US3048182A - Apparatus for pickling wire or strip stock - Google Patents

Apparatus for pickling wire or strip stock Download PDF

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Publication number
US3048182A
US3048182A US729892A US72989258A US3048182A US 3048182 A US3048182 A US 3048182A US 729892 A US729892 A US 729892A US 72989258 A US72989258 A US 72989258A US 3048182 A US3048182 A US 3048182A
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Prior art keywords
strip
tower
stock
pickling
wire
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Expired - Lifetime
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US729892A
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English (en)
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Rutlner Othmar
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    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • C23G3/023—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by spraying

Definitions

  • FIG.1 APPARATUS FOR PICKLING WIRE OR STRIP STOCK Filed April 21, 1958 FIG.1
  • the known apparatus for pickling wire or strip stock are expensive and can often be operated only by specially skilled operators. In many cases these apparatus can be economically operated only above a minimum capacity, which cannot be achieved by smaller plants. Another disadvantage of the known apparatus is the large space requirement.
  • the tower is self-supporting and has a lining of acid-resisting bricks.
  • FIG. 1 is a cross-sectional view of the pickling plant
  • FIG. 2 is a fragmentary view in elevation of the upper reversing device
  • FIGS. 3 and 4 are views respectively of two other embodiments of an upper reversing device.
  • the strip or wire 2 to be treated is fed from a supply reel 1 by Way of a series of subsequently arranged auxiliary devices such as straightening rolls 2.0, a shear 21, a welder 22 and a cleaning plant 23 to the actual pickling plant 3.
  • This has the form of a tower. Any existing tower of any desired construction may be used for this purpose irrespective of the purpose for which it was used before.
  • the tower may consist of metal, plastic or masonry and is lined with acid-resisting bricks on the inside.
  • the tower is suitably gas-tight or substantially gas-tightly sealed towards the outside in order to enable the use of acid fumes within the tower.
  • the cover 7' of the tower is desirably removable and hinged.
  • Guide rollers 4 are arranged at the inlet'and outlet of the tower and reversing rollers 5 are arranged between said guide rollers and cooperate with upper reversing roller 6 in such a mannre that the reversing rollers 5 and 6 guide the strip or wire up and down along a winding course.
  • reversing rollers 5 and 6 guide the strip or wire up and down along a winding course.
  • any desired number of such rollers may be arranged in series to guide the strip-or wire repeatedly up and down and thus to prolong its residence time in the tower 3 or to enable a lower construction of the tower.
  • the following description will refer only to one upper reversing roller 6 and two lower ones 5. Where a larger number of reversing rollers are provided the measures which will be described hereinafter may readily be applied to the additional upper and lower reversing rollers, respectively.
  • the upper roller 6 may consist of two tapered half-rollers 6, 6", as is shown in FIG. 2. These half-rollers are laterally moved out of their operating position in the direction indicated by the arrows when the strip is introduced at the beginning of the pickling operation.
  • the taper of the rollers will enable an accurate guidance of the strip and prevent a lateral displacement of the strip during its movement through the tower.
  • the half rollers 6', 6 may be provided with lateral deflector discs 36 for safety reasons.
  • a travelling crab 10 is arranged on a frame 9 over the tower and is movable on rails. After the cover 7 has ben removed a gripper 30, a hoop or the like can be lowered from this travelling crab into the tower. With this construction the strip may be introduced at the beginning of the process by pulling the strip through in a horizontal direction below the lower reversing rollers 5, as is indicated in broken lines in FIG. 1. When the halfrollers 6, 6" are now laterally extended and the cover 7 is opened, the gripper 30 of the travelling crab 10, which has previously been moved over the desired point, may be lowered into the tower as far as to the strip.
  • the gripper 34 ⁇ holds suitably a carrier 31, which is passed below the strip, as shown in broken lines in FIG. 1, after the gripper has been lowered.
  • the gripper 30, which is suitably formed as a tongs, then grips the carrier 31 and is subsequently pulled up by the traveling crab 10 until the halfrollers 6, 6" can be moved under the strip, which forms a loop. At this time the travelling crab 10 will stop the upward movement of the gripper, the half-rollers 6, 6" are moved under the strip and finally the gripper 36 is lowered until the strip will be supported by the half-rollers 6', 6" when the carrier 31 is removed.
