Continuous galvanizing apparatus and process
A continuous galvanizing apparatus for rods and process therefor. The apparatus includes a liquid reservoir. A plurality of adjacent tubes each pass into, through, and out of the liquid reservoir. Each of the adjacent tubes has at least one opening within the liquid reservoir so the tubes are in fluid communication with the reservoir. A rod drive mechanism moves a plurality of adjacent rods into, through, and out of the plurality of adjacent tubes. A kettle is provided beneath both the liquid reservoir and beneath the tubes. At least one pump pumps liquid from the kettle to the liquid reservoir so that liquid is continuously cycled to the tubes.
1. A continuous process for simultaneously galvanizing a plurality of rods, the process comprising:
simultaneously passing a plurality of adjacent rods of said plurality of rods to a plurality of adjacent tubes, each of said adjacent tubes passing through an elongated liquid reservoir having a closed base, wherein each of said tubes pass in a transverse direction through said elongated reservoir above a level of said closed base, each of said tubes having a series of slots positioned within said liquid reservoir configured to permit passage of liquid from said reservoir to each of said tubes; and
simultaneously passing said plurality of adjacent rods into and through said plurality of adjacent tubes, wherein each of said tubes has a cylindrical bore throughout, extending from a cylindrical entry opening, to an opposed cylindrical exit opening, and wherein each of said plurality of adjacent tubes has a length shorter than a length of each of said plurality of rods;
passing said plurality of adjacent rods out of said plurality of tubes;
providing an open kettle beneath said liquid reservoir and beneath said plurality of adjacent tubes, wherein said cylindrical entry opening and said cylindrical exit opening of each tube are above said kettle;
permitting liquid in said plurality of adjacent tubes to fall by gravity from said cylindrical entry openings and said cylindrical exit openings to said liquid kettle; and
pumping liquid from said kettle to said liquid reservoir.
2. The continuous galvanizing process as set forth in claim 1 wherein said step of passing said plurality of adjacent rods includes the steps of inserting said plurality of rods into said adjacent tubes with a first motor and a plurality of pinch rollers and extracting said adjacent rods from said plurality of adjacent tubes with a second motor and a plurality of pinch rollers.
3. The continuous galvanizing process as set forth in claim 1 including the additional preliminary steps of:
passing said plurality of adjacent rods simultaneously through an acidic solution; and
rinsing said acidic solution from said plurality of adjacent rods.
4. The continuous galvanizing process as set forth in claim 1 including the additional preliminary steps of:
simultaneously passing a plurality of adjacent rods to a flux station; and
simultaneously applying liquid flux to the plurality of adjacent rods.
5. The continuous galvanizing process as set forth in claim 1 including the additional subsequent steps of:
passing said plurality of adjacent rods through a quench tank to reduce the temperature of said rods; and
passivation quenching of said plurality of adjacent rods.