专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH0211296A MANUFACTURE OF FLUX-CORED WELDING WIRE 失效
公开(公告)号：JPH0211296A
公开(公告)日：1990-01-16
申请号：JP15927688
申请日：1988-06-29
申请人： KAWASAKI STEEL CO
发明人： AYAMA YOSHIYA
IPC分类号： B23K35/40
摘要： PURPOSE:To prevent torsion at the time of wire drawing by filling a flux, and thereafter, executing wind-clamping so that a joint part is positioned in the top part of a wire cross section, and thereafter, working continuously a notch-like groove in both side face parts of the wire and bringing it wire drawing to a prescribed wire diameter. CONSTITUTION:A wire is formed to a U-shape and the inside of the U-shape is filled with a flux 9, and thereafter, wind-clamping is executed so that the joint part 6 of the wire is positioned in roughly the top part of the wire cross section. Subsequently, while pressing down the joint part 6 of the wire and its opposite side by a pressing roller 11, a notch-like groove 10 is worked continuously on both side faces of a welding wire by a grooving side roller 12. In such a way, a prismatic groove enters into both side faces of the wire 1, a resistance against the torsion becomes high, and the torsion at the next wire drawing working stage can be prevented.

2. 发明专利

JPH08257752A THREE ELECTRODE TWO LAYER SUBMERGED ARC WELDING OF THICK PLATE 失效
公开(公告)号：JPH08257752A
公开(公告)日：1996-10-08
申请号：JP6112195
申请日：1995-03-20
申请人： KAWASAKI STEEL CO
发明人： HAYAKAWA NAOYA , SAKAGUCHI SHUICHI , AYAMA YOSHIYA , TAKAHASHI KAZUYOSHI
IPC分类号： B23K9/18 , B23K9/00
摘要： PURPOSE: To achieve high efficiency welding by executing large heat input two layer/two pass welding of a thick plate exceeding 50mm thickness. CONSTITUTION: In executing full penetration one side three electrode submerged arc welding to a thick plate with two passes, welding of a second layer is executed while satisfying conditions in the following, (1) pole distance (dNT) (mm) between M pole and T pole; 30-130, (2) M pole current/T pole current; 0.5-1.2, (3) shortest distance (b) mm on base material surface from groove end of one side to M pole end part; t/9-t/3, (4) shortest distance (c) (mm) on base material surface from groove end of other side to T pole end part; t/8-t/2, here (t) is a groove width (mm) on base material surface.

3. 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.

4. 发明专利

JPS57210956A TOUGH REFINED WEAR RESISTANT STEEL 失效
公开(公告)号：JPS57210956A
公开(公告)日：1982-12-24
申请号：JP9489481
申请日：1981-06-19
申请人： KAWASAKI STEEL CO
发明人： WATANABE SHIYUUJI , SUZUKI SHIGEHARU , AYAMA YOSHIYA , KAMATA AKIO
IPC分类号： C22C38/00 , C21D6/00 , C22C38/32 , C22C38/38 , C22C38/54
摘要： PURPOSE:To obtain a tough refined wear resistant steel reducing the occurrence of cracks during drawing or strain correction by further adding REM, Zr, Ca, etc. to a wear resistant steel having a specified composition by restricted amounts according to the S content. CONSTITUTION:A steel consisting of, by weight, 0.21-0.35% C, 0.05-1.0% Si, 0.30-2.0% Mn, 0.5-6.0% Cr, 0.10-0.50% Cu, 0.0005-0.0030% B, 0.04-0.08% Al, =1 kind of element selected from 2.0-8.0 times as much REM and Zr as S and 0.2-3.0 times as much Ca as S, and the balance Fe with inevitable impurities is refined. To said composition may be added >=1 kind of element selected from

5. 发明专利

JPH07328793A LARGE HEAT INPUT SUBMERGED ARC WELDING OF THICK STEEL PLATE EXCELLENT IN TOUGHNESS OF WELD METAL 失效
公开(公告)号：JPH07328793A
公开(公告)日：1995-12-19
申请号：JP12368794
申请日：1994-06-06
申请人： KAWASAKI STEEL CO
发明人： HAYAKAWA NAOYA , SAKAGUCHI SHUICHI , AYAMA YOSHIYA , YAMAGUCHI TADAMASA
IPC分类号： B23K9/18 , B23K35/30 , B23K35/362
摘要： PURPOSE:To obtain high notch toughness of weld metal, high weldability, good bead appearance and high hydrogen embrittlement resistance of weld metal in the case of high heat input. CONSTITUTION:A bond flux having a composition containing, by weight, 5-20% total SiO2, 15-35% MgO, 7-14% CaCO3, 2-10% CaF2, 4-9% Al2O3, 3-10% TiO2, 0.7-2% B2O3, 15-35% iron powder, 0.5-3.0% Ti powder, further Mn powder is used for the welding flux. A steel wire having a composition containing, by weight,

6. 发明专利

JPS6213535A MANUFACTURE OF HIGH TENSION STEEL PLATE 失效
公开(公告)号：JPS6213535A
公开(公告)日：1987-01-22
申请号：JP15233885
申请日：1985-07-12
申请人： KAWASAKI STEEL CO
发明人： IMANAKA MAKOTO , AYAMA YOSHIYA , SHIGA CHIAKI
IPC分类号： C22C38/00 , C21D9/52 , C22C38/54
摘要： PURPOSE:To improve the quality of a high tension steel plate by reducing the amount of Si in a steel and making the quenching temp. of the resulting steel lower than that of the steel having the ordinary Si content to make the toughness uniform in the thickness direction. CONSTITUTION:The composition of a steel is composed of, by weight, 0.06-0.14% C, 0.01-0.15% Si, 0.7-1.3% Mn, 0.5-4% Ni, 0.3-0.7% Cr, 0.3-0.7% Mo, 0.01-0.1% V,

