公开(公告)号：EP3272896A1

公开(公告)日：2018-01-24

申请号：EP16765035.7

申请日：2016-03-16

申请人： Nippon Steel & Sumitomo Metal Corporation ,  DENSO CORPORATION

发明人： YUYA, Masato ,  TAKASUGA, Motoki ,  MAKINO, Taizo ,  HIGASHIDA, Masashi ,  HASEGAWA, Tatsuya ,  NISHIWAKI, Tadashi ,  MORITA, Kouji ,  ITO, Toshimasa ,  TANIMURA, Yoshiro ,  FUKUOKA, Tomomitsu

IPC分类号： C22C38/00 ,  C22C38/60 ,  C21D8/00 ,  C21D9/00

摘要： Age hardenable steel is low in hardness after hot forging, providing a machine part with the desired fatigue strength and yield strength by aging treatment, and high in toughness after aging treatment, comprising C: 0.09 to 0.20%, Si: 0.01 to 0.40%, Mn: 1.5 to 2.5%, S: 0.001 to 0.045%, Cr: over 1.00% to 2.00%, Al: 0.001 to 0.060%, V: 0.22 to 0.55%, N: over 0.0080 to 0.0170%, and a balance of Fe and impurities, where an area rate of bainite structures is 80% or more, an effective V ratio (amount of dissolved V/total amount of V) is 0.9 or more, a P and Ti in the impurities is P: 0.03% or less and Ti: less than 0.005%, and the chemical composition is one where the following F1 is 1.00 or less and the F2 is 0.30 or more: F 1 = C + 0.1 × Si + 0.2 × Mn + 0.15 × Cr + 0.35 × V F 2 = − 4.5 × C + Mn + Cr − 3.5 × V

摘要翻译： 时效硬化钢在热锻后硬度低，通过时效处理可以提供具有所需疲劳强度和屈服强度的机械部件，并且时效处理后的韧性高，包括C：0.09至0.20％，Si：0.01至0.40％ ，Mn：1.5〜2.5％，S：0.001〜0.045％，Cr：超过1.00％〜2.00％，Al：0.001〜0.060％，V：0.22〜0.55％，N：超过0.0080〜0.0170％ 贝氏体组织的面积率为80％以上，有效V比率（溶解V量/ V总量）为0.9以上的杂质，杂质中的P和Ti为0.03％以下 和Ti：小于0.005％，并且化学组成为以下F1为1.00以下且F2为0.30以上的化学组成：F1 = C + 0.1×Si + 0.2×Mn + 0.15×Cr + 0.35×V F2 = -4.5×C +的Mn + Cr系3.5×V

公开(公告)号：EP3190199A1

公开(公告)日：2017-07-12

申请号：EP15837445.4

申请日：2015-08-10

申请人： Nippon Steel & Sumitomo Metal Corporation ,  Honda Motor Co., Ltd.

发明人： NISHITANI, Shigefumi ,  TAKASUGA, Motoki ,  HASEGAWA, Tatsuya ,  YUYA, Masato ,  TAKITANI, Yoshihiro

IPC分类号： C22C38/00 ,  C22C38/60

CPC分类号： C22C38/04 ,  C21D1/06 ,  C21D9/28 ,  C21D9/30 ,  C21D2211/002 ,  C22C38/00 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/08 ,  C22C38/12 ,  C22C38/14 ,  C22C38/16 ,  C22C38/38 ,  C22C38/42 ,  C22C38/58 ,  C22C38/60 ,  C23C8/32 ,  C23C8/80 ,  F16C3/06 ,  F16C2204/74

摘要： A non-thermal refined nitrocarburized component, including a steel material of a base metal, the steel material having a chemical composition consisting of: by mass%, C: 0.35 to 0.50%; Si: 0.10 to 0.35%; Mn: 2.3 to 2.8%; S: 0.01% or less; N: 0.0030 to 0.0250%; Cu: 0 to 1.0%; Mo: 0 to 0.3%; Ni: 0 to 0.5%; Ti: 0 to 0.020%, and the balance: Fe and impurities, wherein 3.10≤(0.316C+0.122)×(0.7Si+1)×(5.1Mn-1.12)×(0.364Ni+1)×(2.16Cr+1)×(3Mo+1)≤6.00, and the impurities include P: 0.08% or less, Al: 0.05% or less, and Cr: less than 0.20%, and wherein at a stress concentrated region, an HV hardness at a position of 0.05 mm from a surface is 410 to 480, an HV hardness at a position of 1.0 mm from the surface is 200 or more, a compound-layer depth is 5µm or less, and a metal micro-structure of the base metal is a bainite micro-structure. The non-thermal refined nitrocarburized component has an excellent bending straightening property and a high fatigue strength.

