Showing papers on "Filler metal published in 1971"
Patent•
20 Sep 1971
TL;DR: In this paper, a combination welding torch for electric arc welding utilizing a consumable electrode interchangeable with elements for inert gas shielded arc welding using a non-consumable electrode, and connection means are provided for use in the welding torch apparatus, to thereby provide a unitary welding torch usable interchangeably for performance of welding operations.
Abstract: A combination welding torch. Adapter means are provided for electric arc welding utilizing a consumable electrode interchangeable with elements for inert gas shielded arc welding utilizing a non-consumable electrode, and connection means are provided for use in the welding torch apparatus, to thereby provide a unitary welding torch usable interchangeably for performance of welding operations.
41 citations
Patent•
10 Dec 1971TL;DR: In this paper, a method for ultrasonic welding of wires comprising a non-metal insulating layer on the metal surface of a support by means of a welding tip which is made to vibrate in a direction parallel to the longitudinal direction of a wire to be welded is presented.
Abstract: A method of and a device for the ultrasonic welding of wires comprising a non-metal insulating layer on the metal surface of a support by means of a welding tip which is made to vibrate in a direction parallel to the longitudinal direction of a wire to be welded; according to a previously programmed welding cycle, the insulating layer is first removed locally and the wire is then welded; a preceding mechanical or chemical cleaning of the wires is not necessary. The method according to the disclosure provides a welded joint which has compact dimensions and a high mechanical strength.
35 citations
Patent•
03 Dec 1971
TL;DR: A tubular composite welding wire for use in the automatic or semi-automatic welding process is described in this article, which consists of two parts: a tubular wire and a wire tube.
Abstract: A tubular composite welding wire for use in the automatic or semi-automatic welding process, which comprises:
29 citations
Patent•
14 Dec 1971
TL;DR: An explosive welding process for bonding at least one cladding metal sheet to a base metal sheet, by driving one of the two metallic sheets toward the other by the collision impact of a driver plate to said one sheet, is described in this article.
Abstract: An explosive welding process for bonding at least one cladding metal sheet to a base metal sheet, by driving one of the two metallic sheets toward the other by the collision impact of a driver plate to said one sheet. The collision of the driver plate is actuated by the detonation of an explosive layer disposed on its surface.
18 citations
Patent•
16 Sep 1971
TL;DR: In this paper, a method for the connection of sheet metal panels coated on at least one surface with a layer by the electrical fusion of a metal was proposed, wherein the improvement comprises the steps of supplying an electric current for the fusion of metal indirectly along the sheet metal of at least 1 panel to the zone at which said panels are to be connected to each other, and keeping the temperature of an outer layer of one of said panels below the melting point of said layer.
Abstract: A method for the connection of sheet metal panels coated on at least one surface with a layer by the electrical fusion of a metal, wherein the improvement comprises the steps of supplying an electric current for the fusion of metal indirectly along the sheet metal of at least one panel to the zone at which said panels are to be connected to each other, and keeping the temperature of an outer layer of at least one of said panels below the melting point of said layer.
17 citations
Patent•
27 Apr 1971
TL;DR: An austenitic stainless steel which is suitable for use as a filler metal in gas shielded arc welding and a gas-shielded arc welding process employing said steel as filler metal is described in this paper.
Abstract: An austenitic stainless steel which is suitable for use as a filler metal in gas shielded arc welding and a gas shielded arc welding process employing said steel as a filler metal. The steel consists essentially of, in weight percent, up to 0.1 percent carbon, 7.5 - 16.0 percent manganese, up to 1.0 percent silicon, 17.5 - 26.0 percent chromium, 5.0 - 17.0 percent nickel, 0.75 4.0 percent molybdenum, 0.2 - 0.38 percent nitrogen, balance iron and incidental impurities, and is additionally limited as follows: 1. The ratio of austenitizing elements to ferritizing elements is greater than 1 in accordance with the following expression:
15 citations
Patent•
29 Dec 1971
TL;DR: A welding control device for controlling voltage, current and gas flow rate for a gas tungsten arc welder type welding unit is described in this article, where a motor driven rheostat current decay control is provided to prevent abrupt weld cut-off.
Abstract: A welding control device for controlling the voltage, current and gas flow rate for a gas tungsten arc welder type welding unit. A motor driven rheostat current decay control is provided to prevent abrupt weld cut-off. The remote console unit comprises a current preset means, a gas control, a voltmeter and ammeter to maintain the voltage and current as well as a filler metal feeding means. The metal filler means is located on and attached to the forward portion of the two button decay control switch.
14 citations
Journal Article•
TL;DR: In this article, the mechanisms by which brazing occurs are discussed for conventional dip, torch, and furnace brazings with salt fluxes and for some newer "fluxless" Brazing methods such as vacuum basting employing metal activators, halide vapors, or prolonged heating at elevated temperatures.
