METHOD OF TREATMENT OF THE METAL PRODUCTS Russian patent published in 2007 - IPC C23C4/02 C23C8/36 

FIELD: metallurgy industry; mechanical engineering; other industries; methods of the vacuum-arc treatment of the metal products.

SUBSTANCE: the invention is pertaining to the field of the vacuum-arc treatment of the metal products before deposition on them of the coatings and may be used in metallurgy industry, mechanical engineering and other industries. The method provides for the vacuum-arc refining of the product-cathode and deposition of the coatings. Before deposition of the coatings the vacuum-arc refining is combined with the simultaneous complete or local oxidation of the surfaces, for example, up to the yellow, blue, violet, brown, black colors and-or tints and the combinations of the colors and tints. During the treatment of the long-sized products the local oxidation can be conducted in the form of the longitudinal and-or transversal straps and areas. The mode of the oxidation is exercised due to vibrations of the arc or the arcs, and-or due to for example the change - the increase of the power of the arc and-or the power emitted by the product caused by the electric current passing through it in the section from the electric current feeder from the power supply or the power supplies feeding the arc or the arcs to the product-cathode up to the electric arc or the arcs. The technical result of the invention is expansion of the technological capabilities of the method of the vacuum-arc treatment, improvement of the quality and the extension of the assortment of the depositing coatings.

EFFECT: the invention ensures expansion of the technological capabilities of the method of the vacuum-arc treatment, improvement of the quality and the extension of the assortment of the depositing coatings.

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