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1. 发明公开

EP0575617A4 METHOD OF CONTINUOUSLY CASTING METAL THIN STRIP 失效
标题翻译：连续铸造金属薄条的方法
公开(公告)号：EP0575617A4
公开(公告)日：1996-10-16
申请号：EP92906689
申请日：1992-03-16
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： FUKUDA YOSHIMORI , SHIMOMURA KENSUKE , ARAI TAKASHI
IPC分类号： B22D11/06
CPC分类号： B22D11/066

2. 发明专利

JPH05318043A METHOD OF CONTINUOUSLY CASTING METAL STRIP AND APPARATUS THEREFOR 失效
公开(公告)号：JPH05318043A
公开(公告)日：1993-12-03
申请号：JP10286492
申请日：1992-04-22
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： ARAI TAKASHI , YOSHIMURA YUJI , FUKUDA YOSHIMORI
IPC分类号： B22D11/06
摘要： PURPOSE:To stably cast a metal strip having good shape for a long period without developing breakage of the cast strip, in a twin roll type continuous casting method. CONSTITUTION:At the time of producing the metal strip by solidifying A molten metal supplied into a basin part 6 constituted of one pair of cooling drums 2, 3 and side weirs 4, the cast strip is produced while keeping the temp. Ty ( deg.C) of the molten metal in the pouring basin part and the temp. Ts ( deg.C) of a side weir in the temp. range satisfying the following two expressions, Tm+10

3. 发明专利

JPH02295648A COOLING DRUM FOR CASTING CAST STRIP 失效
公开(公告)号：JPH02295648A
公开(公告)日：1990-12-06
申请号：JP11798789
申请日：1989-05-10
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： FUKUDA YOSHIMORI , TANAKA SHIGENORI , YAMAMOTO KEIICHI , SASAKI KUNIMASA
IPC分类号： B22D11/06
摘要： PURPOSE:To produce a cast strip having excellent quality without surface roughness and crossing fold, etc., by regulating interval between dimples adjacent to each other as to the multiple dimples having the specific size on circumferential side of the cooling drum forming a part of mold and carving. CONSTITUTION:The dimples 4 are made to the round or ellipse shaped opening part having 0.4-1.2mm diameter D, 5-100mum depth and 1.2-3.0mm distance L between the dimples. In the cooling drum, by forming the dimples specifying the diameter D and the distance L between the adjacent dimples on the circumferential face as above mentioned, the solidified shell is grown under condition of slow cooling part, and the restraint of the solidified shell to the cooling drum is made sure. By this method, uniform cooling can be executed over the whole face of solidified shell and the development of locally large shrinkage force is avoided to obtain the strip product having good surface characteristic.

4. 发明专利

JPH06134553A MOLD FOR CONTINUOUSLY CASTING THIN CAST SLAB AND METHOD FOR WORKING SURFACE THEREOF 失效
公开(公告)号：JPH06134553A
公开(公告)日：1994-05-17
申请号：JP28889292
申请日：1992-10-27
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： FUKUDA YOSHIMORI , TANAKA SHIGENORI , TAKEUCHI HIDEMARO , MATSUBARA YASUO
IPC分类号： B22D11/06 , B24C1/10 , C21D7/06
摘要： PURPOSE:To enable the formation to a mold having the recessed hole distribution without any cracking and uneven brightness of a cast slab by suitably distributing the large diameter recessed holes and the small diameter recessed holes engraved on the mold surface by a shot blast method and constituting the remained surface with the flat part having a specific surface roughness. CONSTITUTION:The surface of the moving mold is formed of the recessed holes having diameter d1=0.4-1.0mm of round shaped or ellipse-shaped opening part and diameter d2 engraved over >=90% of the peripheral area of this moving mold by the shot blast method. Further, the remained surface is constituted with the flat part having