7. 发明专利

JPS5576044A 60KG*MM2 CLASS HIGH TENSILE STEEL FOR WELDED STRUCTURE HAVING SUPERIOR SULFIDE STRESS CORROSION CRACKING RESISTANCE 失效
公开(公告)号：JPS5576044A
公开(公告)日：1980-06-07
申请号：JP14942778
申请日：1978-12-01
申请人： KAWASAKI STEEL CO
发明人： OOHASHI NOBUO , SUZUKI SHIGEHARU , KOSHIZUKA NORIAKI , AYAMA YOSHIYA , NISHIYAMA NOBORU , MOTODA KUNIAKI , WATANABE SHIYUUJI
IPC分类号： C22C38/00 , C22C38/12 , C22C38/14
摘要： PURPOSE:To improve the sulfide stress corrosion cracking resistance of a refined low alloy high tensile steel by restricting the contents of C, Si, Mn, Mo, V, Al, N and B in the steel. CONSTITUTION:The compsn. of a refined low alloy high tensile steel having a tensile strength of 60kg/mm or more is adjusted as follows: by wt., C 0.04-0.12%, Si 0.10-0.50%, Mn 0.09-1.70%, Mo 0.06-0.50%, V 0.01-0.10%, Al 0.01- 0.10%, N

8. 发明专利

JPS63140034A PRODUCTION OF LOW YIELD RATIO HIGH TENSILE STEEL HAVING EXCELLENT LOW-TEMPERATURE TOUGHNESS 失效
公开(公告)号：JPS63140034A
公开(公告)日：1988-06-11
申请号：JP28823286
申请日：1986-12-03
申请人： KAWASAKI STEEL CO
发明人： AYAMA YOSHIYA , UEDA SHUZO
IPC分类号： C21D8/02 , C21D9/46 , C22C38/00 , C22C38/12
摘要： PURPOSE:To obtain a low yield ratio high tensile steel having an excellent low-temp. toughness by heating a steel having a specific compsn. to a specific temp. and rolling the same in an austenite region, then subjecting the rolled steel to controlled cooling down to a specific temp. range and cooling the steel down to an ordinary temp. after holding at a constant temp. thereby executing straight hardening. CONSTITUTION:The steel contg., by weight %, 0.05-0.15% C, 0.05-0.35% Si, 1.0-1.5% Mn, 0.005-0.07% Nb, =30% draft in the austenite region. The steel is then cooled down to a 250-400 deg.C range at >=5 deg.C/sec cooling rate and is held at said temp. for >=10min. The steel is thereafter cooled with air or water down to an ordinary temp. The steel products which have sufficient strength, a low yield ratio and good low-temp. toughness and are adequate as structural members for buildings, etc., are produced by this method.

9. 发明专利

JPS57188655A SUPERHIGH TENSILE STEEL WITH SUPERIOR TOUGHNESS AT LOW TEMPERATURE 失效
公开(公告)号：JPS57188655A
公开(公告)日：1982-11-19
申请号：JP7398281
申请日：1981-05-16
申请人： KAWASAKI STEEL CO
发明人： WATANABE SHIYUUJI , SUZUKI SHIGEHARU , AYAMA YOSHIYA , KAMATA AKIO
IPC分类号： C22C38/00 , C22C38/46
摘要： PURPOSE:To obtain a superhigh tensile steel having high yield stress, high tensile strength and superior toughness at low temp. and capable of being tempered at high temp. by adding specified amounts of C, Ni, Cr, Mo and V and restricting the contents of Cu, Si, Mn and Al. CONSTITUTION:This superhigh tensile steel consists of, by weight, 0.07-0.25% C, 9.6-13% Ni, 0.1-2.4% Cr, 0.1-5% Mo, =110kg.f/mm. yield stress, >=120kg.f/mm. tensile strength and >=10kg.m2mm.V notch absorption energy at -70 deg.C even after tempering at high temp. It is manufactured at a relatively low cost without requiring a special apparatus.

10. 发明专利

JPS5713151A SUPERHIGH-TENSILE STEEL WITH SUPERIOR TOUGHNESS AT LOW TEMPERATURE 失效
公开(公告)号：JPS5713151A
公开(公告)日：1982-01-23
申请号：JP8485680
申请日：1980-06-23
申请人： KAWASAKI STEEL CO
发明人： WATANABE SHIYUUJI , SUZUKI SHIGEHARU , AYAMA YOSHIYA , KAMATA AKIO , OOHASHI NOBUO
IPC分类号： C22C38/00 , C22C38/44
摘要： PURPOSE:To enhance the yield stress, tensile strength and toughness at low temp. by adding a prescribed amount of C, Ni, Cr, Mo, Cu, etc. while allowing C, Ni, Cr, Mo and Cu to satisfy a specified relative equation. CONSTITUTION:This superhigh-tensile steel consists of, by wt., 0.07-0.25% C, 7-13% Ni, 0.1-24% Cr, 0.1-5% Mo, =110kg. f/mm. yield stress, >=120kg.f/mm. tensile strength and >=10kg.m energy absorbing 2mm.V notch at -80 deg.C, and the fracture transition temp. is below the temp. of liq. nitrogen.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式