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1. 发明专利

JPH04172151A CASTING STARTING METHOD IN HORIZONTAL CONTINUOUS CASTING 失效
公开(公告)号：JPH04172151A
公开(公告)日：1992-06-19
申请号：JP30191890
申请日：1990-11-07
申请人： YOSHIDA KOGYO KK
发明人： NAGAI YOSHITAKA , ARASE MAKOTO , OHATA NORIO
IPC分类号： B22D11/04 , B22D11/08
摘要： PURPOSE:To prevent bending downward of a tip part of an ingot by arranging a recessed part at the tip part of a starting block shielding a mold, fitting a starting pin at the base bottom part thereof and drawing out this together with the tip part of a solidified part. CONSTITUTION:Molten metal is introduced into the cooled mold 3 from a tundish 1 through an orifice plate 2 and filled up into the recessed part 6-1 of starting block 6. The molten metal is cooled and solidified to form the tip part of ingot 7 integrated with the starting pin 8. Successively, the starting block 6 is drawn out to start the casting. Since the recessed part 6-1 is formed at the rear end part of starting block 6 and the ingot is drawn out while surely supporting with the peripheral face thereof, the bending downward is not generated.

2. 发明专利

JPH02295642A HORIZONTALLY CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH02295642A
公开(公告)日：1990-12-06
申请号：JP11602389
申请日：1989-05-11
申请人： YOSHIDA KOGYO KK
发明人： NAGAI YOSHITAKA , ARASE MAKOTO , OHATA NORIO
IPC分类号： B22D11/04 , B22D11/045 , B22D11/07
摘要： PURPOSE:To stably produce a cast ingot, which is difficult to develop surface defect, by uniformly flowing out lubricating oil from small gap extending to horizontal direction between outer circumferential face at front side part of the orifice plate and inner circumferential face of a mold onto the whole circumferential face of the ingot. CONSTITUTION:Annular lubricating oil passage 5 is arranged at the part of the mold 3 in contact with the orifice plate 2. The lubricating oil flowing through radial grooves 6 from the above passage 5 arrives to the outer circumferential face at the front side part of the orifice plate 2 facing to the mold and the course is converted to advancing direction of the casting ingot 9. After spreading the lubricating oil in the gap 7 between the inner circumferential face of the mold 3 and the outer surface of the orifice plate 2 almost uniformly, this is allowed to flow out on the outer surface of the casting ingot 9. As the outer surface of the ingot 9 is lubricated almost uniformly, the casting ingot without any roughening and burning on the casting surface can be produced.

3. 发明专利

JPH02295641A CASTING METHOD IN HORIZONTALLY CONTINUOUS CASTING 失效
公开(公告)号：JPH02295641A
公开(公告)日：1990-12-06
申请号：JP11602289
申请日：1989-05-11
申请人： YOSHIDA KOGYO KK
发明人： NAGAI YOSHITAKA , ARASE MAKOTO , OHATA NORIO
IPC分类号： B22D11/04 , B22D11/08
摘要： PURPOSE:To smoothen casting by closing hermetically a recessed part arranged surrounding outlet of an orifice with a starting block, positioning the starting pin out of the outlet of the orifice and causing molten metal to flow into a mold. CONSTITUTION:The recessed part 8 surrounding the outlet of the orifice 7 at the mold 3 side of the orifice plate 2 arranged between molten metal discharging hole in a tundish 1 and the mold 3 is arranged, and by abutting the starting block 4 on the whole surface of the orifice plate 2, the recessed part is closed hermetically. After positioning the starting pin 5 at the position out of the orifice, the molten metal is allowed to flow in through the orifice 7 from the tundish 1 and successively, the starting block 4 is drawn out from the mold 3 together with the solidified molten metal. By this method, the casting can be stably and easily executed without developing any breakout.

4. 发明专利

JPH05318031A METHOD FOR COOLING IN CONTINUOUS CASTING, AND DEVICE AND MOLD THEREFOR 失效
公开(公告)号：JPH05318031A
公开(公告)日：1993-12-03
申请号：JP11868192
申请日：1992-05-12
申请人： YOSHIDA KOGYO KK
发明人： NAGAI YOSHITAKA , ARASE MAKOTO , OHATA NORIO
IPC分类号： B22D11/04 , B22D11/045 , B22D11/049 , B22D11/055 , B22D11/124
摘要： PURPOSE:To execute the suitable cooling to high speed casting and to stabilize the casting by injecting a primary cooling water to molten metal cooled with a cooling mold and a secondary cooling water to an initial stage range in generated transition boiling zone and film boiling zone. CONSTITUTION:The molten metal 3 in a tundish 1 is introduced into the cooling mold 2 through an orifice 6 and the surface is cooled to form the solidified shell. The primary cooling is executed by the first cooling water injected from a first injection hole 23 in the cooling mold 2 to progress the solidification. Toward the steam film in the transition boiling zone and the film boiling zone formed on the surface of a cast billet 4 by injecting the primary cooling water, the secondary cooling water is injected from a second injecting hole 24 in the cooling mold 2. The secondary injected cooling water breaks through the transition boiling zone and the film boiling zone, and nucleus boiling is generated, and the cast billet 4 surface is directly secondary-cooled to form the firm solidified shell.

