Ultrasonic wave vibration equal channel angular extrusion combined mold

Abstract

The invention discloses an ultrasonic wave vibration equal channel angular extrusion combined mold. An ultrasonic wave vibration system is fixed on a mold base in the vertical direction; an L-shaped concave mold hole is formed in the output end of the ultrasonic wave vibration system; the feeding direction of the concave mold hole is parallel to the ultrasonic wave vibration direction; the discharge direction of the concave mold hole is perpendicular to the ultrasonic wave vibration direction; guide columns are uniformly arranged on the mold base; guide sleeves which relatively move in match with the guide columns are arranged on the guide columns; the guide sleeves are fixed on a top base of the mold; a convex mold is also fixed on the top base of the mold; a plurality of material guide sleeve support rods are uniformly fixed on the mold base; material guide sleeve fixing plates are fixed on the tops of the material guide sleeve support rods; material guide sleeves in match with the convex mold are fixed on the material guide fixing plates; the material guide sleeves are positioned above the convex mold hole; gaps are formed between the material guide sleeves and the concave mold hole. The ultrasonic wave vibration system and an equal channel angular extrusion mold are reasonably combined to form the ultrasonic wave vibration equal channel angular extrusion combined mold, so that both the yield stress and the flowing stress of a material are reduced, and crystal grains of the material are refined, and the comprehensive mechanical property of the material is improved.

Description

technical field [0001] The invention relates to the technical field of material extrusion equipment, in particular to an ultrasonic vibration equal-diameter angular extrusion combined die. Background technique [0002] With the wide application of ultrasonic technology in metal flaw detection, parts cleaning, machining and welding, ultrasonic technology has also made great progress in plastic forming, and has been used in drawing, extrusion, riveting, etc. to varying degrees. Technology, especially ultrasonic wire drawing has been used in industrial production. Experimental studies have shown that when ultrasonic vibration is applied to metal plastic processing, the yield stress and flow stress of the material will be significantly reduced, thereby reducing the deformation force, increasing the filling property of the metal plastic flow, and enabling the plastic deformation of the metal. More fully uniform, can significantly improve the quality of workpiece forming. Equal ...

AI Technical Summary

Problems solved by technology

However, there are still unsatisfactory aspects of improving the structure and mechanical properties of materials by simply using ultrasonic or equal angular extrusion processing methods.

A grain refinement method and device are disclosed in the existing patent application documents. The technical solution of this patent has the following obvious defects: 1. Figure 10 As shown, the vibration direction of the ultrasonic wave output by the ultrasonic system is perpendicular to the feeding direction of the equal diameter angular extrusion die, and parallel to the discharge direction. Cooperate with each other, so the technical solution recorded in this patent document cannot be implemented, and there are obvious mistakes

like Figure 10 As shown, when the distance between the output end of the ultrasonic system and the outlet of the equal-diameter angular extrusion die is 0mm, the equal-diameter angular extrusion die is directly connected to the ultrasonic vibration tool head, and the high-frequency vibration at the connection will cause the mold and tool The strong friction between the heads will cause the burning of the mold and the tool head, which cannot be used for actual production

3. The Equal Angle Extrusion Die vibrates violently under the action of ultrasonic waves, resulting in direct contact between the punch and the Equal Angle Extrusion Die and strong friction, which will cause the die to burn and cannot be used in actual production

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