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1. 发明专利

JPH038540A SHORT SIDE FIXED MOLD IN BELT TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH038540A
公开(公告)日：1991-01-16
申请号：JP14239289
申请日：1989-06-05
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： NAKAMURA SHOZO , MATSUSHIMA TOKUNORI , ISHIBASHI KOJI , INOUE TOMOAKI , CHIBA YOSHIAKI , KIMURA TOMOAKI , MORIWAKI SABURO
IPC分类号： B22D11/06
摘要： PURPOSE:To make contacting load working between a belt and short side little and to reduce wear of the short side and sliding flaw on the belt by forming shape of the short side fixed mold to trapezoid shape, which the short side face at molten metal side is longer than the short side face at the reverse side, in the cross sectional face thereof. CONSTITUTION:The short side fixed mold 20 forms the trapezoid shape having the length of the face 20a at the molten steel 16 side is longer than the length of the face 20b at the air side in the cross sectional face shape. A flowing passage of the high pressure water formed with the belt 4 contacting with the short side 20 and cooling pad, is made to divergent shape toward reverse molten steel side from the molten steel side. As both of the belt 4 and the short side 20 are in contact with both sides, the contacting surface load is made to little as compared with the case of contacting with only the ordinary both sides of the short side, and the wear of the short side and the sliding flaw of the belt are reduced.

2. 发明专利

JPH02155543A APPARATUS FOR CONTINUOUSLY CASTING CAST STRIP 失效
公开(公告)号：JPH02155543A
公开(公告)日：1990-06-14
申请号：JP30997988
申请日：1988-12-09
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： MATSUSHIMA TOKUNORI , NAKAMURA SHOZO , INOUE TOMOAKI , CHIBA YOSHIAKI , KIMURA TOMOAKI , MORIWAKI SABURO
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent the development of solidified shell in a short wall side curving part and to prevent breakout and surface crack in long wall side of a cast slab by controlling impressed power quantity into high frequency heating coil arranged along refractory of the fixed short wall side. CONSTITUTION:The heating coil 13 is connected with a high frequency generator 14 and the high frequency generator 14 controls the impressed power quantity into the heating coil with signal from an output setter 15 or an output control unit 16 so as to remelt the solidified shell developing at the curving part in the short wall side or so that the solidified shell does not develope. The output control unit 16 works by signal from a solidified shell predicting computing element for predicting-calculating size, developing or disappear phenomena of the solidified shell developing at the curving part in this short wall side through the signal from plural pieces of the temp. detectors 18, 19, 20 arranged in refractory 9.

3. 发明专利

JPH01317662A MOLTEN STEEL POURING NOZZLE FOR BELT TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH01317662A
公开(公告)日：1989-12-22
申请号：JP14978788
申请日：1988-06-17
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： NAKAMURA SHOZO , INOUE TOMOAKI , MATSUSHIMA TOKUNORI , CHIBA YOSHIAKI , KIMURA TOMOAKI , MORIWAKI SABURO , YOSHIDA HISASHI
IPC分类号： B22D11/06 , B22D11/10
摘要： PURPOSE:To prevent the development of solidified shell by joining molten steel in a tundish poured through a molten steel discharging hole of an inner tube and molten steel in a mold sucked through a molten steel sucking hole of an outer tube at the inner part of the outer tube and flowing the molten metal into the molten from a discharging hole of the outer tube. CONSTITUTION:In the double tube nozzle 10, the molten steel in the tundish 1 is flowed into the inner tube 12 and the molten steel in the mold, which is out of the outer tube 11, is sucked from the molten steel sucking hole 13 with kinetic energy of the molten steel flowed through the molten steel discharging hole 15 of the inner tube 12. Jet pump action flowed into the mold toward the short wall 5 side through the molten steel discharging hole 14 of the outer tube 11 by joining with the molten steel from the inner tube 12, is generated and the forced convection is developed to the molten steel in the mold. By this method, the molten steel flowing velocity at the fixed short wall curving part can be made high and also the flowing velocity at the molten steel surface near the nozzle 10 is made high to eliminate stagnation of the molten steel. Further, the development of the solidified shells at the short wall curving part and the outer surface of the nozzle is prevented and the occurrence of breakout and the surface crack at the long wall side in the mold can be prevented.

