CH342063A

CH342063A - Device for rapid hot tinning of a metal wire, in particular a copper wire

Info

Publication number: CH342063A
Authority: CH
Inventors: Haugwitz Otto
Original assignee: Delore Sa Geoffroy
Priority date: 1956-12-04
Filing date: 1957-11-29
Publication date: 1959-10-31

Description

Dispositif d'etamage ä chaud rapide d'un fil metallique, notamment d'un fil de cuivre Un dispositif d'etamage ä chaud pour fil metal- lique comporte generalement en succession un bäti de depart, un bac de decapage, un bac ä etamer, un poste d'essuyage, un bac de refroidissement et un poste de reception. Device for rapid hot tinning of a metal wire, in particular a copper wire A hot tinning device for metal wire generally comprises in succession a starting frame, a pickling tank, a tinning tank , a wiping station, a cooling tank and a receiving station.

Dann les dispositifs de type connu, 1e fil plonge dann les differents bacs en etant guide par un certain nombre de poülies de renvoi freinant fortement 1e fil du fait que celles-ci sont immergees dann ces bacs. La vitesse lineaire du fil est de ce fait limitee, dans ces dispositifs, ä une valeur relativement basse de Fordre de 3 m/sec afin d"eviter des efforts de traction exageree nur Ale fil. Dann the devices of known type, the first wire plunges into the various trays being guided by a number of deflection pulleys strongly braking the first thread because they are immersed in these trays. The linear speed of the wire is therefore limited, in these devices, to a relatively low value of the order of 3 m/sec in order to avoid excessive tensile forces on the wire.

0n a dejä propose des dispositifs d'etamage de fil metallique Jans lesquels 1e fil traverse en ligne droite 1e bac rempli d'etain en fusion en entrant soit par la surface du metal avec un angle reiativement faible, soit par une filiere placee dann la paroi avant de ce bac et en sortant par une filiere placee dann la paroi posterieure du bac et dont le diamUre cor- respond exactement au diametre du fil recouvert dune epaisseur choisie predeterminee d'etain. Devices for tinning metal wire have already been proposed in which the wire passes in a straight line through the tank filled with molten tin, entering either through the surface of the metal at a relatively low angle, or through a die placed in the wall. front of this tank and leaving through a die placed in the rear wall of the tank and whose diameter corresponds exactly to the diameter of the wire covered with a chosen predetermined thickness of tin.

Ces dispositifs permettent d'atteindre des vitesses lineaires du fil ä etamer de Fordre de la dizaine de metres par seconde. Ils sont toutefois. encore limites dans leurs possibilites de d6bit du fait que 1e fil ä etamer reste soumis, au cours de son passage par les divers posten de traitement, ä des forces de frotte- ment augmentant rapidement avec la vitesse de de- placement du fil. D'autre part, lorsqu'on desire 6ta- mer du fil ä grande vitesse, c'est-ä-dire ä des vitesses au moins egales ä 30 m/s, an est amene ä utiliser comme poste de depart une bobine fixe munie dune coronnelle, fixe ou entrainee, entouree d'un cylindre antiballonnernent ; or 1e frottement du fil dann ce cylindre est d'autant plus important que la vitesse de debit est elevee et il s'ajoute aux autres forces de frottement. Pour les grandes vitesses, an renonce ä utiliser des bobines tournantes parce que, au depart, 1e freinage du fil est fortement augmentz par Finertie. These devices make it possible to achieve linear speeds of the wire to be tinned of the order of ten meters per second. They are however. still limited in their throughput possibilities because the wire to be tinned remains subjected, during its passage through the various treatment stations, to frictional forces which increase rapidly with the speed of movement of the wire. On the other hand, when it is desired to draw yarn at high speed, that is to say at speeds at least equal to 30 m/s, one is led to use as a starting station a fixed reel equipped a crown, fixed or driven, surrounded by an anti-ballooning cylinder; or the first friction of the wire dann this cylinder is all the more important as the speed of flow is high and it is added to the other frictional forces. For high speeds, the use of rotating bobbins is dispensed with because, at the start, the braking of the yarn is greatly increased by inertia.

Quel que soit 1e type du dispositif d'etamage ä chaud utilise, an doit aussi tenir compte de ce que la resistance ä la rupture de la partie du fil immer g6e dann 1'etain en fusion est considerablement di- minu6e en raison de la temperature elevee. Ces. di verses raisons RTI ID="0001.0271" WI="7" HE="4" LX="1335" LY="1706"> font que Fon ne peut actuellement depasser, avec les dispositifs connus, une certaine vitesse, dite critique, de däfilement. Irrespective of the type of hot-dip tinning device used, it must also be taken into account that the breaking strength of the part of the wire immersed in the molten tin is considerably reduced due to the temperature. high. These. various reasons RTI ID="0001.0271" WI="7" HE="4" LX="1335" LY="1706"> mean that Fon cannot currently exceed, with known devices, a certain speed, called critical, of scrolling.

La presente invention a pour objet un dispositif d'etamage continu ä chaud ä grande vitesse d'un fil metallique, comprenant, disposes ä la suite 1'un de 1'autre, au moins une bobine fixe de depart, un bac d'etamage, un poste de reception, caracterise en ce qu'il comporte en outre, dispose entre la bobine de depart et 1e bac d'etamage, un cabestan moteur nur lequel 1e fil ä etamer est enrou1e en nu moins une spire et qui est entraine ä une vitesse peripherique au moins egale ä la vitesse de defilement choisie du fil. The subject of the present invention is a device for continuous high-speed hot tinning of a metal wire, comprising, arranged one after the other, at least one fixed starting coil, a tinning tank , a reception station, characterized in that it also comprises, placed between the starting reel and the first tinning tank, a motorized capstan on which the first wire to be tinned is wound in bare form at least one turn and which is driven to a peripheral speed at least equal to the chosen running speed of the wire.

