A study on centrifugal casting of high speed steel roll

作     者：H.G.Fu X.H.Zhang 

作者机构：Department of Mechanical engineeringTsinghua UniversityBeijing 100084P.R.China Roll Made LTD.of Taiyuan Iron and Steel(Group)CompanyTaiyuan 030003ShanxiP.R.China 

出 版 物：《China Foundry》 (中国铸造(英文版))

年 卷 期：2004年第1卷第S1期

页      面：49-53页

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0802[工学-机械工程] 080201[工学-机械制造及其自动化] 

主　　题：high speed steel centrifugal casting roll segregation crackle 

摘      要：High speed steel (HSS) rolls can replace traditional rolls such as alloyed cast iron rolls and powder metallurgical (PM) hard alloy rolls. The main reasons for the replacement are that the wear resistance of low-cost alloyed cast iron rolls is poor and the cost of high-quality PM hard alloy rolls is very high. By means of centrifugal casting, HSS rolls having excellent wear resistance have been manufactured. The hardness of the HSS roll is 6.5~67 HRC, the range of variation is smaller than 2 HRC and its impact toughness is 15 J/cm^2. The wear rate of HSS rolls used in the pre-finishing stands of high-speed hot wire-rod rolling mill reaches 2.5×10^(-4)mm per ton steel. Furthermore, the manufacturing cost of HSS rolls is significantly lower than that of PM hard alloy rolls; it is only 30 percent of that of PM hard alloy rolls.