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1. 发明专利

JPS5947356A Steel material having 50kg/mm2 tensile strength and superior resistance to cracking of galvanized surface 失效
标题翻译：具有50KG / MM2拉伸强度和耐腐蚀性的钢材具有抗压缩表面
公开(公告)号：JPS5947356A
公开(公告)日：1984-03-17
申请号：JP15803282
申请日：1982-09-13
申请人： Nippon Kokan Kk
发明人： HIRABAYASHI KIYOTERU , AKAO KAZUTAKA , TAIRA TADAAKI , ICHINOSE HIROYUKI
IPC分类号： C22C38/00 , C22C38/14
摘要： PURPOSE: To prevent the cracking of a structural steel material due to hot- dipping at its weld heat-affected zone when the steel material is galvanized after welding so as to prevent corrosion, by adding a specified element to the steel material.
CONSTITUTION: A structural steel material having ≥50kg/mm
2 tensile strength and a composition consisting of
摘要翻译：目的：通过在钢材中加入规定的元素，防止钢材在焊接后受热影响而导致结构钢材料的开裂，钢材在焊接后进行镀锌处理，以防止腐蚀。构成：具有> = 50kg / mm 2的拉伸强度的结构钢材料和由<0.05％C，<0.3％Si，1.0-2.0％Mn，<0.03％Ti和余量Fe组成的组合物被焊接，镀锌以提高耐腐蚀性。此时，焊接热影响区域由于熔融Zn的脆化而导致晶界开裂，也就是液态。金属。为了防止裂纹，通过在0.02-0.10％的Nb和/或V，<= 1％的Cu，Ni和Mo中的至少一种中添加至少一种，将钢材的Pcm值调节至<= 0.15％，并且添加0.0005 -0.0020％B，或进一步加入0.04〜0.08％的溶胶。 Al和<0.0040％N。由于在其焊接热影响区域的热浸渍引起的耐开裂性得到改善。

2. 发明专利

JPS57127504A Rolling method of ultrathick steel plate 失效
标题翻译： ULTRATHICK钢板的轧制方法
公开(公告)号：JPS57127504A
公开(公告)日：1982-08-07
申请号：JP1277781
申请日：1981-01-30
申请人： Nippon Kokan Kk
发明人： HIRASAWA TAKESHI , SHIYOUDA SADAKAZU , ICHINOSE HIROYUKI , TAGAWA HISATOSHI , TANAKA AKIHIRO , HIRABE KENJI , IWASAKI NORIHIRO , MATSUMOTO SHIGEYASU
IPC分类号： B21B1/02 , B21B1/38 , B21B1/36
CPC分类号： B21B1/026
摘要： PURPOSE:To produce a sound ultrathick steel plate in good yields by rotating a material to be rolled which is rolled to a sectional shape having projecting parts in the rolling direction by changing of the pass or biting back during rolling horizontally 90 deg. and rolling the same smoothly. CONSTITUTION:Only the one end part in the width direction of a material 6' to be rolled of width W1 is rolled in the width direction with flat rolls 5''. Next, the other end part in the width direction is rolled with rolls 5''. Thereby, the material 6'' with width W2 and a projecting shape in section is obtained. This is rotated 90 deg. in the horizontal plane, and is rolled in the longitudinal direction with the rolls 5'', whereby the product 6''' with width W3 is produced. In this way, high rolling stresses (compressive stresses) are generated in the central part of the material 6'' and the press-fixing of defective parts having center porosities is accelerated, whereby the internal quality is made sounder.
摘要翻译：目的：通过在滚动水平方向90度旋转被轧制的材料，通过在滚动方向上滚动到具有突出部分的截面形状，通过改变通过或咬合而使良好的产量生产出良好的超薄钢板。并顺利滚动。构成：只有宽度W1的轧制材料6'的宽度方向上的一端部在宽度方向上用平坦辊5“轧制。接下来，宽度方向的另一端部用辊5“滚动。由此，获得具有宽度W2并且具有突出形状的截面的材料6“。旋转90度。在水平面上，并且在辊5“的纵向上滚动，由此产生具有宽度W3的产品6”'。以这种方式，在材料6“的中心部分产生高的轧制应力（压缩应力），加速了具有中心孔隙率的缺陷部件的压力固定，从而使内部质量更好。

