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51. 发明专利

JPS61123496A Pressure vessel excelient in corrosion resistance and peeling crack resistance due to hydrogen 失效
标题翻译：压力容器耐腐蚀性和耐腐蚀性，耐氢腐蚀性
公开(公告)号：JPS61123496A
公开(公告)日：1986-06-11
申请号：JP24158284
申请日：1984-11-17
申请人： Nippon Steel Corp
发明人： TOKURA MOTOI , KOIKE HIROYUKI , NAKADA YASUTOSHI , OTOGURO YASUO , ITO HIDEAKI , SAITO TOSHIAKI
IPC分类号： C22C38/00 , B23K35/30 , B23K35/362 , C22C38/48
CPC分类号： B23K35/3086
摘要： PURPOSE:To give excellent corrosion resistance and hydrogen peeling crack resistance to a titled vessel by using carbon steel or low alloy steel for an outer layer material, and using one layer or more of two phase austenite stainless steel of a specified composition containing a ferrite structure as an inner layer material. CONSTITUTION:Carbon steel or low alloy steel is used for an outer layer material, and one layer or more of two phase austenite stainless steel containing ferrite structure is used for an inner layer material. The chemical components of a weld metal of the first layer of its stainless steel part consists of 6-12 Ni, 20-80 Cr, 1-2 Mn,
摘要翻译：目的：通过使用碳钢或低合金钢作为外层材料，使用一层以上的含有铁素体结构的规定组成的两相奥氏体不锈钢，对标称容器提供优异的耐腐蚀性和耐氢剥离龟裂性作为内层材料。构成：将碳钢或低合金钢用于外层材料，使用含有铁素体结构的两相以上的两相奥氏体不锈钢层用于内层材料。其不锈钢部件第一层焊缝金属的化学成分由6-12 Ni，20-80 Cr，1-2 Mn，<0.06C，<0.9Si，<2.5Mo，<1Nb和<0.01 S为重量％，Fe为不可避免的杂质为平衡值。此外，由表达式I计算的Creq和Nieq值和tis化学组分的表达式II满足表达式III和表达式IV的关系。此外，在谢弗勒状态图中，该化学成分的组成为铁素体+奥氏体两相区域。

52. 发明专利

JP2000212645A CONTINUOUS HEATING OF STEEL MATERIAL 失效
公开(公告)号：JP2000212645A
公开(公告)日：2000-08-02
申请号：JP1360099
申请日：1999-01-21
申请人： NIPPON STEEL CORP
发明人： SAITO TOSHIAKI , MURAKAMI HIDEKI
IPC分类号： C21D1/00 , C21D9/00 , F23C5/14
摘要： PROBLEM TO BE SOLVED: To restrain the overheat of end parts in the longitudinal direction of a steel material for hot-rolling in a continuous heating furnace. SOLUTION: This continuous heating method of a steel material is the one, with which, in the case of heating the continuous hot-rolled steel material with a multi-zone and walking beam type continuous heating furnace, after quickly heating this steel material in a preheating zone and/or a heating zone at 1200-1350 deg. furnace temp., the state becoming

53. 发明专利

JPH11302724A CONTINUOUS HEATER FOR SUPPRESSING NITROGEN OXIDE FORMATION 失效
公开(公告)号：JPH11302724A
公开(公告)日：1999-11-02
申请号：JP10818598
申请日：1998-04-17
申请人： NIPPON STEEL CORP
发明人： SAITO TOSHIAKI , MURAKAMI HIDEKI
IPC分类号： C21D1/00 , C21D1/52
摘要： PROBLEM TO BE SOLVED: To suppress the amt. of NOx to be formed in the case steel products for hot rolling are heated by a combustion heater. SOLUTION: The continuous heater is a multizone type walking beam type heating furnace for continuously heating the continuous hot rolled steel products is

54. 发明专利

JPH11248360A APPARATUS AND METHOD FOR CONTINUOUSLY HEATING STEEL PIECE 失效
公开(公告)号：JPH11248360A
公开(公告)日：1999-09-14
申请号：JP5393798
申请日：1998-03-05
申请人： NIPPON STEEL CORP
发明人： MURAKAMI HIDEKI , SAITO TOSHIAKI , YOSHINAGA TAKAHIRO , NISHIMURA MOTOI
IPC分类号： C21D1/52 , C21D9/00 , F27B9/36
摘要： PROBLEM TO BE SOLVED: To obtain a product having excellent deep drawing characteristics in a slab heating for a deep drawing thin steel sheet by reducing a temperature deviation and efficiently heating a steel piece such as a hot rolling slab or the like to a predetermined temperature. SOLUTION: A side burner 10 made of a thermal storage switching burner is arranged in an inlet zone including a first zone 4 nearest a charging inlet of a continuous heating furnace having a plurality of zones. And, axial flow burners 11 are arranged at an interval via a partition wall 8 in a zone adjacent to an extraction port side of the inlet side zone. A roof burner 13 is preferably arranged in a final zone nearest the extraction port, and a flue 9 is preferably installed at an extraction port side. This apparatus is used to set a mean temperature of the steel piece at the time of bleeding from the furnace to 900 to 1,100 deg.C. Accordingly, a furnace capacity is improved due to shortening of a heating time, the fuel unit requirement is improved, and deep drawing characteristics of a thin plate product by low temperature heating can be improved.

