ERW Steel Pipe Production: The Role of The Resistor
Date:2017-06-19 View(s):620 Tag:erw steel pipe, erw steel pipe production, resistor
The role of the resistor in the production of ERW steel pipe is to strengthen the high-frequency current skin effect and adjacent effects, the resistance is generally used M-XO / N-XO-type iron oxide manufacturing, usually made Φ10mm × (120-160) mm specifications of the magnetic Stick, packed in heat-resistant, insulated shell, the internal pass through the water to cool. The resistor is set to match the diameter to ensure the corresponding flux. To ensure the permeability of the resistor, in addition to the material requirements of the resistor, while ensuring that the cross-sectional area of the resistor and the diameter of the cross-sectional area ratio should be large enough. In the production of API pipes and other high-grade pipe, are required to remove the burr, the resistance can only be placed in the inner burr, the cross-sectional area of the corresponding fist will be much smaller, then take the magnet's focus on the layout of the fan is better than Ring arrangement. The distance between the resistance and the welding point also affects the welding efficiency. The gap between the resistor and the inner wall of the pipe is generally 6 to 15 mm, and the upper limit of the pipe diameter is large. The resistor should be placed concentrically with the pipe, and the head and the welding point Of the distance to take 10 ~ 20 mm, the same token, take a large diameter when the larger value.