  • the vertical displacement of the reversing roller 6a serves mainly for pulling in the strip or wire at the. beginning of the process.
  • the roller 6a is lowered below the lower reversing rollers 5 so that the strip or wire can be pulled through between the rollers 5 in a horizontal direction, as indicated by the broken line in FIG. 1, just as in the previously described operation.
  • the roller 6a is then lifted to guide the strip or wire in the form of a loop.
  • the pickling liquor which is required for treating the strip or wire, is introduced in several levels by means of annular nozzles 11, which spray the pickling liquor on the strip from all sides.
  • the pickling liquor which is running down is collected in a collecting space 17 at the bottom of the tower 3 and is recycled to the nozzles .11 through a regenerating plant, not shown, and the conduit 39 by means of the pump 40.
  • the pump 4%) is shown directly connected to the space 17, for the sake of simplicity. It is understood that fresh acid must be added to compensate the consumption.
  • Photo-electric cells 41, 42, 43 are provided on various levels, in the present case in three tiers, in the tower 3. These photo-electric cells control the speed at which the strip or wire moves through the tower in dependence on the brightness of the strip or wire bypassing the photoelectric cells.
  • the photo-electric cells are adjusted to be non-responsive to a predetermined brightness of the strip passing by; in that case they will not actuate the control mechanism.
  • the brightness value to which the photoelectric cells are set decreases progressively from the lowermost tier to the uppermost one. Thus, the zero brightness for the cell 43 is higher than that for the cell 42 and that for the cell 42 is higher than that for the cell 41. If the strip is moving too fast through the tower so that it is not adequately pickled, its brightness will be lower than desired or prescribed.
  • the strip surface bypassing the lower cell 43 has a brightness below the zero setting of that cell.
  • the cell will influence the control mechanism so that the latter reduces the speed at which the strip is moving through the tower so that the strip will be exposed to the action of the acid for a longer time.
  • the regulation may be eifected in such a manner that the impulse delivered by the photoelectric cells varies the speed of the drive means for the wind-up reel 13 and for the wind-off reel 1. If the strip is moving too slowly through the tower the uppermost photo-electric cell 41 will be bypassed by a strip surface which is brighter than the adjusted zero brightness so that the photo-electric cell 41 responds and causes an acceleration of the strip.
  • an upward or downward movement of the upper reversing roller 6 may be employed to control the passage time of the strip or wire.
  • the roller 6 is continuously raised, more stock will enter the tower at the guide roller 4 than leaves the tower at the outlet guide roller so that the strip or wire will remain longer in the tower. This will be reversed if the roller 6 is lowered to reduce the stay time of the strip or wire in the tower.
  • roller 6 may also be used for storage purposes. If the roller 6 is in an elevated position it may be slowly lowered to maintain the movement of the strip through the pickling plant in the case of an interruption in the feeding of the strip, e.g. if the strip is to be welded in the welding plant 22. Overpickling could result if the strip were to remain stationary in the tower during the welding operation unless the supply of liquid was interrupted. Even if the supply of acid was interrupted the acid which adheres longer than necessary to the strip would deteriorate the strip surface.
  • Pans 5t? may be disposed below the lower reversing rollers 5 for collecting the pickling acid running down, which will then wet the lower bends of the strip.
  • the pickling acid flows from these pans into the tank 17. It is desirable that the pans 50 with their fixing means can be moved out of their operative position so that the strip to be pickled can be freely pulled through below the rollers 5 at the beginning of the process.
  • the strip or wire After having left the tower 3 the strip or wire is moved through rinsing devices 55, a drying plant 56 and a shear 57 to one of the two wind-up reels 13.
  • the provision of two wind-up reels has the advantage that when one reel is filled and the strip or wire has been cut the same can be immediately passed on to the second reel without need for an interruption of the movement of the strip or wire.
  • Two wind-off reels 1 may be provided for the same reason. In this case the second reel may be used as soon as the first reel has been emptied so that the operation can be continued without interruption. In the meantime, a full reel can be replaced for the empty one.
