Sticking coefficient of adatoms. Melting point of MgO is relatively high. The composition contains calcium carbonate as its major ingredient together with a sodium or potassium silicate binder. The composition was produced from the following materials: 48 wt.% CaCO 27 wt.% ZrSiO wt.% Na AlF 6 wt.% Na O:Si0 1 wt.% K O:SiO,; 4 wt.% Si0 and 2 wt.% each of FeCr and FeSi. Cos Flux: A chemical composition critical to the heat joining methods of soldering, brazing, and welding because it is a substance that aids, induces, or otherwise actively participates in fusing or flowing. It is well known that the slag and metal do not reach equilibrium during fluxshielded welding, due to the short reaction times and large thermal gradients inherent in the process. Al2O3 is added in the form of corundum and bauxite. ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNION CARBIDE CORPORATION, A CORP OF NY. The effects of wire/flux combination on the chemical composition, tensile strength, and impact toughness of the weld metal were investigated and interpreted in terms of element transfer between the slag and the weld metal, i.e., ∆ quantity. Like FCAW, SMAW uses flux to protect the weld pool from damaging atmospheric gases – the only difference is that in SMAW the flux coats the … Each bead was made with 30 volts in each wire with 450 amperes and a travel speed of ipm. flux compositions depending on the weld streng ths they intend to achieve; this being the criterion for developing their own unique flux compositions. As a basic oxidant, CaF2 could increase basicity of slag and improve low temperature impact toughness of weld metal. Interdiffusion between the adatoms and the substrates. EXAMPLE ll Two and one-half inch thick ASTM 304 stainless steel plates were welded using the submerged arc process. 6 weight per cent Sodium Silicate 1 weight per cent Potassium Silicate 4 weight per cent SiO, 2 weight per cent FeCr 2 weight per cent FeSi, 2. Review on effect of flux composition on its behavior and bead geometry in submerged arc welding (SAW) Brijpal Singh1, Zahid Akthar Khan2 and Arshad Noor Siddiquee2 1Department of Mechanical Engineering, Maharaja Surajmal Institute of Technology, C-4, Janakpuri, New Delhi, 110058, India. ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNION CARBIDE CORPORATION;REEL/FRAME:004436/0460. There a pretty good selection and variety of Welding rods.a 7018 rod.E7018 Welding rod is used for SMAW. The next letter, 'L', 'M' or 'H' indicates a low (0.6% max), medium (1.4% max) or high (2.2% max) manganese content. Thus, if CaO could be rendered nonhygroscopic, CaCO, would be a desirable flux ingredient especially for welding or surfacing of stainless steel alloys. For shielded metal arc welding (SMAW), the flux covered electrode ECuNi is used with direct current electrode positive (reverse polarity). Dewayne Rutledge Assistant Examiner-G. T. Ozaki Attorney-Harrie M. Humphreys and Dominic J. Terminello [57] ABSTRACT 2 Claims, No Drawings WELDING FLUX COMPOSITION This invention relates to welding compositions or fluxes of the bonded type; more particularly, this invention relates to a bonded welding flux for welding stainless steel or surfacing low alloy steels with stainless steel by the submerged arc process. Shell Internationale Research Maatschappij B.V. Lincoln Global, Inc., A Delaware Corporation, Jiangsu University Of Science And Technology, L-TEC COMPANY, 666 THIRD AVENUE, NEW YORK, NY 100, ASSIGNMENT OF ASSIGNORS INTEREST. It can also be mixed with a certain percentage of silicates. Topic Welding Industry / Technical Discussions / Flux composition By dalipmengi Date 07-01-2007 09:17 To manufacture general purpose, all position, medium coated, rutile based, mild steel E6013 welding electrode what should be the ideal composition of various ingredients like rutile, ilmenite, china clay, feldspar, LC ferro manganese, Cellulose, Starch, iron powder, TiO2 Pigment, … Cl ..B23k 35/38 [58] Field of Search 148/24, 26, 23; 219/73 [56] 7 References Cited UNITED STATES PATENTS 3,328,212 6/1967 Coless ..l48/26 3,551,217 12/1970 c61ess.....' ..14s/'26 3,480,487 11/1969 Coless et a1 ..l48/26 2,814,579 11/1957 Stringhametal... ....l48/26 2,895,863 7/1959 Stringhametal... ....148/26 3,340,107 9/1967 1311116856181. 16. Solar Flux is a complex chemical compound in the form of a very fine powder. However, specific welding flux compositions within the standard limits depend on the particular manufacturer and raw materials available. This article discusses some of the characteristics of wires and fluxes. 15-25% SiO2 ,(ZrSiO about 4 weight percent to about 20 weight percent cryolite (Na,AlF,) and at least one-silicatetaken from the class of silicates consisting of potassium and sodium silicates present in the amount of from about 4 to about 10 dry weight percent. The following are typical weld performance examples using 7 the composition of the invention. 