Abstract:
A rotatable electroplating barrel for electroplating articles, the electroplating barrel having a proximal end with a centrally formed aperture and a distal end with at least one helical rib extending circumferentially along a longitudinal axis and between the proximal end and the distal end. The at least one helical rib, proximal end, and distal end of the electroplating barrel are formed integrally as a unitary piece and have a contiguous perforated outer wall configured to couple directly to the proximal and distal ends, extending therearound to enclose the at least one helical rib.
Abstract:
An inexpensive electrowinning electrode has a cathode that is a porous form made from conductive filaments, and an anode. The electrowinning process dissolves a contaminated metal stream into an electrolyte to form a solution flow of dissolve metal and contaminants. Next, the solution is oxidized. Then, the dissolved metals in the solution are plated onto the porous cathode.
Abstract:
This invention relates to a system and process for electroplating that has plating drums whereby the plating drums are filled, and emptied of parts at each individual plating cell and the parts are cleansed by spraying, wiping and/or drying and whereby only cleansed parts are transported from plating cell to plating cell. This results in less contamination and higher efficiencies in plating.
Abstract:
An automated cathodic electrodeposition line has a barrel carriage assembly that is electrically energized only when in contact with a treatment tank or an overhead programmed hoist. A parts transfer shuttle moves phosphated parts from one treatment barrel to another barrel and between separate sections of the coating line to reduce cross contamination. An automatic parts loader rotates a bin filled with parts into a parts discharge position for loading parts onto a vibrating tray that in turn moves parts into a treatment barrel. Cathodically coated parts are cured by infra-red parts in a curing oven.
Abstract:
This invention relates to a process and apparatus for electroplating that has an electrolyte continually circulating through a rotating plating barrel along with its parts to be plated by having a nozzle spray means with perforation on an elongated perforated tube that is positioned above the center of a barrel, whereby the spray means barrel is provided with recirculated electrolyte by means of a pump recirculating electrolyte from a plating tank to the elongated perforations while the barrel is rotating, so that the parts are agitated and greater speed and efficiency of the plating process can be achieved.
Abstract:
An apparatus for electrolytically coating small parts, e.g. by electrophoretic deposition from a liquid coating agent, has a screw-type conveyor which can have a tube open at opposite ends to form an inlet and outlet for the parts which are advanced through the tube by screw conveyor means like a helical ribbon. The inlet side of the tube is immersed in a basin of the liquid coating agent whose side walls and front wall form weirs determining the level of the liquid coating agent in the tube while the liquid passes from the tube into a catch basin beyond the rear wall through perforations in the tube. The contacts traversing the tube wall are electrically-conductively coupled to the parts and are tied to one terminal of the DC power source whose other terminal is connected to a plate immersed in the dipping basin.
Abstract:
A container assembly including a plastic container formed by rotational casting in a multiple piece mold, particularly for use in tumbling and treating small articles such as in coating, electroplating, washing and cleaning such articles while the container is in rotational motion. An opening in the side wall of the container is provided after the container is molded and a closure is disposed thereacross. Portions of the side wall of the container are specially molded to retain one or more retainers, such as metal spring clips, in place against the closure to tightly hold the closure against the opening. In a particular form, one or more large gears are secured against the end walls of the container and access is had to the interior of the container as it operates, through respective end openings and tubular formations integrally molded with the end walls thereof.
Abstract:
A barrel plating apparatus for forming, by electroplating or electroless plating, a layer on surfaces of articles formed of ceramics such as zirconia for use as resistors, condensors or other electrical parts or elements mounted on printed circuit boards, for example. The apparatus comprises a hollow barrel rotatably supported by a pair of vertical plates spaced apart from each other, and unrotatable agitators housed in the barrel and including a plurality of agitating balls for agitating the articles under plating treatment. The barrel in rotation and the agitating balls produce a combined effect for agitating the articles to the full. The articles are thus plated with coatings of uniform thickness and reliable adhesion.
Abstract:
An electroplating barrel comprises a rotatable, perforated barrel for holding objects to be electroplated. The barrel defines at least one access aperture for access to its interior, plus means for imposing an electrical potential across electrolyte solution within the barrel. In accordance with this invention the access aperture has aperture-defining edges, the edges occupying planes which are at an acute angle of about 10.degree. to 80.degree. to the plane of the aperture they define. Accordingly, door members shaped to fit each access aperture and defining correspondingly angled edges may close the access aperture without forming significant spaces between the door members and the aperture-defining edges.
Abstract:
Cleaning of objects from adhering liquid surface treating medium after galvanic and/or chemical surface treatment and recovery of the liquid medium is performed by lifting objects treated in a working container by a drum aggregate, bringing two half shells over the drum aggregate to embrace the latter so that at only a lower region of the drum aggregate a gap remains, and blowing a gas stream through the half shells to the drum aggregate so that an adhered treating medium is removed from the objects and flows directly back to the working container through the gap.