METHOD OF PRODUCTION OF BENT SHAPED PIECES OUT OF SHEET METAL Russian patent published in 2005 - IPC

FIELD: mechanical engineering; methods of formation of shaped pieces out of a sheet steel.

SUBSTANCE: the invention is pertaining to the field of mechanical engineering, in particular, to the methods of formation of shaped hardware products from sheet steel. The offered method provides for a chemical-thermal treatment of slab billet in depth from the side of a form-shaping surfaces and a profiling. At that thus before realization of the chemical-thermal treatment conduct cleansing of the whole surface of the slab billet, on one or both cleansed surfaces superimpose a drawing determining the form of the bent pieces and on the determined area apply a layer of stannum or eutectics Pb-Sn, coat the rest area of the slab billet with a hermitic varnish, and the chemical-thermal treatment conduct by aluminizing. In particular cases of realization of the invention the cleaning is conduct by working. The aluminizing is carried out for 3-5 minutes: on a clean surface apply a drawing using a metallic pencil; a layer of stannum or eutectics Pb-Sn apply by a galvanic method. The technical result of the invention is application of methods of chemical-thermal treatment, in particular, the aluminizing for production of bent-shaped pieces with a protective coating.

EFFECT: the invention offers methods of chemical-thermal treatment, in particular, the aluminizing for production of bent-shaped pieces with protective coatings.

5 cl, 3 dwg, 2 ex