4. 发明专利

JPH01237053A PLATE TYPE LIQUID FILM NOZZLE FOR CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH01237053A
公开(公告)日：1989-09-21
申请号：JP6042788
申请日：1988-03-16
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： NAKAMURA SHOZO , MATSUSHIMA TOKUNORI , INOUE TOMOAKI , ARAI TORU , KIMURA TOMOAKI , YABUKI TAKASHI , YOSHIDA HISASHI , YAMADA HIROSUKE
IPC分类号： B22D11/06 , B22D11/10
摘要： PURPOSE:To make thinning of a cast film to the necessary min. thickness and to prevent variation of molten steel surface and mixture of air bubble into the molten steel by constituting a molten steel nozzle with a nozzle plate. CONSTITUTION:The plate type liquid film nozzle 1 is composed of the nozzle plate 14 extending to inner part of molten steel flow-out hole 12 holding both side edges with one pair of plate-like side plates extended from bottom part of a tundish 6 toward lower part at the both side edges of the rectangular molten steel flow-out hole 12 arranged at the bottom part of the rectangular tundish 6. The nozzle plate 14 is submerged into the molten steel in the straight short side mold. The molten steel 7 in the tundish 6 is supplied into the molten steel in the mold as the liquid film along the surface and the side plate of the nozzle plate 14 after passing through the molten steel flow-out hole 12.

5. 发明专利

JPS6475151A CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPS6475151A
公开(公告)日：1989-03-20
申请号：JP23339787
申请日：1987-09-17
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： INOUE TOMOAKI , KAWAIKE KAZUHIKO , NAKAMURA SHOZO , MATSUSHIMA TOKUNORI , KIMURA TOMOAKI , YABUKI TAKASHI , YAMADA HIROSUKE
IPC分类号： B22D11/06
摘要： PURPOSE:To accurately hold gap between a belt and a static pressure pad and to enable stable movement of the belt by opening a water supplying hole at center of annular part projecting from the static pressure pad surface in belt driving type continuous casting apparatus. CONSTITUTION:The water supplying holes 7 having the annular parts 7a, where are slightly projected from the static pressure pad surface 6, are arranged on the static pressure pad 5 at interval having the necessary min. limit. The water supplying hole 7 is communicated with a water supplying header 10 in the static pressure pad 5 and the pressurized water supplied from a water supplying pump is injected from the water supplying hole 7 with the pressure balancing to the static pressure of molten steel and locally high pressure is generated to float up the belt 3 from the annular part 7a. Next, the pressurized water injected from the water supplying hole 7 is passed through flowing passage formed between the belt 3 and the pad surface 6, and after cooling the belt 3, it is drained to the out of the apparatus through drainage holes 9, 11. There. fore, as the belt 3 is not brought into contact with the annular part 7a, it is not worn and as the water supplying holes 7 are dotted on the pad surface, the deformation of the belt 3 is minor.

6. 发明专利

JPH01113155A COOLING PAD FOR BELT TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPH01113155A
公开(公告)日：1989-05-01
申请号：JP26775887
申请日：1987-10-23
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： MATSUSHIMA TOKUNORI , NAKAMURA SHOZO , INOUE TOMOAKI , KAWAIKE KAZUHIKO , KIMURA TOMOAKI , YAMADA HIROSUKE
IPC分类号： B22D11/06
摘要： PURPOSE:To reduce deformation of a belt and to improve thickness accuracy of a cast slab by injecting cooling water from water supplying hole at pressure balancing with the molten metal static pressure and floating up the movable belt at position higher than the height of belt-like projection from surface of a cooling pad. CONSTITUTION:The pressurized cooling water supplied is injected from water supplying holes 9 at the pressure balancing with the molten metal static pressure and the movable belt 4 is floated up at the position higher than the height of the belt-like projections 16, 18 from the surface 40 of the cooling pad 6. Then, thickness of water film is made to thicker than the height of the projections 16, 18. The cooling water is drained through drainage hole 12 after cooling the movable belt 4. By such constitution, the deformation of the belt is reduced and the thickness accuracy of the cast slab is improved.

7. 发明专利

JPS63174760A CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPS63174760A
公开(公告)日：1988-07-19
申请号：JP317287
申请日：1987-01-12
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： NAKAMURA SHOZO , MATSUSHIMA TOKUNORI , INOUE TOMOAKI , KIMURA TOMOAKI , KUGA MASAAKI
IPC分类号： B22D11/06 , B22D11/10 , B22D11/108
摘要： PURPOSE:To improve the productivity of continuous casting and the quality of a cast slab by crushing useless steel produced in a continuous casting direct rolling mill to granule fine steel pieces and adding the fine steel pieces into molten steel through a supplying nozzle after removing their oxide film. CONSTITUTION:The continuous casting apparatus cools the molten steel 11, which is poured between one pair of metallic belts 4, 4 ' shifted as circulating from a nozzle 2 of tundish 1, by cooling pads 6, 6 ' at back faces of the belts 4, 4 '. Next, the solidified cast slab 13 is sent to a cutter 7 and the rolling line of tandem mill 9 providing heat holding zone 8 to roll to a strip. Then, the useless steel produced at the continuous casting apparatus or succeeding production process is crushed into the granule fine steel pieces by a crusher 20. In succession, the fine steel pieces removing oxide film by a reducing treatment device 21 are supplied into the molten steel 11 through the supplying nozzle 23. In this way, the productivity of continuous casting is improved and the cast slab having good quality is produced.

