Twin-Roll Strip Casting Process for the Production of Clad Strip - Twin-Roll Clad Casting

用于生产复合带材的双辊带材连铸工艺 - 双辊复合连铸

基本信息

批准号：
258106764
负责人：
Professor Dr.-Ing. Gerhard Hirt
金额：
--
依托单位：
Institut für Bildsame Formgebung (IBF)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2018-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/258106764?language=en
关键词：
Twin Roll Strip Casting Process

项目摘要

Cladded strips and plates are already used in a wide spectrum of applications and are produced in relatively significant volumes. However, the available processes for the production of clad products (cold and hot rolling, explosion cladding, alloy welding) are limited in the material combinations and due to long process chain or reduced productivity, too expensive for the application in high production volumes. Without any doubt, an increase in the application of inexpensive clad products and different material combinations would lead to significant technical, ecological and economic advantages. Developments in this direction were made in the aluminum industry by casting different aluminum alloys in a single ingot. It is not currently possible to transfer these technologies in the steel production due to the higher temperature range and the actual steel production processes limitations. An interesting alternative could be the continuous production of clad strip by twin-roll strip casting. Apparently only few researches have been conducted so far to investigate systematically and reliably the potential of thin strip casting for the production of clad strip. This process, in which strips with a thickness ranging from 1 to 3 mm can be cast, offers the important opportunity to produce clad strips with reduced energy consumption and emissions. In simplified trials performed at the IBF using short strip segments it was possible to demonstrate that due to the fast solidification process it is possible to join also very different material classes. As an example, copper and titanium strips embedded in a larger steel strip. Consequently, the proposed project aims at the following main targets:1. Prove the basic feasibility of the continuous cladding of metallic strips with the twin-roll strip casting process.2. Investigate the process limits in relation to the possible thickness ratio between cladding and clad material and the selected material combination.3. Evaluate the resistance of the joint in correlation to the casting parameters.To reach these targets, the proper strip thicknesses and casting parameters will be initially roughly defined with the help of a numerical model. An insertion system for the cladding strip will be designed and constructed and preliminary tests performed. Subsequently, the numerical model will be improved and a systematic experimental campaign will be aimed at the investigation of the process limitations and application potentials. The obtained clad strips will be characterized in terms of properties and processing possibilities.

复合带材和板材已广泛应用于各种应用，并且产量相对较大。然而，用于生产复合产品的可用工艺（冷热轧、爆炸复合、合金焊接）在材料组合方面受到限制，并且由于工艺链长或生产率降低，对于大批量应用来说过于昂贵。毫无疑问，增加廉价复合产品和不同材料组合的应用将带来显着的技术、生态和经济优势。铝工业在这一方向上取得了进展，通过在单个铸锭中铸造不同的铝合金来实现。由于较高的温度范围和实际钢铁生产工艺的限制，目前还不可能将这些技术转移到钢铁生产中。一个有趣的替代方案是通过双辊带材连铸连续生产复合带材。显然，迄今为止，只有很少的研究能够系统、可靠地研究薄带连铸在复合带材生产中的潜力。该工艺可铸造厚度为 1 至 3 毫米的带材，为生产降低能耗和排放的复合带材提供了重要机会。在 IBF 使用短带段进行的简化试验中，可以证明，由于快速凝固过程，也可以连接非常不同的材料类别。例如，将铜带和钛带嵌入较大的钢带中。因此，拟议项目旨在实现以下主要目标： 1．论证了双辊薄带连铸工艺连续熔覆金属带材的基本可行性。 2．研究与包层和包层材料之间可能的厚度比以及所选材料组合相关的工艺限制。3．评估与铸造参数相关的接头阻力。为了达到这些目标，将借助数值模型初步粗略地定义适当的带材厚度和铸造参数。将设计和建造覆层带的插入系统并进行初步测试。随后，将改进数值模型，并进行系统的实验活动，以研究工艺局限性和应用潜力。所获得的复合带材将在性能和加工可能性方面进行表征。