The Lincoln Electric Company

Lincoln Global, Inc.

Dennis D Crockett

Robert P Munz

Ronald F Young

Ronald J Gordish

Robert J Weaver

Bruce E Fulmer

Karl J Kulikowski

Teresa Melfi

Robert J Sowko

A welding flux that includes a flux agent and a binder. The binder includes a colloidal binder formed from small particles of silicon dioxide. The binder can be dried at lower temperatures to thereby for a greater range of fluxing agents and/or metal alloys to be included in the welding flux. The colloidal binder can constitute 100 percent of binder or form only part of the binder.

Flux binder system

A method of welding together two steel plates with a thickness greater than about 3/8 inches from one side of the plates, the method comprising the steps of: tapering a generally straight edge of the plates to form an included angle in the range of about 40-60.degree. with a nose at the protruding portion of each edge; positioning the plates with the edges spaced from each other to define an elongated channel with the nose of each edge at the bottom of the channel and spaced from each other to define an elongated generally straight gap with a width g; moving an electrode having a diameter of less than approximately 0.05 inches at a wire feed speed of at least about 450 inches per minute along and in the channel and slightly above the bottom noses; applying a DC current passed between the electrode and the noses to cause an arc welding process to melt the electrode and the noses to form a root pass in the lower area of the channel at the gap and between the edges of said plates; controlling the DC current to control the output in a desired fashion to deliver a set of current pulses, the pulses being formed at a given rate and by a multitude of closely spaced current segments having controlled magnitudes to determine, with the rate, the energy delivered by the current pulses; and, adjusting travel speed to accommodate variations in the gap between the plates being joined and/or the current pulses to prevent overheating at the root pass.

Method of arc welding heavy steel plates

A cored electrode for gas shielded arc welding to deposit a weld metal bead, where the electrode has a core of fill material surrounded by a ferrous tube with the fill material having alloying agents and oxide fluxing ingredients including, by weight of fill material, 40-60% titanium dioxide, 0.3-0.5% boron oxide, and 1.0-5.0% aluminum powder, with the aluminum powder having a higher affinity for oxygen than the oxide fluxing ingredients and with the amount of aluminum powder selected to produce 0.02-0.08% titanium, less than 0.002% boron and less than 0.10% aluminum in the weld metal.

Flux cored gas shielded electrode

A consumable welding electrode for electric arc welding in a shielding gas and producing reduced amounts of fume during said welding comprising in combination a steel sheath and a filler within the sheath. The filler including metallic aluminum powder and a dual stabilizing agent of sodium oxide and potassium oxide, wherein the dual stabilizing agent and said aluminum have about a 2.4:1 to 3.5:1 weight ratio.

Cored electrode with fume reduction

A high manganese weld bead and electrode for producing same which has higher abrasion resistance and hardness than heretofore and is economical to manufacture. The deposit contains approximately 0.4-0.7% C, 10-16% Mn and 4.5 to 7.5% Cr.

High manganese containing weld bead and electrode for producing same

An improved consumable electric arc welding electrode having an outer ferrous metal sheath, such as a low carbon steel sheath, which is formed around a generally concentric core of compressed particulate fill material to be used for depositing an all weld metal of steel in multiple passes with a minimum tensile strength of about 72,000 psi and a minimum elongation of about 22 percent wherein the fill material includes aluminum in an amount greater than about 1.50 percent of the total electrode weight to provide a correlated amount of aluminum in the deposited metal. This improvement involves a particulate fill material producing a combination of nickel and manganese content in the range of 2.5-4.0 percent by weight of the total electrode with the nickel being greater than about 0.5 percent, the manganese being in the range of 0.7-2.0 percent and both the aluminum and the carbon in the fill material being properly controlled whereby the deposited all weld metal, when the sheath and core materials are melted and deposited, has a percentage by weight of aluminum greater than about 1.20 percent and a percentage of carbon by weight of less than about 0.12 percent.

Consumable welding electrode and method of using same

An agglomerated submerged arc welding flux which offers the advantages of an agglomerated flux, namely lower cost, increased impact strength, greater formulation flexibility and operator appeal while, in other respects, performing like a fused flux, namely providing: high speed; high penetration; and low bead profile characteristics. The flux contains relatively large amounts of calcium oxide and titanium dioxide as essential ingredients together with other known fluxing ingredients in lesser amounts.

High penetration, high speed, agglomerated welding flux

An agglomerated submerged arc welding flux which results in low weld metal oxygen and the concomitant high impact values while retaining the good welding characteristics of the lower basicity (acid) fluxes such as welding at higher speeds on various joint configurations with less undercutting and slag entrapment along with good slag removal. The flux contains high percentages of calcium fluoride and aluminum oxide in combination with other ingredients having a limited amount of available oxygen and sufficient acid components to lower the basicity index of the flux below 1.25. Additionally, no potent deoxidizers such as magnesium, titanium or aluminum are required.

Submerged arc welding flux

An agglomerated welding flux especially designed to produce tandem arc seam welds having low profiles, increased penetration, and minimal undercutting. The flux includes: aluminum oxide and silicon dioxides in the form of kyanite; magnesium oxide; and, manganese oxide.

Growing community of inventors

Mentor, OH, United States of America

Dennis D Crockett