Modern Technology Of Seamless Steel Tube Production

Three-roll rolling tube billet need to initially, after the extrusion sizing examination, if there is no feedback after split externally of pipe have to be reduced after reducing machine, cutting grow about a meter of billet.And then go into the annealing procedure, annealing with acid pickling fluid, marinading when must focus on whether there is a great deal of bubble surface, if there is a lot of bubbles reveal that the quality of the steel tube can not meet the equivalent standards.Appearance on cool rolled seamless steel tube is much shorter in hot rolled smooth steel pipe, chilly rolled seamless steel tube wall thickness usually smaller than warm rolled smooth steel tube, yet the surface area looks brighter than the thick ASTM A106 smooth steel pipe, not a great deal of rough surface, the diameter is not a great deal of burr.

The delivery condition of warm rolled seamless steel tube is typically made after warm treatment.Hot-rolled seamless steel tube after QC must pass staff strict hands-on pick, after the top quality assessment for surface area layer of oil, and then complied with by chilly illustration experiment sometimes, perforation of the experiments carried out after hot rolling processing, if the punched opening diameter is as well big for correcting the alignment of straightening.After straightening, the transmission tool is transferred to the detector to accomplish the examination, and afterwards the tag and also the spec are put into the storage facility.

Circular tube billet as well as home heating to punch, three-roll alter rolling, rolling, or pushing - pipeline - sizing (or minimizing) - cooling down - straightening to hydrostatic test or assessment - > tag, warehousing seamless steel tube is made from solid tube ingot or the perforation vein, after that through hot rolling and cold rolling or cool dial.The spec of smooth steel tube is shown by the external size of the wall surface density millimeter.

Normally more than 32 mm hot rolled smooth steel tube diameter, wall surface thickness 2.5 200 mm, to 6 mm chilly rolled seamless steel tube size, wall density to 0.25 mm, to 5 mm slim wall surface pipeline size thickness less than 0.25 mm, chilly than warm rolled high dimensional accuracy.

It is typically made from the premium quality carbon steel, such as 10, 20, 30, 35, 45, and so on, such as low alloy steel, such as 16Mn, 5MnV, etc., and so on, which are made from hot rolled or chilly rolled steel, such as 40Cr, 30CrMnSi, 45Mn2, 40MnB, etc.The seamless pipe made by low carbon steel, such as 10 and also 20, is generally used for flow pipe.The smooth work of tool carbon steel such as 45 and 40Cr is made use of to make mechanical parts, such as cars and truck and tractor parts.Generally utilize smooth steel tube to make certain strength as well as flattening test.Hot rolled steel pipeline in hot rolled state or warmth treatment.Cold rolled with warm therapy.

webpage rolled, as the name implies, the temperature level of the rolling item is high, so the contortion resistance is little, can achieve the huge deformation quantity.Take the rolling system of steel plate as an example, the thickness of the constant spreading billet has to do with 230mm, and the density is 1 ~ 20mm after roughing and rolling.At the exact same time, due to the fact that the thickness of steel plate is smaller than small, the measurement precision requirement is fairly reduced, home plate type problem is challenging to show up, the control convexity is given top priority.

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