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1. 发明专利

JP2002256381A FREE CUTTING TOOL STEEL 失效
公开(公告)号：JP2002256381A
公开(公告)日：2002-09-11
申请号：JP2001060809
申请日：2001-03-05
申请人： ISHIDA KIYOHITO , NAT INST OF ADV IND & TECHNOL , OIKAWA MASANARI , DAIDO STEEL CO LTD
发明人： ISHIDA KIYOHITO , OIKAWA MASANARI , FUJII TOSHIMITSU , MATSUDA YUKINORI , OZAKI KOZO , KURATA SEIJI
IPC分类号： C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide free cutting tool steel which has excellent free cutting property, and in which the anisotropy of mechanical properties in the cogging direction of the stock, particularly, in toughness is hard to occur. SOLUTION: The steel contains Ti and/or Zr so as to control the value of WTi+0.52 WZr to 0.03 to 3.5 mass% provided that the content of Ti is defined as WTi (mass%), and the content of Zr is defined as WZr (mass%). Further, at least one selected from S, Se and Te is contained so as to control the value of WS+0.4 WSe+0.25 WTe to 0.01 to 1.0 mass%, and also, so as to control the ratio of (WTi+0.52 WZr)/(WS+0.4 WSe+0.25 WTe) to 1 to 4 provided that the content of S is defined as WS (mass%), the content of Se is defined as WSe (mass%), and the content of Te is defined as WTe (mass%). Further, free cuttability impartion compound phases containing Ti and/or Zr as the main metallic element component, and essentially consisting of C and containing at least one selected from S, Se and Te as bonding components with the metalic element component are dispersedly formed in the structure in the range of 0.1 to 10% by area in the cross section.

2. 发明专利

HK1050222A1 Free-cutting tool steel. 未知
公开(公告)号：HK1050222A1
公开(公告)日：2003-06-13
申请号：HK03102403
申请日：2003-04-03
申请人： ISHIDA KIYOHITO OIKAWA KATSUNA , DOKURITSU GYOUSEI HOUJIN SANGY
发明人： ISHIDA KIYOHITO , OIKAWA KATSUNARI , FUJII TOSHIMITSU , MATSUDA YUKINORI , OZAKI KOUZO , KURATA SEIJI , SHIMIZU TAKAYUKI
IPC分类号： C22C38/00 , C22C38/06 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C
摘要： A free-cutting tool steel is provided containing Fe and C in an amount of 0.1 to 2.5 wt %, Ti and or Zr where WTi+0.52WZr constitutes 0.03 to 3.5 wt %, and WTi represents Ti content and WZr represents Zr content, at least any one of S, Se and Te where WS+0.4WSe+0.25WTe constitutes 0.01 to 1.0 wt %, and (WTi+0.52WZr)/(WS+0.4WSe+0.25WTe) constitutes 1 to 4, and WS represents S content, WSe represents Se content and WTe represents Te content; and dispersed therein a texture thereof from 0.1 to 10% in terms of area ratio in a section of a machinability improving compound phase of a metallic element component of Ti and/or Zr as major components, and a binding component for the metallic element component containing C and any one of S, Se and Te.

3. 发明专利

AU2003292572A1 Hot work tool steel and mold member excellent in resistance to melting 未知
公开(公告)号：AU2003292572A1
公开(公告)日：2005-07-14
申请号：AU2003292572
申请日：2003-12-19
申请人： DAIDO STEEL CO LTD
发明人： KURATA SEIJI , FUJII TOSHIMITSU
IPC分类号： B22C9/06 , B22D17/22 , B22D21/00 , C22C9/06 , C22C38/00 , C22C38/38 , C22C38/60
摘要： A hot work tool steel having a chemical composition in wt %: C: 0.10 to 0.35 %, Si: less than 0.80 %, Mn: 3.0 % or less, Cr: 2.0 % or more and less than 7.0 %, N: more than 0.05 % and 0.50 % or less, O: 0.0100 % or less, P: 0.050 % or less, Al: 0.050 % or less, with the proviso that 1/2W + Mo: 0.3 to 5.0 %, C + N: 0.20 to 0.60 % and C/N: 6 or less, and the balance: substantially Fe, and optionally V: 0.01 to 0.5 %. The hot work tool steel exhibits excellent resistance to melting, while retaining good toughness and good resistance to heat checking.

