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    • 1. 发明专利
    • Hat type steel sheet pile and method for setting its shape
    • HAT型钢板及其形状设置方法
    • JP2008069631A
    • 2008-03-27
    • JP2007309935
    • 2007-11-30
    • Nippon Steel Corp新日本製鐵株式会社
    • SAIKAI KENJIMYONAKA SHINJITATSUTA MASATAKEMIURA YOSUKEEDA KAZUHIKOMAEDA FUMITAKA
    • E02D5/04
    • PROBLEM TO BE SOLVED: To provide a method for setting shape of a hat type steel sheet pile which is widened larger than 700 mm and is excellent in cross-sectional performance in comparison with the conventional one.
      SOLUTION: The method for setting shape of a hat type steel sheet pile is characterized in setting shape of the hat type steel sheet pile by adjusting height of the hat type steel sheet pile H[mm] so as to fulfill the formula related between flange width Bf[mm] and effective width B[mm]: 200 2 -0.05×B and the formula related among geometrical moment of inertia I [cm
      4 /m], height of the hat type steel sheet pile H[mm] and effective width B[mm]: -0.073×B+0.0043×I+230≤H≤380 in setting a prescribed geometrical moment of inertia by adjusting the height of the steel sheet pile H[mm] and angle θ[degree] made between a groove side extended surface of an arm and a web after setting the predetermined geometrical moment of inertia I [cm
      4 /m] and the effective width [mm].
      COPYRIGHT: (C)2008,JPO&INPIT
    • 要解决的问题:提供一种加宽大于700mm的帽型钢板桩的形状的方法,并且与常规的相比具有优异的横截面性能。 解决方案:用于设置帽型钢板桩的形状的方法的特征在于通过调节帽型钢板桩H的高度来设置帽型钢板桩的形状,以满足公式相关 在凸缘宽度Bf [mm]和有效宽度B [mm]之间:200 2 -0.05×B,并且公式与几何惯性矩I [cm 4 / m],设定规定的几何惯性矩时,帽型钢板桩H的高度[mm]和有效宽度B [mm]:-0.073×B + 0.0043×I +230≤H≤380 通过在设定预定的几何惯性矩I [cm 4 / m]和有效宽度[mm]。 版权所有(C)2008,JPO&INPIT
    • 3. 发明专利
    • H-shaped steel excellent in fire resistance and production method therefor
    • H型钢优良的耐火和生产方法
    • JP2006063442A
    • 2006-03-09
    • JP2005207097
    • 2005-07-15
    • Nippon Steel Corp新日本製鐵株式会社
    • YOSHIDA TAKUEDA KAZUHIKOKITA YASUSHI
    • C22C38/00B21B1/088B21B3/00C21D8/00C22C38/12C22C38/26C22C38/58
    • C22C38/12C22C38/02C22C38/04
    • PROBLEM TO BE SOLVED: To provide an H-shaped steel excellent in fire resistance in which a flange portion has a tensile strength of 400 Mpa or more at room temperature, a 0.2% proof stress of 157 MPa or more at 600°C, and a Charpy impact absorbed energy of 100 J or more at 0°C, and to provide a production method therefor. SOLUTION: The steel substantially contains, in mass, 0.03 to 0.15% C, 0.1 to 0.6% Mo, ≤0.06% Nb and 0.002 to 0.012% N, wherein a total mol fraction of precipitate of alloy carbides and alloy carbonitrides at 600°C is 0.2% or more, and the ratio of total mol fraction of precipitate of alloy carbonitrides etc.=(the total mol fraction of precipitate of alloy carbonitrides etc. at 300°C/the total mol fraction of precipitate of alloy carbonitrides etc. at 600°C) is 4.0 or less. The production method therefor comprises the steps of: reheating a cast steel having the above components, to 1,100 to 1,300°C; hot rolling the cast steel to form the shaped steel at 860°C or more as measured on a surface of a flange portion of the shaped steel; and after terminating the hot rolling, naturally cooling or rapidly cooling then naturally cooling the shaped steel. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供一种在室温下凸缘部的拉伸强度为400MPa以上的耐火性优异的H形钢,在600℃下为0.2MPa以上的157MPa以上的0.2%的挠曲应力 并且在0℃下夏比冲击吸收100J以上的能量,并提供其制造方法。 解决方案:钢基本上含有0.03至0.15%的C,0.1至0.6%的Mo,≤0.06%的Nb和0.002至0.012%的N,其中合金碳化物和合金碳氮化物的沉淀物的总摩尔分数在 600℃为0.2%以上,合金碳氮化物的析出物的总摩尔比等于=(合金碳氮化物的析出物在300℃下的总摩尔分数等)/合金碳氮化物的析出物的总摩尔分数 600℃)为4.0以下。 其制造方法包括以下步骤:将具有上述组分的铸钢再加热至1,100至1300℃; 在成形钢的凸缘部分的表面上测量,在860℃或更高温度下热轧铸钢以形成成形钢; 在热轧结束后,自然冷却或快速冷却,然后自然冷却成形钢。 版权所有(C)2006,JPO&NCIPI
    • 5. 发明专利
    • Rolled steel sheet pile
    • 轧制钢板
    • JP2004044150A
    • 2004-02-12
    • JP2002200847
    • 2002-07-10
    • Nippon Steel Corp新日本製鐵株式会社
    • SAIKAI KENJIMYONAKA SHINJITATSUTA MASATAKEMIURA YOSUKEEDA KAZUHIKOMAEDA FUMITAKA
    • E02D5/04
    • PROBLEM TO BE SOLVED: To provide a hut-shaped rolled steel sheet pile excellent in workability and economy.
