US3362418A - Apparatus for hydraulically de-scaling ingots particularly hollow ingots - Google Patents

Apparatus for hydraulically de-scaling ingots particularly hollow ingots Download PDF

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Publication number
US3362418A
US3362418A US544910A US54491066A US3362418A US 3362418 A US3362418 A US 3362418A US 544910 A US544910 A US 544910A US 54491066 A US54491066 A US 54491066A US 3362418 A US3362418 A US 3362418A
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US
United States
Prior art keywords
ingots
cylinders
scaling
nozzle sets
pistons
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US544910A
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English (en)
Inventor
Herold Hans Wilhelm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Werner and Pfleiderer GmbH
Original Assignee
Werner and Pfleiderer GmbH
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Publication date
Application filed by Werner and Pfleiderer GmbH filed Critical Werner and Pfleiderer GmbH
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
    • B21J1/02—Preliminary treatment of metal stock without particular shaping, e.g. salvaging segregated zones, forging or pressing in the rough
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D29/00—Removing castings from moulds, not restricted to casting processes covered by a single main group; Removing cores; Handling ingots
    • B22D29/001—Removing cores
    • B22D29/006—Removing cores by abrasive, water or air blasting
    • 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

Definitions

  • This invention relates to an apparatus for hydraulically deescaling ingots and more particularly hollow ingots by means of pressure fluid issuing from nozzles, with suitable nozzle sets or batteries being associated with the surfaces to be de-scaled.
  • the Work-piece to be de-scaled is arranged in a closed housing and the surfaces to be de-scaled are successively sprayed by means of suitable nozzles so that the scale is removed.
  • the advantages oiered by de-scaling by means of pressure iluid can, however, with this prior known arrangement only be fully utilized with simple workpiece shapes, while, in the case of workpieces having surfaces to be de-scaled which are difficult to approach, such as, for example hollow ingots, disadvantages arise which can unfavorably iniluence not only the economy of the process, but also the quality of the material.
  • the object of the invention is to avoid the above disadvantages, While retaining all the advantages of hydraulic de-scaling and to provide an apparatus, which ensures the greatest possible economy with a most advantageous treatment of the workpiece with a smaller technical expenditure.
  • the individual cylinders vertically on their common support so that the individual nozzle sets or batteries are moved in opposite directions. If necessary, the movement of the individual nozzle sets or batteries can also be effected in the same direction. In this case, the couplings for the supply of the pressure fluid or the arrangement, of the individual cylinders must be chosen accordingly.
  • a connecting conduit In order to ensure a more certain or reliable charging of the individual nozzle sets or batteries with a pressure fluid, it is preferable to connect the pistons and/or the cylinders of the individual nozzle sets rigidly together at their ends by means 'of a connecting conduit.
  • the corresponding nozzle set or battery can then also be arranged in this connecting conduit and be formed, for example as a transverse stay, bridge piece or the like.
  • a control member may be associated with at least one of the nozzle sets or batteries, with such control member arresting the supply of pressure fluid to the nozzle sets, in a predetermined end position of the two sets and causing their return to their initial position.
  • control device only one control device is necessary for controlling the above apparatus and is provided with a control valve connected to the cylinders of one nozzle set or battery, with the valve effecting the supply -of the pressure duid which is switchable through a second control circuit thereby affording a disturbancefree operation and a simple servicing.
  • the use of a second control circuit for regulating the control valve per se is efficacious in that the highest pressures can easily be controlled and a supervision of the operation of the whole apparatus can be effected in a simple manner.
  • the nozzle sets or batteries together with their cylinders and pistons can be arranged in a common housing provided with an inlet opening, such as a swingable door for the ingot to be de-scaled, the inlet opening being preferably provided with a closing device, which, in the closed position, releases the supply of pressure fluid to the individual nozzle sets.
  • the closing device is connected to the second c-ontrol circuit, the apparatus can be automatically activated on the closing of the inlet opening and inactivated and returned to the rest position through the cont-rol member, operating at a predetermined end position of the two sets of nozzles and preferably also connected to the second control circuit.
  • FIGURE 1 is a sectional view of a de-scaling apparatus
  • FIGURE 2 a diagrammatic view of the connecting conduits of the apparatus shown in FIGURE 1,
  • FIGURE 3 is a horizontal sectional vieW illustrating the manner in which the closing device to the inlet open ing is operably attached to the housing.
  • a base plate 1 provided with vertical supporting members or stanchions 2 carries a plate 3 adapted to support individual cylinders 4, 5 and 6, 7 having pistons 4', 5', 6' and 7 displaceable therein.
  • the pistons are provided with extensions 4, 5", 6 and '7" respectively, which extend downwardly through suitably packed openings in the plate 3, and on the sides of which extensions are carried sets or batteries of nozzles 8 and 9 respectively.
  • the nozzle set or battery 8 is secured to a transverse stay 10 connecting the extensions 4 and 5" and the set is essentially a cylindrical member provided at its side facing the plate 3 with outlet openings 11 for the pressure fluid.
  • the nozzle set or battery 9 is, Ion the other hand, an annular member provided with outlet openings for the pressure fluid distributed over the periphery thereof and the member is carried at the lower ends of the extensions 6 and 7" .ofthe pistons 6, 7. i
  • a workpiece such as a hollow ingot 13 shown in dotdash lines in FIGURE 1 of the drawing, is de-scaled simultaneously externally and internally by the nozzle sets or batteries 8, 9, respectively while the pistons 4', 5', 6' and 7' are displaced from the position shown in FIG- URE 1 into the opposite position.
  • a piston 15, displaceable in a cylinder 14 connected to the plate 3 is moved downwardly and presses the hollow ingot on to the plate 12.
  • the supply of pressureizid to the individual cylinders 4, 5, 6, and 7 and the pistons 4', 5', 6 and '7' is effected through a control device 17 carried by a transverse member 16 connecting the cylinders 6 and 7 at their upper ends.
