The twin-roll casting (TRC) process is typically used to fabricate laminated metal cladding strips with rectangular cross-sections, and it has the advantages of short flow, low energy consumption, green environmental protection, etc. Recently, a twin-roll solid-liquid cast-rolling bonding (TRSLCRB) process was proposed based on the TRC process to fabricate metal cladding materials with round cross-sections. However, the nonuniformity of heat transfer and mass transfer along the circumferential direction finally influences the performance uniformity. Therefore, a multi-roll solid-liquid cast-rolling bonding (MRSLCRB) process was proposed integrating cast-rolling bonding technology and multi-roll groove rolling technology. The steady-state thermal resistance network was established, and the influences of nominal roll radius, groove radius, and molten pool height on the heat transfer and mass transfer were studied systematically. 3-D steady-state thermal-fluid coupled simulation models of twin-roll, three-roll, and four-roll layouts were established. The results indicate that increasing casting roll number can improve the nominal cast-rolling velocity, service life of the casting roll, temperature uniformity, strain uniformity, and strain rate uniformity through regulating the heat transfer and mass transfer. Considering the manufacturing feasibility, the MRSLCRB equipment based on the three-roll layout was designed. Cu/steel cladding bars with uniform circumferential performance were fabricated, and the forming mechanism was revealed. The multi-field coupled analysis method provides a way to control heat and mass transfer uniformity, and the successful attempts of various typical metal cladding materials inspire exploring new forming processes.

双辊铸造（TRC）工艺通常用于制造矩形截面的层压金属复合带，具有流程短、能耗低、绿色环保等优点。基于TRC工艺提出了液态铸轧结合（TRSLCRB）工艺来制造具有圆形横截面的金属包覆材料。然而，沿圆周方向传热和传质的不均匀性最终影响了性能的均匀性。为此，提出了一种将铸轧结合技术和多辊槽轧技术相结合的多辊固液铸轧结合（MRSLCRB）工艺。建立稳态热阻网络，研究了公称轧辊半径、沟槽半径、系统地研究了熔池高度对传热传质的影响。建立了双辊、三辊和四辊布局的 3-D 稳态热流耦合仿真模型。结果表明，增加铸辊数量可以通过调节传热传质来提高铸辊的公称铸轧速度、使用寿命、温度均匀性、应变均匀性和应变率均匀性。考虑制造可行性，设计了基于三辊布局的MRSLRB设备。制备了周向性能均匀的铜/钢复合棒材，揭示了其形成机理。多场耦合分析方法提供了一种控制传热和传质均匀性的方法，