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1. 发明专利

JPS638849B2 失效
公开(公告)号：JPS638849B2
公开(公告)日：1988-02-24
申请号：JP3328682
申请日：1982-03-03
申请人： SUMITOMO METAL IND
发明人： TAKEDA TOSHIHIKO , MIURA MOCHITSUGU , YOSHIHARA KAKUJI
IPC分类号： B21B37/24 , B21B39/00 , B22D11/12

2. 发明专利

JPS6171102A Hot rolling method of billet prevented from surface cracking 失效
标题翻译：表面破裂预防措施的热轧方法
公开(公告)号：JPS6171102A
公开(公告)日：1986-04-12
申请号：JP16021384
申请日：1984-08-01
申请人： Sumitomo Metal Ind Ltd
发明人： OGAWA YUTAKA , YOSHIHARA KAKUJI
IPC分类号： B21B3/00 , B21B1/00 , B21B1/02 , B21B1/22 , B21B3/02 , C21D8/00
CPC分类号： B21B1/026 , B21B3/02
摘要： PURPOSE:To prevent effectively and supply a billet from generating cracks and to send it directly to a rolling stage by making the billet, containing a specific amount of Mn, contain a specific amount of Ti and rolling it under specific rolling conditions. CONSTITUTION:An ingot or a billet just after continuous casting, containing >=0.50% Mn, is rolled by direct-feed rolling or hot-charge rolling. In this case, the billet is rolled within the temperature range of a cooling stage following after its melting and solidifying and under the rolling conditions of >=1 rolling shape factor (m) defined by the equation; where R: radius of rolling roll, h1: thickness of material at inlet side of roll, h2: thickness of material at outlet side of roll.
摘要翻译：目的：为了有效防止钢坯产生裂纹，并通过制造含有特定量的Mn的钢坯，直接在轧制阶段，含有特定量的Ti，并在特定的轧制条件下轧制。构成：通过直接进料轧制或热充电轧制轧制刚刚连续铸造后的含有> = 0.50％Mn的锭料或坯料。在这种情况下，坯料在熔融固化后的冷却阶段的温度范围内滚动，并且在由等式定义的≥1滚动形状因子（m）的轧制条件下滚轧; 其中R：轧辊半径，h1：轧辊入口侧材料厚度，h2：辊出口侧材料厚度。

3. 发明专利

JPS60108165A METHOD FOR GAS CUTTING OF STEEL MATERIAL 失效
公开(公告)号：JPS60108165A
公开(公告)日：1985-06-13
申请号：JP21739883
申请日：1983-11-17
申请人： SUMITOMO METAL IND , KOIKE SANSO KOGYO KK
发明人： OKAMOTO SETSUO , YOSHIHARA KAKUJI , SUZUKI YOSHIO , SUGIZAKI NORITSUGU , TAKIGUCHI HIROSHI
IPC分类号： B22D11/126 , B23K7/00
摘要： PURPOSE:To remove the slag sticking to nozzles during cutting and to improve the life of the nozzles by moving two cutting torches in the direction where the torches approach to each other and replacing the preheating flame to be blown together with the gaseous oxygen of the rear nozzle facing one torch which is retreated just prior to completion of cutting with an inert gas. CONSTITUTION:Ejection of gaseous oxygen is continued with a rear side nozzle 52 facing a torch 22 to be retreated during the course of cutting in one way as the final stage of cutting and an inert gas is ejected in place of a preheating flame. The nozzle 52 on the retreat side during the process for cutting in one way is thus less covered with the slag formed by blowing from the nozzle 51 on the other side and the clogging of the hole for ejecting the preheating flame is prevented. The oxidation combustion force of the gaseous oxygen from the nozzle 52 is weakened by the ejection of the inert gas and the rear surface of a steel material 1 is prevented from flawing.

4. 发明专利

JPH07328755A METHOD FOR STARTING CONTINUOUS CASTING 失效
公开(公告)号：JPH07328755A
公开(公告)日：1995-12-19
申请号：JP12784994
申请日：1994-06-09
申请人： SUMITOMO METAL IND
发明人： YOSHIHARA KAKUJI
IPC分类号： B22D11/08 , B22D11/16 , B22D11/18
摘要： PURPOSE:To automate the starting process of continuous casting from the start of the pouring of molten metal into a mold up to the start of drawing-out of a dummy bar without necessitating the complicated calculation and without extremely changing the opening degree of the molten metal pouring means. CONSTITUTION:A level detecting instrument 2 provided with a sensor part 20 integrated with a vortex flow level meter and a temp. measuring instrument is arranged at the upper part of the mold M so as to face to the surface of the molten metal 3 is the inner part. The start of pouring the molten metal into the mold M whose lower part is closed by the dummy bar 5 is decided based on the detected result of the temp. measuring instrument. Further, it is decided based on the detected result of the vortex flow level meter that the molten metal is reached to a prescribed level in the mold M, and during this operation, the opening degree of a sliding nozzle 7 is kept to a prescribed opening degree. At the time from the arrival to the prescribed level up to the arrival to the drawing-out level, the pouring rate of the molten metal into the mold M is adjusted by controlling the opening degree of the sliding nozzle 2 based on the detecting level of the vortex flow level meter.

