宝钢二期工程中的1900毫米连铸机是第一重型机器厂同日本合作制造的产品。其中导辊材料及堆焊工艺研究,是国家机械委的科研课题。这种导辊材料及堆焊的技术要求高,生产难度大。该厂采用电炉冶炼、真空浇注的工艺方法,研制成功了导辊材料。继而,又从国外引进了两台带板堆焊设备及有关工艺装备,经 The 1900mm continuous caster in Baosteel Phase II project is the first heavy machinery factory to manufacture products in cooperation with Japan. One guide roller material and surfacing technology research, is the National Machinery Commission’s research project. This guide roller materials and welding of high technical requirements, production difficult. The plant used electric smelting, vacuum casting process, the successful development of the guide roller material. Then, they imported two sets of surfacing equipment and related process equipment from abroad