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Influence of Pipe Blank Groove on Welding of High Frequency Straight Seam Welded Pipe Unit
Release time:
2018-12-06 13:50
Knowing the influence of tube billet groove 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 tube billet groove on high frequency straight seam welded pipe machine.
Knowing the influence of tube billet groove 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 tube billet groove on high frequency straight seam welded pipe machine.
The groove of the tube blank is the cross-sectional shape. The general manufacturers directly enter the high-frequency welding after longitudinal shearing, and the groove is "I" shaped. When the welding material thickness is greater than 8~10mm above the pipe, if the use of this "I"-shaped groove, because of the relationship between the curved arc, it is necessary to melt off the inner layer of the tube blank first contact, the formation of a very high internal burr, and easy to cause the plate center layer and the outer layer of insufficient heating, affecting the welding strength of high-frequency weld. Therefore, in the production of thick-walled pipes, it is best to planed or milled to make the groove "X" shape. Practice has proved that this groove has a great relationship with uniform heating to ensure the quality of the weld.
The selection of the groove shape also affects the size of the adjustment meeting angle. The design of welded joints is a weak link in the design of welding engineering. The main reason is that the groove design of many steel structures is not made by welding engineering technicians. Grooving with poor hard sleeve standards and process performance is common. The groove form plays an important role in controlling the internal quality of the weld and the manufacturing quality of the welded structure. The groove design must consider the fusion ratio of the base metal, welding space, welding position and comprehensive economic benefits. The lateral contraction value ΔB shall be calculated according to the following formula.
DB=5.1Ao/t 1.27d
Where, Aω-weld cross-sectional area, mm, t-plate thickness, mm,d-weld root clearance, mm. After finding out the relationship between ΔB and A ω, we can analyze the relationship list, process the data, optimize the design, and finally determine the break form of the rectangular tube butt weld.
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 and 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 have formed a series, and enjoy a high reputation among the majority of customers at home and abroad. 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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