5. 发明专利

JPS6240902A METHOD FOR PREVENTING CRACK IN DIRECT HOT ROLLING OF CONTINUOUSLY CAST STEEL INGOT 失效
公开(公告)号：JPS6240902A
公开(公告)日：1987-02-21
申请号：JP18144285
申请日：1985-08-19
申请人： SUMITOMO METAL IND
发明人： NAKAI TAKESHI , KAWASAKI MORIO , MAEHARA YASUHIRO , FUNAKI HIROYUKI , YOSHIHARA KAKUJI , MISHIMA TAKESHI
IPC分类号： C21D8/00 , B21B1/00 , B21B1/02 , B21B3/00 , B22D11/12
摘要： PURPOSE:To prevent the generation of a crack and to reduce the cost of the rolling material from the improved yield by controlling the surface temp. of a continuously cast steel ingot of a low alloy steel specified in the range of C equiv. within the specific width at the end of the ingot in the direct hot rolling of said steel ingot. CONSTITUTION:The continuously cast low alloy ingot of which the equiv. value [CP] expressed by formula I taking weight % of alloy elements Mn, Ni, Cu, N to sharply affect the peritectic point for generating the gamma phase in the solidifying stage of the molten metal into account is 0.13-0.23 and with which the crack is liable to arise during rolling by the coarsening of the gamma phase is delayed in cooling within the 50-200mm range from the ingot end by the influence of the molten steel discharge flow and is liable to have the coarsened gamma phase in the case of subjecting such steel ingot to the direct hot rolling. The temp. within 200mm from the ingot end is consequently heated by a heater to >=900 deg.C or cooled by water down to

6. 发明专利

JPS6117301A Prevention of surface cracking of billet during hot rolling 失效
标题翻译：防止热轧过程中的表面破裂
公开(公告)号：JPS6117301A
公开(公告)日：1986-01-25
申请号：JP13522884
申请日：1984-07-02
申请人： Sumitomo Metal Ind Ltd
发明人： YOSHIHARA KAKUJI , NAKANO NOBURU , OGAWA YUTAKA
IPC分类号： B21B3/00 , B21B1/00 , B21B1/02 , C21D8/00 , C22C38/00
CPC分类号： B21B1/026
摘要： PURPOSE:To prevent the surface cracking of a billet during hot rolling without an increase in energy cost in direct rolling, etc. to be executed under prescribed conditions by limiting the chemical components S, N and Ti of the billet to prescribed ratios. CONSTITUTION:The chemical components of the billet are adjusted to, by wt%, to 0.003-0.02% S, 0.0015-0.009% N and 0.003-0.04% Ti and >=1.5 Ti/N. Such billet is subjected to direct rolling or hot charge rolling at 600-900 deg.C surface temp. and >=1.3 total reduction ratio.
摘要翻译：目的：通过将钢坯的化学成分S，N，Ti限制在规定的比例，在规定的条件下，为了防止在热轧中坯料的表面开裂，而不增加直接轧制等能量成本。构成：将坯料的化学成分按重量％调整为0.003-0.02％S，0.0015-0.009％N，0.003-0.04％Ti和> = 1.5Ti / N。这种钢坯在600-900℃的表面温度下进行直接轧制或热轧轧制。和> = 1.3总减速比。

7. 发明专利

JPS52111866A METHOD OF DIVISION ROLLING OF ROUGH STEEL PIECE FOR HHSHAPED STEEL 失效
公开(公告)号：JPS52111866A
公开(公告)日：1977-09-19
申请号：JP2967076
申请日：1976-03-17
申请人： SUMITOMO METAL IND
发明人： ITOU KOUICHI , YOSHIHARA KAKUJI
IPC分类号： B21B1/08

8. 发明专利

JPS6234663A CASTING METHOD FOR LH UNIDIRECTIONALLY SOLIDIFIED STEEL INGOT 失效
公开(公告)号：JPS6234663A
公开(公告)日：1987-02-14
申请号：JP17366985
申请日：1985-08-06
申请人： SUMITOMO METAL IND
发明人： KIGUCHI HIROSHI , YOSHIHARA KAKUJI , NAKANO NOBURU , OKAMOTO SETSUO
IPC分类号： B22D27/04 , B22D27/06
摘要： PURPOSE:To obtain a LH unidirectionally solidified steel ingot having a high columnar crystal range and defectless internal quality for a thick steel plate by throwing a molten steel coating material to form a slag layer in the initial period of casting then throwing a slow burning type exothermic heat insulating material in continuation until the casting ends and further throwing a strong exothermic heat insulating material since the end period of casting. CONSTITUTION:The steel ingot of a low height having

9. 发明专利

JPS61144243A MANUFACTURE OF CLAD STEEL INGOT 失效
公开(公告)号：JPS61144243A
公开(公告)日：1986-07-01
申请号：JP26583984
申请日：1984-12-17
申请人： SUMITOMO METAL IND
发明人： OKAMOTO SETSUO , YOSHIHARA KAKUJI , SUZUKI SADAYUKI
IPC分类号： B22D7/02 , B22D19/16
摘要： PURPOSE:To improve a blooming yield by providing a projecting fin at lateral ends of a clad metal and determining the thickness, width, and length to be a specified size, respectively. CONSTITUTION:The projecting fin 7 is provided at both the lateral ends 2a of the clad metal 2 hung in a mold 3 previously. The thickness of the fins 7 is thinner than that of the clad metal 2 and the length of the fins 7 is equal to the full length of the ends 2a. The fins 7 are welded to the clad metal 2. The lateral size of the fins 7 is to be a size making a sufficient clearance between the fin and a facing inside surface of the mold 3. Propagation of cracks in the lateral direction is prevented by buffer action of the fins 7 when a clad ingot casted by this method is rolled by a blooming mill, so that the blooming yield is increased.

10. 发明专利

JPS6027738B2 失效
公开(公告)号：JPS6027738B2
公开(公告)日：1985-07-01
申请号：JP3712080
申请日：1980-03-24
申请人： SUMITOMO METAL IND
发明人： YOSHIHARA KAKUJI
IPC分类号： B22D33/00 , C21D1/00 , C21D9/00 , C21D9/70

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