      SOLUTION: In a hut-shaped rolled steel sheet pile 1 in which a pair of webs 4 are disposed at both ends of a central flange 2, and end flanges 3 and joints 5 and 6 are arranged at the other end of the web 4, gentle inclined part 7 is formed as the feature in the web 4 for the purpose of reduction of placing resistance in execution. In this time, a web angle may be set so that the intersection of perpendicular lines from the centers of the pair of webs positions out of the groove section of the steel sheet piles. A gentle inclined part may be formed at the corner formed by the central flange 2 and the web 4 or the corner formed by the flange 3 and the web 4.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供可操作性和经济性优异的小屋形轧制钢板桩。 解决方案:在其中一对腹板4设置在中心凸缘2的两端的小屋状轧制钢板桩1中,端部凸缘3和接头5和6设置在中心凸缘2的另一端 卷筒纸4,为了减少执行中的放置阻力,形成了柔软的倾斜部分7作为卷筒纸4中的特征。 此时,可以设定腹板角度,使得从一对腹板的中心的垂直线的交点位于钢板桩的槽部之外。 可以在由中心凸缘2和腹板4形成的角部或由凸缘3和腹板4形成的角部上形成温和的倾斜部分。(C)2004,JPO
    • 7. 发明专利
    • Rolled steel sheet pile
    • 轧制钢板
    • JP2004162459A
    • 2004-06-10
    • JP2002331762
    • 2002-11-15
    • Nippon Steel Corp新日本製鐵株式会社
    • SAIKAI KENJIMYONAKA SHINJITATSUTA MASATAKEMIURA YOSUKEEDA KAZUHIKOMAEDA FUMITAKA
    • E02D5/04B21B1/08B21B1/082
    • PROBLEM TO BE SOLVED: To provide a highly precise steel sheet pile which stabilizes a shape of a product, by enabling the uniform rolling of the steel sheet pile. SOLUTION: A cross section of a steel sheet pile body part except a joint part is formed in such a shape as to have at least one bent part, and the rolled steel sheet pile is formed in such a manner that the board thickness of the steel sheet pile body part in the rolling direction thereof is made almost uniform. For example, in the case of a hat-shaped steel sheet pile which is manufactured by hot caliber rolling, a board thickness tw of a web part, a board thickness tf of a flange part and a web angle α satisfy the expression. COPYRIGHT: (C)2004,JPO
    • 要解决的问题:通过使钢板桩的均匀轧制,提供使产品形状稳定的高精度钢板桩。 解决方案:除了接头部分之外的钢板桩体部分的横截面形成为具有至少一个弯曲部分的形状,并且轧制钢板桩以这样的方式形成,即板厚度 使钢板桩体部的轧制方向几乎均匀。 例如,在通过热口径轧制制造的帽形钢板桩的情况下,腹板部分的板厚度tw,凸缘部分的板厚度tf和腹板角度α满足表达式。 版权所有(C)2004,JPO
    • 9. 发明专利
    • H-shaped steel excellent in fire resistance and production method therefor
    • H型钢优良的耐火和生产方法
    • JP2006063443A
    • 2006-03-09
    • JP2005207185
    • 2005-07-15
    • Nippon Steel Corp新日本製鐵株式会社
    • YOSHIDA TAKUEDA KAZUHIKOKITA YASUSHI
    • C22C38/00B21B1/088B21B3/00B21B45/02C21D8/00C22C38/12C22C38/24C22C38/58
    • C22C38/12
