High-speed hot extrusion die

A technology of hot extrusion dies and dies, applied in the direction of metal extrusion dies, etc., can solve the problems of low production efficiency in high-speed extrusion, and achieve the effects of uniform and stable metal flow, small resistance, and shortened molding time

Active Publication Date: 2014-12-24
CHANGSHA XINZHENSHENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a high-speed hot extrusion die to solve the technical problem that the traditional hot extrusion die cannot be used for high-speed extrusion, resulting in low production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The structure of the mold A is: the angle of entry of the diversion hole 120 is 36°, the angle of entry of the diversion hole 140 is 40°, the side walls of the diversion hole 120 and the side walls of the diversion hole 140 are flat, the side walls of the diversion hole 120 are in line with the The junction of the front end of the mold body 100 has a smooth transition, the junction of the side wall of the diversion hole 120 and the side wall of the drainage hole 140 has a smooth transition, the junction of the side wall of the drainage hole 140 and the bottom surface has a smooth transition, and the height of the working belt drop is 160 A curved transition is adopted between the top and the bottom, and the working belt drop 160 is set at the inlet end of the type hole 180 .

Embodiment 2

[0053] The difference between the structure of mold B and mold A is that the angle of entry of the diversion hole 120 is 45°, and the angle of entry of the diversion hole 140 is 30°.

Embodiment 3

[0055] The difference between the structure of mold C and mold A is that the side wall of the diversion hole 120 is a smooth curved surface, the side wall of the diversion hole 120 forms a tangent relationship with the mold body 100 and the drainage hole 140, and the side wall of the front end of the drainage hole 140 is in contact with the mold The angle of the axis of the main body 100 is 30°, and the rest of the structures are the same.

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Abstract

The invention discloses a high-speed hot extrusion die. The high-speed hot extrusion die comprises a die body, wherein a diversion hole, a draining hole, a molding hole and a discharging hole are successively formed in the die body and are in a through connection; the diversion hole outwards extends towards the direction of the front end surface of the die body; the front end of the draining hole outwards extends towards the direction of the diversion hole. The depths of the draining hole at each place are different, a high-low fluctuating surface formed at the bottom surface is a falling head of a work zone, and the molding hole is placed at the back end of the draining hole. The side wall of the molding hole is named as the work zone which plays roles of material molding and flow velocity adjustment, and the falling head of the work tape is arranged at the jointed position of the front end of the molding hole and the draining hole. Through the successive guiding of the diversion hole and the draining hole, the high-speed hot extrusion die enables metal to flow more uniformly and stably. The length of the work tape can be correspondingly shortened, and the falling head of the work tape can also be made smaller. When an extruding machine runs at a speed closer to the highest extrusion speed, the quality of products can still be ensured. When the extruding machine runs at a higher extrusion speed, the molding time of sectional materials can be shortened, and the production efficiency can be improved.

Description

technical field [0001] The invention relates to the field of molds, in particular to a high-speed hot extrusion mold. Background technique [0002] Hot extrusion dies are commonly used for forming aluminum and steel. Such as figure 1 , figure 2 , image 3 , Figure 10 and Figure 11 As shown, the hot extrusion die includes a diversion hole 120 , a shape hole 180 and a discharge hole 200 arranged in sequence, and the three are connected. The shape of the hole 180 is the same as that of the extruded profile, and the length of the working belt is different in various places to adjust the flow rate of the metal. Where the metal is easy to flow out, the working belt is longer, such as a place with a large wall thickness and a place close to the extrusion center. Local work belts should be longer. The length of the working belt is different, and it is undulating at the end. The outer contour of the cavity of the guide hole 120 is larger than the outer contour of the type ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C25/02
Inventor 周瑜夏绪勇骆红伟张武
Owner CHANGSHA XINZHENSHENG GRP
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