US3172312A - Arrangement of rolling mills - Google Patents

Arrangement of rolling mills Download PDF

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Publication number
US3172312A
US3172312A US155076A US15507661A US3172312A US 3172312 A US3172312 A US 3172312A US 155076 A US155076 A US 155076A US 15507661 A US15507661 A US 15507661A US 3172312 A US3172312 A US 3172312A
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United States
Prior art keywords
looping
rolling
loop
arrangement
roll
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Expired - Lifetime
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US155076A
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English (en)
Inventor
Jansson Karl Elis
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MORGARDSHAMMARS MEK VERKSTADS AB
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Morgardshammars Mek Verkst Sa
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B41/00—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters
    • B21B41/08—Guiding, conveying, or accumulating easily-flexible work, e.g. wire, sheet metal bands, in loops or curves; Loop lifters without overall change in the general direction of movement of the work

Definitions

  • Wire trains of the said type are previously known, the roll pairs being arranged perpendicularly to the main direction of the hot rolling material in the train.
  • the loops formed between the roll pairs are given a certain size and shape.
  • Said size and shape of the looping are to some extent subject to further control by return or guide pulleys arranged along the path of the hot rolling material. Threaded into such a pair of rolls, the hot rolling material runs straight between the roll pairs, but forms already after a few seconds a loop having on the looping table a shape which may he called three-curved, i.e.
  • This disadvantage can be eliminated by subjecting the loop to adjusting, in such a manner, that between the roll pairs at the end of the hot rolling material the loop is stretched.
  • the stretching is carried out by an operator who increases the speed of the preceding roll pair when he observes approach of the last portion of the hot material.
  • the said adjustment is quite fortuitous. As this decision by the operator, moreover, has to be taken within a few tenths of a second, one cannot expect it to be correct at all times. Consequently, sometimes cracker formation will occur or the hot material will be stretched somewhat too much. In the latter case, the hot material will undergo undesirable reduction in dimension.
  • the conventional straight continuous rolling mill require a considerable construction length, in view of the space needed for the curves of the loop and the guide "ice rollers with associated equipment.
  • the same problem is found in another conventional continuous rolling mill for high speed rolling where the hot material is subjected to curving by 180 degrees between the roll pairs.
  • this rolling mill the roll pairs are placed in staggered arrangement relative one another in order to facilitate their access for roll exchange and adjustment. Such arrangement results, of course, in greater space requirement.
  • the invention is substantially characterized in that the roll pairs are placed more or less angularly to follow the loop shape.
  • the roll pairs are placed at such an angle to the substantially straight main direction of the hot rolling material, that the loop between two subsequent roll pairs forms one curve.
  • the roll pairs according to this invention may be said to be placed in the inflection points of the loop obtained previously.
  • the first and third curves of the threecurved loop formed in said rolling mills are eliminated.
  • FIG. 1 of which shows in a schematic manner the arrangement of a rolling mill according to the invention, com rising alternating vertical and horizontal roll pairs,
  • FIG. 2 shows a rolling mill comprising only horizontal roll pairs
  • FIG. 3 is an enlarged detail view of the arrangement in FIG. 1.
  • the wire arrives from a pair of conventional roll pairs 3 and 4 via a loop 5 at the first vertical pair 6 in train 1. Said pair is placed such, that the connecting line between theroll axes extends perpendicular to the loop path in the inflection point formed by the wave line 7 (11-2).
  • the drive and gear means are placed beneath the roll pair.
  • the hot material continues from roll pair 6 out to a looping table 8 which guides with its rear wall the hot material along a uniform curve into the following roll pair 9. Even this roll pair is placed angularly in rela-' tion to the main direction of the hot material.
  • the roll axes of this pair are horizontal and arranged perpendicularly to the loop in the inflection point.
  • the wire When the wire is rolled to desired dimension in said two roll pairs 6 and 9, it is taken out and coiled, as shown in schematic manner at 10, 10a and 10b, on coiling reels 11 and 13, respectively. If, however, the wire must be rolled down still more, it is threaded into the roll pairs 14, 15 via the loops 7b and 70, respectively.
  • the wire may be taken out of t e roll pair 15 in like manner as de. scribed above, or it may continue via the roll pairs 16 and 17 to the coiling reel 11 or 12.
  • FIG. 2 shows in a schematic manner a wire rolling mill with continuous trains 21 and 22 in a wave line comprising only horizontal roll pairs. As the trains are identical in principle, it is only referred to one of them.
  • the wire 23 is threaded into the roll pair 24 and led out onto a looping table in like manner as in FIG. 1.
  • the hot material is led out to a looping table 25 of greater size and thereafter threaded into the roll pair 27.
  • the greater size of looping table 26 is due to the greater space requirement of the drive and gear means 28 and 29.
  • the arrangement of only horizontal roll pairs renders it thus necessary to provide for more space. In this case, space must be provided even for the twisting means between the roll pairs, which space can be provided according to this invention.
  • the rolling in general, is carried out in a manner analogous to FIG. 1.
  • the hot material is threaded from the looping table 35 into the horizontal roll pairs 39 with funnelshaped entry guide 40 and discharge guide 41 whereafter it continues to the next looping table 42.
  • the hot material follows the rear wall 36 of the looping table 35 and is threaded into the entry guide 40 with considerable force, which force is due to the better support imparted to the hot material by the new, simpler loop shape and the looping table designed in accordance therewith.
  • control means not shown the loop formed is then kept at a suitable distance from the wall.
  • the rear wall 36 of the looping table is shaped one-curved, the curve comprising substantially three circular arcs, namely a first arc with the radius R a second arc with the radius r, and a third are with the radius R R and R are considerably greater than r.
  • R 2 12 :6 2'.
  • the end portion When the last end portion of the hot material is to pass through the looping table, the end portion will follow the rear wall 36 and be given a stable run all the way to the entry guide 40 without having the possibiity of forming a cracker.
  • the invention includes several advantages over the described prior state of art.
  • the guide rollers, for example, needed for the previously known loops are now superfluous due to the invention which, in general, renders possible simplified rolling material by 180 degrees.
  • the threading process has gained in safety which also applies to the last mentioned case. After its curving by 180 degrees, the hot material must be advanced to the next pair in a tube, which advancing is in stable and may cause troubles.
  • the looping tables comprise outer and inner stationary flanges rigidly connected with a bottom'part to hold the loop between said flanges, said flanges being arranged at a distance from each other which is sufliciently great for outer stationary flange which is curved in one direction only, when the last end is released from the foregoing stand and follows said flange to avoid double folding of the last end.
  • each said looping table is located intermediate adjacent roll stands one of which is comprised of a pair of vertical rolls and the other of which is comprised of a pair or" horizontal rolls, and the rolled material undergoes substantialy a 90 change in direction on said looping table in passing between said adjacent roll stands, the outer flange of said looping table being comprised of a central and two end sections all of which are curved to establish a continuous curved wall of different radii of curvature, the radius of curvature of said curved end sections being considerably greater than the radius of curvature of said curved central section.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)
US155076A 1960-12-08 1961-11-27 Arrangement of rolling mills Expired - Lifetime US3172312A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1189960 1960-12-08