  • the device 17 includes a movable piston 18 and a valve 19, the ⁇ operation 'of which will be referred to hereafter.
  • the transverse member 16 has a bore 16" connecte-d with the nozzle set 9 through longitudinal bores in the pistons 6 and 7' and the bore 16 is connected through a branch 16' with the space containing the piston 18.
  • a control member 20 is arranged on one yof the stanchions 2 and cooperates with a valve 21 also carried by the same stanchion 2.
  • the cylinders 4, 5, 6, and 7 and the pistons 4', 5', 6', and 7' together with their conduits and control mem* bers are enclosed in a housing 22 shown in dot-dash lines in FIGURE 1 for the sake of clarity and constitute a portable unit which can, if necessary, carry an outlet 23 for the waste water.
  • the ⁇ outlet is arranged in a stationary sump 24.
  • a pneumatic valve 25 is actuated so that air flows through a conduit 26 connected to the pneumatic valve 25 into the cylinder ⁇ 14 and forces the piston 15 with an end pressure member on to the workpiece 13, and holds the workpiece in position.
  • the housing is of circular cross section and provided with a door 22' in the form of an arcuate flap in its lower part.
  • the Valve 25 is fixed to the housing adjacent the edge of the opening therein and is provided with a spring-loaded plunger 25' which is engaged when the flap is in the closed position by a projection 22" on the free edge of the flap.
  • the valve is spring-loaded so that the valve is normally closed and hence is closed except when the flap is closed.
  • the projection 22" engages the valve plunger and -depresses the same to open the valve.
  • the valve 25 is fed with pressure air through a further conduit 27, with an interconnected pressure gauge 28, and the valve 21 as well as conduit 21 leading from the valve 21 to the valve 25.
  • the conduit 26 is connected through a branch 30 with a valve 32 connected through a conduit 31 with a pressure container or the like for the pressure fluid.
  • the valve 32 operates a valve 32' at a predetermined pressure inthe conduit 26 and allows the valve 19 in the control device 17 to open since fluid flows through conduit 33 connected to the control device 17 and leads to the valve 32 and from valve 32' through the conduit 33'.
  • the control device 17 is connected at its side facing the valve 19 with a conduit 34 in which the same pressure prevails as in the conduit 31 as it is connected to the pressure container.
  • the pistons 4', 5', 6', and '7' are acted on by the pressure uid and are displaced in their cylinders 4, 5, 6, and 7 upwardly and downwardly respectively.
  • the pistons 4' and 5' are displaced upwardly with the nozzle set 8, while the pistons 6' and 7' are moved downwardly with the nozzle set 9.
  • the cylinders 4 and 5 are connected at their ends remote from the extensions 4" and 5" by conduit portions 36a and 36b to a common conduit 36 connected to a throttle by-pass return valve 37 through which the speed of movement of the nozzle set 8 can be regulated continuously or in stages in depending on the instant pressure of the pressure fluid.
  • the cylinder spaces 6 and 7 are connected through branch conduit portions 38a and 3Sb to a common conduit 38, which, leads to a second throttle by-pass return valve 39 for controlling continuously, or in stages, the speed of movement of the nozzle set 9.
  • both conduits 36 and 38 can also lead to a common throttle by-pass return valve, or the two valves can be suitably coupled so that the movement of the nozzle sets 8 and 9 can also be controlled together.
  • the arrangement of separate throttle by-pass return valves 37, 39 enables a varied adjustment of the prevailing operating conditions.
  • control member 21 is moved through means (not shown) back into its initial position, s0 that the described sequence of operations can be initiated anew by the closing of the inlet opening.
  • the feeding of the apparatus with pressure iiuid can be effected through a conduit 40 which opens into the conduit 31, While the supply of fresh fluid is effected through a conduit 41.
  • An apparatus for hydraulically de-scaling ingots and more particularly hollow ingots comprising a supporting plate, at least two pairs of cylinders arranged on said plate, a pair of pistons displaceable in the same direction in each pair of cylinders, a nozzle set operably connected to each pair of pistons and movable in opposite directions, means .for supporting Ian ingot to be descaled in operative relationship to said nozzle sets, a source of pressure uid, conduit means between said source of pressure fluid and said cylinders and nozzle sets, and means for supplying said pressure fluid into said nozzle sets via said cylinders and said conduit means whereby said pistons are simultaneously displaceable together with said nozzle sets upon the issuance of pressure fluid from said nozzle sets.
  • the apparatus for hydraulically de-scaling ingots as claimed in claim 1 including a common control device operably related with all said cylinders.
  • the apparatus for hydraulically de-scaling ingots as claimed in claim 1 including means whereby said nozzle sets are movable in opposite -directions at the same speed.
  • the apparatus for hydraulically de-scaling ingotsV as claimed in claim 1 including a conduit rigidly connecting the cylinders of the nozzle sets together at one end thereof.
  • the apparatus for hydraulically de-scaling ingots as claimed in claim 1 including a control member operably related with at least one of said nozzle sets for arresting the supply of pressure iluid in a predetermined end position of said nozzle sets for causing the return of such sets to their starting position.
  • the apparatus for hydraulically de-scaling ingots as claimed in claim 1 including a control device provided With a valve operably connected to the cylinders of one nozzle set, a second control conduit operated by said valve for effecting the supply of pressure fluid therethrough.
  • the apparatus for hydraulically de-scaling ingots as claimed in claim 1 including a common housingvfor said supporting plate cylinders and nozzle sets, and said common housing having an inlet Opening for the ingot to be de-scaled.
  • the apparatus for hydraulically de-scaling ingots as claimed in claim 7 including a closing device for said inlet opening which closing device in the closed position releases the supply of pressure uid via the conduit means to said nozzle sets.
  • the apparatus for hydraulically de-scaling ingots as claimed in claim 8 including a control member operably connected to said inlet opening so that said control member is moved into an initial position on the opening of said inlet opening.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Branch Pipes, Bends, And The Like (AREA)
US544910A 1965-04-28 1966-04-25 Apparatus for hydraulically de-scaling ingots particularly hollow ingots Expired - Lifetime US3362418A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW0039061 1965-04-28

