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31. 发明专利

JPH0751725A METHOD FOR CONTINUOUSLY GRINDING STEEL STRIP 失效
公开(公告)号：JPH0751725A
公开(公告)日：1995-02-28
申请号：JP20753293
申请日：1993-08-23
申请人： KAWASAKI STEEL CO , HOTANI KK
发明人： YAMAZAKI SHINJI , MATSUBARA TSUTOMU , MATSUDA AKIRA , YOSHIOKA MASAHIRO , YAMAMOTO JUNICHI , ITO MASAHIKO , TSUZUKI SATOSHI , HOTANI SETSUO
IPC分类号： B21B45/00 , B24B29/00
摘要： PURPOSE:To obtain a necessary amount and surface roughness by using a brush with abrasive grains of small count number in a stand of preceding stage and using a heavy grinding brush made of brush chips having abrasive grains of count number more than the preceding stage in the following stage. CONSTITUTION:Plural brush stands are arranged in series, grinding is executed in a stand of a preceding stage by using a heavy grinding brush 1 in which count number of brush chips is

32. 发明专利

JPH0211278A METHOD FOR SQUEEZING AND THINNING SUPERPOSED WELD ZONE OF SHEET METAL STRIPS 失效
公开(公告)号：JPH0211278A
公开(公告)日：1990-01-16
申请号：JP15809788
申请日：1988-06-28
申请人： KAWASAKI STEEL CO
发明人： MURAMOTO YU , MATSUBARA TSUTOMU , KAWASHIMA HISAO
IPC分类号： B23K11/06
摘要： PURPOSE:To squeeze and thin a superposed weld zone of sheet steel strips uniformly without abuses such as tearing-off by driving to rotate each roller of a couple of rollers and squeezing and thinning extending over the entire area of sheet width by one stage from one end part to the other end part of the superposed weld zone of the sheet steel strips. CONSTITUTION:The rollers 4 and 5 for squeezing and thinning start to move to the right with a slight time lag for starting welding with respect to the superposed weld zone of the sheet steel strips 1 and 2. At this time, the rollers 4 and 5 for squeezing and thinning are loaded with depressing force and rotated by driving forces 8 and 9 while being brought into contact with each other at the outside from the sheet steel strips. While being depressed and rotated, the couple of rollers 4 and 5 are moved up the stopping position A from the left to the right on the superposed weld zone of the sheet steel strips. The loads of cylinders 6 and 7 are then released and a gap between the rollers 4 and 5 is extended over the sheet thickness of the weld zone and then, the rollers 4 and 5 are moved to the left up to the stopping position B on the left and stand ready for next actions.

33. 发明专利

JPH0195803A METHOD FOR SKIN-PASS ROLLING OF METAL STRIP 失效
公开(公告)号：JPH0195803A
公开(公告)日：1989-04-13
申请号：JP25232187
申请日：1987-10-08
申请人： KAWASAKI STEEL CO
发明人： SHIMOYAMA YUJI , MATSUBARA TSUTOMU , AKIZUKI TOSHIO , ONISHI TAKEO , WAKUI YOKICHI
IPC分类号： B21B1/22 , B21B27/00
摘要： PURPOSE:To stably obtain good quality level sheets and to improve the productivity by forming a layer of Cr or Cr3C2 on bright rolls in a 2nd stand for skin-pass rolling by a two-stand rolling mill. CONSTITUTION:It is necessary to prevent generation of wear particles caused by rolling a steel sheet S in a 1st roll stand 1 and deposition of wear particles on the surface of bright rolls 2' to prevent degradation of surface roughness of the bright rolls 2' of a 2nd stand 2 and to stably obtain a black plate having a uniform surface roughness for plating in skin-pass rolling. Then, a layer of Cr or Cr3C2 having good tight adhesion to the rolls 2', wear resistance and high brightness is formed on the surface of the rolls 2'. Therefore, good quality black plates having a very little degradation tendency for tin plating are continuously obtained.

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