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Title:
ECOLOGIC METHOD FOR THE CONTINUOUS CHROME PLATING OF BARS AND ASSOCIATED DEVICE.
Document Type and Number:
WIPO Patent Application WO/2016/120700
Kind Code:
A3
Abstract:
Method and plant for the continuous chrome plating of metal bars, tubular elements and similar, wherein the bar to be chromed it is made move forward fastly in a device of chrome plating without of tank of chrome plating comprising a plurality of anodic cells of chrome plating with tubular-torx shape, into which an electrolytic solution flows with high density of current, for forming on the bar a multi-layer chromium plating while the bar moves forward through the anodes-cells themselves, and wherein the device is characterized in feeding the electrolytic solution with a flow axially distributed and with a circulation of the electrolyte in a turbulent flow, controlled through the anode of chrome plating, said plant comprising furthermore many cooling stations of the bar by means of a jet of liquid with cryoscopic thermal step, the sealing of the bath is guaranteed by gaskets in plastic material which are reinforced by armonic steel springs. The plant is characterized in that it is constructed with materials (titanium) and techniques suitable to be used with trivalent chromium in substitution of the hexavalent chromium according to the directives REACH. The plant produces a closed cycle with low energetic consumption, so producing the exceptional faradic efficiency.

Inventors:
ANGELINI, Giorgio (No. 9, Via Primo Villa, Burago di Molgora, 20875, IT)
Application Number:
IB2015/059777
Publication Date:
June 29, 2017
Filing Date:
December 18, 2015
Export Citation:
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Assignee:
ACROM S.A. (No. 5, Rue De Bonnevoie, 1260 Luxembourg, 1260, LU)
International Classes:
C25D3/06; C25D5/08; C25D7/00; C25D17/00; C25D17/02; C25D17/10; C25D17/12; C25D21/02; C25D21/10
Domestic Patent References:
WO2008057123A12008-05-15
Foreign References:
US3751344A1973-08-07
EP1010779A22000-06-21
US4820395A1989-04-11
US20050284769A12005-12-29
Other References:
DATABASE WPI Week 198903, Derwent World Patents Index; AN 1989-018570, XP002749542
Attorney, Agent or Firm:
GALASSI, Alessandro (MilanoSuccursale di Lugano,Via Castagnol, 21/c 6900 LUGANO, 6900, CH)
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