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1. 发明专利

DE69131792D1 未知
公开(公告)号：DE69131792D1
公开(公告)日：1999-12-30
申请号：DE69131792
申请日：1991-08-08
申请人： NIPPON STEEL CORP , KAWASAKI HEAVY IND LTD
发明人： OHGURO HARUO , KOSUGE TOSHIHIRO , KAWAMOTO KATSUHIKO , HANZAWA RYUUZOU , MATSUMURA SHOGO , KAWAI HIROYUKI , NAKASHIMA HIROYUKI , MORIMOTO YUKIO , AO YOUJI , FUJII TSUTOMU , KANEKO HIDEO , KUMASHIRO HATSUYOSHI
IPC分类号： B22D11/04 , B22D11/045 , B22D11/047
摘要： A continuous casting method comprises continuously supplying molten metal from a tundish to a cooled mold having an inlet and an outlet at least through a break ring, forming a cast section by continuously cooling the molten metal in the mold and starting the solidification of the molten metal below its surface, and intermittently withdrawing the cast section with respect to the mold through its outlet. During continuous casting, a sealing gas having a pressure higher than atmospheric and being soluble in the molten metal is invariable supplied to the entirety of the contact area of the mold and the break ring.

2. 发明专利

JPH0623488A MOLD FOR HORIZONTAL CONTINUOUS CASTING EQUIPMENT 失效
公开(公告)号：JPH0623488A
公开(公告)日：1994-02-01
申请号：JP10993392
申请日：1992-04-28
申请人： KAWASAKI HEAVY IND LTD , NIPPON STEEL CORP
发明人： KANEKO HIDEO , KAMISHIRO HATSUYOSHI , SATO MASARU , YANAI TAKASHI , MATSUMURA SHOGO , KAWAI HIROYUKI
IPC分类号： B22D11/04 , B22D11/059
摘要： PURPOSE:To provide a mold for horizontal continuous casting equipment having excellent durability without erosive accident by using a material having excellent characteristic of heat resistance, high temp. strength, high temp. hardness, etc., and adopting a structure having excellent heat conductivity, at the part ordinarily having large wearing in the mold. CONSTITUTION:In the mold for horizontal continuous casting equipment closely connecting a tundish 1 with the mold 19 through a feed nozzle 3 and a brake ring 4, the wear plate forming so as to become longer than drawing stroke of a cast billet is formed with a beryllium-copper alloy and is shrinkage-fitted to the inner surface of end part of the mold contacting with the brake ring.

3. 发明专利

JPH04238659A CONTINUOUS CASTING METHOD WITH SOLIDIFICATION BELOW MOLTEN METAL SURFACE 失效
公开(公告)号：JPH04238659A
公开(公告)日：1992-08-26
申请号：JP1256091
申请日：1991-01-11
申请人： NIPPON STEEL CORP , KAWASAKI HEAVY IND LTD
发明人： KOSUGE TOSHIHIRO , MATSUMURA SHOGO , KAWAI HIROYUKI
IPC分类号： B22D11/04 , B22D11/10
摘要： PURPOSE:To prevent the development of blow-hole and to obtain a cast slab having high quality by supplying a soluble gas into a molten metal cast into a gap part at the outside of a brake ring, in casting. CONSTITUTION:By supplying the soluble gas into the gap part 6 at the outside of brake ring 2, even the soluble gas in the gap part 6 invades into the molten metal 8 at the neighboring part 5 of tripple point through the gap between the brake ring 2 and the mold 1, as the soluble gas is easily solved into the molten metal 8, casting defect of blow-hole, etc., in the cast slab is not developed.

