Bidirectional extrusion mould and extrusion moulding method for double-layer metal plate and strip or sectional material

A metal strip, bidirectional extrusion technology, applied to metal extrusion dies and other directions, can solve the problems of increasing the machining and assembly of metal blanks, cracking of double-layer metal clad plates, and poor control of heating temperature, and achieves easy large-scale production. The effect of large-scale industrial production, reduction of machining and assembly links, and simple structure

Active Publication Date: 2015-05-20
重庆昱华新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the traditional extrusion molding method are: (1) the machining and assembly of metal blanks are added, and the process flow is increased; (2) the two metals are combined and heated together, the heating temperature is not easy to control, and it is prone to temperature fluctuations. In the case of uniformity, uneven temperature will make the metal flow uneven during the extrusion process, resulting in poor plate shape or even partial tearing; (3) Unidirectional extrusion requires a high-power extruder, which increases the cost of purchasing an extruder (4) During the extrusion process, the friction between the two layers of metal is small and the welding is poor. As a result, on the one hand, the materials for extrusion compounding are limited and difficult to apply For metal materials with poor welding properties, on the other hand, due to the poor welding of the two metals, the quality of the product cannot be guaranteed, and double-layer metal composite plates are prone to cracking; (5) Only strips with simple cross-sections can be formed or profiles

Method used

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  • Bidirectional extrusion mould and extrusion moulding method for double-layer metal plate and strip or sectional material
  • Bidirectional extrusion mould and extrusion moulding method for double-layer metal plate and strip or sectional material
  • Bidirectional extrusion mould and extrusion moulding method for double-layer metal plate and strip or sectional material

Examples

Experimental program
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Effect test

Embodiment 1

[0025] see figure 1 , a two-way extrusion die for double-layer metal strips or profiles, including a die body 3, the shape of the die body 3 can be a round shaft, a square shaft, a stepped shaft, etc., and the die body 3 of this embodiment is a stepped round shaft , the diameter of the cylinders at both ends is smaller than the diameter of the middle, and the cylinders at both ends and the middle are connected and transitioned by a circular platform; the cylinder at the left end of the mold body 3 has a first blank cavity 2, and the cylinder at the right end of the mold body 3 has a second blank cavity. The shape of the blank cavity 5, the first blank cavity 2 and the second blank cavity 5 can be a circular shaft shape, a square shaft shape, a stepped shaft shape, etc. The first blank cavity 2 and the second blank cavity 5 of this embodiment are both circular Axial shape; the middle part of the mold body 3 has a composite cavity 4, and the left and right ends of the composite ...

Embodiment 2

[0029] see figure 2 , a double-layer metal strip or profile bidirectional extrusion die, comprising a die body 3, the shape of the die body 3 is cylindrical, the left end of the die body 3 has a first blank cavity 2, and the right end of the die body 3 has a second The blank cavity 5, the first blank cavity 2 and the second blank cavity 5 are cylindrical; the middle part of the mold body 3 has a composite cavity 4 extending along the axial direction of the mold body 3, and the left and right sides of the composite cavity 4 The ends communicate with the first blank cavity 2 and the second blank cavity 5 respectively; the middle part of the mold body 3 has a molding cavity 8 extending along the diameter direction of the mold body 3, and one end of the molding cavity 8 communicates with the composite cavity 4, forming a T-shaped Cavity, the other end of the molding cavity 8 extends to the outer wall of the mold body 3 and forms a discharge port, and the cross-sectional shape and...

Embodiment 3

[0033] A method for forming a double-layer metal strip or profile, comprising the steps of:

[0034] 1) Clean the surface of two different metal blanks. The surface cleaning is mainly to remove the grease and scale on the metal surface, and then put the two metal blanks into the heating furnace for heating. After heating to a suitable temperature, the two The metal blanks are put into the first blank cavity 2 and the second blank cavity 5 respectively; the two different metals in this embodiment are magnesium alloy and aluminum alloy respectively, wherein the magnesium alloy is heated to 300°C, and the aluminum alloy is heated to 350°C;

[0035] 2) Control the movement of the first extruding rod 1 and the second extruding rod 7 through the telescopic device, the first extruding rod 1 and the second extruding rod 7 push two different metal blanks into the compound cavity 4, and the Under the action, the two metal blanks are composited, and the composite double-layer metal blank...

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Abstract

The invention discloses a bidirectional extrusion mould and an extrusion moulding method for a double-layer metal plate and strip or sectional material. The bidirectional extrusion mould comprises a mould body, wherein one blank cavity is formed in each of the left end and the right end of the mould body, a composite cavity is formed in the middle of the mould body, the two ends of the composite cavity are respectively communicated with the left blank cavity and the right blank cavity; one moulding cavity is also formed in the mould body, one end of the moulding cavity is communicated with the composite cavity, the other end of the moulding cavity extends to the outer wall of the mould body and forms a discharging hole, and the shape and the dimension of the cross section of the moulding cavity are consistent with the shape and the dimension of the cross section of the to-be-processed plate and strip or sectional material. The bidirectional extrusion mould and the extrusion moulding method for the double-layer metal plate and strip or sectional material have the advantages that a metal blank assembling link is eliminated, so that a technological process is shortened; meanwhile, grains can be refined, and mechanical properties of metals can be improved, so that two metals are interpenetrated, and the binding force of a contact surface is improved; besides, continuous production can be carried out, the bidirectional extrusion mould is mainly applicable to bidirectional extrusion of composite metal, and production cost is low and efficiency is high, so that large-scale industrial production can be easily realized.

Description

technical field [0001] The invention relates to an extrusion die and an extrusion molding method for a layered metal composite material, in particular to a bidirectional extrusion die and an extrusion molding method for double-layer metal strips or profiles. Background technique [0002] Layered metal composite material is a new type of composite material prepared by using composite technology to make two or more metals with different physical, chemical and mechanical properties realize firm metallurgical bonding at the interface. The double-layer metal composite material is composed of two metals. It has the excellent properties of the two metals and can play a role that is difficult for a single metal. [0003] There are two main conventional composite processes for double-layer metal composite materials: one is casting, that is, another metal liquid is poured on the existing metal strip or profile, and the other metal liquid adheres to the existing metal strip or profile ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C25/02B21C23/03
CPCB21C23/22B21C25/02
Inventor 胡红军代俊林杨明波张丁非欧忠文黄伟九刘成龙周志明
Owner 重庆昱华新材料科技有限公司
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