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21. 发明专利

JPS5623257A CRRMO STEEL FOR PRESSURE VESSEL HAVING SUPERIOR SR EMBRITTLEMENT RESISTANCE 失效
公开(公告)号：JPS5623257A
公开(公告)日：1981-03-05
申请号：JP9805779
申请日：1979-08-02
申请人： KAWASAKI STEEL CO
发明人： UEDA SHIYUUZOU , ISHIKAWA MASAAKI
IPC分类号： C22C38/00 , C21D1/26 , C21D9/50 , C22C38/22
摘要： PURPOSE:To obtain the titled Cr-Mo steel free from deterioration in the strength and toughness even in long-time stress relief annealing at a high temp. after welding by combinedly adding a very small amount of Al and B to steel components. CONSTITUTION:This Cr-Mo steel consists of, 0.03-0.2wt% c, 0.03-1% Si, 0.3- 0.7% Mn, 0.7-1.6% Cr, 0.4-0.7% Mo, 0.015-0.12% Al, 0.0003-0.0025% B and the balance Fe. One or more among

22. 发明专利

JPS54112318A HIGH TENSILE ANNEALING TEMPERING STEEL 失效
公开(公告)号：JPS54112318A
公开(公告)日：1979-09-03
申请号：JP2030578
申请日：1978-02-23
申请人： KAWASAKI STEEL CO
发明人： OOHASHI NOBUO , KAMATA AKIO , UEDA SHIYUUZOU , ISHIKAWA MASAAKI
IPC分类号： C22C38/00 , C22C38/12

23. 发明专利

JPS5231917A MANUFACTURING METHOD OF STRUCTURAL STEEL* HAVING SUPERIOR WELDING PROP ERTY OF LARGE HEAT INPUT 失效
公开(公告)号：JPS5231917A
公开(公告)日：1977-03-10
申请号：JP10798475
申请日：1975-09-08
申请人： KAWASAKI STEEL CO
发明人： GOTOU ISAMU , TEGOSHI TOKUSHI , TANAKA TOMOO , UEDA SHIYUUZOU , ISHIKAWA MASAAKI
IPC分类号： C21C7/00 , C21C7/076 , C22C33/04 , C22C38/00
摘要： PURPOSE:To supply 40 - 60 Kg grade non-heattreating type and heattreating type structural steel and its low temperature tenacity of part of large heat input welding is nearly equal to the mother body.

24. 发明专利

JPS60124244A SURFACE COATED STEEL PLATE 失效
公开(公告)号：JPS60124244A
公开(公告)日：1985-07-03
申请号：JP23333683
申请日：1983-12-10
申请人： KAWASAKI STEEL CO
发明人： IMANAKA MAKOTO , OKA YUTAKA , UEDA SHIYUUZOU , IMAZU TSUKASA
IPC分类号： B32B15/088 , B32B15/08 , B32B15/092

25. 发明专利

JPS60115384A PRODUCTION OF COMPOSITE MATERIAL BY BRAZING AND ROLLING 失效
公开(公告)号：JPS60115384A
公开(公告)日：1985-06-21
申请号：JP22188183
申请日：1983-11-24
申请人： KAWASAKI STEEL CO
发明人： OKA YUTAKA , IMANAKA MAKOTO , UEDA SHIYUUZOU
IPC分类号： B21B1/22 , B23K1/19 , B23K1/20 , B23K20/04 , B23K35/40
摘要： PURPOSE:To produce a composite material having a high rate of joining by subjecting either one or both of the joint surfaces of a base metal such as iron and a cladding metal consisting a metallic material to nickel plating and brazing the joint surfaces by copper, etc. as a brazing material then rolling the joined material at the m.p. of the brazing material or below. CONSTITUTION:Either one or both joint surfaces of a base metal such as a iron or iron alloy and a cladding metal consisting of a metallic material are subjected to nickel plating. A brazing material consisting of copper having the m.p. lower than the m.p. of the cladding metal or a copper alloy such as Cu-Mn alloy or the like is sandwiched between the base metal and the cladding metal in such a way that the above-mentioned plating layer contacts with the brazing material and these metals are heated at the temp. between the m.p. of said brazing material and the base metal and higher than 1,050 deg.C, by which the metals are brazed. The slab obtd. in such a way is rolled at the m.p. of the above-mentioned brazing material or below to prevent intrusion of the copper into the grain boundary and enriching of the iron in the weld zone. The composite member which can prevent the cracking in the stage of executing welding and the decrease in resistance to fatigue during use and has a high joining rate is obtd.

26. 发明专利

JPS6077945A MANUFACTURE OF METALLIC MATERIAL CONTAINING DISPERSED PARTICLE 失效
公开(公告)号：JPS6077945A
公开(公告)日：1985-05-02
申请号：JP18442483
申请日：1983-10-04
申请人： KAWASAKI STEEL CO
发明人： OKA YUTAKA , IMANAKA MAKOTO , UEDA SHIYUUZOU
IPC分类号： B22D19/14 , C22C1/10
摘要： PURPOSE:To disperse uniformly nonmetallic powder in molten metal by mixing the nonmetallic powder with metallic powder and adding the mixed powder to the molten metal. CONSTITUTION:One or more among Al2O3, MgO, ZrO2, SiO2, CaO, etc. each ground to = about 1,000kgf/cm pressure, sintered in a reducing atmosphere, and blown into molten metal with an inert gas. The nonmetallic particles are dispersed easily, efficiently and uniformly in the molten metal.