    • PROBLEM TO BE SOLVED: To provide H-shaped steel excellent in fire resistance in which a flange portion has a ratio of strength (0.2% proof stress at 600°C)/(yield strength at room temperature) of 50% or more, a yield ratio of 80% or less at room temperature, and a Charpy impact absorbed energy of 100 J or more at 0°C, and to provide a production method therefor. SOLUTION: The steel substantially contains, in mass, 0.03 to 0.15% C, 0.1 to 0.6% Mo, ≤0.35% V and 0.002 to 0.012% N, wherein the total mol fraction of precipitate of alloy carbides and alloy carbonitrides at 600°C is 0.3% or more, and the ratio of the total mol fraction of precipitate of alloy carbonitrides etc.=(the total mol fraction of precipitate of alloy carbonitrides etc. at 300°C/the total mol fraction of precipitate of alloy carbonitrides etc. at 600°C) is 2.0 or less. The production method therefor comprises: reheating a cast steel having the above composition, to 1,100 to 1,300°C; hot rolling the cast steel; and after the terminating the hot rolling, naturally cooling or rapidly cooling then naturally cooling the shaped steel. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供耐火性优异的H型钢,其中凸缘部分具有50%的强度比(0.2℃屈服应力在600℃)/(室温屈服强度)之间的比例或 在室温下的屈服比为80%以下,在0℃下的夏比冲击吸收能为100J以上,并提供其制造方法。 解决方案:钢基本上含有0.03至0.15%的C,0.1至0.6%的Mo,≤0.35%V和0.002至0.012%的N,其中合金碳化物和合金碳氮化物的沉淀物的总摩尔分数在 600℃为0.3%以上,合金碳氮化物的析出物的总摩尔比等于=(合金碳氮化物的析出物的总摩尔数等于300℃/合金沉淀物的总摩尔分数) 600℃的碳氮化物等)为2.0以下。 其制造方法包括:将具有上述组成的铸钢再加热至1100〜1300℃; 热轧铸钢; 在热轧结束后,自然冷却或快速冷却,然后自然冷却成形钢。 版权所有(C)2006,JPO&NCIPI
    • 10. 发明专利
    • Heavy-duty corrosion-resistant coated steel sheet pile excellent in corrosion resistance at joint portion
    • 重型耐腐蚀涂层钢板在接合部分耐腐蚀性优异
    • JP2006045809A
    • 2006-02-16
    • JP2004225284
    • 2004-08-02
    • Nippon Steel Corp新日本製鐵株式会社
    • YOSHIZAKI NOBUKIYAMAMOTO MASAHIROEDA KAZUHIKO
    • E02D5/08E02D31/06
    • PROBLEM TO BE SOLVED: To provide a heavy-duty corrosion-resistant steel sheet pile which suppresses spread of separation of coating from a coating edge of a fitting joint portion.
      SOLUTION: According to the heavy-duty corrosion-resistant steel sheet pile which is set by connecting a plurality of steel sheet piles 1 together via their fitting joints, the steel sheet piles 1 are arranged such that base metal portions thereof adjacent to each other via the joint portions, are aligned with each other after fitting of the joint portions to each other. In the heavy-duty corrosion-resistant steel sheet pile, coating remaining stress around a claw is smaller than that of a conventional steel sheet pile. Therefore separation of the coating, beginning from a corrosion area at the fitting portion hardly occurs, and an influence of ocean waves is small, which leads to less spread of separation of the coating, to thereby continue a corrosion-resistant effect over a long period of time.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:提供一种抑制涂层从配合接头部分的涂覆边缘分离的扩散的重型耐腐蚀钢板桩。

      解决方案:根据通过其配合接头将多个钢板桩1连接在一起设置的重型耐腐蚀钢板桩,钢板桩1布置成使得其相邻的基础金属部分 通过接合部彼此相对配合,彼此对接。 在重型耐腐蚀钢板桩中,爪周围的涂层剩余应力小于常规钢板桩的应力。 因此,从接合部的腐蚀区域开始的涂层的分离很难发生,海浪的影响小,导致涂层分离的扩散较少,从而长时间持续耐腐蚀的作用 的时间。 版权所有(C)2006,JPO&NCIPI