4. 发明专利

DE602006000160D1 未知
公开(公告)号：DE602006000160D1
公开(公告)日：2007-11-29
申请号：DE602006000160
申请日：2006-01-17
申请人： HONDA MOTOR CO LTD , DAIDO STEEL CO LTD
发明人： UETA SHIGEKI , KURATA SEIJI , SHIMIZU TETSUYA , NODA TOSHIHARU , TOMINAGA KATSUHIKO , ASAMI MAKOTO
IPC分类号： F01L3/02 , B21J9/08 , C22C19/05 , C22F1/10

5. 发明专利

DE602006000160T2 未知
公开(公告)号：DE602006000160T2
公开(公告)日：2008-07-24
申请号：DE602006000160
申请日：2006-01-17
申请人： HONDA MOTOR CO LTD , DAIDO STEEL CO LTD
发明人： UETA SHIGEKI , KURATA SEIJI , SHIMIZU TETSUYA , NODA TOSHIHARU , TOMINAGA KATSUHIKO , ASAMI MAKOTO
IPC分类号： F01L3/02 , B21J9/08 , C22C19/05 , C22F1/10

6. 发明专利

JP2011157617A Hard particle for sintered compact, and the sintered compact 审中-公开
标题翻译：用于烧结硬质合金的硬质合金和烧结的紧固件
公开(公告)号：JP2011157617A
公开(公告)日：2011-08-18
申请号：JP2010022715
申请日：2010-02-04
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： OSAKI MOTOTSUGU , UEDA SHIGENORI , KURATA SEIJI , YAMAMOTO TOMOKI
IPC分类号： B22F1/00 , C22C30/00 , C22C33/02 , C22C38/00
摘要： PROBLEM TO BE SOLVED: To provide a hard particle for a sintered compact which is inexpensive and has excellent oxidation resistance, and improves machinability without almost impairing its wear resistance, and a sintered compact which has excellent machinability.
SOLUTION: The hard particle for a sintered compact has a composition comprising, by mass, 0.3 to 2.5% C, >10.0 to 25.0% Cr, 10.0 to 30.0% Ni, >1.0 to 3.0% Mn, >20.0 to 40.0% Mo, 0.3 to 2.5% Si and 10.0 to
摘要翻译：要解决的问题：为了提供廉价且耐氧化性优异的烧结体的硬质颗粒，并且提高了几乎不损害其耐磨性的机械加工性，以及具有优异的机械加工性的烧结体。解决方案：烧结体的硬质粒子的组成为：质量分数为0.3〜2.5％，Cr为10.0〜25.0％，Ni为10.0〜30.0％，Mn为1.0〜3.0％，20.0〜40.0 ％Mo，0.3〜2.5％Si，10.0〜30.0％Co，余量为Fe与不可避免的杂质。另外，如果需要，Y可以在0.01〜0.50质量％的范围内添加。版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP2004315840A Cold working tool steel superior in machinability, and manufacturing method therefor 审中-公开
公开(公告)号：JP2004315840A
公开(公告)日：2004-11-11
申请号：JP2003107346
申请日：2003-04-11
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： KURATA SEIJI , FUJII TOSHIMITSU
IPC分类号： C21D6/00 , C22C38/00 , C22C38/38 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a cold working tool steel having superior machinability and toughness while keeping abrasion resistance high.
SOLUTION: The cold working tool steel has a composition comprising, by wt.%, 1.0-2.0% C, 2.0% or less Si, 2.0% or less Mn, 2.0-10.0% Cr, 0.1-4.0% 1/2W+Mo, 0.01-0.4% S and the balance Fe with unavoidable impurities; and has primary carbides controlled so as to occupy 1 to 8% by an area rate and have an average particle diameter of 10 μm or less. The manufacturing method includes soaking treatment at 1,100°C to 1,250°C for 5 to 50 hours after being melted and cast the steel, in order to control the area rate and the average particle diameter of the primary carbides.
COPYRIGHT: (C)2005,JPO&NCIPI

8. 发明专利

JP2004256890A FREE CUTTING HOT TOOL STEEL, AND PRODUCTION METHOD THEREFOR 审中-公开
公开(公告)号：JP2004256890A
公开(公告)日：2004-09-16
申请号：JP2003051174
申请日：2003-02-27
申请人： DAIDO STEEL CO LTD
发明人： FUJII TOSHIMITSU , KURATA SEIJI
IPC分类号： C21C7/00 , C22C38/00 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide a hot tool steel which has improved machinability while maintaining characteristics relating to a die life such as toughness and heat check resistance. SOLUTION: The free cutting hot tool steel comprises, by mass, 80 to 96% Fe, 0.3 to 0.6% C, 0.02 to 2% Si, 0.1 to 3% Mn, 0.005 to 0.05% S, 3.5 to 6.5% Cr, 0.3 to 5% Mo+1/2W, 0.05 to 2.5% V, 0.001 to 0.02% Al, 0.0005 to 0.01% Ca, 0.001 to 0.01% Mg and 0.0005 to 0.01% O. Also, the number of inclusions with double structure consisting of an oxide nuclear part and a Ca-containing sulfide phase part formed therearound is ≥5 pieces per field area of 3.5 mm 2 . Also, the content of Ca in the sulfide phase part composing the inclusions with double structure is 1 to 10%. COPYRIGHT: (C)2004,JPO&NCIPI