  • a cage 16 which can be moved like a lift, is provided for the operator or for the person in charge of the maintenance of the tower. Manholes, not shown, for repair purposes also provided in the wall of the tower.
  • the tower may form a self-supporting structure and is suitably provided with iron reinforcements. If the tower is gas-tight, warm to hot acid may be used. The fumes which develop contribute to a high degree to the pickling so that the operation can be performed more intensively and quickly and with a much smaller consumption of acid than with the known processes.
  • the acid which is used consists preferably of I-lCl or H
  • the tower may be constructed as a gas chamber, in which the acid fumes are under superatmospheric pressure to accelerate the pickling process.
  • the tower may have any desired height, e.g.,, meters. An entirely closed tower may also be used.
  • the tower may have the form of a chimney existing chimneys may be used for this purpose.
  • Apparatus for pickling wire and strip stock comprising a vertically elongated substantially gastight housing having an acid-resisting inside wall, upper and lower reversing rollers for guiding the stock to be pickled in a path vertically up and down through said housing, said upper reversing roller being temporarily movable out of an operable position in which the stock is engaged to an inoperable position out of the path of the stock, nozzles for spraying a pickling liquor on the stock, said housing being provided with entry and exit openings for the stock, said openings and said lower reversing rollers being so arranged that upon initial feeding of stock through the housing it extends effectively horizontally therethrough, and means on said housing for pulling the effectively horizontally extending stock vertically with respect to the housing to form a loop of sufiicient length, to reach the upper reversing roller to facilitate the threading of stock over the upper reversing roller.
  • said stock pulling means includes a crab movable on the upper portion of the housing, a gripper depending from the crab and movable vertically with respect thereto, and said gripper including means for engaging the stock which has been initially fed through the housing for pulling the stock toward the crab to form a loop of sui'licient length to reach the upper reversing roller.
  • Apparatus for pickling wire and strip stock comprising a vertically elongated substantially gastight housing having an acid-resisting inside wall, upper and lower reversing rollers for guiding the stock to be pickled vertically up and down through said housing, nozzles for spraying a pickling liquor on the stock, said housing being provided with entry and exit openings for the stock, said openings and said lower reversing rollers being so arranged that upon initial feeding of stock through the housing it extends effectively horizontally therethrough, said upper reversing roller being mounted for selective vertical movement between the upper portion of the housing and a lower position below the plane of the stock when it is initially fed through the housing, whereby said upper roller may be moved into its lower position before initial feeding of stock through the housing and moved to its upper position after such feeding to facilitate threading of the stock over said upper reversing roller.
  • Apparatus for pickling wire and strip stock comprising a vertically elongated, substantially gastight housing having an acid-resisting inside wall, upper and lower reversing rollers for guiding the stock to be pickled vertically up and down through said housing and thereby forming at least one elongated loop in the stock, means on the housing for initially gripping and drawing up the end of the stock to form the loop about said upper and lower reversing rollers, a cover on said housing forming a gastight seal with the housing when closed and when opened permitting the introduction through the top of the housing of said means, sets of vertically spaced nozzles for spraying a pickling liquor on the stock from all sides,
  • said nozzles being arranged throughout the length of the upwardly and downwardly moving portions of the stock, said housing being provided with openings in its lower portion through which the stock enters and leaves the housing thereby preventing the rising vapors of the pickling liquor from escaping, and means at the bottom of the housing for collecting the pickling liquor which runs down along the stock and for recycling the collected liquor through a regenerating plant to said nozzles.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
US729892A 1958-01-10 1958-04-21 Apparatus for pickling wire or strip stock Expired - Lifetime US3048182A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT18658A AT202831B (de) 1958-01-10 1958-01-10 Vorrichtung zum Beizen von draht- oder bandförmigem Material

