and welded pipe equipment
There are two methods for producing oil casings, one is hot-rolled seamless steel pipe, and the other is welding production using welded pipe equipment. However, if welded pipe equipment is used to produce oil casing, there will be one on the oil casing. Welds, so you must pay attention to the use of welded pipe equipment to produce oil casings. Let's take a brief look at the issues that need attention. Stainless steel pipe machine, stainless steel decorative pipe machine
The first problem to be noted is the weld gray spot. The weld gray spot is a flat defect existing at the weld fusion line. The defect of the weld gray spot will affect the mechanical properties of the oil casing, and the weld will be produced. The reason for the gray spot is related to the welding temperature and the welding speed in addition to the base material itself, so the welding quality must be strictly controlled during the welding process. By heat treatment of the weld, the chance of weld ash on the oil casing can be reduced. Stainless steel pipe machine, stainless steel decorative pipe machine
The second problem that needs attention is the toughness of the weld. The weld of the oil casing produced by the welded pipe equipment is affected by the welding process in addition to the toughness of the base metal, so it is well controlled when welding with the welded pipe equipment. The width of the middle bright line and the angle of the streamline can significantly improve the weld toughness of the oil casing. Professional pipe making machine manufacturer, pipe making machine manufacturer.we are tube mill manufacturer and tube mill supplier ,you can know it.
The third weld to be noticed has grooved corrosion. For this case, the thermal tension reduction method can be used to reduce the sensitivity of the groove corrosion, and the alloy element can be added reasonably to improve the weld. Grooved corrosion of the area.
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