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CN-121988707-A - Device and method for producing copper-aluminum composite board strip by inclined continuous casting and rolling

CN121988707ACN 121988707 ACN121988707 ACN 121988707ACN-121988707-A

Abstract

The invention discloses a device and a method for producing a copper-aluminum composite plate strip by inclined continuous casting and rolling, wherein the device comprises a copper strip supply assembly, an aluminum melt supply and purification assembly, a casting roller and a finished product rolling assembly which are sequentially arranged, wherein the aluminum melt supply and purification assembly is arranged obliquely relative to a horizontal plane, so that a liquid region, a semi-solid transition region and a solidification region are formed in the production direction of the aluminum melt before the aluminum melt enters the casting roller. The copper strip can only contact with the aluminum melt for the first time in the semi-solid transition area in the continuous casting and rolling process through the structure and the running path constraint, and the metallurgical bonding of the copper layer and the aluminum layer is realized under the action of the rolling roller. The method improves the stability and consistency of the composite interface in the continuous production process of the copper-aluminum composite plate strip, and is suitable for continuous preparation of the copper-aluminum composite plate strip.

Inventors

  • RUI JIANFANG
  • RUI TAO

Assignees

  • 常州金方圆新材料有限公司

Dates

Publication Date
20260508
Application Date
20251226

Claims (8)

  1. 1. The device for producing the copper-aluminum composite plate strip by inclined continuous casting and rolling is characterized by comprising a copper strip supply assembly (1), an aluminum melt supply and purification assembly (2), a casting roller (3) and a finished product rolling assembly (4) which are sequentially arranged along the production direction, The aluminum melt supplying and purifying assembly (2) is obliquely arranged relative to the horizontal plane, so that a liquid state area, a semi-solid state transition area and a solidification area are formed in sequence along the production direction before the aluminum melt enters the casting roller (3); The spatial position relation between the copper strip supply assembly (1) and the aluminum melt supply and purification assembly (2) is set to ensure that the copper strip cannot directly enter a complete liquid region of the aluminum melt when entering a casting and rolling region, but can only contact the aluminum melt for the first time in the semi-solid transition region; The casting roller (3) is used for enabling the copper strip and the aluminum melt to finish composite forming under the action of pressing, and the finished product rolling component (4) is used for continuously rolling the composite copper-aluminum composite board strip.
  2. 2. An apparatus for producing copper aluminum composite strip by inclined continuous casting according to claim 1 wherein the copper strip supply assembly (1) is configured to introduce copper strip into the casting area along an incident path forming an angle with the aluminum melt flow and solidification direction.
  3. 3. An apparatus for producing copper aluminum composite strip by inclined continuous casting according to claim 1 wherein the aluminum melt supply and purification assembly (2) is adapted to purify the aluminum melt during the supply of the aluminum melt to the casting zone to reduce the gas and inclusion content in the aluminum melt.
  4. 4. The device for producing the copper-aluminum composite plate strip by inclined continuous casting and rolling according to claim 1, wherein the casting roller (3) is arranged at the downstream position of the semi-solid transition zone, so that the copper strip enters the biting zone of the casting roller (3) along with the aluminum melt for pressing and compositing after the copper strip is contacted for the first time.
  5. 5. A method for producing a copper-aluminum composite plate strip by inclined continuous casting and rolling is characterized by comprising the following steps: continuously conveying copper strips through a copper strip supply assembly (1); continuously introducing the purified aluminum melt into a casting and rolling area through an aluminum melt supply and purification assembly (2), and forming a liquid area, a semi-solid transition area and a solidification area of the aluminum melt before the aluminum melt enters a casting roller (3) under an inclined process condition; Under the common constraint of the device structure and the running path, the copper strip can only be contacted with the aluminum melt for the first time in the semi-solid transition zone; Then enabling the copper strip and the aluminum melt to enter a casting roller (3) together for pressing and compositing to form a copper-aluminum composite board strip; and finally, continuously rolling the copper-aluminum composite board belt through a finished product rolling assembly (4).
  6. 6. A method of producing copper aluminum composite strip by inclined continuous casting and rolling as claimed in claim 5 wherein the copper strip is run along an incident path forming an angle with the flow and solidification direction of the aluminum melt as it enters the casting and rolling zone.
  7. 7. A method for producing a copper-aluminum composite strip by inclined continuous casting and rolling according to claim 5, wherein the copper strip enters a biting area of a casting roller (3) immediately after the semi-solid transition area is contacted with an aluminum melt for the first time to complete the rolling-down compounding.
  8. 8. The method for producing the copper-aluminum composite strip by inclined continuous casting and rolling according to claim 5, wherein the first contact line of the copper strip is limited to the semi-solid transition zone, so that the copper strip is prevented from directly entering a complete liquid aluminum melt zone, and the stability and consistency of the composite process of the copper-aluminum composite strip are improved.