Publications (1)

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US3172312A true US3172312A (en) 1965-03-09

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US155076A Expired - Lifetime US3172312A (en) 1960-12-08 1961-11-27 Arrangement of rolling mills

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US (1) US3172312A (US20020095090A1-20020718-M00002.png)
AT (1) AT238671B (US20020095090A1-20020718-M00002.png)
BE (1) BE611242A (US20020095090A1-20020718-M00002.png)
DK (1) DK103290C (US20020095090A1-20020718-M00002.png)
FI (1) FI40001C (US20020095090A1-20020718-M00002.png)
FR (1) FR1307612A (US20020095090A1-20020718-M00002.png)
GB (1) GB1006220A (US20020095090A1-20020718-M00002.png)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189810452A (en) * 1898-05-07 1899-03-04 Thomas William Walker Improvements in or connected with Rolling Mills for Bars, Rods, and Wire.
GB190716260A (en) * 1907-07-15 1908-07-15 Joseph Phillips Bedson Improvements relating to the Rolling of Metal Rods.
US1752841A (en) * 1925-05-16 1930-04-01 Morgan Construction Co Looping trough for rolling mills
DE934462C (de) * 1954-07-05 1955-10-27 Schloemann Ag Walzenstrasse fuer das kontinuierliche Auswalzen von Feineisen
FR1125662A (fr) * 1954-06-21 1956-11-05 Schloemann Ag Train de laminoir à plusieurs brins pour le laminage continu de fers de petit calibre ou similaires
US3122949A (en) * 1964-03-03 Machines for the continuous simultaneous-rolling

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3122949A (en) * 1964-03-03 Machines for the continuous simultaneous-rolling
GB189810452A (en) * 1898-05-07 1899-03-04 Thomas William Walker Improvements in or connected with Rolling Mills for Bars, Rods, and Wire.
GB190716260A (en) * 1907-07-15 1908-07-15 Joseph Phillips Bedson Improvements relating to the Rolling of Metal Rods.
US1752841A (en) * 1925-05-16 1930-04-01 Morgan Construction Co Looping trough for rolling mills
FR1125662A (fr) * 1954-06-21 1956-11-05 Schloemann Ag Train de laminoir à plusieurs brins pour le laminage continu de fers de petit calibre ou similaires
DE934462C (de) * 1954-07-05 1955-10-27 Schloemann Ag Walzenstrasse fuer das kontinuierliche Auswalzen von Feineisen

Also Published As

Publication number Publication date
FR1307612A (fr) 1962-10-26
DK103290C (da) 1965-12-13
GB1006220A (en) 1965-09-29
FI40001B (US20020095090A1-20020718-M00002.png) 1968-05-31
BE611242A (fr) 1962-03-30
FI40001C (fi) 1968-09-10
AT238671B (de) 1965-02-25

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