US3726119A - Rolling mills - Google Patents

Rolling mills Download PDF

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Publication number
US3726119A
US3726119A US00133970A US3726119DA US3726119A US 3726119 A US3726119 A US 3726119A US 00133970 A US00133970 A US 00133970A US 3726119D A US3726119D A US 3726119DA US 3726119 A US3726119 A US 3726119A
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US
United States
Prior art keywords
rollers
row
stands
roller
stage
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
US00133970A
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English (en)
Inventor
A Bindernagel
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Individual
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Individual
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Filing date
Publication date
Priority claimed from DE19702018157 external-priority patent/DE2018157C3/de
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3726119A publication Critical patent/US3726119A/en
Assigned to BINDERNAGEL, ALI reassignment BINDERNAGEL, ALI ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: FRIEDRICH KOCKS GMBH & CO.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/14—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling without mandrel, e.g. stretch-reducing mills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • B21B13/10—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane
    • B21B13/103—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process all axes being arranged in one plane for rolling bars, rods or wire

Definitions

  • the invention relates to a multi-stand rolling mill having at least two interchangeable rows of rolling stands having non-adjustable rollers, and to a method of utilizing the rollers several times in such a rolling mill by refinishing the worn rollers.
  • the worn rollers which have been made usable again by reconditioning, and whose diameters have consequently been changed, are fitted into still centrally drivable interchangeable stands having an intermediate drive mechanism adapted to the changed diameters of the rollers.
  • the interchangeable stands With appropriate choice of the interchangeable stands, the refinished rollers can be used several times in the rolling mill at the same stand location or at different places. In this method, in which the rollers are reused frequently and may be utilized to good advantage, the rollers have to be removed from the stand and fitted into the interchangeable stand each time the rollers are exchanged.
  • rollers in a row of roller stands having non-adjustable rollers, it has also been proposed to progressively transfer the rollers from the delivery end of the rolling line to the input end through the row of rolling stands, the nominal diameter of the rollers remaining constant or being only slightly changed each time the rollers are refinished.
  • the rollers do not have to be removed from the individual stands, but, after refinishing, which is effected in the stand, they are placed in the prescribed position in the row together with the entire stand.
  • Two identical rows of stands are usually provided in order to shorten the waiting times when the rollers are exchanged, one of which rows is located in the rolling line, while the other row is being prepared for the rolling operation, and is exchanged for the row located in the rolling line by means of a change-over carriage when the rollers in the rolling line have been worn to a specific degree.
  • the rollers cannot be used again after a single pass through one of other of the rows of stands.
  • the present invention seeks to combine the ad vantages of the two above-mentioned methods and to largely eliminate the disadvantages of said methods.
  • a multi-stand rolling mill comprises at least two interchangeable rows of roller stands having non-adjustable rollers, the distances between roller axes in the individual rows being uniform or differ only slightly from one another and the distances between axes from row to row being different.
  • the rollers in the first instance progress from the delivery end to the input end through the roll line having the greatest distances between axes, the worn rollers being refinished with the retention of the nominal or idea] diameter.
  • the ideal diameter of rollers is reduced after progressing through one row and the rollers are then progressed through the row having the lesser distances between roller axes, the work rollers then being refinished with the retention of the new ideal diameter.
  • the rollers may progress through the same stage or station in the rolling line several times owing to the reducing distances between roller axes in the rows of roller stands and, with the exception of the change to the row having the lesser distances between axes, do not have to be removed from their stand.
  • FIG. 1 is a diagrammatic illustration of two interchangeable lines of roller stands
  • FIG. 2 shows the portion of a roller illustrating the individual refinishing stages.
  • FIG. 1 two interchangeable rows 10 and 12 of rolling stands are provided.
  • the row 10 is located in the rolling line, the rolling direction being indicated in the drawing by the arrow 14.
  • the row 12 has been removed from the rolling line for servicing by means of a stand exchange carriage before installing the row 10 and is located at an assembly place where the worn rollers are refinished and the stands are transposed within the row.
  • the row 10 of stands is replaced by the row 12, and vice versa.
  • Each of the diagrammatically illustrated rows 10 and 12 of stands which are part of a wire rolling mill for example, comprises eight stands 16 or 16' which are arranged in positions 1 to 8 in the row 10 and in positions 1 to 8' in the row 12.
  • Each of the stands 16 and 16 contains three disc-like rollers which form the pass, one of which rollers is illustrated diagrammatically in a simplified form in FIG. 2.
  • the distances between the roller axes in the stands of the two rows are not adjustable and are uniform within each row, but differ from one another from one row to the other. In the present example, the distance between the roller axes in the stands 16 of the row 10 is greater than in the stands 16' of the row 12. Rollers, as illus trated in FIG. 2, having an ideal diameter D having to be fitted into the stands 16 of the row 10, and rollers having an ideal diameter D having to be fitted into the stands 16' of the row 12.
  • the peripheral speeds of the rollers of different diameters in the different rows can be equalized by appropriately modified gear ratios.
  • the refinishing stages 1 to 8 and 1' to 8 shown on the disc-like roller in FIG. 2 are associated with the stand positions indicated by the same numerals in the rows 10 and 12.
  • the fresh rollers are first of all installed in the stand which is located at the delivery end of the row 10 and which is indicated by position 1 in FIG. 1.
  • rollers which have passed through the second row 12 are scrapped or may pass through a third row (not illustrated in the drawings) with a further reduced ideal diameter.
  • roller stands having rollers journalled therein for rotation about non-adjustable roller axes, said roller stands being arranged in at least two interchangeable rows of successive roller stands, each row on a base, a selected one of said rows being movable to an operative position in a rolling line, the distances between said roller axes in the stands in any individual one of said rows being substantially uniform from one stand to another, and the distances between said roller axes being different from one row to another.
  • a method of re-utilizing said rollers comprising the steps of using rollers of a first nominal diameter in the first instance'in a roller stand at a final rolling stage at the delivery end of a first of said rows, transferring the rollers to a preceding rolling stage and re-finishing the rollers, using the rollers at said preceding stage, removing worn rollers from the initial stage at the input end of said first row, remachining the worn rollers to a second nominal diameter smaller than the first nominal diameter, using the rollers of the second nominal diameter in the first instance in a roller stand at a final rolling stage at the delivery end of a second of said rows, the spacing between the axes of the rollers in stands of the second row

