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1. 发明授权

US6077369A Method of straightening wire rods of titanium and titanium alloy 失效
标题翻译：矫直钛和钛合金线材的方法
公开(公告)号：US6077369A
公开(公告)日：2000-06-20
申请号：US817804
申请日：1997-03-19
申请人： Akihiko Kusano , Kinichi Kimura , Noboru Takeuchi , Isamu Takayama , Tatsuo Yamazaki , Haruo Ohguro , Yutaka Sadano , Satoshi Yamamoto
发明人： Akihiko Kusano , Kinichi Kimura , Noboru Takeuchi , Isamu Takayama , Tatsuo Yamazaki , Haruo Ohguro , Yutaka Sadano , Satoshi Yamamoto
IPC分类号： B21D3/00 , B21D3/12 , B23P15/00 , C22F1/00 , C22F1/18
CPC分类号： B21D3/12 , B23P15/002
摘要： A method of straightening a wire rod of titanium or titanium alloy wherein the rod is hot-straightened to a straight rod at the straightening temperature T and elongation .epsilon. satisfying the expression (1) or (2). The method includes hot rolling a titanium billet of .beta. titanium alloy, (.alpha.+.beta.) titanium alloy or a near .alpha. titanium alloy into a wire rod, winding the hot rolled wire rod into a coil, cold drawing the wire rod, cutting the wire rod to obtain a bent wire rod, heating the bent wire rod to a straightening temperature T while both end portions of the bent wire rod are fixed, applying a predetermined elongation .epsilon. to the wire rod, maintaining a straightening temperature T, hot-straightening the wire in accordance with the expression (2).epsilon.(T-400).gtoreq.400 (1).epsilon.(T-500).gtoreq.200 (2)and cooling the wire rod while applying tension. The method is suitable for preparing a straight rod for use in an engine valve.
摘要翻译： PCT No.PCT / JP95 / 01897 Sec。 371日期1997年3月19日 102（e）日期1997年3月19日PCT 1995年9月20日提交了一种矫直钛或钛合金线材的方法，其中将杆在矫直温度T下热矫直至直杆，伸长率ε满足表达式（1）或（2）。该方法包括将钛钛合金（α+β）钛合金或近α钛合金热轧成线材，将热轧线材卷绕成线圈，冷拔线材，切割线材杆，以获得弯曲的线材，将弯曲的线材加热至矫直温度T，同时弯曲线材的两个端部都固定，向线材施加预定的伸长率ε，保持矫直温度T，热矫直根据表达式（2）ε（T-400）> / = 400（1）ε（T-500）> / = 200（2），并施加张力来冷却线材。该方法适用于制备用于发动机气门的直杆。

2. 发明授权

US06918971B2 Titanium sheet, plate, bar or wire having high ductility and low material anisotropy and method of producing the same 有权
标题翻译：具有高延展性和低材料各向异性的钛板，板，棒或线及其制造方法
公开(公告)号：US06918971B2
公开(公告)日：2005-07-19
申请号：US10226968
申请日：2002-08-22
申请人： Hideki Fujii , Isamu Takayama , Yoshito Yamashita , Mitsuo Ishii , Kazuhiro Takahashi
发明人： Hideki Fujii , Isamu Takayama , Yoshito Yamashita , Mitsuo Ishii , Kazuhiro Takahashi
IPC分类号： C22F1/00 , C22C14/00
CPC分类号： C22F1/183 , C22C14/00
摘要： A sheet, a plate, a bar or wire is made of Ti and has high ductility and low material anistropy in a plane of a sheet or plate, or in a sectional plane of a bar or a wire and contains Fe, in mass, at 0.15-0.5%, N at 0.015-0.041 and 0, with the balance Ti and unavoidable impurities. When the Fe content is defined as [Fe], the N content as [N] and the 0 content as [0], the oxygen equivalent value Q=[0]+2.77[N]+0.1 [Fe] is 0.11-0.28.
摘要翻译：片材，板材，棒材或线材由Ti制成，并且在片材或板材的平面中或在棒材或线材的截面中具有高延展性和低材料不均匀性，其质量含量为 0.15-0.5％，N为0.015-0.041和0，余量为Ti和不可避免的杂质。当Fe含量定义为[Fe]时，N含量为[N]，0含量为[0]，氧当量值<η在线公式描述=“在线公式”end =“lead “？> Q = [0] +2.77 [N] +0.1 [Fe]是0.11-0.28。<？in-line-formula description =”In-line Formulas“end =”tail“？>

3. 发明授权

US5662745A Integral engine valves made from titanium alloy bars of specified microstructure 失效
标题翻译：由特定微结构的钛合金棒制成的发动机整体阀
公开(公告)号：US5662745A
公开(公告)日：1997-09-02
申请号：US685800
申请日：1996-07-24
申请人： Isamu Takayama , Satoshi Yamamoto , Masanori Kizaki
发明人： Isamu Takayama , Satoshi Yamamoto , Masanori Kizaki
IPC分类号： C22F1/18 , F01L3/02 , F01L3/04 , C23C8/02
CPC分类号： C22F1/183 , C22F1/186 , F01L3/02
摘要： Bars of titanium alloys suited for the manufacture of at least the stems (2), (3) of engine valves are mass-producible while maintaining good configurational and dimensional accuracies throughout the valve fabricating process and the wear-resistance imparting processes to at least the stems (2), (3), by surface oxidizing and nitriding. The alloys are of the .alpha.+.beta. type whose microstructure consists of any of an acicular .alpha.-phase consisting of acicular .alpha. crystals having a width of not smaller than 1 .mu.m, an acicular .alpha.-phase consisting of acicular .alpha. crystals having a width of not smaller than 1 .mu.m and dispersed with equiaxed .alpha. crystals, and an equiaxed .alpha.-phase consisting of .alpha. crystals whose diameter is not smaller than 6 .mu.m. Their microstructure may also include one in which the diameter of the pre-.beta. crystals in the acicular .alpha.-phase is not larger than 300 .mu.m and the width of the acicular .alpha. crystals is not smaller than 1 .mu.m and not larger than 4 .mu.m. Selection of these alloys assures very efficient manufacture.
摘要翻译：适用于至少制造发动机阀杆（2），（3）的钛合金棒可批量生产，同时在整个阀门制造过程和耐磨性赋予过程中至少保持良好的结构和尺寸精度茎（2），（3），通过表面氧化和氮化。该合金是α+β型，其微结构由任何由具有不小于1μm的宽度的针状α晶体组成的针状α相，由针状α晶体构成的针状α相，不等于1μm并用等轴α晶体分散，以及直径不小于6μm的α晶体组成的等轴α相。它们的微观结构也可以包括其中针状α相中β型晶体的直径不大于300μm，针状α晶体的宽度不小于1μm且不大于4μm m。这些合金的选择确保非常有效的制造。

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