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US3048182A true US3048182A (en) 1962-08-07

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US729892A Expired - Lifetime US3048182A (en) 1958-01-10 1958-04-21 Apparatus for pickling wire or strip stock

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US (1) US3048182A (lv)
AT (1) AT202831B (lv)
BE (1) BE567273A (lv)
DE (1) DE1130249B (lv)
FR (1) FR1205943A (lv)
GB (1) GB838261A (lv)
LU (1) LU35948A1 (lv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5803984A (en) * 1996-02-09 1998-09-08 Danieli Wean, A Division Of Danieli Corporation Method and apparatus for rinsing steel product

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1225943B (de) * 1958-03-31 1966-09-29 Peter Klaus Niedner Verfahren zur kontinuierlichen Oberflaechen-behandlung eines biegsamen Bandes und Vorrichtung zur Durchfuehrung des Verfahrens
DE1169757B (de) * 1959-06-18 1964-05-06 Beteiligungs & Patentverw Gmbh Kontinuierliche Bandbeizanlage
DE1228491B (de) * 1960-09-08 1966-11-10 Ing Othmar Ruthner Vorrichtung zum Beizen von band- oder drahtfoermigem Gut
US3445284A (en) * 1963-11-18 1969-05-20 Dravo Corp Process for pickling of steel strip and regeneration of the contact acid

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1976611A (en) * 1932-10-04 1934-10-09 Westinghouse Electric & Mfg Co Regulating system
US2018648A (en) * 1932-10-01 1935-10-22 James H Bell Apparatus for cleaning with solvents
US2104103A (en) * 1935-05-04 1938-01-04 Aluminium Lab Ltd Degreasing apparatus
US2216544A (en) * 1939-06-27 1940-10-01 Us Rubber Co Pickling tank
US2292511A (en) * 1941-07-10 1942-08-11 Crucible Steel Company Apparatus for handling metal strip
US2318419A (en) * 1940-10-31 1943-05-04 Youngstown Sheet And Tube Co Apparatus for coating metal strip or wire
US2366949A (en) * 1943-01-29 1945-01-09 Curtiss Wright Corp Degreasing apparatus
US2422651A (en) * 1943-12-31 1947-06-24 Carnegie Illinois Steel Corp Multiple loop control
US2578625A (en) * 1948-07-03 1951-12-11 Glens Falls Lab Inc Glossmeter
US2628924A (en) * 1947-07-05 1953-02-17 Nat Steel Corp Method of cleaning strip
US2649099A (en) * 1947-02-28 1953-08-18 Ernest L Huff Apparatus for treating continuous products
US2650599A (en) * 1948-12-15 1953-09-01 United States Steel Corp Continuous pickling apparatus
US2733999A (en) * 1956-02-07 Pickling

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE601656C (de) * 1932-11-11 1934-08-21 Claus Busse Dipl Ing Waschmaschine fuer gebeiztes band- oder drahtfoermiges Gut
DE810095C (de) * 1948-07-07 1951-08-06 Meusienne Const Mec Verfahren und Vorrichtung zur fortlaufenden Foerderung eines biegsamen Bandes aus festem Werkstoff, z. B. Metall, durch ein Bad oder eine Kammer

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733999A (en) * 1956-02-07 Pickling
US2018648A (en) * 1932-10-01 1935-10-22 James H Bell Apparatus for cleaning with solvents
US1976611A (en) * 1932-10-04 1934-10-09 Westinghouse Electric & Mfg Co Regulating system
US2104103A (en) * 1935-05-04 1938-01-04 Aluminium Lab Ltd Degreasing apparatus
US2216544A (en) * 1939-06-27 1940-10-01 Us Rubber Co Pickling tank
US2318419A (en) * 1940-10-31 1943-05-04 Youngstown Sheet And Tube Co Apparatus for coating metal strip or wire
US2292511A (en) * 1941-07-10 1942-08-11 Crucible Steel Company Apparatus for handling metal strip
US2366949A (en) * 1943-01-29 1945-01-09 Curtiss Wright Corp Degreasing apparatus
US2422651A (en) * 1943-12-31 1947-06-24 Carnegie Illinois Steel Corp Multiple loop control
US2649099A (en) * 1947-02-28 1953-08-18 Ernest L Huff Apparatus for treating continuous products
US2628924A (en) * 1947-07-05 1953-02-17 Nat Steel Corp Method of cleaning strip
US2578625A (en) * 1948-07-03 1951-12-11 Glens Falls Lab Inc Glossmeter
US2650599A (en) * 1948-12-15 1953-09-01 United States Steel Corp Continuous pickling apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5803984A (en) * 1996-02-09 1998-09-08 Danieli Wean, A Division Of Danieli Corporation Method and apparatus for rinsing steel product

Also Published As

Publication number Publication date
FR1205943A (fr) 1960-02-05
DE1130249B (de) 1962-05-24
GB838261A (en) 1960-06-22
BE567273A (lv)
AT202831B (de) 1959-04-10
LU35948A1 (lv)

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