TUBE, PIPE

  [Tube Drawing Process]Tube drawing process can be divided into sinking, plug drawing and mandrel drawing. Since the inner wall of a tube isn’t supported in sinking process, the wall’s thickness is not reduced a lot but the inside isn’t uniform. Also, since shear deformation is huge in the front and exit of a die, the deformation limit would be lower than other processes. If drawing it by using plug, inner/outer diameter of a tube is well-controlled. Plug determines the shape of internal part. If a long mandrel is used in drawing, friction can be significantly reduced. It inserts a strong and long rod or mandrel in a tube and draws with a tube. If such a moving mandrel is used, drawing force is reduced due to pulling on the front and the reduced friction on tube-mandrel interface. [Applications]   • Fine Cylinder: gas, air, oil, drinking water system, cooling screw, tubes for bending machines, compressor, highly fine processing(honing process) and etc • Precise machine/instrument: semiconductor industry(high purity gas line/instruments), precise electronic/electric/automobile parts, parts for measuring instruments, precise shaft, roller, medical parts for orthodontics and etc • Tubes for food/hygiene: dairy product, beverage, alcoholic liquors, alcohol, food, manufacturing line, water purifier parts, correctional tube line, luxurious decorations, kitchenware and etc. • Heat exchanger: boiler, nuclear generator, chemical manufacturing line, special plants• Parts: sleeve, cap, wrap, hose compression, bush and etc