连轧钢管机凹型槽轧辊的研制

Development of concave mould slot roll for the steel tube rolling device

本文选用镍铬钼合金球墨铸铁材质 ,凹型槽直接铸出工艺 ,试制连轧钢管机轧辊。在冲天炉熔炼条件下 ,炉前采用轻稀土镁复合球化、孕育处理工艺 ,球化等级达到了 2～ 3级。各项性能指标达到了GB/T15 0 4- 91的要求 ,轧辊使用性能达到了国内知名厂家同类产品的先进水平。

Nickel chromium molybdenum alloy noudular cast iron and concave mould slot casting are adopted to trial produce the roll for CC machinery. Under the condition of cupola smelting, the gently compound sphereization Mg-RE and handling technology before stove is used to make the sphere reach grade 2 to 3. All performance index can meet the requirement the GB/T 1504-91 and of the advanced standard of the same product by internal well-known companies.