Wire material for non-heat treated component, steel wire for non-heat treated component, and non-heat treated component and manufacturing method thereof
首页>
外国专利>
Wire material for non-heat treated component, steel wire for non-heat treated component, and non-heat treated component and manufacturing method thereof
Wire material for non-heat treated component, steel wire for non-heat treated component, and non-heat treated component and manufacturing method thereof
展开▼
机译:非热处理零件用线材,非热处理零件用钢丝,非热处理零件及其制造方法
展开▼
页面导航
摘要
著录项
相似文献
摘要
A wire material used for manufacturing a non-heat treated component whose tensile strength is 900 MPa to 1300 MPa, containing, in mass %: C: 0.20% to 0.50%, Si: 0.05% to 2.0%, Mn: 0.20% to 1.0%, being limited to contain P: 0.030% or less, S: 0.030% or less, N: 0.005% or less, F1 defined by the following expression (1) is less than 0.60, with the balance made up of Fe and inevitable impurities, wherein a metal structure contains a pearlite structure of 64×(C %)+52% or more in a volume fraction, with the balance made up of one kind or two kinds of a pro-eutectoid ferrite structure and a bainite structure, an average block grain diameter of the pearlite structure at a region from a surface layer to 0.1 D is 15 μm or less when a diameter of the wire material is set to be D, and (the average block grain diameter of the pearlite structure at the region from the surface layer to 0.1 D)/(an average block grain diameter of the pearlite structure at a range from 0.25 D to a center) is less than 1.0.F1=C (%)+Si (%)/24+Mn (%)/6 (1)
展开▼
机译:用于制造抗拉强度为900 MPa至1300 MPa的非热处理部件的线材,以质量%计:C:0.20%至0.50%,Si:0.05%至2.0%,Mn:0.20%至1.0 %,限定为包含P:0.030%以下,S:0.030%以下,N:0.005%以下,由下式(1)定义的F1小于0.60,余量由Fe构成,不可避免。金属组织中,珠光体组织的体积分数为64×(C%)+ 52%以上,并且余量由原共析铁素体铁素体组织和贝氏体组织中的一种或两种构成,当将线材的直径设为D时,从表面层到0.1D的区域的珠光体组织的平均嵌段粒径为15μm以下,并且从表面层到0.1D的区域)/(珠光体组织的平均嵌段粒径在0.25D到中心的范围内)小于1.0。<?in-line-formulae description =“在线表达式” end =“ lead”?> F1 = C(%)+ Si(%)/ 24 + Mn(%)/ 6(1)<? -formulae description =“在线公式” end =“ tail”?>
展开▼