DE1521451B2 - Device for wire drawing and hot tinning of metal wires - Google Patents

Description

the lower part of the scraper always in the tin bath is immersed, but its upper part is outside the tin bath.

The invention offers the advantage that a regulation of the immersion depth of the deflection sector as well the height adjustment of the stripping nozzle takes place in such a way that the stripping nozzle is always in is in a position where its lower part is at the level of the weld pool. Through this it is achieved that the wiping nozzle has practically the temperature of the molten bath, but the one off The wire exiting the nozzle is outside the weld pool. This measure will a good distribution of the metal layer on the wire when it emerges from the bath is achieved and 15 Avoid eddies on the melt pool surface. The measures of the invention do not lead to one expected effect with regard to the quality of the tinning, which is clearly superior to that which can be achieved with the known devices.

The deflection sector can consist of steel or sintered porcelain.

The plant has the wire from the wire drawing device up to receiving the finished wire moving drive device, either by itself or by Additional units are designed so that the progressiveness of the acceleration of the throughput speed of the wire when starting up the system, taking into account the mechanical strength of the Wire can be controlled.

Furthermore, at least one surface treatment trough is at the exit Rollers for the wire arranged in such a way that they are set in rapid rotation as the wire passes through and the the centrifugal force occurring here causes the removal of the liquid adhering to the wire, whereby baffles are provided on the rollers to collect and return the liquid.

For a more detailed explanation of the invention, a description of the illustrated in the drawings follows Working examples.

Fig. 1 is a schematic representation of the plant chain from the wire drawing device to the receiving device for the finished tinned wire.

F i g. 2 is an elevation of a treatment trough for degreasing, pickling or cooling;

F i g. 3 is a vertical section of a treatment trough running perpendicular to the direction of passage of the wire according to FIG. 2,

F i g. 4 is an elevation of a sink trough;

Fig. 5 and 6 are longitudinal sections of the tinning trough in the working position and when drawing in the Wire,

F i g. 7 is a schematic representation of a modified embodiment of the complete Plant chain,

Fi g. 8 shows a modified device for cooling the tinned wire.

According to the scheme of FIG. 1 follows the wire drawing machine 1 an annealing device 2. From the exit of the annealing device 2, the wire 4 runs into Troughs placed one behind the other for surface treatment. In the system shown are a A trough for degreasing 5, a trough for pickling (pickling) 6 and a trough for rinsing 7 are provided. From the latter, the wire 4 runs through the tinning trough 8 and the cooling trough 10 to the receiving device 11th

The treatment troughs for degreasing 5, pickling 6 and cooling 10 can be similar, as in FIG F i g. 2 and 3 shown to be built. They consist of three main parts.

The lower container 51 contains the treatment liquid; the adjoining upper part 52 is through the access cover 52 α closed; the side chamber 53 is also through an access cover

53 α closed.

In the upper part a channel 54 is provided through which the wire 4, the delimitation slots 54 λ and

54 6 traversing horizontally. The channel 54 is fed in excess with liquid from the motor pump 55 through the connection nozzle 54c located below via the line 56. The excess liquid flows through the slots 54 and α 54 b back into the reservoir 51st

In the side chamber 53 three guide rollers 57 a, 57 b and 57 c are arranged. The roles 57 α and

57 c are set so that the wire axis is almost tangential at the bottom of its running grooves. The roller 57 b is adjustable so that it can more or less depress the wire.

The rollers 57 α, 57 b and 57 c are set in rapid rotation by the wire passing through, so that the liquid running off the wire is thrown away as a result of the centrifugal force. The liquid is thrown against the walls of the side chamber 53. The deflector plates 58 a, 58 b and

58 c prevent liquid thrown off from falling onto adjacent rollers. Over the sloping floor In the side chamber 53, the thrown-off liquid returns to the storage container 51.

The washing trough 7 shown in FIG. 4 is constructed in the same way as the troughs 5, 6 and 10. Its vertical section corresponds to FIG. 3. At the bottom it has the storage container 71 for the liquid, an upper part 72 closed with the access cover 72 α and a side chamber 73 closed with the access cover 73 α.

