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1. 发明专利

JPH0416518B2 失效
公开(公告)号：JPH0416518B2
公开(公告)日：1992-03-24
申请号：JP6566887
申请日：1987-03-23
申请人： NIPPON KOKAN KK , YUSHIRO KAGAKU KOGYO KK
发明人： WADANO KATSUMI , KAMEMURA YOSHIKI , KOJIMA SEIJI , KANDA NOBORU , HIROBE MASAHISA
IPC分类号： B21B25/04 , C10M103/06 , C10M145/40 , C10M173/02 , C10N10/06 , C10N10/16 , C10N20/06 , C10N30/00 , C10N40/24 , C10N50/02

2. 发明专利

JPH0957329A MANUFACTURE OF STEEL PIPE FOR DIESEL ENGINE FUEL INJECTION PIPE 失效
公开(公告)号：JPH0957329A
公开(公告)日：1997-03-04
申请号：JP21909695
申请日：1995-08-28
申请人： NIPPON KOKAN KK
发明人： OYAMA MOTOAKI , KAMEMURA YOSHIKI
IPC分类号： G01N29/04 , B21B23/00 , B21C1/22 , B24B5/40 , B24C1/00 , F02M55/00
摘要： PROBLEM TO BE SOLVED: To obtain a manufacturing technique for steel pipe excellent in internal properties for diesel engine fuel injection pipe at high efficiency and low cost. SOLUTION: One side 0.10-0.50mm grinding polishing is carried out by shot blasting on internal surface seamless steel pipe stock subjected to Mannesman mill piercing or mandrel will rolling and flaws are removed and further cold drawing is applied and the steel pipe for the diesel engine fuel injection pipe without any internal flaw having depth >=0.10mm is manufactured. Thereby, the steel pipe having an excellent property equal with conventional mechanical cutting method is manufactured in high efficiency and low cost.

3. 发明专利

JPH06212269A METHOD FOR SOLUTION HEAT TREATMENT OF TITANIUM-CONTAINING AUSTENITIC STAINLESS STEEL PIPE 失效
公开(公告)号：JPH06212269A
公开(公告)日：1994-08-02
申请号：JP350493
申请日：1993-01-12
申请人： NIPPON KOKAN KK
发明人： OYAMA MOTOAKI , KAMEMURA YOSHIKI
IPC分类号： C21D1/18 , C21D9/08
摘要： PURPOSE:To subject a titanium-contg. austenitic stainless steel pipe to solution heat treatment without deteriorating its corrosion resistance. CONSTITUTION:Solution heat treatment for a titanium-contg. austenitic stainless steel pipe is executed in such a manner that, while water or substance contg. water by the amt. in which the volume of steam at 100 deg.C under one atmospheric pressure is regulated to 2 to 50 times the content volume of the steel pipe 31 is held at the inside of a steel pipe 3 in which one end or both ends are opened, it is inserted into a heat treating furnace. In this way, the solution heat treatment can be executed without inhibiting the growth of austenitic grains and without deteriorating its corrosion resistance.

4. 发明专利

JPH03248718A BENT CORRECTING METHOD FOR PIPE 失效
公开(公告)号：JPH03248718A
公开(公告)日：1991-11-06
申请号：JP4559290
申请日：1990-02-28
申请人： NIPPON KOKAN KK
发明人： OYAMA MOTOAKI , KAMEMURA YOSHIKI , TANAKA KIYOMI
IPC分类号： B21D3/12
摘要： PURPOSE:To attain the high working efficiency and the standardization by applying the tensile strain of the specific range to a pipe and applying the twisting strain below the specific range in combination with the tensile strain, on the time to correct the bent of pipe. CONSTITUTION:The pipe is applied with the tensile strain of >=0.2% and

5. 发明专利

JPH0352527B2 失效
公开(公告)号：JPH0352527B2
公开(公告)日：1991-08-12
申请号：JP18641883
申请日：1983-10-05
申请人： NIPPON KOKAN KK
发明人： SAKAI JUNICHI , MATSUSHIMA ITSUKI , PPONDA MASAHARU , KAMEMURA YOSHIKI
IPC分类号： C22C38/00 , C21D6/00 , C22C38/58

6. 发明专利

JPS63234092A FLAW OCCURRENCE-PREVENTING AGENT FOR PRODUCING SEAMLESS STEEL PIPE AND METHOD FOR PREVENTING FLAW OF SEAMLESS STEEL PIPE 失效
公开(公告)号：JPS63234092A
公开(公告)日：1988-09-29
申请号：JP6566887
申请日：1987-03-23
申请人： NIPPON KOKAN KK , YUSHIRO CHEM IND
发明人： WADANO KATSUMI , KAMEMURA YOSHIKI , KOJIMA SEIJI , KANDA NOBORU , HIROBE MASAHISA
IPC分类号： B21B25/04 , C10M103/06 , C10M145/40 , C10M173/02 , C10N10/06 , C10N10/16 , C10N20/06 , C10N30/00 , C10N40/24 , C10N50/02
摘要： PURPOSE:To obtain the titled preventing agent containing a sand having specific particle size, etc., thickener and water at a specific ratio, capable of effectively preventing shoe mark by continuously feeding the agent between shoe and billet and between shoe and shell and preventing slip phenomenon during rolling operation. CONSTITUTION:The aimed preventing agent which is a water dispersion, containing (A) 3-70wt.% one or more kind selected from group consisting of sand having