Description

Device and method for producing copper-aluminum composite board strip by inclined continuous casting and rolling Technical Field The invention relates to the technical field of continuous forming of metal composite materials, in particular to a device and a method for producing a copper-aluminum composite plate strip by inclined continuous casting and rolling. Background The copper-aluminum composite board strip has the advantages of good conductivity of copper materials and light weight of aluminum materials, and is widely applied to the fields of electric power, electronics, traffic and the like. In order to meet the requirement of large-batch application, the copper-aluminum composite board is usually required to be produced by adopting a continuous process so as to improve the production efficiency and reduce the manufacturing cost. The existing preparation process of the copper-aluminum composite plate strip mainly comprises an explosion composite method, a hot rolling composite method, a cold rolling composite method, a continuous casting-rolling composite method and the like. The cold rolling composite method generally requires multi-pass rolling and subsequent annealing treatment, has long production period and higher energy consumption, is easy to generate interface oxidation problem under the high-temperature condition, and has higher requirement on stability control of composite interface quality. The continuous casting-rolling compounding method can synchronously compound with the copper strip in the solidification process of the aluminum melt, has the advantages of short flow, good continuity and the like, and gradually becomes an important production mode of the copper-aluminum composite strip. However, in the existing continuous casting and rolling process, the copper strip is usually contacted with the aluminum melt in a completely liquid state or a state that the liquid state is dominant, and the contact manner easily causes scouring and disturbance of the aluminum melt on the surface of the copper strip, so that the interface state is unstable, and further the problems of interface inclusion, local delamination or non-recombination and the like are caused. In addition, in the traditional continuous casting and rolling process, the flowing and solidification state of the aluminum melt before entering the casting roller is difficult to accurately control, and the distribution limit among the liquid region, the transition region and the solidification region is not clear, so that the first contact position of the copper strip and the aluminum melt has larger randomness, and stable and repeatable composite interface conditions are not easy to obtain. When the copper strip directly enters a complete liquid area, the fluidity of the aluminum melt is strong, and the melt is easily rolled, locally eroded or oxidized at the interface, thereby influencing the overall quality of the copper-aluminum composite board strip. Therefore, how to effectively restrict the contact stage of the copper strip and the aluminum melt in the continuous casting and rolling production process, so that the copper strip can be compounded at a proper stage in the solidification process of the aluminum melt, and meanwhile, the stability and consistency of the compounding process are improved, and the method still is a technical problem to be solved in the field of continuous production of copper-aluminum composite strips. Disclosure of Invention The invention aims to provide a device and a method for producing a copper-aluminum composite board strip by inclined continuous casting and rolling, which are used for solving the problems in the prior art. In order to solve the technical problems, the invention provides a device for producing copper-aluminum composite board strips by inclined continuous casting and rolling, which comprises a copper strip supply assembly, an aluminum melt supply and purification assembly, a casting roller and a finished product rolling assembly which are sequentially arranged along the production direction, The aluminum melt supplying and purifying assembly is obliquely arranged relative to the horizontal plane, so that a liquid region, a semi-solid transition region and a solidification region are sequentially formed in the production direction before the aluminum melt enters the casting roller; The spatial position relation between the copper strip supply assembly and the aluminum melt supply and purification assembly is set to ensure that the copper strip cannot directly enter a complete liquid region of the aluminum melt when entering a casting and rolling region, but can only contact the aluminum melt for the first time in the semi-solid transition region; The casting roller is used for enabling the copper strip and the aluminum melt to finish composite forming under the action of pressing, and the finished product rolling component is used for continuously rolling the composite copper-alumin