4. 发明专利

DE69131792T2 未知
公开(公告)号：DE69131792T2
公开(公告)日：2000-05-31
申请号：DE69131792
申请日：1991-08-08
申请人： KAWASAKI HEAVY IND LTD
发明人： OHGURO HARUO , KOSUGE TOSHIHIRO , KAWAMOTO KATSUHIKO , HANZAWA RYUUZOU , MATSUMURA SHOGO , KAWAI HIROYUKI , NAKASHIMA HIROYUKI , MORIMOTO YUKIO , AO YOUJI , FUJII TSUTOMU , KANEKO HIDEO , KUMASHIRO HATSUYOSHI
IPC分类号： B22D11/04 , B22D11/045 , B22D11/047
摘要： A continuous casting method comprises continuously supplying molten metal from a tundish to a cooled mold having an inlet and an outlet at least through a break ring, forming a cast section by continuously cooling the molten metal in the mold and starting the solidification of the molten metal below its surface, and intermittently withdrawing the cast section with respect to the mold through its outlet. During continuous casting, a sealing gas having a pressure higher than atmospheric and being soluble in the molten metal is invariable supplied to the entirety of the contact area of the mold and the break ring.

5. 发明专利

ES2141084T3 未知
公开(公告)号：ES2141084T3
公开(公告)日：2000-03-16
申请号：ES91113309
申请日：1991-08-08
申请人： KAWASAKI HEAVY IND LTD
发明人： OHGURO HARUO , KOSUGE TOSHIHIRO , KAWAMOTO KATSUHIKO , HANZAWA RYUUZOU , MATSUMURA SHOGO , KAWAI HIROYUKI
IPC分类号： B22D11/04 , B22D11/045 , B22D11/047
摘要： A continuous casting method comprises continuously supplying molten metal from a tundish to a cooled mold having an inlet and an outlet at least through a break ring, forming a cast section by continuously cooling the molten metal in the mold and starting the solidification of the molten metal below its surface, and intermittently withdrawing the cast section with respect to the mold through its outlet. During continuous casting, a sealing gas having a pressure higher than atmospheric and being soluble in the molten metal is invariable supplied to the entirety of the contact area of the mold and the break ring.

6. 发明专利

JPH09310113A REFINING METHOD FOR HIGHLY CLEAN STAINLESS STEEL 失效
公开(公告)号：JPH09310113A
公开(公告)日：1997-12-02
申请号：JP14855096
申请日：1996-05-21
申请人： NIPPON STEEL CORP
发明人： NAKAO RYUJI , MIYAZAKI MASAFUMI , TAKANO HIRONORI , IWASAKI HIROSHI , KAWAI HIROYUKI , MATSUNAMI TADANORI
IPC分类号： C21C7/00 , C21C7/04 , C21C7/06 , C21C7/072
摘要： PROBLEM TO BE SOLVED: To make inclusions innoxious by inhibiting the formation of hard, high m.p. inclusions and improving the ductility of inclusions at the time of hot working, in a stainless steel refining method. SOLUTION: At the time of refining stainless steel, Al is used as a reducing agent for the slag containing chromium oxide formed at oxidizing refining, and Ca or Ca alloy or both of them are added to molten steel in a ladle after tapping. At this time, the additive quantity of Ca, as pure Ca content, is regulated to >=50g per ton of molten steel, and, after Ca addition, inert gas to the amount satisfying inequality Qd >=Wca /4.2 is blown into the molten steel to perform agitation of the molten steel. In the inequality, Qd represents the flow rate (Nm ) of the blown inert gas and Wca represents the sum (kg) of pure Ca content in the added Ca or Ca alloy.

7. 发明专利

JPH0941021A METHOD FOR CONTINUOUSLY CASTING CHROMIUM-CONTAINING STEEL 失效
公开(公告)号：JPH0941021A
公开(公告)日：1997-02-10
申请号：JP21650795
申请日：1995-08-03
申请人： NIPPON STEEL CORP
发明人： FUKUMOTO SHIGEO , HATA KOKI , KAWAI HIROYUKI
IPC分类号： C21C7/00 , C21C7/06
摘要： PROBLEM TO BE SOLVED: To prevent the clogging of an immersion nozzle, to attain multiple continuous casting and to stably produce a slab of good quality in continuous casting for a chromium-contg. steel such as a stainless steel and a heat resistant steel. SOLUTION: In a method for casting the molten steel of a chromium-contg. steel contg. >=7% chromium, deoxidation by an alloy essentially consisting of Si is executed in a refining stage to regulate the [Al] concn. (wt.%) in the molten steel after the completion of the refining stage to =0, and thereafter, casting is executed.