Abstract: Understanding the mechanisms by which brazing occurs is one of the keys to improving methods for brazing aluminum. The mechanism generally differs for each aluminum brazing method but always involves opening pathways through the oxide films for the flow of filler metal. The ways in which this is accomplished are discussed for conventional dip, torch, and furnace brazing with salt fluxes and for some newer "fluxless" brazing methods such as vacuum brazing employing metal activators, halide vapors, or prolonged heating at elevated temperatures.
10 citations
TL;DR: In this article, the effect of nitrogen partial pressures in the welding atmospheres of N2, N2-Ar, N 2-O2, Air and N2CO2 was systematically studied.
Abstract: Mild steel and stainless steel were welded in controlled arc atmospheres.Effect of nitrogen partial pressures in the welding atmospheres of N2, N2-Ar, N2-O2, Air, N2-CO2 or N2-H2 and welding polarity on the nitrogen content of weld metals was systematically studied.The main results obtained are summarized as follows:1. The nitrogen content of weld metals made in neutral or reducing atmospheres such as N2-Ar or N2-H2 increases with the increase of the partial pressure of nitrogen.2. The co-existence of oxidizing gas with N2 in the arc atmosphere increases greatly the nitrogen content of weld metals.3. Anomalous absorption of nitrogen was observed at low pressures of the arc atmospheres.4. The nitrogen content of mild steel weld metals made in N2, N2-Ar, or N2-H2 welding atmospheres is not influenced by welding polarity, while the nitrogen content of stainless steeel weld metals made with DCSP is more than that with DCRP.5. In oxidizing atmospheres such as N2-O2 or N2-CO2, weld metals absorb much more nitrogen with DCRP than with DCSP.
10 citations
9 citations
01 Mar 1971
TL;DR: Forge phase rigid and plastic region model of friction welding, deriving interfacial dispersion parameter of weld quality optimization is presented in this article, where the model is extended to the case of welding.
Abstract: Forge phase rigid and plastic region model of friction welding, deriving interfacial dispersion parameter of weld quality optimization
Patent•
17 Dec 1971TL;DR: In this article, a reaction silicate coating is used to extend the useful life of welding electrodes by reducing pickup of aluminum on the electrode. But this coating is not suitable for spot welding of aluminum sheets.
Abstract: Resistance welding such as spot welding of aluminum sheets and the like is greatly enhanced by the provision of a reacted silicate coating which substantially extends the useful life of welding electrodes by reducing pickup of aluminum on the electrode.
Patent•
14 Dec 1971
TL;DR: In this paper, a method of producing large rotatable steel parts with circular cross-sections for construction of large machines such as shafts of generators and turbines is described. But this method requires a large number of rotating parts.
Abstract: A method of producing large rotatable steel parts with circular cross-sections for construction of large machines such as shafts of generators and turbines. In a first stage a welding process is effected under a welding head for production of a weld connection in the central region of a welding gap between the parts. This central weld is subsequently circularly machined and the remaining peripheral groove is widened and formed of V shape. The parts are then welded at the groove, while the parts are rotated, by use of a welding process with a granulated welding flux.
Patent•
15 Jan 1971
TL;DR: In this paper, the authors presented a chemical wELDing compositions of a POWDERED LIGHT METAL and a METAL OXIDE MOLDED under pressure into a solid form.
Abstract: THE INVENTION PROVIDES A CHEMICAL WELDING COMPOSITION MATERIAL OF A POWDERED LIGHT METAL AND A METAL OXIDE MOLDED UNDER PRESSURE INTO A SOLID FORM, THEREBY PRODUCING A MATERIAL CAPABLE OF PROVIDING CONCENTRATED HEAT TO WELD WORKS QUICKLY, AND ENSURING ADAPTABILITY OF THE COMPOSITION MATERIAL FOR WORKS DIFFICULT TO WELD, SUCH AS WITH DEEP HOLES, NARROW CURVED PARTS, OR LENGTHY WORKPIECES, WITHOUT NEED FOR SPECIAL PROCEDURES OR TOOLS.
Patent•
16 Jun 1971
TL;DR: In this article, the wires to be welded are clamped and spaced apart symmetrically, held in holders whicha re at the welding potential and the ends are burnt for a brief period by passing them over the WIG arc.
Abstract: The wires to be welded are clamped and spaced apart symmetrically, held in holders whicha re at the welding potential and the ends are burnt for a brief period by passing them over the WIG arc. The electrode is passed over the wire ends at constant velocity and at the same distance from the wire ends of pairs of wres to be welded, or connecting lugs. The arc is pref. obtained from a WIg welding torch.. As the electrode passes over the pairs of wires for welding, it jumps from one pair to the next. Alternatively, if the electrode is stationary the wires move.
Patent•
18 Aug 1971
TL;DR: In this article, a process and arrangement of elements for welding explosive plated metal sheets which substantially eliminate the formation of cracks when the weld is exposed to mechanical stresses is described, but the present disclosure relates to a process that is different from the one described in this paper.
