技术需求：       目前大型轮船、高速列车等使用的大功率直流电机所用大断面大宽厚比异型银铜排以及大型发电机转子用异型银铜排采取的是异型辊轧制法。本项目采用“上引连铸-连续挤压-拉拔”短流程工艺生产，产品截面宽度达到150mm，大头厚度可到达8mm，小头厚度最薄到1.2mm，平均宽厚比在40以上的大断面异型银铜排。产品具有以下优点：氧含量在10ppm以下，硬度均匀一致，且大于HB100，宽度方向尺寸公差要成线性比例，且控制在0.02mm以内。   
 
       At present, the large section and large width-thickness ratio silver-copper cooper profile that used for high-power DC motor and thesilver-copper profile that used for large-sized generator rotor  which used on large vessels、high-speed trains etc, adopted the Heterotypic roller rolling method. For this project，we use “Continuous upcasting-Continuous extrusion-Drawing” which was a short process production technology. For this silver-copper profile, the breadth of section can be 150mm, big head width can reach 8mm and for small head width can be 1.2mm,the averagewidth to thickness ratio can be over 40.The advantages of this product are as below: oxygen content is under 10ppm,; hardness is uniform, and over HB100.For this product, the width size tolerance should to be a linear scale and within 0.02mm.