Continuous extrusion method of stacked assembling die with reversed cone angle and equipment

An extrusion method and combined mold technology, applied in the direction of metal extrusion molds, etc., can solve the problems of reducing the service life of the cavity, damaging the cavity, and increasing production costs.

Inactive Publication Date: 2009-12-23
大连康丰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are: (1) different cavities are required to extrude products with large differences in size and specifications; (2) when extruding different products with the same cavity, some products with smaller sizes , it will bring a large extrusion load and a high temperature of the blocking block, which will cause premature damage to the cavity, reduce the service life of the cavity, and increase the production cost; for some other products with large sizes, it will cause the extruded product to fail. Product defects that are completely filled and cannot be produced

Method used

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  • Continuous extrusion method of stacked assembling die with reversed cone angle and equipment
  • Continuous extrusion method of stacked assembling die with reversed cone angle and equipment

Examples

Experimental program
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Embodiment 1

[0023] Such as figure 1 As shown in the continuous extrusion equipment with superimposed combined molds with inverted cone angles, an extrusion wheel 10 with a circumferential groove 11 is installed on the rotating shaft 9, and a mold assembly is installed in the cavity 1, and the mold assembly The total height remains unchanged. The mold assembly includes an inverted cone angle mold 3. On the blank inlet side of the inverted cone angle mold 3, there is a cone angle 13, and the angle is 1 to 10°. The height H of the inverted cone angle mold is the mold The total height H1 of the assembly, the cavity feed port 6 and the discharge port 8 are connected with the mold assembly, and the other end surface 7 of the feed port is connected with the groove 11 of the extrusion wheel.

Embodiment 2

[0025] The continuous extrusion equipment with stacked combined dies with inverted cone angles, the basic structure is the same as that of embodiment 1, the difference is that the die pad 2 is superimposed and installed in front of the inverted cone angle mold 3, and stacked behind the outlet 12 of the inverted cone angle mold 3 The mold pad 4 is installed, the mold pad 2, the inverted cone mold 3 and the mold pad 4 constitute the mold assembly, the total height H1 of the mold assembly is constant, and the height H of the inverted cone mold 3 varies with the product size, so The mold height H is different for products of different sizes, that is, non-equal height molds; the peripheral dimension of the mold pad 2 hole is 2 to 20 mm larger than the peripheral dimension of the reverse taper mold 3 inlet 5, and the peripheral dimension of the mold pad 4 hole is larger than The peripheral dimension of the outlet of the inverted taper mold 3 is 2 to 20 mm larger.

[0026] The height...

Embodiment 3

[0028] Adopt embodiment 1 ( figure 2 The shown cavity and mold) equipment carry out continuous extrusion of copper material, that is, the continuous extrusion method of superimposed combined mold with inverted cone angle: the height of the mold assembly of the inverted cone angle mold remains unchanged, and after the billet enters the mold assembly, The maximum sectional area of ​​the extruded product can be 9 times larger than the sectional area of ​​the billet, and at the same time, the height of the inverted cone die should be shortened as much as possible.

[0029] The 20mm copper rod is used as the blank on the 400 continuous extrusion machine to produce copper bars of various specifications from 25mm to 130mm in width, all using one cavity. During the production process, the inverted cone angle of the mold is 3°, and the inverted cone The height dimension H of the corner mold varies from 10mm to 47mm, keeping H1 unchanged at 47mm, and according to the size of the produc...

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Abstract

The invention relates to a metal continuous extrusion method, in particular to a continuous extrusion method of a stacked assembling die with a reversed cone angle. The height of the die assembly of the related die with a reversed cone angel is not changed, after blank material enters the die assembly, the sectional area of an extrusion product is maximally nine times larger than that of the blank material, and the height of the die with a reversed cone angle is shortened as much as possible. In the invention, the extrusion force and energy consumption in extrusion are reduced to the greatest extent in the condition of guaranteeing a required size of expanding extrusion, product quality and product forming. The die has a reversed cone angle, and the reversed cone angle can increase the lateral spreading flowing capacity of the blank material in the die. The range of the size of a product produced in a cavity with the same specification is enlarged greatly, and a product with a larger size can be produced by a small machine, so that the service life and the production efficiency of the cavity are improved greatly, and the product with the same size produced by the method consumes less electric energy.

Description

Technical field: [0001] The invention relates to a method for manufacturing copper products such as copper bus bars, copper bars, ladder bars, and copper flat wires, and also relates to equipment used for production. Background technique: [0002] The traditional method for continuous extrusion of copper is to install an overall mold in a given cavity, and the overall dimensions of the overall mold are fixed. Regardless of the product of any specification, the mold with the same thickness and size is used. At the same time, The design and manufacture of the mold adopts a whole or a mold with an alloy embedded in the core of the mold. The entrance of the mold is at right angles or has a small chamfer, and the exit of the mold has a cone angle. Its disadvantages are: (1) different cavities are required to extrude products with large differences in size and specifications; (2) when extruding different products with the same cavity, some products with smaller sizes , it will br...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/00B21C25/02
Inventor 刘元文宋宝韫
Owner 大连康丰科技有限公司
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