1) The process of welded pipe equipment is an important part of the high-frequency welded pipe production line, which can directly affect the quality of the products produced.
2) Raw materials are the main factors affecting the welding quality of steel pipes in the production line of high-frequency welded pipe equipment. There are mainly three aspects: unstable mechanical properties of steel strips, surface defects of steel strips and large deviations in geometric dimensions.
3) The steel strip of high-frequency welded pipe production line equipment. The effect of the mechanical properties of the steel strip on the quality of steel pipes. The commonly used steel for welded steel pipes is carbon structural steel; the effect of surface defects of steel strips on the quality of steel pipes The common surface defects of steel strips are sickle There are several types of bends, waves, slitting edges, etc., sickle bends and waves generally appear in the rolling process of cold-rolled steel strips, which are caused by improper control of the reduction; the influence of the geometrical dimensions of the steel strip on the quality of the steel pipe
4) High-frequency welding also has an impact on the quality of steel pipes. In the high-frequency welding process of the high-frequency welded pipe production line, the control of the welding process and process parameters, the placement of the induction coil and the impedance device, etc., have a great influence on the welding quality of the welded seam of the steel pipe.
5) The influence of roll adjustment on the quality of steel pipes in the high-frequency welded pipe production line cannot be ignored. Roll adjustment is a steel pipe operation process. In the production process, when the rolls are damaged or worn severely, some rolls need to be replaced on the unit, or a certain variety has been continuously produced in sufficient quantities, and the entire set of rolls needs to be replaced. At this time, the rolls should be adjusted to obtain good steel pipes. quality. If the roll is not adjusted properly, it is easy to cause the torsion, lap welding, edge waves, bulging and indentation or scratches on the surface of the pipe body, and large ellipticity of the steel pipe. Therefore, the roll adjustment should be mastered when changing the roll. skill.
It can be seen that in the high-frequency welded pipe production line, there are many aspects that affect the quality of the product, and attention should be paid to the work of each link of the high-frequency welded pipe production line.
Post time: Jul-05-2021