5. 发明专利

JPH05177308A METHOD FOR CONTINUOUSLY CASTING AND EXTRUDING ALUMINUM OR ALUMINUM ALLOY 失效
公开(公告)号：JPH05177308A
公开(公告)日：1993-07-20
申请号：JP36037691
申请日：1991-12-30
申请人： YOSHIDA KOGYO KK
发明人： SATOMURA MITSUMICHI , NAGAI YOSHITAKA , ARASE MAKOTO , OHATA NORIO
IPC分类号： B21C23/00 , B22D11/00 , B22D11/04
摘要： PURPOSE:To continuously execute production from casting to extrusion with a high energy efficiency and a high productivity and embody the perfect continuity and automation from the casting to the extrusion. CONSTITUTION:A horizontal continuous casting method is adopted, and at the time of casting a cast billet, while executing cooling with a cooling mold, direct cooling with cooling water injected from the cooling mold and secondary cooling near the tip part of a sump, the casting is executed and the production of the case billet is executed so that the case billet is high temp., desirably 100-350 deg.C and this temp. condition is kept and after cutting to the long length, this billet is supplied into a heating furnace to execute homogenizing treatment. Thereafter, after cutting to short size, the extrusion is executed, Each process is connected with a conveying device made of a material having low heat conductivity and continuously executed while keeping the cast billet in the high temp. condition.

6. 发明专利

JPH0577011A COOLING METHOD IN CONTINUOUS CASTING AND MOLD 失效
公开(公告)号：JPH0577011A
公开(公告)日：1993-03-30
申请号：JP23950191
申请日：1991-09-19
申请人： YOSHIDA KOGYO KK
发明人： NAGAI YOSHITAKA , ARASE MAKOTO , OHATA NORIO
IPC分类号： B22D11/00 , B22D11/04 , B22D11/049 , B22D11/055 , B22D11/124
摘要： PURPOSE:To stably enable a high speed casting and to improve the productivity by ejecting primary cooling water to a molten steel cooled with a cooling mold, applying the primary cooling and further, applying a secondary cooling with the secondary cooling water. CONSTITUTION:The primary cooling water ejecting hole 23 having 15-40mm the distance from a meniscus and the secondary cooling water ejecting hole 24 having 20-45mm the interval between the contact position of the primary cooling water and the contact position of the secondary cooling water on the ingot (cast billet) are provided. The ejecting angle for the primary cooling water is set to 15-30 deg. and the ejecting angle for the secondary cooling water is set to 30-60 deg.. Solidification is progressed with the primary cooling water from the primary ejecting hole 23 in the cooling mold 2 and successively, the secondary cooling water is ejected toward the steam film in transition boiling zone and film boiling zone generated on the surface of the ingot 4 from the secondary ejecting hole 24. By this method, the nucleus boiling is generated by breaking through the transition boiling zone and the film boiling zone, and the ingot surface is directly secondary-cooled to form the solidified shell having further strength.

7. 发明专利

JPH0577017A DETECTION OF BREAKOUT IN CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH0577017A
公开(公告)日：1993-03-30
申请号：JP23950291
申请日：1991-09-19
申请人： YOSHIDA KOGYO KK
发明人： NAGAI YOSHITAKA , ARASE MAKOTO , OHATA NORIO
IPC分类号： B22D11/16
摘要： PURPOSE:To precisely and quickly detect the breakout with a simple device by connecting each one end of plural ropes under stretching condition to a tension detecting instrument and detecting the breakout from the change in the tension in the rope caused by the falling molten metal. CONSTITUTION:When the molten metal 1 projecting from a mold 4 drops due to occurrence of the breakout, the molten metal is stuck to at least one piece of the rope in plural ropes 12, 12... set at the lower part, and this rope 12 is melted and cut. By this cutting, the detecting end part in the tension detecting instrument 13 connected to the one end of the cut rope 12 is displaced, and this displacing signal is transmitted to a control device 8. At the time of receiving this signal in the control device 8, comparison-operation is executed between the detected value and the set value, and after confirmation of the breakout, a control signal is transmitted to a molten metal shut-off device 7, and by working a cylinder, a tip shut-off part in the molten metal shut-off device 7 is dipped into a trough 2 to stop the flow of the molten metal 1.

8. 发明专利

JPH04190947A HORIZONTAL CONTINUOUS CASTING DEVICE 失效
公开(公告)号：JPH04190947A
公开(公告)日：1992-07-09
申请号：JP31927490
申请日：1990-11-22
申请人： YOSHIDA KOGYO KK
发明人： NAGAI YOSHITAKA , ARASE MAKOTO , OHATA NORIO
IPC分类号： B22D11/04 , B22D11/124
摘要： PURPOSE:To continuously form the high quality ingot product by interposing an annular flow straightening means at the connecting part of an annular cooling water chamber in a mold and a cooling water injecting part opened to an inner peripheral face in the mold. CONSTITUTION:The mold 3 is fitted at the front face side of a tundish 1 through an orifice plate 2 to form this horizontal continuous casting device. The annular cooling water chamber 3-3 connected with a cooling water pouring hole 3-6, is provided on the inside of the mold 3. The cooling water injecting part 3-4 communicated with the cooling water chamber 3-3 and having tip opening part 3-5 opened as annular on the inner peripheral face in the mold 3 is provided. The annular flow straightening means 5 for feeding to the cooling water injecting part 3-4 by straightening the flow of cooling water in the cooling water chamber 3-3, is interposed at the connecting part of the cooling water chamber 3-3 and the cooling water injecting part 3-4. By this method, the whole peripheral surface of cast ingot can be uniformly cooled.

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