Abstract: A steel sheet is provided with a coating. The coating includes at least one layer of zinc, obtained by a jet vapor deposition method in which a ratio between a pressure inside the deposition chamber Pchamber and a pressure inside the zinc ejection chamber Peject is between 2·10?3 et 5.5·10?2 A method for fabricating the steel sheet is also provided.

Abstract: The present invention relates to a facility for the continuous vacuum deposition of a metal coating on a substrate in motion, comprising a vacuum deposition enclosure (24), at least one vapor jet deposition head (25,26) connected to an evaporator pot (9) designed to contain the coating metal in liquid form (11), through a vapor supply pipe (20) provided with a distribution valve (19), and a melting furnace (1) for said metal, said furnace being at atmospheric pressure, located below the lowest portion of the evaporator pot (9) and connected to the evaporator pot (9) by at least one automatic supply pipe (8) of the evaporator pot (9) provided with a supply pump (6) and by at least one liquid metal return pipe (8A,18) optionally provided with a valve (16,17), regulating means for the supply pump (6) further being present to regulate a determined liquid metal level in the evaporator pot (9), characterized in that it comprises, in each said supply and return pipes (8; 8A,18), a so-called heat valve area (7,13,15)

Abstract: The present invention provides a process for coating a substrate. A metal alloy layer including at least two metallic elements is continuously deposited on the substrate by a vacuum deposition facility. The facility includes a vapor jet coater for spraying the substrate with a vapor containing the metallic elements in a constant and predetermined relative content, the vapor being sprayed at a sonic velocity. The process may advantageously be used for depositing Zn—Mg coatings. The invention also provides a vacuum deposition facility for continuously depositing coatings formed from metal alloys, for implementing the process.

Abstract: The invention relates to a process for coating a substrate (S) whereby a metal alloy layer comprising at least two metallic elements is continuously deposited on the substrate (S) by means of a vacuum deposition facility (1) comprising a vapor jet coater (7) for spraying the substrate (S) with a vapor containing the metallic elements in a constant and predetermined relative content, the vapor being sprayed at a sonic velocity. The process is more particularly intended for depositing Zn—Mg coatings. The invention also relates to a vacuum deposition facility (1) for continuously depositing coatings formed from metal alloys, for implementing the process.

Abstract: The invention relates to a process for coating a metal strip, in which a layer of an oxidizable metal or an oxidizable metal alloy or a metal oxide is vacuum-deposited on a metal strip precoated with zinc or with a zinc alloy, the coated metal strip is then coiled, and the wound coil undergoes a static diffusion treatment so as to obtain a strip having a coating that comprises, in the upper portion, a layer of an alloy formed by diffusion of the oxidizable metal or the oxidizable metal alloy in all or part of the zinc or zinc alloy layer, and also to equipment for implementing the process.

Abstract: The present invention relates to a vacuum deposition facility for depositing a metal alloy coating on a substrate (7), said facility being equipped with a vapour generator/mixer comprising a vacuum chamber (6) in the form of an enclosure provided with means for creating a vacuum state therein relative to the external environment and provided with means for the entry and exit of the substrate (7), while still being essentially sealed from the external environment, said enclosure including a vapour deposition head, called the injector (3), configured so as to create a jet of metal alloy vapour of sonic velocity towards the surface of the substrate (7) and perpendicular thereto, said ejector (3) being in sealed communication with a separate mixer device (14), which is itself connected upstream to at least two crucibles (11, 12) respectively, these containing different metals M1 and M2 in liquid form, each crucible (11, 12) being connected to the mixer (14) by its own pipe (4, 4?).

Abstract: The invention relates to a process for coating a substrate (S) whereby a metal alloy layer comprising at least two metallic elements is continuously deposited on the substrate (S) by means of a vacuum deposition facility (1) comprising a vapor jet coater (7) for spraying the substrate (S) with a vapor containing the metallic elements in a constant and predetermined relative content, the vapor being sprayed at a sonic velocity. The process is more particularly intended for depositing Zn—Mg coatings. The invention also relates to a vacuum deposition facility (1) for continuously depositing coatings formed from metal alloys, for implementing the process.

Abstract: Method and apparatus for the production of molded bodies which are shaped by means of a filtration-dehydration process wherein such bodies after shaping are subjected to a rolling movement preferably by means of a roller conveyor to strengthen and homogenize the same before being further processed.

Abstract: An agitation flotation cell for the preparation of minerals and coals having at its lower end a structure including a vertical shaft with a disk at the lower end of the shaft being circular in plan view with said disk having a first lateral section tapering outwardly and downwardly from a central diametral line passing through the shaft and a disk having a second lateral section tapering outwardly and downwardly from the central diametral line with the two sections meeting at a peak to form a roof-shaped surface with first and second radially extending vanes projecting above the first and second sections extending at right angles to the peak and third and fourth radial vanes extending downwardly from the peak on the bottom side of the vanes and being parallel to the peak.