Tuesday, August 12, 2014

What is a steel pipe extrusion

The extrusion process is the heating of the ingot into the extruder barrel, the extrusion cylinder is placed at one end of the extrusion die, a pressure is applied to the other side, forcing the metal flow from the die orifice to produce a cross-section reduction, increasing the length plastic deformation method. Principle of the extrusion process, the first heated to a suitable temperature, to release the billet in the extruder barrel, extruder barrel at the end of the extrusion die is placed at the other end of the extruder barrel into the extruder barrel is slightly less than the pressing pressure washer, and then insert the shaft extrusion, extrusion shaft diameter smaller than the cylinder diameter 3 ~ 10mm. The pressure of the extruder through the extrusion axis, the metal billet is passed to the spacer, forcing the metal flow from the die hole, the hole size with the mold to obtain the shape of the same products. When the article is extruded hollow tube extrusion axis to an inner diameter of the pipe is determined by the punch pin. Wear larvae L needle is passed through the hollow shaft mounted on perforated extrusion systems extruder.

After the extruded steel pipe, first extrusion ingot axis by applying pressure to the pads, so that the metal tube full of extrusion, extrusion axis again after exiting some distance, then piercing needle to move forward through the ingot center and with the diameter of the extrusion die with a predetermined fit, is moved forward again after the extrusion axis, the pressure is transmitted to the billet forcing the annular gap between the metal of the mold formed by the punch pin hole and flows out to obtain the desired pipe. When the perforation, the central part of the metal billet to form a solid rod out from the die orifice to form the perforated first material. The degree of perforated material head size and full Extrusion ingots, diameter die hole piercing needle and relevant. At the end of extrusion, extrusion axis in the extrusion barrel remaining residual material that pressure more than the introduction of squeeze tube, by separating shears or hot saw the article and the pressure of more than cut off, and then by the separation mechanism will be pressed over the pad sheet separation, various tools and moving parts of the extruder to return the original state, the next pressing cycle.

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