In the upper part 72 a channel 74 is provided, through which the wire 4 passes horizontally, traversing the delimitation slots 74 α and 74 b. The channel 74 is fed through the connection piece 74 c located below from a motor pump corresponding to the pump 55 (FIG. 3) via the line 76. The excess liquid flows through the slots 74 and α 74 b back into the reservoir 71st

In the side chamber 73 only two guide rollers are provided b α 77 and 77 in this trough, which are arranged so that the wire 4 prior to leaving the tub 7 changes its direction twice. The deflector plates 78 a, 78 b and 78 c prevent the thrown-off liquid from reaching an adjacent roller. The thrown off liquid flows back to the storage container 71 via the inclined bottom of the side chamber 73.

On the exit side of the wire 4 from the trough 7, a nozzle 79 is arranged, which with a - stream compressed air in countercurrent to the wire movement, the adhering liquid into the trough can drive back.

The tinning trough 8 is per se a normal tinning trough of shallow depth with the usual ones Devices for heating and thermal insulation. In addition, the tinning trough has the

the F i g. 5 and 6 show two devices, one of which is labeled 81 and the other is labeled 91 is.

The device 81 consists of a fixed on the trough 8 support 81a, a plate 81 b which is held by a α on the support 81 attached to shaft 82 pivotally and c by the counterweight 81 in equilibrium and to regulate the depth of immersion height-adjustable support 81 d, which is connected to the plate 81 b by the arms 83 α and 83 b . The arms 83 α and 83 b are pivotable about the axes 84 α and 84 b which are fixedly arranged on the carrier 81 d and about the axes 85 α and 85 b which are fixedly arranged on the plate 81 b.

The arm 83 α extends upwards to an operating lever, for the adjustment of which the handle 86 acting on the toothed sector 87 is actuated. The toothed sector 87 is firmly connected to the plate 816.

The movement of the counterweight 81 c is limited by the stop bolts 81 e and 81 / fixedly attached to the support 81 α.

The carrier 81 is (F i g. 5) downwardly extended to a d immersed in the molten tin bath part. At the lower or free end of this extension, a non-rotatable disk with a running groove is arranged as a deflection sector 88 and serves to deflect the wire 4. Instead of the disk, a disk sector provided with a running groove of approximately 180 ° can also be used, corresponding to the angle formed by the incoming and outgoing part of the wire 4.

The turning sector 88 can be made of any suitable material, e.g. B. made of steel and sintered Porcelain. The wire 4 slides through the running groove of the deflection sector 88, whereby through the liquid tin ensures adequate lubrication.

A seat for a height-adjustable scraper is also provided on the carrier 81 d. In the embodiment shown, this is a calibrated nozzle 89 through which the wire traverses as it exits the tin bath. The nozzle 89 is mounted in the seat so that it can move somewhat in all directions. It is always placed in such a position that its lower part is immersed in the tin bath and its upper part is above the bath level, which means that it is practically the same as the bath temperature, but the wire emerges from the nozzle outside the bath. This position is set by adjusting the lever 83 α in relation to the toothed sector 87, taking into account the changes in the bath level.

When leaving the bath, the wire runs according to the embodiment of FIG. 5 vertically upwards and passes the axis 82 on the right. With this arrangement, the tension of the wire 4 is intended to cause the counterweight 81 c to rest against the stop 81 e .

The carrier 81d carries a stop cam 90 on which the lower extension of the device rests 91st The main part of the device 91 is a plate which is bent so that it forms a tunnel through which the wire 4 passes. At its upper end it is firmly connected to the part 92. The latter is pivotable about the axis 93, which is held by the carrier 94 attached to the trough 8.

The lower end of the tunnel 91 is extended by the rod 95, which is in the working position the stop cam 90 of the carrier 81J rests. In addition, the tunnel 91 has a pipe feed 96.

Dimensions and shape of the tunnel 91 are chosen so that the lower, remaining open part into the .Tin bath immersed. The remaining parts are closed except for a slot at the entrance of the Wire 4.

