Treatment device for pickling and phosphating wire or wire parts, and treatment method, and treatment plant for coating the wire or the wire parts

Abstract

A treatment device is provided for treating a metal object, wherein the treatment comprises at least pickling and phosphating of the object, and, by means of the phosphating, a protective layer is produced on a surface of the object. The treatment device comprises a treatment container for holding the object to be treated and for holding a flowable treatment substance, and a pumping apparatus for circulating at least a portion of the treatment substance. The treatment substance is flowable around at least part of the object to be treated, and is a phosphorus- or phosphate-containing solution. The solution consists of water and a reaction substance, and the reaction substance consists of phosphorus or of a phosphate and at least one additional substance that improves treatment effect. The fraction of the phosphorus or the phosphate in the reaction substance is more than 98 vol % and especially preferably more than 99 vol %.

1 . A treatment device for treating a metallic treatment object, wherein the treatment object is a wire or a wire part, wherein the treatment comprises at least pickling and phosphating of the treatment object, wherein a protective layer is produced on the surface of the treatment object by means of the phosphating,
 wherein the treatment device comprises:   a treatment container for holding the treatment object and for holding a flowable treatment substance;   a pump device for recirculating at least a portion of the treatment substance; and   an ultrasonic device situated in or on the treatment container for acting on the treatment object and/or the treatment substance;
 wherein the treatment substance may flow around at least a portion of the treatment object, and 
 wherein the ultrasonic device is situated on a holding device that is configured to accommodate the treatment object in the form of a wire or a wire coil. 
   
     
     
         2 . The treatment device according to  claim 1  further comprising
 a turbulence device for turbulizing impurities that deposit in the treatment substance, 
 wherein the turbulence device has at least one provision device and a fluid line element with a plurality of outlet openings for supplying a turbulizing fluid to the treatment substance, 
 wherein the turbulizing fluid is suppliable by the provision device to the fluid line element at a pressure of greater than 2 bar, wherein the fluid line element forms multiple line sections that are decoupleable from one another by means of valve devices, at least the majority of the line sections being situated in the area of the base of the treatment container. 
 
     
     
         3 . The treatment device according to  claim 2 ,
 wherein   the line sections are formed by tubes,   wherein the tubes are coupled to the base of the treatment container or situated thereon,   wherein the tubes are connected to one another by means of at least one distributor unit, and   wherein each valve device is designed as a shutoff valve, and   the provision device is designed to provide gas that is under at least 2 bar pressure.   
     
     
         4 . The treatment device according to  claim 1  further comprising
 a filter device for filtering the treatment substance to remove impurities from the treatment substance that have become concentrated in the treatment substance, and 
 a control device for operating the filter device and/or the turbulence device, 
 wherein the filter device and the turbulence device are operable, at least at times, in dependence on one another. 
 
     
     
         5 . The treatment device according to  claim 2   wherein   the turbulence device is operable to provide the fluid and control the valve devices, at least at times,   wherein the valve devices are controllable according to predetermined patterns.   
     
     
         6 . (canceled) 
     
     
         7 . The treatment device according to  claim 1   wherein   a defoamer additive for defoaming is added to the treatment substance,
 and/or 
   a pickling degreaser additive for pickling degreasing is added to the treatment substance.   
     
     
         8 . The treatment device according to  claim 1   wherein   the treatment container has a main holding chamber into which the treatment object is introducible, and a first secondary holding chamber, wherein the main holding chamber and the first secondary holding chamber are connected to one another in such a way that the treatment substance on the one hand may flow out of the main holding chamber into the first secondary holding chamber, and on the other hand may flow from the first secondary holding chamber into the main holding chamber, wherein the main holding chamber and the first secondary holding chamber are delimited from one another in such a way that penetration of the treatment object into the first secondary holding chamber is at least partially prevented, and   wherein the main holding chamber is likewise coupled to a second secondary holding chamber,   wherein the first secondary holding chamber is a buffer holding chamber, provided beneath the main holding chamber, for holding a certain quantity of treatment substance, and   wherein the second secondary holding chamber is a temperature control chamber, wherein the temperature control device is at least partially situated in the second secondary holding chamber.   
     
     
         9 . (canceled) 
     
     
         10 . A treatment facility,
 comprising at least   a treatment device according to  claim 1  for producing a protective layer on the treatment object designed as a wire or wire part, so that the protective layer has a thickness of 1 μm to 20 μm,   and   a forming device for treating the treatment object.   
     
     
         11 - 15 . (canceled) 
     
     
         16 . The treatment device according to  claim 1  wherein the ultrasonic device is configured to bring about movement of at least portions of the treatment object by ultrasonic action. 
     
     
         17 . The treatment device according to  claim 3  wherein the tubes each have a diameter between 2 mm and 12 mm. 
     
     
         18 . The treatment device according to  claim 3  wherein the tubes each have a diameter between 3 mm and 9 mm. 
     
     
         19 . The treatment device according to  claim 3  wherein the tubes each have a diameter between 4 mm and 6 mm. 
     
     
         20 . The treatment device according to  claim 7  wherein the defoamer additive comprises triisobutyl phosphate. 
     
     
         21 . The treatment device according to  claim 7  wherein the pickling degreaser additive comprises an aqueous solution of nonionogenic biodegradable surfactants and inhibitors. 
     
     
         22 . The treatment device according to  claim 7  wherein the pickling degreaser additive comprises 2-butyne-1,4-diol. 
     
     
         23 . The treatment facility according to  claim 10  further comprising a transport device for transporting the treatment object, treated by means of the treatment device, to the forming device.