8. 发明专利

JPH02165847A CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH02165847A
公开(公告)日：1990-06-26
申请号：JP31829688
申请日：1988-12-16
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： INOUE TOMOAKI , CHIBA YOSHIAKI , NAKAMURA SHOZO , MATSUSHIMA TOKUNORI , KIMURA TOMOAKI , MORIWAKI SABURO
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent the development of breakout, etc., caused by solidified shell developing on a short side member by setting exciting device between refractory and cooling member surrounding the refractory being the tapered short side members downward constituting both end sides of a mold. CONSTITUTION:Into the mold constituted of one pair of the cooling belts 4 and the tapered downward short side members 5 at both ends, the molten steel 2 is supplied from a tundish 1 through a nozzle 3, cooled and solidified with the cooling pads 6 supporting and cooling the cooling belts 4 to obtain the cast slab. In the above continuous casting apparatus, the short side member 5 is constituted of the refractory 9 having tapered shape downward and excellent heat insulation and cooling member 10 surrounding the refractory 9 except at least inner face of the mold. Further, the exciting device 11 of actuator, etc., composed of piezoelectric element is arranged at between the above refractory 9 and cooling member 10. By this method, the solidified shell developed on the short side member 5 is separated from the solidified shell on the cooling belt 4 and the developments of the breakout and double skin caused by crack of the solidified shell are prevented.

9. 发明专利

JPS6471554A BELT TYPE CONTINUOUS CASTING MACHINE 失效
公开(公告)号：JPS6471554A
公开(公告)日：1989-03-16
申请号：JP22636487
申请日：1987-09-11
申请人： HITACHI LTD , KAWASAKI STEEL CO
发明人： NAKAMURA SHOZO , INOUE TOMOAKI , MATSUSHIMA TOKUNORI , KAWAIKE KAZUHIKO , KIMURA TOMOAKI , YABUKI TAKASHI , ARAI TORU , YAMADA HIROSUKE
IPC分类号： B22D11/06
摘要： PURPOSE:To prevent deformation of a movable belt by forming total area of flow passage at water drainage part of each cooling pad larger than both of total area of a flow passage at adjacent water supplying part and total area of a flow passage formed at gap between the movable belt and the cooling pad. CONSTITUTION:The total areas SIGMAA1 of the flow passage for each row summing up the cross sectional area A1 of the flow passage in the water supplying hole 9 for each row and the total areas SIGMAA4 of the flow passage for each row summing up the cross sectional area A4 of the flow passage in the water drainage hole 10 for each row are to form to SIGMAA4>SIGMAA1. Further, the total areas SIGMAA3 of the annular flow passage for each row summing up the cross sectional area A3 of the annular flow passage for each row are to form to SIGMAA4>SIGMAA3. Then, in order to always keep the water supplying flow rate to constant, the total areas SIGMAA2 of the annular flow passage for each row summing up the cross sectional area A2 of the annular flow passage for each row are to form to SIGMAA1

10. 发明专利

JP2001007574A ELECTRONIC APPARATUS 失效
公开(公告)号：JP2001007574A
公开(公告)日：2001-01-12
申请号：JP17293799
申请日：1999-06-18
申请人： HITACHI LTD
发明人： KONO TSUTOMU , IIDA MAKOTO , NAKAMURA SHOZO , KURAMOTO HIROKI , NAKAGAWA TAKESHI
IPC分类号： H05K7/14 , B29C45/14
摘要： PROBLEM TO BE SOLVED: To provide an electronic apparatus in which deformation such as warpage is difficult to form and which has structure proper to recycling treatment. SOLUTION: A plurality of lower holes 1a, 1b are bored to a metal plate 1 as the framework of the box body of the electronic apparatus, and hooks 2a, 2b integrally molded on the backside of a molding part 2 as the external facing of the box body are installed to each of the lower holes one by one. The lower hole 1b at a center constrains the movement of the hook 2b in an xy plane. Sliding regions for moving the hooks 2a in the direction (the direct towards the fixed hook 2b) towards the center of the mold shrinkage of the molding part 2 are ensured in other lower holes 1a. A boss hole 2c for a mounting screw is formed to the head section of at least one sliding hook 2a. A screw for fixing a part housed in the box body is fitted into the boss hole 2c.

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