7. 发明专利

JPS60211029A Ni superalloy having superior hot workability 失效
标题翻译： NI超级合金具有超高的可靠性
公开(公告)号：JPS60211029A
公开(公告)日：1985-10-23
申请号：JP6568984
申请日：1984-04-04
申请人： Nippon Kokan Kk
发明人： KAMEMURA YOSHIKI , TANIMURA MASAYUKI , TAKAOKA TATSUO , ISHIZAWA YOSHIKAZU
IPC分类号： C22C19/05
摘要： PURPOSE: To obtain an Ni superalloy having superior hot workability by providing a composition consisting of Fe and specified amounts of C, Mn, S, Ni, Cr, N and one or more among Si, Al, Ti, Zr, Ca, B, Ce and Mg adjusted so as to satisfy specified conditions.
CONSTITUTION: The composition of an Ni superalloy is composed of, by weight,
摘要翻译：目的：通过提供由Fe组成的组成和规定量的C，Mn，S，Ni，Cr，N和Si，Al，Ti，Zr，Ca，B中的一种或多种，从而获得具有优异的热加工性的Ni超合金，调整Ce和Mg以满足规定的条件。构成：Ni超级合金的组成由重量比<0.2％C，<0.2％Mn，<0.0015％S，45-80％Ni组成，（<= 15％Co可代替<= 15％的Ni），13-40％的Cr（<5％的W可以代替Cr的<5％），<0.02％的N，<2％的Si，<2％的Al，<2％的Ti ，<0.2％Zr，<0.05％Ca，<0.05％B，<0.05％Ce和<0.05％Mg，以满足方程式，余量为Fe与不可避免的杂质。

8. 发明专利

JPS6077916A MANUFACTURE OF ALLOY STEEL HAVING SUPERIOR RESISTANCE TO CORROSION AND STRESS CORROSION CRACKING 失效
公开(公告)号：JPS6077916A
公开(公告)日：1985-05-02
申请号：JP18641783
申请日：1983-10-05
申请人： NIPPON KOKAN KK
发明人： SAKAI JIYUNICHI , MATSUSHIMA IWAO , HONDA MASAHARU , KAMEMURA YOSHIKI
IPC分类号： C22C38/00 , C21D6/00 , C22C19/05 , C22C38/58 , C22F1/00 , C22F1/10
摘要： PURPOSE:To provide superior resistance to pitting corrosion and stress corrosion cracking by explaining the interrelation between resistance to pitting corrosion and stress corrosion cracking and composition and the relation between the composition and conditions during heat treatment and by selecting them in specified ranges. CONSTITUTION:The composition of an alloy steel is composed of, by weight, =25. The alloy steel is subjected to soln. heat treatment of semi-soln. heat treatment at a temp. Tf which is in the range of 950-1,250 deg.C and satisfies conditions represented by equations II, III.

9. 发明专利

JPH06184641A METHOD FOR SOLID SOLUTION HEAT TREATMENT OF TITANIUM-CONTAINING AUSTENITIC STAINLESS STEEL TUBE 失效
公开(公告)号：JPH06184641A
公开(公告)日：1994-07-05
申请号：JP34381892
申请日：1992-12-24
申请人： NIPPON KOKAN KK
发明人： OYAMA MOTOAKI , KAMEMURA YOSHIKI
IPC分类号： B21C9/00 , C21D1/74 , C21D1/76 , C21D9/08
摘要： PURPOSE:To subject an austenitic stainless steel tube contg. titanium to solid solution heat treatment without deteriorating its corrosion resistance. CONSTITUTION:This is the method for solid solution heat treatment of a titanium-contg. austenitic stainless steel tube in which, at the time of executing solid solution heat treatment, the inside of the steel tube is passed with an argon-oxygen mixed gas contg. 2 to 50vol.% oxygen by 3 to 50 times the volume in the steel tube in the process of heat treatment to form an oxidized film at the inside face of the steel tube and the inside of the tube is filled with an argon gas to prevent the infiltration of nitrogen into the steel and to prevent the formation of TiN checking the growth of crystal grains. In this way, the growth of the austenitic crystal grains is not checked, its solid solution heat treatment is perfectly executed and fine-grained layers deteriorated in corrosion resistance are not formed.

10. 发明专利

JPH04123816A METHOD FOR REMOVING LUBRICANT FROM HOT EXTRUSION STEEL TUBE 失效
公开(公告)号：JPH04123816A
公开(公告)日：1992-04-23
申请号：JP23975890
申请日：1990-09-10
申请人： NIPPON KOKAN KK
发明人： OGUMA OSAMU , KAMEMURA YOSHIKI , OYAMA MOTOAKI
IPC分类号： B21C29/00 , B21C35/02
摘要： PURPOSE:To safely remove the glass lubricant stuck to the inner surface of steel tube in a low cost by spraying a cooling water on the inner surface of the steel tube of high temperature just after hot extruding. CONSTITUTION:The cooling water is ejected on the inner surface of a steel tube 5 just after hot extruding from a jet nozzle device 4. In this time, the steel tube 5 is rotated by a rotating device so that the cooling water can be sprayed evenly with the inner surface of steel tube, and the ejecting timing of the cooling water is executed thus, by trucking the moving position of the steel tube 5 from the preceding process, automatically opening the shutoff valve 6 when the steel tube 5 enters the prescribed cooling zone and automatically closing the shutoff valve 6 after a lapse of fixed time with the timer. If the steel tube 5 is cooled as above stated, because the steel tube is in the state of high temperature, due to the difference of the coefficient of expansion of the glass lubricant and the steel tube 5 body, the shearing force is generated at the sticking surface of the glass lubricant to the steel tube 5 body, so the glass lubricant is stripped from the steel tube 5 body. And because cooling the steel tube 5 while rotating, the distribution of temperature of the inner surface of the steel tube becomes uniform, and the steel tube is not bent.

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