27. 发明专利

JPS6040662A PRODUCTION OF COPPER OR COPPER ALLOY CLAD STEEL BY MELTING METHOD 失效
公开(公告)号：JPS6040662A
公开(公告)日：1985-03-04
申请号：JP15006383
申请日：1983-08-17
申请人： KAWASAKI STEEL CO
发明人： IMANAKA MAKOTO , OKA YUTAKA , UEDA SHIYUUZOU
IPC分类号： B22D19/16 , B22D19/08 , B23K20/00
摘要： PURPOSE:To manufacture a satisfactory copper or copper alloy clad steel plate without shrinkage cavity and variance in strength by abutting a heat insulating or heating member on the end part of the circumference of the steel plate and pouring a molten cladding material of copper or copper alloy atop the steel plate. CONSTITUTION:A heat insulating material or heater is pessed via a flask plate to the end edge of the circumference of a steel plate consisting of a base material. Molten copper or copper alloy to be clad is poured atop the base material. The end part which is cooled faster is heat insulated in this case and therefore the solidification progresses uniformly and the generation of shrinkage cavity and variance in strength is obviated. A much better result is obtd. if the surface of the molten metal is covered with a suitable flux.

28. 发明专利

JPS58210117A MANUFACTURE OF HIGH STRENGTH STEEL WITH LOW YIELD RATIO 失效
公开(公告)号：JPS58210117A
公开(公告)日：1983-12-07
申请号：JP9262982
申请日：1982-05-31
申请人： KAWASAKI STEEL CO
发明人： AYAMA YOSHIYA , WATANABE SHIYUUJI , UEDA SHIYUUZOU
IPC分类号： C22C38/00 , C21D1/18 , C21D6/00 , C21D8/00
摘要： PURPOSE:To manufacture a high strength steel with a lowered yield ratio by rolling a steel contg. specified percentages of Ni, Cr, Mo, C, Si, Mn and Al and hardening the rolled steel at a specified temp. to regulate the amount of residual austenite. CONSTITUTION:A steel contg., by weight, 9.6-13.0% Ni, 0.1-2.4% Cr, 0.1-5.0% Mo, 0.07-0.25% C, =10% austenite which remains after the hardening.

29. 发明专利

JPS5891151A STEEL FOR HIGH-TEMPERATURE AND HIGH-PRESSURE APPARATUS 失效
公开(公告)号：JPS5891151A
公开(公告)日：1983-05-31
申请号：JP18922581
申请日：1981-11-27
申请人： KAWASAKI STEEL CO
发明人： UEDA SHIYUUZOU , ISHIKAWA MASAAKI
IPC分类号： C22C38/00 , C22C38/12 , C22C38/48
摘要： PURPOSE:To obtain an economical steel equal to a C-Mo steel or an Mn-Mo steel in creep characteristics and having superior weldability and toughness by reducing the amount of Mo in the C-Mo steel corresponding to ASTM A204-B or the Mn-Mo steel corresponding to ASTM A302-B and by adding Nb or V. CONSTITUTION:This steel for an apparatus which is operated frequently or sometimes at 400-530 deg.C creep temp. under partial pressure of H2 consists of 0.02-0.22% C, 0.02-0.80% Si, 0.6-2.00% Mn, 0.1-0.4% Mo, 0.005- 0.1% Al, 0.005-0.07% Nb and/or 0.005-0.07% V and the balance essentially Fe or further contains one or more among 0.03-0.5% each of Cu, Ni and Cr. This steel is subjected to normalizing or normalizing and tempering. Nb and V produce an effect of increasing the creep strength especially in the presence of Mo, yet excess Nb and V increases the reheating crack sensitivity during stress relief annealing after welding. Cu, Ni and Cr increase the creep strength.

30. 发明专利

JPS5877785A PRODUCTION OF ROLLED CLAD STEEL OF COPPER OR COPPER ALLOY 失效
公开(公告)号：JPS5877785A
公开(公告)日：1983-05-11
申请号：JP17417981
申请日：1981-10-30
申请人： KAWASAKI STEEL CO
发明人： IMANAKA MAKOTO , ISHIKAWA MASAAKI , UEDA SHIYUUZOU
IPC分类号： B23K20/00 , B23K20/04
摘要： PURPOSE:To produce rolled clad steel having excellent joining strength with low rolling reduction in the stage of producing a clad material of copper or a copper alloy and steel by controlling the surface temp. of the steel base material and the central temp. of the cladding metal of copper at specific temps. in rolling these materials. CONSTITUTION:In the stage of producing rolled clad steel of copper or a copper alloy and steel, copper or copper alloy plates 4 as 2 sheets of cladding metals are brought into contact with the inner sides of steel plates 2 which are base materials via release agents. Packing materials 8 are packed in the end parts to form these into sandwich construction. Or a dummy material 10, a release material 6, a cladding metal 4 and a base material 2 are formed in a laminar state to a composite slab, and such slag is rolled to produce clad steel. In this time, the materials are rolled by controlling temps. in such a way that the surface temp. of the dummy material 10 is kept lower by >=100 deg.C than the temp. of the metal 4 and that the central temp. of the metal 4 has a temp. difference within 300 deg.C from the m.p. thereof. The copper clad steel having excellent joining strength is produced with low rolling force.

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