METHOD AND APPARATUS FOR CONTROLLING WIDTH AND THICKNESS OF STRIP

    公开(公告)号:CA1213762A

    公开(公告)日:1986-11-12

    申请号:CA419315

    申请日:1983-01-12

    Abstract: METHOD AND APPARATUS FOR CONTROLLING WIDTH AND THICKNESS OF STRIP Width and thickness of a hot-rolled and descaled strip are controlled by performing, in a line in which the strip runs, a rough control step for reducing correction of the width and the thickness of the strip in only the longitudinal ends thereof and a fine control step for reducing correction of the width and the thickness of the strip over the entire length thereof, respectively at least one time, so that the desired width and thickness of the strip are obtained in the last reduction.

    METHOD AND APPARATUS FOR CONTROLLING WIDTH AND THICKNESS OF STRIP

    公开(公告)号:GB2115732A

    公开(公告)日:1983-09-14

    申请号:GB8300785

    申请日:1983-01-12

    Abstract: Width and thickness of a hot-rolled and descaled strip are controlled by performing, in a line in which the strip runs, a rough control step for reducing correction of the width and the thickness of the strip in only the longitudinal ends thereof and a fine control step for reducing correction of the width and the thickness of the strip over the entire length thereof, respectively at least one time, so that the desired width and thickness of the strip are obtained in the last reduction.

    Clean cold-rolled steel strip prodn.

    公开(公告)号:IT1156514B

    公开(公告)日:1987-02-04

    申请号:IT6807382

    申请日:1982-09-08

    Abstract: Clean cold rolled strip is produced by (i) injecting a rolling lubricant emulsion of low concn. at high ressure onto both faces of the stri at the last roling mill stand to remove spots of oil or metal dust from the strip surfaces, (ii) charging the cold rolled strip to a box annealing surface; (iii) mixing steam with the furnace atmos. comprising mainly nitrogen and hydrogen; and (iv) controlling the dew point of the furnace atmos. to within a predetermined temp. range, pref. -1 deg. C. Clean steel strip is roduced in a simple and economical manner, without requiing ceaning instalations, and strip prodn. yields can be increased by about .2% due to the improvement in surface quality.

    TANDEM MILL
    6.
    发明专利

    公开(公告)号:CA1174084A

    公开(公告)日:1984-09-11

    申请号:CA381756

    申请日:1981-07-15

    Abstract: A tandem mill comprising a plurality of stands wherein at least one sleeve-expanding mill is disclosed at either an upstream or a downstream stand, and at least one of either a sleeve-sliding mill or a intermediate backup roll shifting mill is disposed at the other of either an upstream or a downstream stand.

    Method for producing a clean, cold-rolled strip

    公开(公告)号:FR2532203A1

    公开(公告)日:1984-03-02

    申请号:FR8214883

    申请日:1982-08-31

    Abstract: The present invention relates to a method for producing a clean, cold-rolled metal strip. The method of the invention consists in injecting a lubricating rolling emulsion at a high pressure and at a low concentration on both sides of a metal strip 11 in the last stand 5 of a rolling mill by means of injector nozzles 10 in order thus to remove the oil and the metallic powder deposited on the said strip, then in loading the reeled cold-rolled strip into a box annealing furnace, in mixing water vapour with an atmospheric gas of the annealing furnace consisting principally of nitrogen and hydrogen and in adjusting the dew point of the gas inside the furnace between 0 and 10 DEG C. The present invention applies particularly to the field of metal rolling.

    METHOD FOR PRODUCING CLEAN COLD STRIP

    公开(公告)号:CA1212601A

    公开(公告)日:1986-10-14

    申请号:CA409784

    申请日:1982-08-19

    Abstract: METHOD FOR PRODUCING CLEAN COLD STRIP A clean cold strip is produced by injecting at a high pressure a rolling mill lubricant emulsion of a low concentration to both the sides of a strip at the last stand of a rolling mill, thereby removing oil and metal dust therefrom, charging the cold strip as rolled into a box annealing furnace, mixing water steam with an atmospheric gas of the annealing furnace consisting mainly of nitrogen and hydrogen, and adjusting the dew point of the gas within the furnace to 0 - 10.degree.C.

    Method for producing clean, cold-rolled strip

    公开(公告)号:FR2533467A1

    公开(公告)日:1984-03-30

    申请号:FR8216408

    申请日:1982-09-29

    Abstract: According to the invention, a lubricating rolling emulsion is injected, at high pressure and at a low concentration, on both sides of a strip 11 at the last stand 5 of a cold-rolling mill in order thus to remove spots such as oil or metallic powder from the surface of the strip, and the concentration of the lubricating emulsion is predetermined at 0.5-2.0%, its pressure at 49-196 bars and its flow rate at 20-150 l/min for 100 mm of width, of one side of the strip. The invention applies particularly to metallurgy.

Patent Agency Ranking