Continuously extruding method and extruding device of non-radial feeding

Abstract

The invention discloses a continuously extruding method of non-radial feeding, comprising the steps of a, depressing the blank by a compaction wheel and enabling the blank to enter into an extruding tool due to the friction force generated by rotating the groove of an extruding wheel and the blank; b, enabling the blank to enter into the feed port of an extruding tool after the blank advances to a stop block, wherein the center line of the feed port of the extruding frock is at the chord direction of the extruding wheel; c, extruding the product from the die and fast cooling the product through a jet cooling device by arranging a metal molding cavity at the tail end of the feed port of the extruding tool and arranging a die at the tail end of the metal molding cavity. Different from the continuous channel corner extrusion, in the whole working process of which the geometrical shape of the blank basically remains the same, the continuously extruding method and extruding device of non-radial feeding disclosed by the invention aim at obtaining high-performance materials of fine grain tissue finally by shear deformation.

Description

technical field [0001] The invention relates to a non-radial feeding continuous extrusion method. Background technique [0002] The feed port on the extrusion tooling of traditional continuous extrusion equipment is in the radial direction of the extrusion wheel. Sometimes in order to improve the strength of the block, the direction of the feed port will be offset by a certain angle, and the centerline of the cavity feed port and the extrusion wheel The angle β between the tangent of the pressure roller at this point is 90° or an acute angle less than 90°. This has the advantage that the force of the block is good and can improve the service life of the block. The disadvantage is that the temperature of the block is high. , high extrusion force. [0003] The continuous equal-channel angular extrusion is a combination of continuous extrusion and equal-channel angular extrusion, and a rotating extrusion wheel is used to realize the equal-channel angular extrusion. The charac...

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Problems solved by technology

[0005] At present, due to the limitations of the working temperature and strength of the extrusion wheel, the block, and the cavity material, when extruding non-ferrous metals such as copper and copper alloys, the extrusion tool must be strictly controlled by controlling the rotation speed of the extrusion wheel. Otherwise, it will cause premature failure of the extrusion tool, which limits the production efficiency of continuous extrusion. For extruding soft metals such as pure aluminum, due to the limitation of the recrystallization temperature of the material, in order to ensure that the extruded If the product is not overheated or overheated, it is necessary to properly control the rotation speed of the extrusion wheel, and then control the extrusion temperature to obtain satisfactory product quality

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