The pipe feed 96 is used to continuously blow in an inert gas, which is then through the Wire entry slot can escape. In this way the wire is constantly surrounded by inert gas, until he enters the tin bath. This prevents it from spreading on the surface of the bath the air brought in by the wire forms a layer of oxidation products and the like.

For the introduction of the wire 4 through the tunnel 91 and further via the \ Imlenksektor 88 and through the wiping nozzle 89 of the tunnel 91, as shown in F i g. 6 shown, raised and possibly held in this position by means not shown.

Then the device 81 is pivoted by means of the extension of the lever 83 a until it stops. In this position shown in FIG. 6, the wire can be drawn in in a straight line and very easily will. ·

After leaving the stripping device 89, the wire is initially sufficient for pre-cooling via a Long distance in the air, so that the tin layer covering the wire is adequately covered solidified before the wire is passed over a pulley. The length of this route is depending on the respective cooling conditions, in particular on the running speed of the Wire. In general, it is on the order of 4 m to allow the wire to be drawn in facilitate, the roller 96 (FIG. 1) is therefore attached to a carrier 97 which can be lowered so far that the Roll 96 comes within reach.

The wire 4 is then guided to the cooling trough 10 via a further deflection roller 98 (FIG. 1). This The trough can be of the same design as the troughs 5 and 6 described above. From the exit of the trough 10, the finished wire 4 is passed over the pulley 99 to the receiving device 11, where it is known Way on bobbins or the like. Is wound.

If the air cooling is not sufficient after leaving the tin bath, the wire 4 Let emerge obliquely to the bath surface, as it is in the modified embodiment of FIG. 8 shown is. The wire 4 runs through a slotted trough 100 in which a cooling liquid rotates, and is then over the pulley 96 and optionally through the further cooling trough 10 to Recording device 11 passed. If the facilities of the plant, as in F i g. 1 shown in Series are installed, so the usual, done by the motor 3 drive the wire 4 in the Wire drawing and annealing device switched synchronously with the wire drive in the receiving device.

Since the wire drawing and tinning should be done with high throughput speed and the mechanical strength of the wire is relatively weak, you have to use the synchronous drives Control the start-up so that the speed increases very gradually. One therefore uses as a motor

drive 3 ζ. Β. an infinitely variable motor or a motor with a coupled, progressively working one Gearbox with which the increase in speed can be regulated to the required extent.

Fig. 7 shows a modified arrangement of the wire drawing, annealing and tinning device in the usual trough of the annealing device as the cooling trough and the usual receiving device as the receiving device the wire drawing machine.

As with the system described first, you have the wire drawing machine 1, the annealing device 2 and the drive device 3. From the exit of the annealing device 2, the wire runs through the degreasing trough 5 and the pickling and rinsing trough 7 to the tinning trough 8. After leaving the tinning trough, the wire runs through the Distance for air cooling to the deflection roller 96 and then goes through the cooling trough of the annealing device 2 and finally to the receiving device of the wire drawing machine 1. In this system too, the troughs 5, 7 and 8 are of the same design as in the system in FIG. 1. In FIG 7, however, only one trough 7 is provided for pickling and rinsing, since these two operations can be carried out in one trough for certain products. You can also use products with which the operations of degreasing, pickling and rinsing can be carried out at the same time. In these cases the number of treatment currents is reduced.

ίο Thanks to the use of a grooved Fixed deflection sector 88 for deflecting the wire can be done with a tinning bath wire drawing and tinning from a shallow depth at the same time and at high throughput speeds carry out. The addition of this means is the arrangement of the guide rollers and deflector plates described to remove the liquids during the surface preparation of the wire and a Motor with adjustable acceleration. The plant can be used in the same way for the treatment of use thick, medium and thin wires.

