专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明专利

JPH0368762B2 失效
公开(公告)号：JPH0368762B2
公开(公告)日：1991-10-29
申请号：JP9473686
申请日：1986-04-25
申请人： NIPPON STEEL CORP
发明人： TOKI MASAHIRO , MATSUZAKI KATSUNARI , YAMAMOTO MASANAO
IPC分类号： B21B1/22 , B21B1/38 , B21B27/00 , B21B45/02

92. 发明专利

JPH02237670A GAS-LIQUID SPRAY NOZZLE 失效
公开(公告)号：JPH02237670A
公开(公告)日：1990-09-20
申请号：JP5825089
申请日：1989-03-09
申请人： NIPPON STEEL CORP , SUPUREEINGU SYST JAPAN KK
发明人： KAWAGUCHI KATSUNORI , TOKI MASAHIRO , ISHIHARA TAKAYUKI
IPC分类号： B22D11/124 , B05B7/24 , C21D1/00
摘要： PURPOSE:To uniformly inject mixed gas and liq. by inserting a liq. inlet pipe so that its front end reaches the front end of a gas inlet pipe and reducing the inner diameter of a mixture supply pipe toward a nozzle main body. CONSTITUTION:A gas-liq. spray nozzle 1 is provided with the gas inlet pipe 2, and the liq. inlet pipe 3 is inserted into the gas inlet pipe 2 so that its front end reaches the front end of the gas inlet pipe 2. A surface 6 tapered radially and forward is provided on the inner periphery of the mixture supply pipe 5, and a gas current introduced from the circumferential part of the mixture supply pipe 5 is sent toward the center of the mixture supply pipe 5 along the tapered surface 6. The gas current sent toward the center along the tapered surface 6 collides with a liq. current from the liq. inlet pipe 3, and the liq. is fluidized by the gas current and crushed in the mixture supply pipe 5. The liq. is crushed by the high-speed gas current, and the liq. is uniformly distributed in the gas current by the narrowed gas-liq. passage.

93. 发明专利

JPS6327415B2 失效
公开(公告)号：JPS6327415B2
公开(公告)日：1988-06-02
申请号：JP1944181
申请日：1981-02-12
申请人： NIPPON STEEL CORP
发明人： NAKAMOTO KATSUMI , OOKUMA FUJIO , TOKI MASAHIRO
IPC分类号： C22B1/26 , F27B21/00

94. 发明专利

JPS60174833A COOLING METHOD OF HOT STEEL SHEET 失效
公开(公告)号：JPS60174833A
公开(公告)日：1985-09-09
申请号：JP2866684
申请日：1984-02-20
申请人： NIPPON STEEL CORP
发明人： MATSUZAKI KATSUNARI , TOKI MASAHIRO , MAZAWA MASATO , YAMAMOTO MASANAO , MIYAWAKI HIROKI
IPC分类号： B21B45/02 , B21B1/26 , B21B1/38 , B21B15/00 , B21B37/44 , B21B37/76 , B21B45/00 , C21D1/667 , C21D9/52 , C21D11/00
摘要： PURPOSE:To obtain a steel sheet having a good shape without deformation owing to cooling by cooling the hot steel sheet in such a way that the part near the width of the sheet causes Ar3 transformation simultaneously or with delay with or from the central part of the steel sheet. CONSTITUTION:A steel sheet M after hot rolling 1 is sandwiched by plural pairs of upper and lower rolls 17 which are arranged in the feed direction of the sheet M. While the sheet M is fed longitudinally, cooling water is supplied to the top and bottom surfaces of the sheet M from plural stages of nozzles 19 positioned between the adjacent roller pairs 17 and the sheet M is thus cooled. The temp. distribution in the transverse direction of the sheet M is actually measured by a scanning type thermometer prior to starting of cooling of the steel sheet and a required average cooling rate is set. The width from the sheet side where the cooling water to be supplied to the bottom surface of the sheet M is shut off is operated for each of the respective nozzle stages in accordance with the temp. distribution and the average cooling rate to maintain the temp. near the width at the temp. in the central part thereof or above so that the part near the sheet end causes Ar3 transformation simultaneously or with delay. The cooling water to be directly supplied to the sheet end is shut off by side end shutting plates 30 in accordance with the operated width.

95. 发明专利

JPS57145914A FOAMING SUPPRESSING METHOD IN MOLTEN IRON RECEIVING VESSEL 失效
公开(公告)号：JPS57145914A
公开(公告)日：1982-09-09
申请号：JP3054381
申请日：1981-03-05
申请人： NIPPON STEEL CORP
发明人： KASE MASAJI , KUME SHIYOUICHI , MUKAI TATSUO , TOKI MASAHIRO , OKUDA KOUSUKE
IPC分类号： C21C5/28 , C21C1/04
摘要： PURPOSE:To perform receiving of molten pig iron while suppressing foaming perfectly by determining the storage height of the molten pig iron and the thickness of a slag layer from the amt. of the molten pig iron received in a vessel and the amt. of addition of a desiliconizing agent and moving a gas blowing nozzle in follow up to the ascending of the slag layer. CONSTITUTION:The amt. of the molten pig iron received in a molten pig iron receiving vessel is measured continuously, and the height of the molten pig iron is determined from the relations between the amt. of the molten pig iron received and the storage height of the molten metal which are prepared beforehand. On the other hand, the thickness of the slag layer floating on the upper part of the molten pig iron is determined theoretically from the amt. of addition of the desiliconizing agent. With respect to the slag layer ascending in accordance with the ascending of the storage height of the molten pig iron, the nozzle under blowing of gas is moved upward in follow up to the desired positions in the vertical direction. Thereby, a desired amt. of the molten pig iron is received safely under the perfect suppression of foaming in the floating slag.

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