Technology Of Seamless Steel Tube Manufacturing

Three-roll rolling tube billet must initially, after the extrusion sizing test, if there is no reaction after crack externally of pipeline have to be reduced after cutting machine, cutting grow concerning a meter of billet.And then go into the annealing procedure, annealing with acid pickling liquid, marinading when ought to take note of whether there is a lot of bubble surface, if there is a lot of bubbles reveal that the high quality of the steel tube can not fulfill the matching standards.Appearance on cold rolled seamless steel tube is shorter in warm rolled seamless steel pipeline, cold rolled seamless steel tube wall thickness normally smaller sized than hot rolled seamless steel tube, but the surface looks brighter than the thick ASTM A106 smooth steel pipe, not a lot of rough surface, the size is not a lot of burr.

check out this site of hot rolled seamless steel tube is typically made after warm treatment.Hot-rolled seamless steel tube after QC ought to pass team strict manual pick, after the high quality inspection for surface area finish of oil, and then followed by cool illustration experiment many times, perforation of the experiments conducted after hot rolling processing, if the punched opening size is too large for correcting straightening.After straightening, the transmission gadget is sent to the detector to carry out the test, and then the tag as well as the requirements are put into the stockroom.

Circular tube billet and also heating to punch, three-roll alter rolling, rolling, or pushing - pipeline - sizing (or minimizing) - cooling - straightening to hydrostatic examination or examination - > tag, warehousing seamless steel tube is made from solid tube ingot or the opening vein, then through hot rolling and chilly rolling or cool dial.The spec of smooth steel tube is suggested by the outer size of the wall thickness millimeter.

Typically than 32 mm warm rolled seamless steel tube size, wall surface thickness 2.5 200 mm, to 6 mm chilly rolled smooth steel tube diameter, wall thickness to 0.25 mm, to 5 mm thin wall surface pipeline diameter thickness much less than 0.25 mm, cool than warm rolled high dimensional accuracy.

It is generally made from the high quality carbon steel, such as 10, 20, 30, 35, 45, etc., such as low alloy steel, such as 16Mn, 5MnV, etc., and so on, which are made of hot rolled or cold rolled steel, such as 40Cr, 30CrMnSi, 45Mn2, 40MnB, etc.The seamless pipeline made by reduced carbon steel, such as 10 and also 20, is mostly utilized for circulation pipe.The seamless work of medium carbon steel such as 45 and also 40Cr is utilized to make mechanical components, such as vehicle and tractor parts.Generally make use of seamless steel tube to make sure toughness as well as flattening test.Hot rolled steel pipe in warm rolled state or warmth treatment.Cold rolled with heat therapy.

webpage rolled, as the name indicates, the temperature level of the rolling piece is high, so the deformation resistance is tiny, can accomplish the big deformation quantity.Take the rolling system of steel plate as an instance, the thickness of the continuous spreading billet has to do with 230mm, as well as the thickness is 1 ~ 20mm after roughing as well as rolling.At the exact same time, since the density of steel plate is smaller sized than tiny, the measurement precision need is relatively low, the plate type trouble is difficult to appear, the control convexity is given priority.
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