3. 发明专利

JPS57101617A MANUFACTURE OF 9%NI STEEL PIPE 失效
公开(公告)号：JPS57101617A
公开(公告)日：1982-06-24
申请号：JP17811680
申请日：1980-12-18
申请人： NIPPON KOKAN KK
发明人： TAIRA TADAAKI , HIRABAYASHI KIYOTERU , ICHINOSE HIROYUKI , WATANABE TADASHI , YAMADA MAKOTO
IPC分类号： B23K9/23 , B23K9/025 , B23K31/00 , C21D9/08 , C21D9/50 , C22C38/00
摘要： PURPOSE:To manufacture excellent shape of tough 9%Ni steel pipes by a method in which a hot-rolled 9%Ni steel plate is tempered and molded into tubular form by UO method, the seaming portions of the tubes thus molded are welded with an eutectic alloy welding wire, and the welded tubes are expanded to a given size and the heat-treated. CONSTITUTION:A hot-rolled 9%Ni steel plate is tempered to sufficiently soften it, and then molded into a tubular form by UO method. Then, the seaming portions of the tubes thus molded are welded by a submerged arc or MIG method using a so-called eutectic alloy welding wire having a compositon similar to that of mother material. And, the tubes are expanded to a given size and then subjected to continuous hardening-tempering treatments to obtain a 9%Ni pipe. Thus, since a 9%Ni steel pipe is formed by UO method after tempering treatment, a steel pipe which has excellent shape and is free of the lowering of toughness in its portion to be affected by heat can be obtained.

4. 发明专利

JPS5797802A METHOD FOR CONTROLLING SHAPE OF THICK PLATE 失效
公开(公告)号：JPS5797802A
公开(公告)日：1982-06-17
申请号：JP17318480
申请日：1980-12-10
申请人： NIPPON KOKAN KK
发明人： SHIYOUDA SADAKAZU , HIRASAWA TAKESHI , ICHINOSE HIROYUKI
IPC分类号： B21B37/28 , B21B1/38 , B21B37/00
摘要： PURPOSE:To make the shape of a trailing end symmetrical and rectangular and to minimize crops by incorporating reverse rolling of two passes in specific screw-down positions for finish rolling after 90 deg. rotation of a blank material which is controlled of the sectional shape in the longitudinal direction in broadside rolling. CONSTITUTION:An intermediate rolled blank material 2' formed with thick walled parts D in the trailing end part is formed by changing the pass during broadside rolling. If this is rolled on one pass in the arrow direction, the surface shape of a thick plate 3 is assymetrical in the leading end part 3a and the trailing end part 3b. Thereupon, an approximately half area S1 out of the total sectional area S in the parts D is rolled on the side going toward the screw- down position A from the front side in the rolling of the 1st pass in finish rolling. Next, in the rolling of the 2nd pass, a sectional area S2(=S-S1) is rolled in the direction opposite from that in the 1st pass up to the screw-down position B.

5. 发明专利

JPS5735636A Production of high tensile steel pipe 失效
标题翻译：生产高压钢管
公开(公告)号：JPS5735636A
公开(公告)日：1982-02-26
申请号：JP11101080
申请日：1980-08-14
申请人： Nippon Kokan Kk
发明人： HIRABAYASHI KIYOTERU , TAIRA TADAAKI , ICHINOSE HIROYUKI
IPC分类号： B23K9/23 , B23K35/30 , C21D9/08 , C21D9/50
CPC分类号： C21D9/50
摘要： PURPOSE:To improve strength, low-temp. toughness and solidification cracking resistance by using wires of specific components and combining these with heat treatment conditions in producing a high tensile steel pipe by an UOE process. CONSTITUTION:A high tensile steel pipe is produced by an UOE process from a high tensile steel plate of approximately 70-100kg/mm. in tensile strength. At this time, MIG welding is carried out by using wires contg. components of
摘要翻译：目的：提高强度，低温。通过使用特定部件的丝并且通过UOE工艺将它们与热处理条件组合以制造高强度钢管而进行韧性和固化抗裂性。构成：高强度钢管通过UOE工艺从约70-100kg / mm 2的高拉伸钢板制造，拉伸强度。此时，通过使用导线来进行MIG焊接。组分为<= 0.13％C，0.1-0.7％Si，0.4-1.5％Mn，≤0.015％P，<= 0.015％S，1.0-7.0％Ni和0.15-2.0％Cr，之后，下一层通过SAW（埋弧焊）法焊接。然后，将所得钢管快速加热至900-1000℃，然后水硬化，随后将其回火至600-700℃。

