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

JPS6310052A CONTINUOUS CASTING METHOD FOR MOLTEN ALUMINUM-CONTAINING STEEL 失效
公开(公告)号：JPS6310052A
公开(公告)日：1988-01-16
申请号：JP15358086
申请日：1986-06-30
申请人： NISSHIN STEEL CO LTD
发明人： TAKIMOTO NORIAKI , SHIGEMATSU NAOKI
IPC分类号： B22D11/00 , B22D11/10 , B22D11/108 , B22D11/111
摘要： PURPOSE:To prevent the precipitation of gehlenite during casting by using powder satisfying the specific three conditions at the time of casting continuously molten Al-containing steel. CONSTITUTION:By using the powder for forming artifical slag containing CaO and SiO2 as main compositions, the molten steel containing 0.10wt% Al continuously cast. In this case, the powder adjusted as satisfying the next three conditions, that is, 0.6-0.8 basicity (CaO/SiO2), 800-1,000 deg.C melting point,

2. 发明专利

JPS6024248A METHOD AND DEVICE FOR CONTINUOUS CASTING OF THIN BILLET 失效
公开(公告)号：JPS6024248A
公开(公告)日：1985-02-06
申请号：JP13256483
申请日：1983-07-20
申请人： NISSHIN STEEL CO LTD
发明人： MURANAKA YUTAKA , HOSHI NORIO , TAKIMOTO NORIAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent generation of uneven billet thickness, lamination and rippled surface with a casting mold formed of stationary walls and moving mold surfaces by coating lubricants having high and low viscosities to the prescribed parts on the moving mold surfaces. CONSTITUTION:Stationary walls 2a, 2b are disposed to face each other on moving mold surfaces 1a, 1b and the space corresponding to the width of a thin billet 3 is provided therebetween. Said surfaces 1a, 1b are formed of a pair of casting rolls or casting belts and are disposed to face each other apart at the space corresponding to the thickness of the billet 3. A lubricant having a high viscosity is coated to the parts of the surfaces 1a, 1b facing the walls 2a, 2b and a lubricant having a low viscosity on the parts facing the molten metal between the walls 2a and 2b. The molten metal is supplied into the continuous casting mold formed of said surfaces 1a, 1b and the walls 2a, 2b to obtain billet 3. The cooling rate in the width direction of the billet 3 is thus made uniform and the generation of uneven billet thickness, lamination and rippled surface is prevented.

3. 发明专利

JPS6092054A METHOD AND DEVICE FOR PREVENTING SLAG INCLUSION IN TUNDISH FOR CONTINUOUS CASTING 失效
公开(公告)号：JPS6092054A
公开(公告)日：1985-05-23
申请号：JP20182283
申请日：1983-10-26
申请人： NISSHIN STEEL CO LTD
发明人： NAKADA CHIYUUMA , TAKIMOTO NORIAKI , OKADA MASAYUKI , HOSHI NORIO
IPC分类号： B22D11/10 , B22D11/11 , B22D11/112 , B22D11/116 , B22D11/117 , B22D11/118 , B22D43/00
摘要： PURPOSE:To separate non-metallic inclusions and to prevent intrusion thereof into a casting billet by disposing successively a lower gate and upper gate in a tundish from the side nearer the long nozzle of a ladle to segment the tundish inside to a receiving bath region and a tapping bath region and floating a floating plate in the tapping bath region. CONSTITUTION:The axial line of a long nozzle 5 mounted in a receiving bath region 15 is designated as a reference line M, M and the distance from the line M, M up to the axial line N, N of an immersion nozzle 8 fixed to a tapping bath region 16 is designated as X. When the height from the inside bottom of the tundish up to the steel bath surface is designed as H and the transverse width at the lower limit level H2 of the steel bath is designated as W, a lower gate 1 having 0.67-0.75H height is disposed in the position 0.1833X from the line M, M and an upper gate 2 is disposed in the position 0.2749X from the line M, M at 0.1333-0.25H the gap G from the inside bottom of the tundish. A floating plate 3 having 0.181-0.554W.X area is floated on the steel bath on the axial line of the immersion nozzle. The unit of the above-described length is metric.

4. 发明专利

JPS6024249A CONTINUOUS CASTING METHOD OF THIN BILLET 失效
公开(公告)号：JPS6024249A
公开(公告)日：1985-02-06
申请号：JP13256583
申请日：1983-07-20
申请人： NISSHIN STEEL CO LTD
发明人： MURANAKA YUTAKA , HOSHI NORIO , TAKIMOTO NORIAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent generation of uneven billet thickness, lamination and surface defect by pressing solid coating materials to the moving mold surfaces which are disposed to face each other apart at the space corresponding to the thickness of the billet. CONSTITUTION:Moving mold surfaces 1a, 1b formed of a pair of casting rolls or casting belts are disposed to face each other apart at the space corresponding to the thickness of a thin billet 3. Coating materials 5a, 5b molded to a solid shape are brought into contact with such surfaces 1a, 1b under prescribed pressure. The film having the uniform width of the billet 3 is then continuously formed on the surfaces 1a, 1b and is moved to the parts in contact with the molten metal. The molten metal is continuously supplied to the above-described surfaces 1a, 1b. The generation of uneven billet thickness, lamination and surface defect owing to a difference in cooling rate is prevented by the above-mentioned method.