9. 发明专利

JP2003055734A Austenitic tool steel having excellent machinability and method for producing austenitic tool 有权
标题翻译：具有优异机械性能的奥氏体工具钢和生产奥氏体工具的方法
公开(公告)号：JP2003055734A
公开(公告)日：2003-02-26
申请号：JP2001244846
申请日：2001-08-10
申请人： Daido Steel Co Ltd , Honda Motor Co Ltd , 大同特殊鋼株式会社 , 本田技研工業株式会社
发明人： KURATA SEIJI , MATSUDA YUKINORI , TANAKA KEIZO
IPC分类号： C21D1/18 , C22C38/00 , C22C38/44 , C22C38/60
摘要： PROBLEM TO BE SOLVED: To provide low-cost tool steel which has satisfactory workability on working into a die shape, can allow a required part such as a cutting edge to exhibit hardness needed as that of a tool by partial supercooling (subzero) treatment, thus requires no quenching treatment for exhibiting hardness and precision working for removing strains attendant on the treatment, and can simplify a process for producing a die.
SOLUTION: The austenitic tool steel has a composition containing, by weight, 0.6 to 2.0% C, ≤3.0% Si, 0.2 to 15.0% Mn, 0.2 to 10.0% Cr, 0.2 to 10.0% Ni, 0.1 to 4.0% 2Mo+W, and 0.02 to 0.4% S and the balance substantially Fe, and has an austenite content of ≥80% in an ordinary temperature condition after cooling from an austenitizing temperature.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了提供在加工成模具时具有令人满意的可加工性的低成本工具钢，可以允许诸如切削刃的所需部件显示出通过部分过冷（亚零）处理所需的工具所需的硬度，因此不需要淬火处理来显示用于除去处理所伴随的应变的硬度和精度加工，并且可以简化制造模具的工艺。解决方案：奥氏体工具钢具有重量含量为0.6-2.0％的C，<= 3.0％的Si，0.2至15.0％的Mn，0.2至10.0％的Cr，0.2至10.0％的Ni，0.1至4.0％的2Mo + W和0.02〜0.4％S，余量基本上为Fe，在从奥氏体化温度冷却后的常温条件下奥氏体含量≥80％。

10. 发明专利

JP2010280950A Heat resistant steel for exhaust valve and method for producing the same 审中-公开
标题翻译：用于排气阀的耐热钢及其制造方法
公开(公告)号：JP2010280950A
公开(公告)日：2010-12-16
申请号：JP2009135020
申请日：2009-06-04
申请人： Daido Steel Co Ltd , Honda Motor Co Ltd , 大同特殊鋼株式会社 , 本田技研工業株式会社
发明人： OSAKI MOTOTSUGU , UEDA SHIGENORI , KURATA SEIJI , TSUYUNASHI TAKASHI
IPC分类号： C22C38/00 , C21D9/00 , C22C38/58
摘要： PROBLEM TO BE SOLVED: To provide a heat resistant steel for an exhaust valve, which has high high-temperature mechanical strength and satisfactory hot workability, and to provide a method for producing the heat resistant steel for an exhaust valve.
SOLUTION: The heat resistant steel for an exhaust valve is composed of a high nitrogen-high Cr austenitic steel which contains 0.50 to 0.90% C and 15.0 to 25.0% Cr as additional elements comprising essential additional elements and optional additional elements which can be optionally contained, wherein fine carbides and/or fine carbonitrides are at least precipitated into crystal grains in a dispersed manner. As the essential additional elements, C, Cr, N, Mn, Ni and P are contained, and, as the optional additional elements, Nb, Ti, Si, W, Mo, V, Co, B, Zr, Mg, Ca and Cu are contained in an amount of prescribed mass%. The heat resistant steel for an exhaust valve is produced through: a forging step; a solid solution heat treatment step where, after holding in the temperature range of 1,000 to 1,200°C, oil cooling is performed; and a step where aging treatment is performed in the temperature range of 700 to 800°C.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有高的机械强度和良好的热加工性的排气门用耐热钢，并提供一种用于排气阀的耐热钢的制造方法。解决方案：用于排气阀的耐热钢由含有0.50-0.90％C和15.0-25.0％Cr的高氮高Cr奥氏体钢构成，作为附加元素，包括必需的附加元素和任选的附加元素，其可以任选地含有，其中微细碳化物和/或细碳氮化物至少以分散的方式沉淀在晶粒中。作为必需的附加元素，含有C，Cr，N，Mn，Ni和P，并且作为任选的附加元素，Nb，Ti，Si，W，Mo，V，Co，B，Zr，Mg，Ca和 Cu的含有量为规定质量％。用于排气阀的耐热钢通过以下方式制造：锻造步骤; 固溶热处理工序，在保持在1000〜1200℃的温度范围内进行油冷却; 以及在700〜800℃的温度范围进行时效处理的工序。版权所有（C）2011，JPO＆INPIT

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