6. 发明专利

JPS5588996A FUSED FLUX FOR SUBMERGED ARC WELDING AND PRODUCTION THEREOF 失效
公开(公告)号：JPS5588996A
公开(公告)日：1980-07-05
申请号：JP16328978
申请日：1978-12-27
申请人： NIPPON KOKAN KK
发明人： TAIRA TADAAKI , AKAO KAZUTAKA , ICHINOSE HIROYUKI
IPC分类号： B23K35/362 , B23K35/36 , B23K35/40
摘要： PURPOSE:To enhance the welding operation and improve the bead shape, by adding a fused thickener of specified basicity range to a fused foundation flux. CONSTITUTION:Weld slag of fused welding flux produced by submerged arc welding is, after removing dust, iron powder and other impurities therefrom, crushed and adjusted of grain size to prepare a fused foundation flux. Fused type condense thickener containing SiO2 by 40-65wt%, CaO 20-40%, TiO2 10-50%, and inevitable ingredients for the rest, of which basicity B shown in the formula is in the range of -4.0-0.5 is added to said flux by 2-20wt%. When welded by using this flux, the arc remains always stable, and normal beads are formed.

7. 发明专利

JPS5534667A MANUFACTURE OF HEAT TREATED STEEL PIPE WITH REDUCED RESIDUAL STRESS 失效
公开(公告)号：JPS5534667A
公开(公告)日：1980-03-11
申请号：JP10754978
申请日：1978-09-04
申请人： NIPPON KOKAN KK
发明人： TAIRA TADAAKI , ISHIHARA TOSHIROU , ICHINOSE HIROYUKI , HIRATA KENICHI
IPC分类号： C21D9/08
摘要： PURPOSE:To obtain a steel pipe with reduced residual stress in a short time by regulating the temp. difference between inside and outside of a heated steel pipe to + or -15 deg.C or below; forcing the inside to cool while holding this difference until the outside is cooled to 600 deg.C; and allowing the pipe to cool. CONSTITUTION:Large diameter steel pipe 1 leaving heating furnace 7 is passed through feed rollers 2 and stopped by stopper 4, and the inside of pipe 1 is cooled with cooling air sprayed from nozzle openings 11 of blower 5 through delivery outlet 8. At this time, the inside and outside temps. of pipe 1 are measured with thermometers, the results are fed back, and the inside is cooled while holding the temp. difference between inside and outside at + or -15 deg.C or below until the outside temp. becomes 600 deg.C. The outside may be heated with heating coils 12. When esp. low residual stress is required, the temp. difference is held until the outside temp. becomes 200 deg.C. Pipe 1 is then allowed to cool. Thus, a steel pipe with reduced residual stress is efficiently obtd. without requiring large furnace equipment and long-time treatment.

8. 发明专利

JPS6213083B2 失效
公开(公告)号：JPS6213083B2
公开(公告)日：1987-03-24
申请号：JP1277781
申请日：1981-01-30
申请人： NIPPON KOKAN KK
发明人： HIRASAWA TAKESHI , MASUDA SADAKAZU , ICHINOSE HIROYUKI , TAGAWA HISATOSHI , TANAKA AKIHIRO , HIRABE KENJI , IWASAKI NORIHIRO , MATSUMOTO SHIGEYASU
IPC分类号： B21B1/02 , B21B1/38

9. 发明专利

JPS6027730B2 失效
公开(公告)号：JPS6027730B2
公开(公告)日：1985-07-01
申请号：JP8848580
申请日：1980-07-01
申请人： NIPPON KOKAN KK
发明人： UEDA MASAHIRO , FUKUSHIGE NOBUO , ICHINOSE HIROYUKI , TANAKA MINORU
IPC分类号： C22C38/00 , C21D6/00 , C21D9/00 , H04N1/23

10. 发明专利

JPS595079B2 JPS595079B2 - 失效
公开(公告)号：JPS595079B2
公开(公告)日：1984-02-02
申请号：JP16328978
申请日：1978-12-27
申请人： Nippon Kokan Kk
发明人： TAIRA TADAAKI , AKAO KAZUTAKA , ICHINOSE HIROYUKI
IPC分类号： B23K35/362 , B23K35/36 , B23K35/40

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