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High-quality high-frequency welded pipe machine production process of high-frequency welded pipe and related introduction
Release time:
2018-12-06 11:24
High frequency welding is a kind of welding method that uses the resistance heat generated by the high frequency current flowing through the continuous contact surface of the workpiece to heat and apply the upsetting force to make the workpiece metal to be connected to each other. This welding method is similar to ordinary resistance welding, but there are many important differences.
High frequency welding is a kind of welding method that uses the resistance heat generated by the high frequency current flowing through the continuous contact surface of the workpiece to heat and apply the upsetting force to make the workpiece metal to be connected to each other. This welding method is similar to ordinary resistance welding, but there are many important differences.
The high-quality high-frequency welded pipe machine has a large power supply, and can achieve a higher welding speed for steel pipes of different materials, diameters and wall thicknesses (more than 10 times higher than the highest welding speed of argon arc welding). Therefore, high-frequency welding production of general-purpose steel pipe has high productivity because of the high speed of high-frequency welding, which is difficult to remove the burr in the welded pipe, which is also one of the reasons why the high-frequency welded steel pipe can not be accepted by the chemical and nuclear industries. From the welding material, high frequency welding can weld various types of steel pipes.
high frequency welded pipe production process:
1. The influence of raw materials on the welding quality of steel pipes. The factors affecting the quality of raw materials are mainly three aspects: unstable mechanical properties of steel strip, surface defects of steel strip and large deviation of geometric dimensions.
2. In the process of high-frequency welded pipe production, how to ensure that product quality meets the requirements of technical standards and customer needs, it is necessary to analyze the factors that affect product quality in the steel pipe production process. Therefore, in the process of steel pipe production, the three links of raw materials, welding process and roll adjustment should be controlled.
3. The influence of high frequency welding on the quality of steel pipe. In the process of high-frequency welding of steel pipes, the control of welding process and process parameters, the placement of induction coils and impeder positions have a great influence on the welding quality of steel pipe welds.
4. The effect of roll adjustment on the quality of steel pipe. It can be seen from the steel pipe waste analysis diagram that the roll adjustment is the operation process of the steel pipe. In the production process, when the rolls are damaged or worn seriously, some rolls need to be replaced on the unit, or a certain variety has been continuously produced in sufficient quantities, and a complete set of rolls need to be replaced. At this time, the roll should be adjusted to obtain good steel pipe quality. If the roll adjustment is not good, it is easy to cause defects such as torsion, lap welding, edge wave, bulge, indentation or scratch on the surface of the pipe body, and large ovality of the steel pipe. Therefore, the roll adjustment skills should be mastered when changing rolls.
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