For this purpose 2 sheets of drawings

409527/323

Claims (1)

1 2 From the German patent specification 433 793 it is Claim: known, the wire from a deflection roller in the tin bath lead up vertically and through a Device for wire drawing and warm adjustable, but at a considerable distance above tinning of metal wires at a high flow rate speed using a single let. The stripping device is primarily used Drive device, consisting of a wire for smoothing the plastically solidified coating metal, drawing and a soft annealing device known disadvantage is that at higher throughput speeds Design, at least one of the annealing device speed vortices arise on the bath surface, which the subsequent, the surface pretreatment promote oxidation, an even surface of the wire serving trough as well as the tin bath, in train and for splashing metal that can lead to a wire guide that can be raised and lowered. Umlenksektor immersed and the one high- In addition, the creation of a plant for adjustable wiper, and means tinning of wires with high throughput to cool down and absorb the tinned 15 speed up to now still further difficulties Wire, characterized in that with it, which affects the start-up of the plant under the deflection sector (88) provided with a running groove taking into account the mechanical strength of the and which is preferably obtained from a calibrated nozzle of wire, since a wire of relatively (89) existing small diameter, vertically traversed by the wire, with a much higher end Scraper on one to regulate the speed than with the usual tin immersion depth, height-adjustable carrier (81 d) is intended to run. It was difficult too are ordered and that as a result of this regulation at high throughput speed, the distance the lower part of the scraper always into the tin- the excess liquid when leaving the bath is immersed, but its upper part is surface treatment baths and before entering outside of the tin bath. »5 the tinning bath. For these reasons, the maximum throughput achieved with wire tinning The invention relates to a device for wire speed well below the speeds that can be achieved by drawing and hot tinning of metal wires with wire drawing, and it was therefore not possible to use a high throughput speed using 3 °, a single drive device consisting of in a satisfactory manner to create a continuously operating system that has a wire drawing device, a known type of annealing device, at least one annealing device and a tinning device in a wire drawing device and a soft annealing device,
Direction following, the surface pretreatment controllable drive devices with which the development of the wire serving trough and the tin bath, 35 wire according to its strength up to the Endgein which can be raised and lowered speed for wire guidance, are known deflection sector dips and the one height adjustment - ("Draht", 1957, No. 8, p. 339). Has fixed adjustable wipers, and means for deflecting sectors are cooling and receiving the tinned wire in the German patent. 642 892. However, these cannot be adapted to the respective height of the weld pool, based on generally soft-annealed known, treatment troughs for pre-wires, in several successive work operations as well as the arrangement of rollers are carried out, namely the Surface treatment of liquid by centrifugal force, treatment of the wire, such as degreasing, pickling (Deka- The invention allows, while eliminating the | pieren), rinsing, then the actual tinning 45 previous difficulties the wire drawing and the 'and the cooling before the Winding the wire. To carry out hot tinning in a plant, with certain operations for surface treatment of the successive work can be combined in a chain. Naturally, steps are to be carried out on a wire which, due to the throughput speed of a tinning machine, runs at the same high linear speed, limited by the technological requirements as in the case of the wire drawing machine, in each of the above-mentioned work steps, in particular Invention is a device special in tinning itself. For wire drawing and hot tinning of metal-When passing through the molten wire at high speed under the tin bath, the wire must enter between its use of a single drive device and its exit via at least one deflection - 55 run upright from a wire drawing and a soft annealing device, which generally consists of a device of known type, at least one of the top roller, which is movable and connected to the annealing device in rotation through the wire. If such a deflection roller is used for pretreatment of the wire and is arranged in a trough that is not very deep, the tin bath into which a wire guide is lifted and there is the disadvantage that movements 60 caused, which-has the oxidation of the height-adjustable scraper, and means. ■■ «Favoring the bath surface and even spraying metal to cool down and take up the tinned wire, if the wire passes through at a high speed, which is characterized by the fact that it runs at a groove speed. Attempts have been made to avoid these disadvantages by using a calibrated nozzle consisting of a deep trough from the wire digging, but this vertically running scraper on a to the regulator increases the installation costs, the amount of tin-plating of the immersion depth height-adjustable carrier bads and their heat losses. are arranged and that as a result of this regulation