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
US00133970A 1970-04-16 1971-04-14 Rolling mills Expired - Lifetime US3726119A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702018157 DE2018157C3 (de) 1968-05-02 1970-04-16 Mehrgerüstiges Universalwalzwerk, insbesondere Drahtwalzwerk mit drei Walzen pro Gerüst

Publications (1)

Publication Number Publication Date
US3726119A true US3726119A (en) 1973-04-10

Family

ID=5768197

Family Applications (1)

Application Number Title Priority Date Filing Date
US00133970A Expired - Lifetime US3726119A (en) 1970-04-16 1971-04-14 Rolling mills

Country Status (3)

Country Link
US (1) US3726119A (enrdf_load_stackoverflow)
JP (1) JPS533337B1 (enrdf_load_stackoverflow)
GB (1) GB1348579A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022049A (en) * 1974-08-29 1977-05-10 Firma Friedrich Kocks Rolling mills
FR2447235A1 (fr) * 1979-01-29 1980-08-22 Kocks Gmbh Friedrich Train de laminoirs pour le laminage de fils metalliques ou de barres
US4599883A (en) * 1985-07-05 1986-07-15 Wean United, Inc. Tandem rolling mill

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1810167A (en) * 1929-04-10 1931-06-16 Morgan Construction Co Art of rolling metal
US1833376A (en) * 1930-10-29 1931-11-24 Ira J Simmons Rolling mill
US3355923A (en) * 1963-07-25 1967-12-05 Soc D Const De Montbard Sa Rolling mill of the reducing type

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1810167A (en) * 1929-04-10 1931-06-16 Morgan Construction Co Art of rolling metal
US1833376A (en) * 1930-10-29 1931-11-24 Ira J Simmons Rolling mill
US3355923A (en) * 1963-07-25 1967-12-05 Soc D Const De Montbard Sa Rolling mill of the reducing type

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022049A (en) * 1974-08-29 1977-05-10 Firma Friedrich Kocks Rolling mills
FR2447235A1 (fr) * 1979-01-29 1980-08-22 Kocks Gmbh Friedrich Train de laminoirs pour le laminage de fils metalliques ou de barres
US4308740A (en) * 1979-01-29 1982-01-05 Kocks Technik Gmbh & Co. Rolling lines for the rolling of wire or rods
US4599883A (en) * 1985-07-05 1986-07-15 Wean United, Inc. Tandem rolling mill

Also Published As

Publication number Publication date
GB1348579A (en) 1974-03-20
JPS533337B1 (enrdf_load_stackoverflow) 1978-02-06

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Legal Events

Date Code Title Description
AS Assignment

Owner name: BINDERNAGEL, ALI, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FRIEDRICH KOCKS GMBH & CO.;REEL/FRAME:003913/0324

Effective date: 19810515

Owner name: BINDERNAGEL,ALI. 5632 WERMELSKIRCHEN,OBERWINKELHAU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:FRIEDRICH KOCKS GMBH & CO.;REEL/FRAME:003913/0324

Effective date: 19810515