5. 发明专利

JPS6021155A METHOD AND DEVICE FOR CONTINUOUS CASTING OF BROAD AND THIN PLATE 失效
公开(公告)号：JPS6021155A
公开(公告)日：1985-02-02
申请号：JP12759383
申请日：1983-07-15
申请人： NISSHIN STEEL CO LTD
发明人： MURANAKA YUTAKA , MARUHASHI SHIGEAKI , HOSHI NORIO , TAKIMOTO NORIAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To improve the cleanliness on the surface and inside of a product by transmitting the heat of a molten metal before flowing toward the space between stationary walls to the rear surface of said stationary walls to prevent overcooling of the stationary walls and covering the top surface of the molten in the casting mold with an artificial slag layer. CONSTITUTION:A broad and thin billet 5 is continuously cast by a surface moving mold formed of a pair of casting rolls 1b which are disposed to face each other apart at the space corresponding to the thickness of the billet and a pair of stationary walls 2a, b which are disposed to face each other above the surface moving mold apart at the space corresponding to the width of the billet 5 within the width of said mold. A vessel 3 for holding a molten metal sized to contain the walls 2a, b therein is provided to transmit the heat of the molten metal from the rear surface of the walls 2a, b before the molten metal from a pouring nozzle 4 flows into the space between the walls 2a and b, thereby preventing overcooling. The surface of the molten metal in the vessel 3 is further covered with an artificial slag layer 9.

6. 发明专利

JPH0335017B2 失效
公开(公告)号：JPH0335017B2
公开(公告)日：1991-05-24
申请号：JP13256483
申请日：1983-07-20
申请人： NISSHIN STEEL CO LTD
发明人： MURANAKA YUTAKA , HOSHI NORIO , TAKIMOTO NORIAKI
IPC分类号： B22D11/06

7. 发明专利

JPH0332420B2 失效
公开(公告)号：JPH0332420B2
公开(公告)日：1991-05-13
申请号：JP13256583
申请日：1983-07-20
申请人： NISSHIN STEEL CO LTD
发明人： MURANAKA YUTAKA , HOSHI NORIO , TAKIMOTO NORIAKI
IPC分类号： B22D11/06

8. 发明专利

JPS6363558A CONTINUOUS CASTING METHOD FOR STAINLESS STEEL CONTAINING TITANIUM 失效
公开(公告)号：JPS6363558A
公开(公告)日：1988-03-19
申请号：JP20776786
申请日：1986-09-05
申请人： NISSHIN STEEL CO LTD
发明人： TAKIMOTO NORIAKI
IPC分类号： B22D11/00 , B22D11/10 , B22D11/108 , B22D11/11 , B22D11/112 , B22D11/116 , B22D11/117
摘要： PURPOSE:To reduce the clogging in a nozzle and to efficiently obtain a cast billet having good quality under good yield by adding Ca alloy or Ca compound into molten steel in a refining furnace and adjusting the composition, so as to contain the specific rate of Ca composition in the molten steel or more. CONSTITUTION:In the molten stainless steel 2 containing Ti composition, at the time of supplying gas through a gas supplying tube 9a and a porous plug 9, the bubble 11 is developed in the molten steel 2, to run away to the surface, while stirring the molten steel 2. Then, in the surface of molten steel 2, its surface becomes to the exposed condition by pushing through the slag 10, to form the Ca alloy adding place 12. In this adding place 12, the Ca alloy or Ca compound is added, so as to contain >=0.0015wt% as Ca composition. In this way, the clogging of nozzle is effectively restrained.

9. 发明专利

JPS6021156A CONTINUOUS CASTING DEVICE FOR BROAD AND THIN PLATE 失效
公开(公告)号：JPS6021156A
公开(公告)日：1985-02-02
申请号：JP12759483
申请日：1983-07-15
申请人： NISSHIN STEEL CO LTD
发明人： MURANAKA YUTAKA , MARUHASHI SHIGEAKI , HOSHI NORIO , TAKIMOTO NORIAKI
IPC分类号： B22D11/06
摘要： PURPOSE:To obtain a thin billet which has a uniform thickness and is free from lamination by forming a pouring nozzle which conducts a molten metal to surface moving molds and a vessel for a molten metal having stationary walls for regulating the width of a billet into the construction in which a part of the molten metal is discharged toward the stationary walls. CONSTITUTION:A molten metal is poured from an upper tundish 4 by a pouring nozzle 5 into a vessel 3 for a molten metal having stationary walls 2a, 2b for regulating the width of the billet within the width of surface moving molds 1a, 1b which are, for example, a pair of casting rolls. The top end of such nozzle 5 is connected to the rectangular aperture of the tundish 4 and the bottom end thereof is immersed in the molten metal in the vessel 3. The nozzle has a rectangular parallelepiped shape over the entire part and the inside thereof is divided to upper and lower passages 8, 9 by an intermediate chamber 7. The passages 8 are segmented by partition walls 10 which are parallel with each other to constitute passages for regulating flow. Sloped passages 11 are provided in the passages 9 so that a part of the molten metal flowing down in said passages is discharged toward the walls 2a, 2b. The molten metal which is regulated of flow by such passages is thus distributed uniformly in the transverse direction of the thin billet.

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