8. 发明专利

JPH08281381A MOLD FOR HORIZONTAL CONTINUOUS CASTING 失效
公开(公告)号：JPH08281381A
公开(公告)日：1996-10-29
申请号：JP8159695
申请日：1995-04-06
申请人： NIPPON STEEL CORP
发明人： TANNO HITOSHI , ICHIYAMA YASUTOMO , OGAWA TAKESHI , KAWAI HIROYUKI , ASO TOSHIRO
IPC分类号： B22D11/04 , B22D11/059
摘要： PURPOSE: To prevent hoot tear and clod shut crack at the defects of a steel by forming a specific metal-base thermal-sprayed film from the starting pt. of solidified shell developed on an inner surface at the end part of a copper alloy-made cylindrical mold contacting with molten steel approaching to a brake ring to the other end side of the mold. CONSTITUTION: The copper alloy-made cylindrical mold 7 forms the metal-base thermal-sprayed film 9 of 0.1-10.0mm thickness excellent in heat shock resistance, zinc resistance and wear resistance on the inner surface at the end part of the brake ring side. This metal-base film 9 is formed so as to satisfy the relationship I to the position from the starting position fo solidified shell developed on the inner surface at the end part of the mold 7 to the other end side of the mold 7. Wherein, (d) is the film thickness at 0.1-10.0mm, K is thermal conductivity (kcal/m.hr. deg.C) and L is the film length (mm) from the starting pt. of solidification. Further, as the metal-base thermal sprayed film 9, Co-base alloy, etc., is suitable and inn order to secure the sticking force of the copper alloy forming the mold with these alloy, it is effective to interpose an Ni-plating film.

9. 发明专利

JPH0881714A APPARATUS FOR TREATING SURFACE OF CAST SLAB 失效
公开(公告)号：JPH0881714A
公开(公告)日：1996-03-26
申请号：JP24343494
申请日：1994-09-13
申请人： NIPPON STEEL CORP
发明人： FUKUDA YOSHIMORI , KAWAI HIROYUKI , OKIMORI MAYUMI
IPC分类号： B22D11/12 , C21D1/70
摘要： PURPOSE: To form a rust protection film on the surface of a cast slab by dipping to prevent the continuous cast slab from developing the rust according to the deposit at out-door, etc. CONSTITUTION: A draining and drying treatment device 3 is arranged at the side part of a vessel 2 filling aqueous solution 1 containing rust protecting agent, and a shield wall 9 is arranged at the opposite side to the draining and drying treatment device 3 of the vessel 2. The cast slab S is dipped into the aqueous solution 1 in the vessel 2 with a tongue 12, and after pulling up, blasting from the draining and drying treatment device 3 toward the cast slab S is executed to remove and dry the excess aqueous solution attached to the cast slab S and the rust-protection film having a desired thickness is formed on the surface of the cast slab S.

10. 发明专利

JPH07266001A MOLD FOR HORIZONTAL CONTINUOUS CASTING 失效
公开(公告)号：JPH07266001A
公开(公告)日：1995-10-17
申请号：JP6252394
申请日：1994-03-31
申请人： NIPPON STEEL CORP
发明人： ASO TOSHIRO , TANNO HITOSHI , ICHIYAMA YASUTOMO , OGAWA TAKESHI , KAWAI HIROYUKI
IPC分类号： B22D11/04 , B22D11/059
摘要： PURPOSE:To provide a mold for stably obtaining a cast billet having good quality by preventing cold shut crack developed accompanied with the intermittent drawing-out of a horizontal continuous casting. CONSTITUTION:A film 15 composed of heat resistant alloy having low thermal conductivity is formed at 50mum-1mm thickness on the inner surface of the mold 11. The film forming range is made to be >=2 times of thickness at the reverse drawing-out side and >=2 times of thickness at the drawing-out side from a triple point and in the range of the drawing-out stroke or lower of one cycle. The thermal conductivity of the film 15 is desirable to be

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