US PATENT SUBCLASS 428 / 385
.~.~.~.~ Metal with weld modifying or stabilizing coating (e.g., flux, slag, producer, etc.)

Current as of: June, 1999
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428 /   HD   STOCK MATERIAL OR MISCELLANEOUS ARTICLES

357  DF  COATED OR STRUCTUALLY DEFINED FLAKE, PARTICLE, CELL, STRAND, STRAND PORTION, ROD, FILAMENT, MACROSCOPIC FIBER OR MASS THEREOF {5}
364  DF  .~ Rod, strand, filament or fiber {9}
375  DF  .~.~ Coated or with bond, impregnation or core {7}
379  DF  .~.~.~ Including metal or compound thereof (excluding glass, ceramic and asbestos) {5}
385.~.~.~.~ Metal with weld modifying or stabilizing coating (e.g., flux, slag, producer, etc.) {2}
386  DF  .~.~.~.~.~> Titanium compound in coating
387  DF  .~.~.~.~.~> Silicic material in coating

DEFINITION

Classification: 428/385

(under subclass 379) Product in which the substrate is a free metal and the coating therearound comprises a composition which affects the seam formed when two pieces of metal are joined by heating or melting the substrate and permitting it to flow into the joint between the metals (i.e., fusion welding).

(1) Note. When welding is performed, the molten metal tends to oxidize and therefore the seam or joint is weakened. The coating composition around the weld rod metal tends to prevent this oxidation by (1) generating a gaseous atmosphere around the fusion bond, (2) producing a slag which will not oxidize, etc. It is in this manner that the coating "affects" the weld to form a better joint or seam.

SEE OR SEARCH CLASS

75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures,

302, for a welding rod or electrode defined by composition only and without significant structure.

219, Electric Heating,

145.1+, and 146.1+ for similar welding rods defined by structure and not merely as a coated rod or by the composition.