5 4 10 14 Sodium Silicate 8 4 6 8 Potassium Silicate 4 2 MgO l0 20 FeSi 2 2 FeCr 3 1 SiO, 8. Contact: Mr. Charlie These assignments have been based on comparable base metal characteristics, such as: Composition The mixture is passed through a rotating kiln where it is heated to a temperature between 1,450" F. and 1,800? They are available in various ratios of alkali to silica in both powdered andliquid forms. When MgO content is higher than 30%, it makes weld bead formation bad. 4.04.2.3 Ni-Base Welding Alloys. When SiO2 content is higher than 20%, submerged arc welding flux could transfer Si to weld metal. Tests prove that, when MgO content is higher than 30%, slag detachability goes bad. Flux materials containing sufficiently low con-centrations of NORM are not subject to federal radiation control regulations. Assignors: L-TEC COMPANY A NY LIMITED PARTNERSHIP. Assigned to SECURITY PACIFIC BUSINESS CREDIT INC., A DE CORP. SECURITY PACIFIC BUSINESS CREDIT INC., A DE CORP. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Add: Zhongling Village, Dayugou Town, Gongyi City, Henan Province, China. Specific flux compositions contain large quantities of titanium oxide, which is also known as rutile. Self-shielded flux-cored wires are commonly abbreviated as FCAW-S wires, with the “S” at the end notifying operators of their self-shielding capabilities. For example, other metals are Nickel, Columbium, Molybdenum, Manganese, Titanium, Calcium, Vanadium, Cobalt and Aluminum. For gas metal arc welding, the wire is classified using 100% CO 2; however, argon-oxygen-carbon dioxide combinations may EXAMPLE I lows: two /32 inch diameter 3091. wires were connected in a series AC circuit. The resultant weld pool has a sufficiently high oxygen level to produce a slightly convex or flat weld joint profile. Weldability of reinforcing steel and compatibility of welding procedures need to be considered and closely supervised when manual arc welding of reinforcing steel is required. Check for proper alignment. 4130 chrome-moly can be welded with the TIG or MIG process. An externally supplied shielding gas is sometimes used, but often the flux itself is relied upon to generate the necessary protection from the atmosphere, producing both gaseous protection and liquid slag protecting the weld… ;ASSIGNOR:UNION CARBIDE CORPORATION;REEL/FRAME:004436/0460, Owner name: SECURITY PACIFIC BUSINESS CREDIT INC., A DE CORP. Free format text: Fluxes for soft soldering are typically of organic nature, though inorganic fluxes, usually based on halogenides and/or acids, are also used in non-electronics applications. To reduce the number of welding and brazing procedure qualifications required base metals have been assigned P-Numbers by the ASME BPVC. Postcode: 451271 [5].Standard welding flux composition ranges exist [6]-[8]. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents. ;ASSIGNOR:UNION CARBIDE CORPORATION, A CORP OF NY. Slag Inclusion. B23K35/3601—Selection of non-metallic compositions, e.g. °C (°F) 150 °C 150 °C Experimental study on effect of flux composition on element transfer during submerged arc welding BRIJPAL SINGH1,*, ZAHID A KHAN2, ARSHAD NOOR SIDDIQUEE2 and SACHIN MAHESHWARI3 1Department of Mechanical Engineering, Maharaja Surajmal Institute of Technology, New Delhi 110058, India 2Department of Mechanical Engineering, Jamia Millia Islamia, New Delhi 110025, India 5. The chemical analysis of the deposit was as follows. Chemical compositions: 1. to make the flux sticky at low temperature so it can be easily applied. Submerged arc welding fluxes are generally referred to as fused fluxes or bonded fluxes. The flux also affects the chemical composition of the weld metal, the weld bead shape, and the mechanical properties of the weld. The next article will review the specifications. B23K35/3602—Carbonates, basic … Welding, technique used for joining metallic parts usually through the application of heat.This technique was discovered during efforts to manipulate iron into useful shapes. In this article, we summary the influences of each welding flux component (agglomerated flux) on welding performance, especially when basicity is within 1.0-2.2. The fused slag was free-peeling. This discovery was used in the development of a flux system comprising 30 to 60 weight percentCaCO, for surfacing low alloy steels with stainless steel. Mobile/Whatsapp/Wechat: +86 18530036598 As will be noted .from the above table, other ingredients such as MgO may be used in conjunction with the slag forming ingredients to produce desired flux systems according to the teaching of this invention.
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