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

Abstract

The invention relates to a treatment device (1) for treating a metal object (2) to be treated, wherein the object (2) to be treated is a wire or a wire part, wherein the treatment comprises at least the pickling and the phosphating of the object (2) to be treated, wherein, by means of the phosphating, a protective layer is produced on the surface of the object (2) to be treated, wherein the treatment device (1) comprises at least the following apparatuses: a treatment container (4) for holding the object (2) to be treated and for holding a flowable treatment substance (6), a pumping apparatus(10) for circulating at least a portion of the treatment substance (6), wherein the treatment substance (6) flows around at least part of the object (2) to be treated, in particular the entire object(2) to be treated, wherein the treatment substance (6) is a phosphorus- or phosphate-containing solution, in particular phosphoric acid, wherein the phosphorus- or phosphate-containing solution consists of water, in particular VE water, and of a reaction substance, and the reaction substance consists of phosphorus or of a phosphate and of at least one additional substance that improves the treatment effect, in particular one or more inhibitors, wherein the fraction of the phosphorus or the phosphate in the reaction substance is more than 98 vol% and especially preferably more than 99 vol%, wherein the reaction substance preferably has no fractions of hydrochloric acid and sulfuric acid and preferably also no fractions of fluorine, chlorine, bromine, iodine, lead, mercury, and selenium andwherein the reaction substance is mixed with water at a specified ratio, wherein the specified ratio lies between a lower limit and an upper limit, wherein the lower limit is defined by a mixture at aratio of 1 kg of reaction substance to 2 liters of water and the upper limit is defined by a mixture of 1 kg of reaction substance to 12 liters of water, and in particular the mixture has a ratio of1 kg of reaction substance to 6 liters of water.

Description

technical field [0001] The invention relates according to claim 1 to a treatment plant for treating objects in a single stage, according to claim 10 to a treatment plant, and according to claim 11 to a treatment plant for at least pickling and phosphorizing of metal treatment objects treatment method. Background technique [0002] Previous treatment plants for phosphating objects required a large number of work steps, in particular 7 work steps, and had a number of different tanks for this purpose. In this case, the objects are first inserted into a first tank, in which a first liquid is provided for degreasing the objects. After degreasing, the objects have to be removed from the first tank and transported to the second tank. A rinsing fluid for rinsing the objects is provided in the second tank. After rinsing, the objects are transported to a third tank. The third tank is filled with a hydrochloric / sulfuric acid mixture. After the hydrochloric acid / sulfuric acid treat...

AI Technical Summary

Problems solved by technology

Risk of material failure depending on the strain of the respective object, e.g. through the introduction of tensile residual stresses and / or tensile load stresses

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