5. 发明专利

JPH03110044A COOLING DRUM FOR CASTING CAST STRIP 失效
公开(公告)号：JPH03110044A
公开(公告)日：1991-05-10
申请号：JP24527989
申请日：1989-09-22
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： FUKUDA YOSHIMORI , TANAKA SHIGENORI , YAMAMOTO KEIICHI , YAMANE TAKASHI
IPC分类号： B22D11/06
摘要： PURPOSE:To grow solidified shell under slow cooling and to obtain a strip product without crack and fold by specifying diameters D1 and D2 of dimples and distances L1 and L2 between adjacent dimples and forming the dimples on circumference of a cooling drum under these conditions. CONSTITUTION:The multiple dimples A having round opening parts satisfying 0.4

6. 发明专利

JPH0390249A METHOD FOR CONTINUOUSLY CASTING CAST STEEL STRIP WITH THIN THICKNESS 失效
公开(公告)号：JPH0390249A
公开(公告)日：1991-04-16
申请号：JP22325289
申请日：1989-08-31
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： KAJIOKA HIROYUKI , MIZUCHI ISAO , FUKUDA YOSHIMORI , YAMAMOTO KEIICHI , YAMANE TAKASHI
IPC分类号： B22D11/06 , B22D11/10 , B22D11/106
摘要： PURPOSE:To restrain vaporization of Mn and to prevent the development of dotted contamination by adjusting contents of O and S in molten steel and concn. of N2 atmosphere to the specific condition. CONSTITUTION:In continuous casting method for a cast steel strip 4, a continuous casting machine providing cooling drums 1, 2, where the molten steel is cooled and the cast steel strip 4 is formed, is used and by restraining the vaporization of Mn contained in the molten steel in pouring basin part 3, the vapor deposition of Mn on the cooling drums 1, 2 is prevented. Therefore, O and S contents in the molten steel is adjusted respectively and N2 concn. is decided so that the sum of the contents of O and S concn. of N2 near the surface of the molten metal satisfies the condition of the inequality 1. In such way, O, S and N2 at the specific value or more is condensed near part of the surface of molten steel in the pouring basin part 3 and acts so as not to vaporize by shutting up Mn in the molten steel. Therefore, it is eliminated that Mn is unevenly deposited on the surface of cooling drums 1, 2 to become MnO by vaporizing of Mn in the molten steel.

7. 发明专利

JPH06154958A TWIN ROLL TYPE CONTINUOUS CASTING METHOD 失效
公开(公告)号：JPH06154958A
公开(公告)日：1994-06-03
申请号：JP31198792
申请日：1992-11-20
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： FUKUDA YOSHIMORI , OKA HIDETAKA , YAMADA MAMORU , ARAI TAKASHI , MIYAZAKI MASAFUMI , WAKIYAMA YOICHI , TERADO SADAMU
IPC分类号： B22D11/06 , B22D11/18
摘要： PURPOSE:To prevent generation of a crack, a wrinkle, waviness, etc., of an ingot, and to prevent unevenness of plate thickness in the widthwise cross section direction by executing moving control of a pair of baffleplates, based on the temperature of a molten metal and the detection value of plate thickness of a sheet. CONSTITUTION:Plate thickness of an ingot 11 is measured by a plate thickness gauge 13 of an X-ray transmission device, etc., installed right under cooling rolls 2, 3. A molten metal temperature between baffleplates 8, 9 and the cooling rolls 2, 3 is measured by a temperature sensor 22. This detected temperature signal is subjected to arithmetic processing by a controller 19, and dipping depth in each molten metal of the baffleplates 8, 9, a distance from cooling roll outside peripheral surfaces 2a, 3a to the baffleplates 8, 9, or a gap in the left and the right of the cooling rolls by turning in the horizontal direction are varied, and controlled so that a temperature of the molten metal is equalized.

