Скачать или смотреть Solid state high frequency welded pipe installation/HF induction heating welded pipe equipment

What are the factors that affect the effective power output of solid state high frequency welding machine?
The effective output power of solid-state HF welder is mainly affected by the following aspects:
1. Welding V angle, economical and efficient angle between 2-3 ° . In addition to electromagnetic induction heating, the main principle of high frequency welding has two important effects, namely skin effect and proximity effect. The smaller the welding V angle, the better the proximity effect, thus, the effective output power of the welding machine can be utilized more effectively.
2. The shape of the two welded surfaces of a welded pipe and the parallelism of the two surfaces make the welding more efficient and the diffusion of molecules between the two surfaces more uniform.
3. The distance between the solder joint and the center of the extrusion roller. The distance is the distance LV = LC indicated in the figure below, and the length of LC is close to the diameter of the steel pipe, which effectively reduces the return of the welding current and thus improves the efficiency.
4. Welding temperature. The welding temperature plays a decisive role in the welding process. If the temperature is too high, the weld surface will be melted, and if the temperature is too low, the weld will be weak. This requires an experienced “Tuner”on the production site to judge according to experience, or a temperature sensor can be installed at the top of the weld, the measured temperature is fed directly into the main operating system of the high frequency welding machine, and the program is analyzed to automatically adjust the output power and the temperature of the welding seam. This function is generally widely used in large diameter tubes.
5. Size, size, position and cooling mode of the impedance (magnetic rod array). The main function of the impedance is to collect the current and distribute it evenly on the inner and outer wall of the tube. The position of the impedance is 200-300mm from the welding joint. In general, a good impedance has a high magnetic saturation function and a high ferrite content.
6. The physical characteristics of steel pipe itself, such as diameter, wall thickness, material and so on. Generally large wall thickness, large diameter of steel pipe welding frequency is relatively low, on the contrary, it is relatively high. This is because of a high-frequency current permeability, the higher the frequency of the current, the more concentrated in the surface of the pipe, the lower the frequency of the current permeability is high.
Kill. The design of inductor is very important to the output of effective power of high frequency power supply.