Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B22—CASTING; POWDER METALLURGY
  • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
  • B22D5/00—Machines or plants for pig or like casting
  • B22D5/005—Devices for stacking pigs; Pigforms to be stacked

Definitions

• the invention relates to a method and a device for continuously obtaining, from a non-ferrous metal blank from a continuous casting machine on a grooved wheel, ingots of constant cross section and having bosses at their ends. suitable for making self-blocking stacks.
• ingots having hollow and / or raised portions on one or more of their faces can be produced from molds of suitable shape, in order to prevent any relative movement of the ingots with respect to each other when they are assembled in the form of stacks and thus making their transport convenient.
• the process according to the invention consists, in a known manner, in casting a blank on a grooved wheel temporarily closed by a ribbon and in periodically making this blank integral with a device responsible for sharing it in ingots, but it is characterized in that that the blank is first pinched progressively on its lateral faces in order to form imprints there and to develop at least one boss on at least one of the other faces, then sheared in line with the imprints.
• the method implements, as raw material, a blank from a casting machine on a grooved wheel temporarily closed by a ribbon to form a mold with movable walls.
• the preform leaving the casting machine is first brought in a horizontal direction to be threaded between the cylinders of a straightener which gives it a suitable straightness, then it engages in the device responsible for sharing it in ingots.
• This device is fixed by a mobile carriage which includes means for making it integral with the blank.
• the preform drives the carriage with the wing, which allows the device to move synchronously with the preform and to exercise its sharing action on a determined section of the latter.
• the blank is first of all progressively pinched on its lateral faces by the dis positive so as to form fingerprints there and to develop on at least one of the other faces, at least one boss.
• imprints are preferably symmetrical with respect to a vertical plane passing through the axis of the blank and they more or less follow the slope of the lateral faces.
• the depth of these indentations can vary depending on the nature of the product or the shape of the blank.
• the bosses which develop on the lower and / or upper face of the blank appear on a cut to the right of the imprints as two nipples separated by a hollow; these nipples dominate the plane of these faces with a height which can be of the order of 1/10 of the height of the blank and join this face according to a convex curve.
• the blank is cut in a plane perpendicular or oblique to its axis, to the right of the imprints, that is to say so as to share the bosses by their median plane.
• Each ingot thus obtained has, in the longitudinal direction, a projecting profile at each of its ends which constitutes the means of making it self-locking in a conventional stacking system.
• each ingot is taken up by a processing chain in which ori forms sheets where one ingot out of two can be turned over in order to bring its lateral faces into close contact with the neighboring ingot; then, the different layers are superimposed successively in the long direction and in the cross direction so as to constitute stacks.
• the present invention also relates to a device making it possible to implement the method described above.
• This device is characterized in that it comprises, connected to the mobile carriage, two jaws placed opposite the lateral faces of the blank and intended to form the impressions and a knife responsible for shearing the blank on at least one part. of its section to the law of the prints.
• These jaws are schematically made up of a right prism of triangular section surmounted by a trihedron whose base has the same section as the prism. They are in relation to the lateral uprights of the carriage by one of their faces while the other two free faces intersect along an edge contained in a vertical plane perpendicular or oblique to the axis of movement of the blank.
• each jaw In general, the height of each jaw is close to the height of the blank so that the impression is made from top to bottom of the lateral surfaces. Associated with these jaws, there is a knife fixed on the carriage and whose cutting edge is placed in line with the edges of the jaws. At rest, the edge of the knife is placed slightly back from the roughing pass line.
• the movement of the carriage, the jaws and the knife are automatically controlled according to a sequence comprising the following stages: the carriage being in the rest position, the blank pushed by the straightener runs between the elements of the device. At the moment when the length of the blank corresponding to that of the ingots which it is desired to obtain has passed in line with the jaws, the carriage is made integral with the blank by any means and is driven at the same speed as the draft.
• This movement of joining involves the starting of the jaws which come to be applied on the side-lines of the blank to gradually sink and mark these faces with their imprint. As soon as these imprints have reached the desired depth, the jaws quickly withdraw while the knife progressively shears the blank over at least part of its section.
• Figure 1 shows a possible casting installation equipped with the carriage-device assembly according to the invention.
• Figure 2 is a section perpendicular to its axis of movement of the carriage-device assembly.
• Figure 3 shows in perspective one end of the ingot obtained according to the method of the invention.
• FIG. 4 represents an assembly of self-locking ingots according to the invention.
• FIG. 1 one can see a continuous casting machine with a grooved wheel of the four-wheel type comprising the actual casting wheel 1, the three auxiliary wheels 2, 3, 4 and the ribbon 5.
• the liquid metal is introduced into the following machine 6 and comes out at 7 in the form of a blank 8.
• This blank is brought into a straightening machine 9 then to a mobile carriage 10 equipped with the jaws and the knife.
• Figure 2 is a section perpendicular to its axis will move from the carriage-device assembly where we can distinguish, on the one hand, connected to each of the uprights 11, the jaws 12 and the knife 13 with its cutting edge 14 placed at the lower part of the carriage, and, on the other hand, the blank 8 to share.
• Figure 3 is a perspective view of an ingot end showing the bosses 15 which allow the ingot to be blocked between them.
• FIG. 4 represents an assembly of self-locking ingots according to the invention.
• the present invention finds its application in particular in the aluminum industry, in all cases where it is sought, starting from a continuously cast product, to obtain ingots having a constant section, a known length and suitable for self-locking stacking.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Continuous Casting (AREA)
• Shearing Machines (AREA)
• Metal Rolling (AREA)
• Forging (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9241681

Family Applications (1)

Country Status (13)

Cited By (1)

Citations (4)

Family Cites Families (7)

• 1980
  • 1980-04-28 FR FR8010116A patent/FR2481161A1/fr active Granted
• 1981
  • 1981-04-21 GR GR64765A patent/GR73149B/el unknown
  • 1981-04-22 CA CA000375953A patent/CA1154571A/fr not_active Expired
  • 1981-04-22 IT IT21320/81A patent/IT1137152B/it active
  • 1981-04-24 AU AU70706/81A patent/AU544142B2/en not_active Ceased
  • 1981-04-24 JP JP56501287A patent/JPS615822B2/ja not_active Expired
  • 1981-04-24 US US06/325,433 patent/US4518028A/en not_active Expired - Fee Related
  • 1981-04-24 EP EP81900965A patent/EP0050626B1/fr not_active Expired
  • 1981-04-24 DE DE8181900965T patent/DE3161576D1/de not_active Expired
  • 1981-04-24 BE BE0/204598A patent/BE888552A/fr not_active IP Right Cessation
  • 1981-04-24 WO PCT/FR1981/000055 patent/WO1981003135A1/fr not_active Ceased
  • 1981-04-27 ES ES501656A patent/ES8207001A1/es not_active Expired
  • 1981-04-27 ES ES1981267200U patent/ES267200Y/es not_active Expired
  • 1981-04-27 IE IE934/81A patent/IE50875B1/en unknown

Patent Citations (4)

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