8. 发明专利

JPS63242450A METHOD FOR CONTINUOUSLY CASTING METAL STRIP 失效
公开(公告)号：JPS63242450A
公开(公告)日：1988-10-07
申请号：JP7816187
申请日：1987-03-30
申请人： NIPPON STEEL CORP , MITSUBISHI HEAVY IND LTD
发明人： MIZUCHI ISAO , FUKUDA YOSHIMORI , YAMAMOTO KEIICHI , YAMANE TAKASHI
IPC分类号： B22D11/06
摘要： PURPOSE:To shorten the time from casting start to steady state and to improve the yield of a metal strip product by supplying shortage of molten metal in pouring basin part at the casting start by easy melting metal separately charged at the time of producing the metal strip directly from the molten metal by twin roll type continuous casting machine. CONSTITUTION:At the time of rotating two cooling rolls 1a, 1b mutually toward reverse direction and producing the metal strip by continuously drawing the metal strip from the molten metal poured in gap between the rolls, at first tip of a dummy bar 3 for drawing the continuously cast strip is inserted into the gap part 2 of both rolls 1a, 1b and the easy melting metal material 4 added elements, which lower melting point, such as C, Si, in the pouring basin part at upper part thereof. This metal material 4 is easily melted by holding heat of the molten metal as raw material successively poured and the pouring basin part is formed at short time and immediately the continuous casting operation can be started. By cut-removing unsound part containing a little of the easy melting metal contacting with the dummy bar 3, the metal strip can be produced under excellent yield of raw material.

9. 发明专利

JPH05228585A DEVICE FOR REMOVING SCUM IN STRIP CONTINUOUS CASTING APPARATUS 失效
公开(公告)号：JPH05228585A
公开(公告)日：1993-09-07
申请号：JP3328292
申请日：1992-02-20
申请人： MITSUBISHI HEAVY IND LTD , NIPPON STEEL CORP
发明人： SASAKI KUNIMASA , WAKIYAMA YOICHI , MIZUCHI ISAO , FUKUDA YOSHIMORI
IPC分类号： B22D11/06 , B22D11/10 , B22D11/11 , B22D11/112 , B22D11/116
摘要： PURPOSE:To eliminate defect of surface flaw, etc., in a cast strip by sticking and removing scum floated on molten metal surface to a wire rod enabling supplement and cutting. CONSTITUTION:The wire 6 is projected to tip part of a guide nozzle 1 and dipped into the molten metal 61. Then, a carriage 2 mounting the guide nozzle 1, wire supplying machine 3, pinch rolls 4 and straightening rolls 5 is reciprocated between side weirs 52 by a hydraulic cylinder 8. Then, the scum 63 floated on the molten metal 61 is stuck and removed to the wire 6. When the scum 63 stuck to the projecting part of the wire 6 becomes large, the carriage 2 is ascended every base plate 7 by a hydraulic cylinder 9, and the tip part of the guide nozzle 1 is shifted to the outside of molten metal storage part and the wire 6 is cut and removed by a cutter 11, and the following scum removing work is again executed by supplying the consumed wire 6.

10. 发明专利

DE69510291D1 未知
公开(公告)号：DE69510291D1
公开(公告)日：1999-07-22
申请号：DE69510291
申请日：1995-03-24
申请人： NIPPON STEEL CORP
发明人： NAKASHIMA HIROYUKI , OKA HIDEKI , TAKEUCHI HIDEMARO , TANAKA SHIGENORI , FUKUDA YOSHIMORI , AKAMATSU SATOSHI , MIYAZAKI MASAFUMI , MATSUMURA YOSHIKAZU
IPC分类号： B22D11/06 , B22D11/12 , B22D11/124 , C21D8/04
摘要： In continuous casting of a carbon steel thin strip slab, the present invention makes the scales generated in the slab thin and produces a composition suitable for machining such as cold rolling and pressing. The construction of an apparatus for restricting the occurrence of the scales is simplified, a consumption quantity of an inert gas is saved, and the slab is produced efficiently. A carbon steel containing not greater than 0.5 % of C is cooled and solidified by a pair of cooling drums to produce a thin strip slab having a thickness of not greater than 10 mm, the slab so produced is introduced into a sealed chamber and is held in an argon atmosphere having an oxygen gas concentration of not higher than 5 % within a temperature range of up to at least 1200 DEG C, the temperature range is then cooled to 750 to 800 DEG C at a cooling rate of at least 10 DEG C/sec, and the slab is taken up by a winding machine into a coil within a temperature range of 500 to 800 DEG C. The atmosphere described above is generated by utilizing a nitrogen gas or a combustion waste gas, the formation of the scales is restricted, and the composition is controlled.

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