Cored welding electrode and methods for manufacturing the same

Abstract

A manufacturing method is presented for manufacturing cored welding electrode, including provision of a cored electrode structure with core fill material substantially enclosed within a sheath material, and application of a sodium based feeding lubricant to the cored electrode structure. A cored welding electrode is provided, including a tubular sheath material with a center core area, a core fill material within the core area, and a sodium based lubricant coating on the sheath material, wherein the lubricant comprises sodium sulfate, sodium carbonate, and / or sodium nitrite.

Description

technical field [0001] The present invention relates generally to arc welding technology, and more particularly to cored electrodes and methods of manufacture. [0002] references [0003] Cored electrodes and methods of manufacture are described in the following U.S. patents and published applications, the contents of which are incorporated herein by reference for background information: Weed 1,525,840, Lincoln 1,722,929, Bernard 2,785,285, Sjoman 2,944,142, Woods 3,534,390, Gonzalez 3,947,655, Gonzalez 4,286,293、Puschner 4,305,197、Amata 4,551,610、Holmgren 4,629,110、Chai 4,717,536、Munz 4,723,061、Marshall 4,800,131、Crockett 4,833,296、Chai5,003,155、Crockett 5,015,823、Chai 5,055,655、Chai 5,118,919、Kotecki5,120,931、Gordish 5,233,160、Crockett 5,365,036、Kulikowski 5,369,244、 Araki5,821,500、Kramer 5,973,291、Inoue 6,079,243、Pan 6,103,997、Shimizu6,337,144、Kotecki 6,399,209、Stava 6,365,864、Hughes 6,674,047、Kelly6,750,430、Nikodym 6,855,913、Matsuguchi US 2005 / 0044687 A1以及Kim US2005 / 0077...

AI Technical Summary

Problems solved by technology

However, conventional metal cored electrodes used in the gas shielded method typically do not include an arc stabilizing component within the core

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