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1. 发明授权

US4901582A Fixture for brittle pre-crack introduction in ceramic specimen 失效
标题翻译：陶瓷样品中脆性预裂引入夹具
公开(公告)号：US4901582A
公开(公告)日：1990-02-20
申请号：US139259
申请日：1987-12-29
申请人： Tetsuro Nose , Toshimitsu Fujii
发明人： Tetsuro Nose , Toshimitsu Fujii
IPC分类号： C04B35/00 , G01N1/28 , G01N3/00 , G01N3/02 , G01N3/04 , G01N33/38
CPC分类号： G01N3/02 , G01N1/286 , G01N2203/0019 , G01N2203/0064 , G01N2203/0405 , G01N33/388
摘要： A fixture capable of a brittle pre-crack introduction of prescribed shape and size in a ceramic specimen with high reproducibility comprises an anvil provided on the upper side thereof with a central groove perpendicularly intersecting a specimen to be mounted thereon for pre-crack introduction and a groove for positioning the specimen and a platelike pusher possessing a smooth and flat lower surface. To ensure stability of the brittle pre-crack introduction, the positioning groove in the anvil is so formed as to rise rectangularly in an equal length on either side of the central groove and the overall length of the positioning groove, i.e. the sum of the lengths of the raised portions plus the width of the central groove, is kept from exceeding the length of the specimen. To enhance the results of the introduction, the lower surface of the pusher is finished with roughness of not more than 0.8S and flatness of not more than 0.01 mm.

2. 发明授权

US06761853B2 Free-cutting tool steel 失效
标题翻译：自由切削工具钢
公开(公告)号：US06761853B2
公开(公告)日：2004-07-13
申请号：US10084495
申请日：2002-02-28
申请人： Kiyohito Ishida , Katsunari Oikawa , Toshimitsu Fujii , Yukinori Matsuda , Kozo Ozaki , Seiji Kurata , Takayuki Shimizu
发明人： Kiyohito Ishida , Katsunari Oikawa , Toshimitsu Fujii , Yukinori Matsuda , Kozo Ozaki , Seiji Kurata , Takayuki Shimizu
IPC分类号： C22C3860
CPC分类号： C22C38/48 , C22C38/001 , C22C38/06 , C22C38/10 , C22C38/12 , C22C38/14 , C22C38/16 , C22C38/18 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/50 , C22C38/52
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.
摘要翻译：提供含有0.1〜2.5重量％的Fe和C的自由切削工具钢，其中WTi + 0.52WZr为0.03〜3.5重量％的Ti和Zr，WTi为Ti含量，WZr为Zr含量， WS + 0.4WSe + 0.25WTe构成0.01〜1.0重量％的S，Se和Te中的至少一个，（WTi + 0.52WZr）/（WS + 0.4WSe + 0.25WTe）构成1〜4，WS表示S 内容，WSe表示Se内容，WTe表示Te内容; 在作为主要成分的Ti和/或Zr的金属元素成分的切削性提高化合物相的截面中以面积比计，其构成为0.1〜10％，含有金属元素成分的结合成分含有 C和S，Se和Te中的任何一个。

3. 发明申请

US20070110610A1 Hot work tool steel and mold member excellent resistance to melting loss 审中-公开
标题翻译：热加工工具钢和模具构件具有优异的抗熔融损失
公开(公告)号：US20070110610A1
公开(公告)日：2007-05-17
申请号：US10583783
申请日：2003-12-19
申请人： Seiji Kurata , Toshimitsu Fujii
发明人： Seiji Kurata , Toshimitsu Fujii
IPC分类号： C22C38/22
CPC分类号： B22D17/2209 , B22C9/061 , B22D21/007 , C21D8/021 , C21D8/0426 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/16 , C22C38/22 , C22C38/24 , C22C38/30 , C22C38/38 , C22C38/44 , C22C38/46 , C22C38/60 , C23C8/26 , C23C8/32 , C23C8/38 , C23C8/50 , C23C8/56 , C23C30/00
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 ½W+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.
摘要翻译：化学成分为C：0.10〜0.35％，Si：小于0.80％，Mn：3.0％以下，Cr：2.0％以上且小于7.0％的热加工工具钢，N： 0.05％和0.50％以下，O：0.0100％以下，P：0.050％以下，Al：0.050％以下，条件是1 / W + Mo：0.3〜5.0％，C + N：0.20〜0.60％和C / N：6以下，余量：实质上为Fe，V为0.01〜0.5％。热加工工具钢表现出优异的耐熔融性，同时保持良好的韧性和良好的耐热性。

