A method for coating a mechanical member provided with at least a support plate and one or more tubular elements attached in through manner to the support plate. The method comprises a first coating step, in which an external surface of the support plate is coated with a first layer of plastic material, and a second coating step in which a terminal portion of the internal surface of the tubular elements is coated with a multi-layer coating. In the second coating step the multi-layer coating is made by depositing in sequence one on top of the other a plurality of layers of plastic material, each of which is deposited partly in correspondence with the terminal portion of the internal surface of the relative tubular element and partly in correspondence with the surface of the first layer of the external surface of the support plate.
F28F 19/04 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of rubberPreventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of plastics materialPreventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of varnish
B05D 7/22 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
2.
Method for coating a mechanical member, and mechanical member thus coated
A method for coating a mechanical member provided with at least a support plate and one or more tubular elements attached in through manner to the support plate. The method comprises a first coating step, in which an external surface of the support plate is coated with a first layer of plastic material, and a second coating step in which a terminal portion of the internal surface of the tubular elements is coated with a multi-layer coating. In the second coating step the multi-layer coating is made by depositing in sequence one on top of the other a plurality of layers of plastic material, each of which is deposited partly in correspondence with the terminal portion of the internal surface of the relative tubular element and partly in correspondence with the surface of the first layer of the external surface of the support plate.
B05D 7/22 - Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
F28F 19/04 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of rubberPreventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of plastics materialPreventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of varnish
3.
METHOD FOR COATING A MECHANICAL MEMBER, AND MECHANICAL MEMBER THUS COATED
Method for coating a mechanical member (10) provided with at least a support plate (1 1) and one or more tubular elements (12) attached in through manner to the support plate (11). The method comprises a first coating step, in which an external surface (15) of the support plate (11) is coated with a first layer (16) of plastic material, and a second coating step in which a terminal portion of the internal surface (17) of the tubular elements is coated with a multi-layer coating (19). In the second coating step the multi-layer coating (19) is made by depositing in sequence one on top of the other a plurality of layers of plastic material (19a, 19b, 19c), each of which is deposited partly in correspondence with the terminal portion of the internal surface (17) of the relative tubular element and partly in correspondence with the surface of the first layer (16) of the external surface (15) of the support plate (11).
F28F 19/04 - Preventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of rubberPreventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of plastics materialPreventing the formation of deposits or corrosion, e.g. by using filters by using coatings, e.g. vitreous or enamel coatings of varnish
4.
APPARATUS FOR THE INTERNAL COATING OF PIPES, AND RELATIVE METHOD
Apparatus (10) for the internal coating of pipes (12) in heat exchangers for boilers, condensers for cooling units or suchlike, comprising deposition members (30) insertable into the pipes (12) in order to deposit therein at least a processing substance able to achieve an internal coating layer. The apparatus (10) also comprises a first feeding unit able to feed a gas to the deposition members (30), and a second feeding unit able to fed the processing substance to the deposition members (30), which in turn comprise mixing elements (38) able to mix together the gas and the processing substance and disposed in correspondence with a terminal portion of the deposition members (30) which is inserted into one of the pipes (12).
B05B 13/06 - Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups specially designed for treating the inside of hollow bodies
patents
