Innovation Of Seamless Steel Tube Production
Three-roll rolling tube billet should initially, after the extrusion sizing test, if there is no response after fracture on the surface of pipe have to be cut after reducing equipment, reducing expand about a meter of billet.And then enter the annealing process, annealing with acid pickling fluid, marinading when need to pay attention to whether there is a lot of bubble surface area, if there is a lot of bubbles reveal that the top quality of the steel tube can not satisfy the equivalent standards.Appearance on chilly rolled smooth steel tube is much shorter in warm rolled seamless steel pipeline, chilly rolled smooth steel tube wall surface density generally smaller than hot rolled seamless steel tube, but the surface area looks brighter than the thick ASTM A106 seamless steel pipe, not a lot of harsh surface area, the size is not a great deal of burr.
The shipment problem of hot rolled seamless steel tube is generally made after warm treatment.Hot-rolled smooth steel tube after QC must pass staff strict hands-on pick, after the top quality assessment for surface layer of oil, and after that complied with by chilly illustration experiment often times, perforation of the experiments carried out after hot rolling handling, if the punched hole diameter is also big for straightening out straightening.After straightening, the transmission gadget is sent to the detector to perform the examination, and afterwards the tag as well as the specification are taken into the storehouse.
My Home Page as well as home heating to punch, three-roll alter rolling, rolling, or pressing - pipeline - sizing (or reducing) - cooling - correcting the alignment of to hydrostatic test or evaluation - > tag, warehousing smooth steel tube is made from strong tube ingot or the opening vein, after that with warm rolling and also chilly rolling or chilly dial.The spec of seamless steel tube is shown by the outer size of the wall thickness millimeter.
Normally see here than 32 mm hot rolled smooth steel tube size, wall density 2.5 200 mm, to 6 mm chilly rolled seamless steel tube diameter, wall density to 0.25 mm, to 5 mm slim wall pipe size thickness less than 0.25 mm, chilly than hot rolled high dimensional precision.
It is generally made from the premium quality carbon steel, such as 10, 20, 30, 35, 45, etc., such as low alloy steel, such as 16Mn, 5MnV, and so on, etc., which are constructed from warm rolled or cool rolled steel, such as 40Cr, 30CrMnSi, 45Mn2, 40MnB, etc.The seamless pipeline made by reduced carbon steel, such as 10 and also 20, is primarily used for circulation pipe.The seamless work of medium carbon steel such as 45 and also 40Cr is utilized to make mechanical components, such as cars and truck and also tractor parts.Generally utilize seamless steel tube to ensure strength and flattening test.Hot rolled steel pipe in warm rolled state or warm treatment.Cold rolled with warm therapy.
Warm rolled, as the name implies, the temperature level of the rolling item is high, so the deformation resistance is tiny, can accomplish the big deformation quantity.Take the moving system of steel plate as an instance, the thickness of the continual spreading billet is about 230mm, as well as the density is 1 ~ 20mm after roughing as well as rolling.At the exact same time, because the thickness of steel plate is smaller sized than tiny, the dimension accuracy requirement is reasonably reduced, the plate kind problem is difficult to appear, the control convexity is offered priority.