55. 发明专利

JPH08291333A METHOD FOR CONTROLLING TEMPERATURE PATTERN IN CONTINUOUS HEATING FURNACE 失效
公开(公告)号：JPH08291333A
公开(公告)日：1996-11-05
申请号：JP9524095
申请日：1995-04-20
申请人： NIPPON STEEL CORP
发明人： HAYASHI JUNICHI , MURAKAMI HIDEKI , SAITO TOSHIAKI
IPC分类号： C21D11/00 , C21D1/52 , C21D9/00 , F27B9/02 , F27B9/36
摘要： PURPOSE: To heat a steel material to be heated to the temp. of a prescribed pattern with good accuracy by controlling the temp. pattern in the width direction of a heating furnace, in the case of successively heating plural steel materials in the continuous heating furnace. CONSTITUTION: The steel materials are heated from the upper and the lower sides thereof by spouting combustion flame in the lengthwise direction of the steel materials 1 from burners 5, 6 arranged at the upper and the lower parts holding the steel materials in between on both side walls of the heating furnace while shifting the steel materials 1 to be heated in the width direction thereof in the continuous heating furnace. In this case, the quantity of air supplied to the burners 5, 6 is more than that necessary to burn fuel and an excess oxygen flame is formed to heat the steel 1 materials. In the case of heating the steel materials 1 in the required temp. pattern out of an inclining pattern of making end parts of the steel materials 1 high temp., a concave pattern of making both edge parts thereof high temp. and a convex pattern of making the center part thereof high temp., etc., as to the distribution of temp. in the lengthwise direction of the steel materials, the fuel is charged so as to form the required temp. pattern from plural fuel charging Ports 6 arranged in the width direction of the heating furnace and burnt with the excess oxygen in the heating flame of the burner to raise the temp.

56. 发明专利

JPH06345240A DETECTING METHOD FOR SLIP ON BELT CONVEYOR AND PREVENTING METHOD FOR SLIP 失效
公开(公告)号：JPH06345240A
公开(公告)日：1994-12-20
申请号：JP13494093
申请日：1993-06-04
申请人： NIPPON STEEL CORP
发明人： SHIRAKAWA YOSHIYUKI , SAITO TOSHIAKI , OGUMA SUEO , YAMAGUCHI HIROMITSU
IPC分类号： B65G43/04 , F16H7/00
摘要： PURPOSE:To prevent the production reduction due to the stop of a line by reducing the detector maintenance cost by changing the detection of the slip of a belt conveyor from the detection at a site to the electric current detection in an electric room and preventing the slip by controlling the speed when slip is generated. CONSTITUTION:The load electric current of a driving motor for belt conveyor is inputted into a personal computer, and the sharp lowering and the sharp increase of the load electric current generated in the slip of the belt conveyor are made to match, by analyzing the variation of the electric current, and the phenomenon in which the repetitive amplitude increases is detected, and slip is detected, when the repetitive amplitude becomes the same as the specific slip pattern programmed in the personal computer. Further, slip is prevented by lowering the revolution speed of a driving motor in a step form by an ac variable speed controller, simultaneously with the detection of the slip.

57. 发明专利

JPH0630831B2 失效
公开(公告)号：JPH0630831B2
公开(公告)日：1994-04-27
申请号：JP24158284
申请日：1984-11-17
申请人： NIPPON STEEL CORP
发明人： TOKURA MOTOI , KOIKE HIROYUKI , NAKADA YASUTOSHI , OTOGURO YASUO , ITO HIDEAKI , SAITO TOSHIAKI
IPC分类号： C22C38/00 , B23K35/30 , B23K35/362 , C22C38/48

58. 发明专利

JPH0627302B2 失效
公开(公告)号：JPH0627302B2
公开(公告)日：1994-04-13
申请号：JP4819385
申请日：1985-03-13
申请人： NIPPON STEEL CORP
发明人： OTOGURO YASUO , ITO HIDEAKI , SAITO TOSHIAKI , HASHIMOTO KATSUKUNI
IPC分类号： C22C38/00 , C22C38/26 , C22C38/32

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