Le dessin represente schematiquement ä titre d'exemples non limitatifs deux modes de realisation du dispositif d'etamage selon 1'invention. The drawing schematically represents, by way of non-limiting examples, two embodiments of the tinning device according to the invention.

A la fig. 1, 1e fil ä etamer 1, partant dune bobine fixe 2 logee dann un cylindre anti-ballonne- ment 3, passe par un cabestan conique 4 entraine par un moteur 5 avec une vitesse teile que la vitesse lineaire du fond de la gorge soit toujours superieure ä celle du fil. Le fil fait, par exemple, trois spires sur le cabestan 4. Dann ces conditions, toute traction superieure ä environ 10 % de la tension en aval du cabestan, est directement absorbee par 1e moteur auxiliaire 5. Si Fon veut diminuer ce pourcentage, il n'y a qu'ä augmenter 1e nombre des spires du fit autour du cabestan. In fig. 1, the tinning wire 1, starting from a fixed coil 2 housed in an anti-ballooning cylinder 3, passes through a conical capstan 4 driven by a motor 5 with a speed such that the linear speed of the bottom of the throat is always greater than that of wire. The wire makes, for example, three turns on the capstan 4. Under these conditions, any traction greater than approximately 10% of the tension downstream of the capstan, is directly absorbed by the auxiliary motor 5. If one wishes to reduce this percentage, it is there is only to increase the number of turns of the fit around the capstan.

Le fil passe ensuite par un bac de decapage 6, un bac d'etamage 7, un bac de refroidissement 8, un dispositif d'essuyage 9 et est repris par une bobine de reception 10. The wire then passes through a pickling tank 6, a tinning tank 7, a cooling tank 8, a wiping device 9 and is taken up by a take-up reel 10.

La fig. 2 montre un autre exemple de realisation de ce dispositif 6tabli selon le meme principe. Les memes numeros de reference sont affectes aux eZe- ments correspondants de la fig. 1. fig. 2 shows another embodiment of this device 6tabli according to the same principle. The same reference numbers are assigned to the corresponding elements of FIG. 1.

Le fil 1 partant dune bobine fixe 2 logee dans un cylindre anti-ballonnement 3 passe par un ca- bestan 4 et des poulies de renvoi 11, avant d'entrer dann le bac de decapage 6. 11 passe ensuite par 1e bac ä etamer 7, 1e bac de refroidissement 8 et les dispositifs d'essuyage 9. Avant d'arriver sur la bobine de reception 10, il passe par un autre cabestan 12 rendu solidaire en rotation du Premier cabestan 4 par un arbre commun, qui tourne librement dans des paliers von representes. The wire 1 starting from a fixed reel 2 housed in an anti-ballooning cylinder 3 passes through a capstan 4 and return pulleys 11, before entering the pickling tank 6. It then passes through the tinning tank 7 , the first cooling tank 8 and the wiping devices 9. Before arriving on the reception reel 10, it passes through another capstan 12 made integral in rotation with the first capstan 4 by a common shaft, which rotates freely in bearings von represented.

Le fil qui sort ä basse temperature du bac de refroidissement 8 entraIne 1e cabestan 12 qui trans- met son mouvement au cabestan 4 entrainant 1e fil sortant de la bobine de depart avec la meme vitesse. Toute force de freivage creee en amont du cabestan 4 et qui, comme decrit plus haut, prend des valeurs croissantes avec la vitesse et serait susceptible de provoquer un ralentissement du fil est transmise par i'arbre commun au cabestan 12 et est appliquee au fil froid allant directement ä la bobine de re- ception 10. The yarn which comes out at low temperature from the cooling tank 8 drives the capstan 12 which transmits its movement to the capstan 4 driving the yarn coming out of the starting spool with the same speed. Any braking force created upstream of the capstan 4 and which, as described above, takes on increasing values with the speed and would be liable to cause the wire to slow down is transmitted by the common shaft to the capstan 12 and is applied to the cold wire. going directly to the receive coil 10.

La Partie du fil entre les deux cabestans 4 et 12 est donc liberee de la plus grande Partie des ef- forts de traction appliquA au fil 1 puisqu'elle ne subit plus que le frottement relativement faible et presque ind6pendant de la vitesse dü aux elements disposes entre les deux cabestans. 0n peut alors pratiquement augmenter la vitesse de defilement jusqu'ä la limite de la resistance ä la rupture du fil froid. The part of the wire between the two capstans 4 and 12 is therefore freed from the greater part of the tensile forces applied to the wire 1 since it only undergoes the relatively low friction and almost independent of the speed due to the elements arranged between the two capstans. It is then possible to practically increase the running speed up to the limit of the breaking strength of the cold wire.

Claims

CLAIM Device for continuous hot tinning, at high speed, of an alloy wire, comprising, arranged one after the other, at least one fixed starting coil, a tinning tank , a reception station, characterized in that it further comprises, arranged between the starting coil and the first tinning tank, a motor capstan on which RTI ID="0002.0275" WI="3" HE="4" LX="1583" LY="1040"> the wire to be tinned is wound in at least one turn and which is driven at a peripheral speed at least equal to the chosen rolling speed of the wire. SUB-CLAIM Device according to the claims, characterized in that a second capstan, on which the first tinned wire is wound in at least one turn, is arranged between the tinning tank and the receiving station and is mechanically connected with the first First aforementioned capstan, so as to turn at the same speed.