Publications (1)

Publication Number Publication Date
US3362418A true US3362418A (en) 1968-01-09

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US544910A Expired - Lifetime US3362418A (en) 1965-04-28 1966-04-25 Apparatus for hydraulically de-scaling ingots particularly hollow ingots

Country Status (9)

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US (1) US3362418A (de)
AT (1) AT263681B (de)
BE (1) BE680246A (de)
DE (1) DE1452163A1 (de)
ES (1) ES325405A1 (de)
GB (1) GB1071837A (de)
LU (1) LU50684A1 (de)
NL (1) NL6603681A (de)
SE (1) SE318457B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688782A (en) * 1970-08-17 1972-09-05 Charles E Smith Washing apparatus for hollow containers
US3984254A (en) * 1974-04-26 1976-10-05 Adolf Moritsovich Alexandrov Machine for washing pneumatic conveyance containers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE158729T1 (de) * 1992-07-31 1997-10-15 Danieli Off Mecc Wasser verwendende entzunderungsvorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1364706A (en) * 1919-01-23 1921-01-04 Tracy V Buckwalter Apparatus for chilling bearings
DE504866C (de) * 1928-07-22 1930-08-08 Maschf Augsburg Nuernberg Ag Gussputzanlage
US1933412A (en) * 1933-04-11 1933-10-31 Charles J Brown Spraying device for hot rod mill reels
US2690756A (en) * 1952-12-09 1954-10-05 Palley Zoltan O St Apparatus for cleaning pipe lines
FR1087901A (fr) * 1953-08-07 1955-03-01 Appareil à douches
US3023756A (en) * 1959-10-05 1962-03-06 Commercial Shearing Ingot descaling mechanisms

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1364706A (en) * 1919-01-23 1921-01-04 Tracy V Buckwalter Apparatus for chilling bearings
DE504866C (de) * 1928-07-22 1930-08-08 Maschf Augsburg Nuernberg Ag Gussputzanlage
US1933412A (en) * 1933-04-11 1933-10-31 Charles J Brown Spraying device for hot rod mill reels
US2690756A (en) * 1952-12-09 1954-10-05 Palley Zoltan O St Apparatus for cleaning pipe lines
FR1087901A (fr) * 1953-08-07 1955-03-01 Appareil à douches
US3023756A (en) * 1959-10-05 1962-03-06 Commercial Shearing Ingot descaling mechanisms

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688782A (en) * 1970-08-17 1972-09-05 Charles E Smith Washing apparatus for hollow containers
US3984254A (en) * 1974-04-26 1976-10-05 Adolf Moritsovich Alexandrov Machine for washing pneumatic conveyance containers

Also Published As

Publication number Publication date
GB1071837A (en) 1967-06-14
LU50684A1 (de) 1966-05-17
DE1452163A1 (de) 1968-12-05
NL6603681A (de) 1966-10-31
BE680246A (de) 1966-10-03
ES325405A1 (es) 1967-02-16
SE318457B (de) 1969-12-08
AT263681B (de) 1968-07-25

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