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Influence of Meeting Angle on Welding of High Frequency Longitudinal Welded Pipe Unit
Release time:
2018-12-06 13:51
Knowing the influence of the meeting angle on welding can better operate and adjust the high-frequency straight seam welded pipe unit to achieve higher efficiency. Today, let's take a look at the influence of the meeting angle on the high frequency straight seam welded pipe machine.
Knowing the influence of the meeting angle on welding can better operate and adjust the high-frequency straight seam welded pipe unit to achieve higher efficiency. Today, let's take a look at the influence of the meeting angle on the high frequency straight seam welded pipe machine.
The meeting angle is the angle between the two sides of the steel pipe when entering the extrusion point. Due to the proximity effect, when high-frequency current passes through the edge of the steel plate, the edge of the steel plate will form a preheating section and a melting section (also known as a lintel). When the lintel section is violently heated, the molten steel inside it is rapidly vaporized and burst and splashed to form a flash. The size of the meeting angle has a direct impact on the melting section. When the convergence angle is small, the proximity effect is significant, which is beneficial to increase the welding speed, but when the convergence angle is too small, the preheating section and the melting section become longer, and the result of the melting section becomes longer, making the flash process unstable, and the lintel is easy to form deep pits and pinholes after the explosion slope, which is difficult to press together. When the convergence angle is too large, the melting section becomes shorter and the flash is stable, but the proximity effect weakens, the welding efficiency decreases significantly, and the power consumption increases. At the same time, when forming thin-walled steel pipes, the convergence angle is too large to elongate the edges of the pipes and produce wavy wrinkles. At present, in production, we generally adjust the convergence angle within 2 ° -6 °. When producing thin plates, the speed is faster, and when extruding, the convergence angle is smaller. When producing thick plates, the speed is slower, and when extruding, the convergence angle is larger. Some manufacturers have put forward an empirical formula: convergence angle × unit speed ≮ 100, which can be used for reference.
Jiangsu Nanyang Machinery Manufacturing Co., Ltd. specializes in the design and manufacture of various types of high-frequency welded pipe units, stainless steel precision welded pipe units, high-precision steel-plastic, stainless steel composite welded pipe units; design and manufacture of various specifications and models of welded pipe molds-rollers, special-shaped rollers, So that the products formed a series, in the majority of domestic and foreign merchants enjoy a high reputation. Nanyang machinery, ZG series high frequency welded pipe unit, GW series cold bending forming machine unit, BG series stainless steel pipe making machine unit, FG high precision composite pipe production line, roll mold. Welcome to inquire: 0514-87736048
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