Abstract: The present disclosure relates to a process and arrangement of elements for welding explosive plated metal sheets which substantially eliminate the formation of cracks when the weld is exposed to mechanical stresses.
Journal Article•
TL;DR: In this article, the minimum mechanical requirements of E.H.2 steel can be achieved in weld metal not subjected to grain refinement by multi-pass welding procedures using neutral all-mineral flux and alloyed wires.
Abstract: The results obtained during this investigation show that the minimum mechanical requirements of E.H.2 steel can be achieved in weld metal not subjected to grain refinement by multi-pass welding procedures. The use of alloying additions to the weld metal brings about further improvements to these properties, particularly the recorded impact values. The use of neutral all-mineral flux and alloyed wires imparts a definite robustness to the process for use under production conditions, as well as providing the operational characteristics being sought. Although the consumables examined and principles involved were developed for a specific shipbuilding problem, there are many other spheres to which they could be applied.
TL;DR: Underwater welding was experimentally carried out in a water box by coated electrodes and semiautomatic CO2 welding as mentioned in this paper, and it was investigated the occurrence of blowhole was affected by various welding parameters.
Abstract: Underwater welding was experimentally carried out in a water box by coated electrodes and semiautomatic CO2 welding. And It was investigated the occurrence of blowhole was affected by various welding parameters.The following results were obtained:1) Sound deposited metal and welded joints were obtained under flat, horizontal and vertical positions from every coated electrode except the low hydrogen type one. Kinds of power sources and water proofing coatings of electrodes had no special effect on appearance and soundness of bead.2) Welded joints by coated electrodes were superior in tensile strength but inferior in ductility to the mild steel base metal.3) It was difficult to get a sound weld metal by low hydrogen type electrode under water. Blowholes in weld metal were remarkable in all welding current and arc voltage ranges.4) It was also considerably difficult to obtain a weld metal quite free from blowholes by underwater semiautomatic CO2 welding.
Patent•
21 Apr 1971
TL;DR: In this paper, a method and apparatus for fillet welding in which a pair of welding rod holders are provided on a feeding device so as to press welding rods on both parts to be welded and on both sides of one of them.
Abstract: A method and apparatus for fillet welding in which a pair of welding rod holders are provided on a feeding device so as to press welding rods on both parts to be welded and on both sides of one of them.
Patent•
12 Apr 1971TL;DR: An arc stud welding method providing a metal piece between a stud and a base metal for generating an arc and for deoxidation so as to improve the arc generation effect while protecting the arc from the atmosphere whereby the characteristics of the welded metal is improved.
Abstract: An arc stud welding method providing a metal piece between a stud and a base metal for generating an arc and for deoxidation so as to improve the arc generation effect while protecting the arc from the atmosphere whereby the characteristics of the welded metal is improved. Further, using said metal piece the length of the arc can be maintained as constant so that the uniformity of the stud welding is improved.
TL;DR: Methods of fume extraction have been developed for use when welding steels coated by hot dip galvanizing, by zinc metalizing, or with zinc-rich paints, for gas-shielded metal arc processes a fume extractor has been developed which surrounds the welding gun so that fumes are removed close to their point of origin.
Abstract: Methods of fume extraction have been developed for use when welding steels coated by hot dip galvanizing, by zinc metalizing, or with zinc-rich paints. For gas-shielded metal arc (e.g., MIG-CO2 welding) processes a fume extractor has been developed which surrounds the welding gun so that fumes are removed close to their point of origin. The zinc oxide fumes, which are completely removed, can be exhausted to the outside atmosphere, or they can be collected.
TL;DR: In this article, the authors present a list of the top 10 most important locations in the world for the first time:1.2.3.4.5.6.
Abstract: 固相圧接における後熱温度,後熱時間,接合変形度の影響を検討した結果,次のような結論を得た.1.後熱処理による接合状況の進行過程は,後熱温度,後熱時間,接合変形度によって左右され,アレニウスの式を満足する.2.後熱初期の回復現象によって起る接合部に残留する弾性応力の緩和と,さらには後続する再結晶現象によって,接合境界の原子の移動,再配列が進み接合強さは向上する.3.接合境界状態の改善と母材の軟化現象との総合効果によって,継手の機械的性質は決定し,材質,接合変形度,温度によって定まるほぼ一定の後熱時間で最大値がえられた.4.後熱温度が高くなると,空洞の球状化および集合が起る結果,軟化によって低下した接合強さに再び増加が認められ,接合変形度の差の影響はなくなる傾向にある.
TL;DR: In this article, a laser welding of wire to film, as in ordinary welding, the fused metal has an irregular acicular structure, and recrystallization processes occur in the heat-affected zone.
Abstract: In laser welding of wire to film, as in ordinary welding, the fused metal has an irregular acicular structure, and recrystallization processes occur in the heat-affected zone. Part of the chromium sublayer is dissolved in the copper, and chemical compounds with a high strength are formed from copper and the glass and ceramic substrates.