摘要翻译： 1。一种非热精炼氮碳共渗成分，其特征在于，含有母材钢材，所述钢材的化学成分以质量％计含有C：0.35〜0.50％ Si：0.10〜0.35％ Mn：2.3〜2.8％; S：0.01％以下; N：0.0030〜0.0250％ Cu：0至1.0％; Mo：0至0.3％; Ni：0至0.5％; Ti：0〜0.020％，其余为Fe和杂质，3.10≤（0.316C + 0.122）×（0.7Si + 1）×（5.1Mn-1.12）×（0.364Ni + 1）×（2.16Cr + 1）×（3Mo + 1）≤6.00，并且所述杂质包括P：0.08％或更少，Al：0.05％或更少，以及Cr：少于0.20％，并且其中在应力集中区域， 距表面0.05mm的位置为410〜480，距表面1.0mm处的HV硬度为200以上，化合物层深度为5μm以下，母材的金属微观结构为 贝氏体微观结构。 非热精炼氮碳共渗组分具有优异的弯曲矫直性能和高疲劳强度。

公开(公告)号：EP3279356A1

公开(公告)日：2018-02-07

申请号：EP16772353.5

申请日：2016-03-17

申请人： Nippon Steel & Sumitomo Metal Corporation

发明人： NEISHI, Yutaka ,  YUYA, Masato ,  HASEGAWA, Tatsuya ,  TAKASUGA, Motoki ,  HIGASHIDA, Masashi ,  MATSUMOTO, Hitoshi ,  MAKINO, Taizo

IPC分类号： C22C38/00 ,  C21D8/06 ,  C22C38/60

CPC分类号： C21D9/525 ,  C21D6/004 ,  C21D6/005 ,  C21D6/008 ,  C21D6/02 ,  C21D8/065 ,  C21D9/0068 ,  C21D2211/002 ,  C22C38/001 ,  C22C38/002 ,  C22C38/005 ,  C22C38/02 ,  C22C38/06 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  C22C38/60

摘要： Age hardening steel excellent in machinability before aging treatment and excellent in fatigue characteristics, toughness, and low cycle fatigue characteristics after aging treatment, that is, age hardening steel containing predetermined amounts of C, Si, Mn, S, Cr, Al, V, Nb, Ca, and REM, limiting contents of P, Ti, and N to predetermined amounts or less, having a balance of Fe and impurities, having an area ratio of bainite structures of 70% or more, and, furthermore, having a chemical composition where F1 expressed by C+0.3×Mn+0.25×Cr is 0.68 or more, F2 expressed by C+0.1×Si+0.2×Mn+0.15×Cr+0.35×V is 0.85 or less, F3 expressed by -4.5×C+Mn+Cr-3.5×V is 0.00 or more, and F4 expressed by 10×Ca+REM is 0.012 to 0.08, is provided. Note that, the symbols of elements in the formulas showing F1 to F4 mean the contents by mass% of those elements.

摘要翻译： 时效处理前的切削性优异，时效处理后的疲劳特性，韧性，低循环疲劳特性优异的时效硬化钢，即含有规定量的C，Si，Mn，S，Cr，Al，V， Nb，Ca和REM，将P，Ti和N的含量限定在规定量以下，余量由Fe和杂质构成，贝氏体组织的面积率为70％以上，并且进一步含有化学式 其中由C + 0.3×Mn + 0.25×Cr表示的F1为0.68或更多，由C + 0.1×Si + 0.2×Mn + 0.15×Cr + 0.35×V表示的F2为0.85或更小，F3表示为-4.5× C + Mn + Cr-3.5×V为0.00以上，由10×Ca + REM表示的F4为0.012〜0.08。 另外，表示F1〜F4的式子中的元素的符号是指以这些元素的质量％表示的含量。