Tuesday, July 23, 2013

Hot extrusion production process of steel pipe

Hot extrusion process meets stringent product standards, widely used in military, nuclear power, petrochemical, and other cutting-edge areas of aviation and a variety of stainless steel tubes, high-quality high-temperature corrosion steel pipe, steel pipe and other steel titanium and titanium alloy products. These high-quality, high-precision, difficult deformation of specialty steel products, its production processes often require special smelting, casting, rolling, forging production and R & D capabilities, and includes cold rolling, heat treatment process including a series of tube processing capacity. Core areas of hot piercing and hot extrusion production process need to build a complete production line, a broad product line includes: pretreatment tube offline, online pre-heating and heating tube, inner tube, the outer surface of the glass powder lubrication after heat perforation / reaming, after reheating and the inner and outer surfaces of the glass powder lubricant into the hot extrusion process and thermal pressure I saw after cutting, hot extruded steel tube (long tube by heat sawing online after) by a roller transported to the background, and then heat quenched or cooled in the cooling bed. Depending on technical requirements for products, hot extruded pipe after production using continuous production process, but also through rolling, straightening, shot blasting, degreasing, pickling processes to deal with.

With the worldwide high-end seamless piping market recovery and the country's economic strength gradually increased, steel hot extrusion production process ushered in a new round of development opportunities. Hot extruded pipe production process using hot extrusion method with three-stress deformation in the metal density is good, homogeneous, suitable for almost all varieties of steel production, particularly in the high-alloy steels difficult to deformation and various special-shaped production of the tube section has a special processing advantages.

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