Metal fusion bonding – Process – Repairing – restoring – or renewing product for reuse
Patent
1982-03-08
1984-10-16
Godici, Nicholas P.
Metal fusion bonding
Process
Repairing, restoring, or renewing product for reuse
436 5, 436 83, B23B 120, B23P 604
Patent
active
044770090
ABSTRACT:
A process of identifying and cleaning carbide entities. In the preferred embodiment of this invention, a visual indicating reacting composition is placed in a tank. An example of such a compound is a weak solution on the order to magnitude of one tenth molar or less of copper sulfate. After preparation of this bath, a large plurality of used tungsten carbide tools are dumped into the bath. Tools are allowed to sit in the bath for periods extending from five seconds to several hours depending on the strength of the bath and the thickness of the coating. When a characteristic orange color appears on a significant plurality of the tools sitting in the bath, the tank is drained of the copper sulfate solution and the tools are dumped upon a flat surface for visual inspection and segregation of the copper colored tools from the clear ones. After segregation, the copper colored tools are placed in a second bath. The second bath comprises a weak acidic solution with pH of the order of magnitude of less than 7 and more than 5. Extremely dilute acid such as nitric acid may be used in such a bath. In the second bath, once the copper colored tools are placed in the bath, the acid reacts with the copper colored reactant on the tools to dissolve said reactant and render the tool clear and clean. In this bath other contaminants or foreign matter are removed from the surface of the tool.
REFERENCES:
patent: 3373114 (1968-03-01), Grunwald
patent: 3565688 (1971-02-01), Costelloe
patent: 3652225 (1972-03-01), Coffin, Jr. et al.
patent: 3833414 (1974-09-01), Grisik et al.
patent: 3891456 (1975-06-01), Hohman et al.
patent: 4059884 (1977-11-01), Weill
Godici Nicholas P.
Jordan M.
Maxon David A.
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