4. 发明申请

US20050252580A1 Cold work tool steel 审中-公开
标题翻译：冷作工具钢
公开(公告)号：US20050252580A1
公开(公告)日：2005-11-17
申请号：US11122860
申请日：2005-05-05
申请人： Takayuki Shimizu , Toshimitsu Fujii
发明人： Takayuki Shimizu , Toshimitsu Fujii
IPC分类号： C21D1/18 , C21D9/00 , C22C38/00 , C22C38/22 , C22C38/24 , C22C38/34 , C22C38/60
CPC分类号： C22C38/04 , C22C38/02 , C22C38/22 , C22C38/24 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/60
摘要： Cold work tool steel of the present invention comprises 0.4≦K value≦2.6 (K value Cr(wt %)−6.8C (wt %)), 15.5≦L value≦21.0 (L value=Cr(wt %)+15.5C (wt %), 0.60 wt %≦Si≦2.0 wt %, 0.10 wt %≦Mn≦1.0 wt %, 0.03 wt %
摘要翻译：本发明的冷作工具钢包含0.4≤K值≤2.6（K值Cr（wt％）-6.8C（wt％）），15.5≤L值≤21.0（L值= Cr（wt％）+ 15.5℃（重量％），0.60重量％<= Si <= 2.0重量％，0.10重量％<= Mn <= 1.0重量％，0.03重量％

5. 发明授权

US5279688A Steel shaft material which is capable of being directly cut and induction hardened and a method for manufacturing the same 失效
标题翻译：能够直接切割和感应淬火的钢轴材料及其制造方法
公开(公告)号：US5279688A
公开(公告)日：1994-01-18
申请号：US893237
申请日：1992-06-03
申请人： Kenji Isokawa , Sadayuki Nakamura , Toshimitsu Fujii
发明人： Kenji Isokawa , Sadayuki Nakamura , Toshimitsu Fujii
IPC分类号： C22C38/14
CPC分类号： C22C38/14
摘要： A steel shaft material having desirable cuttability and induction hardenability even in the form of milled stock without being subjected to any heat treatment, such as annealing, and a method for manufacturing the same. A steel ingot is prepared containing 0.38 to 0.45 wt. % of carbon, 0.15 wt % or less of silicon, 0.3 to 1.0 wt % of manganese, 0.0005 to 0.0030 wt % of boron, 0.01 to 0.05 wt % of titanium, 0.01 to 0.06 wt % of aluminum, 0.010 wt % or less of nitrogen, optionally at least one of chromium in an amount of 0.3 wt % or less and molybdenum in an amount of 0.10 wt % or less, and optionally at least one of 0.005 to 0.30 wt % of sulfur, 0.0002 to 0.005 wt % of calcium, 0.005 to 0.30 wt % of lead and 0.005 to 0.10 wt % of tellurium, and the remainder being iron and unavoidable impurities. After the ingot is heated to 1,100.degree. C. or less, the ingot is milled at a finishing temperature of 950.degree. C. or below and an area reduction rate of 70% or higher, and then cooled in the atmosphere. The steel material of the present invention has a microstructure formed of ferrite and lamellar pearlite (the amount which remains bainite being %5 or less) and having a ferrite grain size number of 6 or higher, as determined by JISG0552, a HRB hardness of 80 to 90, as determined by JISZ2245, and a DM-T decarbonized depth of 0.20 mm or less, as determined by JISG0558.
摘要翻译：即使在经过研磨的坯料的形式而不进行任何热处理如退火的情况下也具有所需切割性和感应淬透性的钢轴材料及其制造方法。制备含有0.38〜0.45重量％的钢锭。碳，0.15重量％以下的硅，0.3〜1.0重量％的锰，0.0005〜0.0030重量％的硼，0.01〜0.05重量％的钛，0.01〜0.06重量％的铝，0.010重量％以下的氮，任选的至少一种为0.3重量％以下的铬和0.10重量％以下的钼，以及0.005〜0.30重量％的硫中的至少一种，0.0002〜0.005重量％的钙，，0.005〜0.30重量％的铅和0.005〜0.10重量％的碲，其余为铁和不可避免的杂质。在将锭加热至1100℃以下之后，将该锭在950℃以下的终轧温度下研磨，将其减少70％以上，然后在大气中冷却。本发明的钢材具有由JISG0552测定的铁素体和层状珠光体（保持贝氏体的量为5％以下）且铁素体晶粒数为6以上的微结构，HRB硬度为80 〜90，JISZ2245测定，DM-T脱碳深度为0.20mm以下，由JISG0558测定。

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