Two Methods of Welding in High-Frequency Straight Seam Pipe Units There are two primary welding methods used in high-frequency straight seam pipe units: contact welding and induction welding. Each has its own advantages and disadvantages, making them suitable for different applications. Contact welding involves using a pair of copper electrodes that come into direct contact with the edges of the steel pipe. This method allows for good penetration of the induced current, maximizing the effects of the high-frequency current. Due to this direct contact, contact welding is known for its high efficiency and relatively lower power consumption, which makes it ideal for high-speed production of pipes with lower precision requirements. It is commonly used when manufacturing thick-walled steel pipes, where high strength is essential. However, contact welding has some drawbacks. First, the copper electrodes tend to wear out quickly due to constant contact with the steel plate. Second, the stability of the current can be affected by the flatness of the steel plate surface and the straightness of the edge, leading to higher internal and external burrs on the weld. As a result, contact welding is generally not preferred for high-precision or thin-walled pipe production. Induction welding, on the other hand, uses one or more turns of an induction coil wrapped around the outside of the steel pipe. Multi-turn coils offer better performance than single-turn ones, but they are more complex to manufacture and install. The closer the coil is to the surface of the steel pipe, the more efficient the welding process becomes. However, if the distance is too small, it can lead to electrical discharge between the coil and the pipe. Therefore, it is recommended to maintain a gap of 5–8 mm between the induction coil and the steel pipe surface to ensure safe and stable operation. A major advantage of induction welding is that the coil does not come into direct contact with the steel plate, eliminating electrode wear. Additionally, the induced current is more stable, resulting in a consistent and reliable welding process. Because of these benefits, induction welding is typically the preferred method for producing precision pipes. Important Considerations for Debugging and Daily Maintenance of the Pipe Welding Unit When operating a welded pipe unit, it is crucial to follow all safety guidelines and operational procedures. Operators must avoid touching the mold during operation and should always keep their hands away from the pipe area to prevent accidents caused by improper handling. Before starting the unit, operators should check all lubrication points to ensure they are properly greased. If necessary, additional lubricant should be applied to maintain smooth operation. It is also important to use high-temperature resistant synthetic composite aluminum-based grease during operation, as this helps protect the unit from damage and extends its lifespan. Regular maintenance and careful operation are essential to ensure the longevity and efficiency of the welded pipe unit. By following these precautions, operators can minimize downtime and improve overall productivity. Table Tennis Court PVC Sports Flooring Table Tennis Court Pvc Sports Flooring,Floor For Table Tennis Court,Table Tennis Court Pvc Floor,Table Tennis Court Floor Jiangsu Ruidong Sports Technology Co., Ltd , https://www.cnruidongsports.com