Showing papers on "Filler metal published in 1969"

Plasma arc welding torch

Abstract: A plasma arc welding torch suitable for welding materials of construction. The torch is characterized in that the head is divided into two sections, each section carrying a different electrical potential, the sections separated by a combination electrical insulator and sealing member. The sealing expedient is effected by coating the opposite sides of the insulator with a metal layer and brazing each of the opposing layers to metal members associated with the two sections of the torch. There is further provided a collar for electrically insulating the torch tip from the nozzle and at the same time serving to aid in dissipating heat generated at the tip.

Welding process preventing the bond brittleness of low-alloy steels

Abstract: This invention is to establish a new welding process for welding a high strength steel, low-temperature service steel or low-alloy steel by first depositing a high notch toughness metal on each root face of a joint, then welding the deposited high notch toughness metal layers and heat-treating the weld bond with the welding heat to prevent weld bond brittleness.

Consumable welding rod for welding chromium steels and the resultant welds

Abstract: The consumable welding rods contain titanium and niobium in amounts such that a weld formed by melting the rod contains titanium niobium in an amount corresponding to the expression 2Ti+ Nb (6-14)C wherein Ti, Nb and C are the proportion of titanium, niobium and carbon in said weld metal. The proportion of titanium and niobium in the welding rod is determined by estimating the total quantity of carbon in the weld metal, the quantities of carbon, titanium and niobium lost by oxidation during welding and the variations in the quantities of titanium and niobium in the weld metal resulting from the welding process.

Electrical resistance welding of coated sheet metals

Abstract: The invention provides a method for the electrical resistance welding of coated sheet metals, in which welding current is fed to at least one of the coated sheets indirectly through the metal layer thereof and contact is established between blank areas thereof to be welded to each other, wherein annular or elongated knife edges are provided at the welding area of the sheet metal to be welded on or on intermediate welding pieces, and cavities are produced by embossing and/or by milling, for preserving an outer coating undamaged by the heat of welding.

Method of and device for plasma arc welding

Abstract: A method and apparatus for plasma arc welding in which an electrically conductive or nonconductive filler wire is fed axially into the plasma arc.

Quality control in resistance welding

Abstract: In a resistance welding process, the rate of displacement of a movable electrode, due to expansion of the heated workpieces between the welding electrodes, is measured in a first part of a welding operation and the current flow is then continued after the said first part for a period which is a function of the result of the measurement.

Preheating and surface preparation for welding

Abstract: A welding method including a preparation step in the form of a scraping operation carried out in quick sequence with welding. Preheating is also accomplished with cold ends for minimal oxidation.

Tack welding torch

Abstract: A tack welding torch adapted to be used in inert-gas-shieldedarc welding. The torch includes a handle means including a selfcontained welding wire supply and means for urging said wire through said handle into contact with metal to be welded. Said torch also includes current control means for energizing said welding wire and insulating shield means disposed around the area to be welded. Mounted within the insulating shield means is an adjustable electrode in proximity to said welding wire.

Forge welding by hi-frequency heating and metal deposition

Abstract: Metal workpieces that are to be joined by welding are brought to or near forge welding temperature by a first heating means such as a high frequency resistance heating means or a high frequency induction heating means. At the same time that the workpieces are being heated to their desired temperature by the first heating means or at a short interval of time thereafter, a stream of hot molten metal droplets from a metallizing type of gun means is directed to and impinges upon the metal workpieces and amount of molten metal of the workpieces in the weld area.

Welding, brazing, and soldering handbook

Abstract: Handbook gives information on the selection and application of welding, brazing, and soldering techniques for joining various metals. Summary descriptions of processes, criteria for process selection, and advantages of different methods are given.

Preionizing welding apparatus

Abstract: Welding apparatus that eliminates the so-called ''''high frequency cracking'''' - while still using high frequency energy to minimize arc extinguishment, and to facilitate the starting of the welding arc.

Protective gas welding process

Abstract: 1,250,572. Welding by fusion. MESSER GRIESHEIM G.m.b.H. 15 Jan., 1969 [14 Feb., 1968], No. 2444/69. Heading B3R. In gas-shielded consumable wire-electrode welding, the shielding gas is a mixture of argon and more than 10% and not more than 25%, by volume, oxygen, the wire electrodes used contain at least 1A0% Mn, by weight, and at least 0A4% Si, by weight, as deoxidizing components. The gas may additionally contain nitrogen (e.g. up to 1 %, by volume) and carbon dioxide as impurities. Example Mn, Si contents of the electrodes are 1A0% Mn, 0A4% Si; 1A6% Mn, 1A1% Si, by weight, the higher contents being used with higher oxygen content in the gas. The electrodes may additionally contain at least one further deoxidizing component selected from Ti, Cr, Al and the rare earths.

Method of making an integrated magnetic memory

Abstract: A method of manufacturing integrated magnetic circuits comprising: the deposition by electrolysis of a ferromagnetic material forming a memory core, on a filler metal, which is easily affected by chemical attack; a further deposition on said material of a further layer of the filler metal and the deposition of conductors on this latter layer; and the dissolving of the filler metal with substitution thereto of an insulating material.

Spot welding process

Abstract: A process for the production of a hollow, stiff, noncircular fabricated steel structural member in which the assembly is accomplished by spot welding. The critical spot weld in this assembly is accomplished by causing the welding current to flow along a sheet metal member then through the sheet metal member and supporting the sheet metal member along which the current flows against columnar collapse by contact with a complementary surface of a welding electrode.

Continuous lay down arc welding method

Abstract: This invention is a continuous lay down arc welding method wherein current supplying points are provided at proper intervals on a connected welding electrode or nonconnected long welding electrode and current supplying apparatus operated by the arc light or arc heat are set so that unmanned welding may be automatically made only by switching the welder.

A thermal model of the spot welding process

Abstract: • A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website. • The final author version and the galley proof are versions of the publication after peer review. • The final published version features the final layout of the paper including the volume, issue and page numbers.

Improvements in or relating to Welding Thermocouples

Abstract: 1,162,137 Welding by fusion; making thermocouples UNITED KINGDOM ATOMIC ENERGY AUTHORITY 21 Oct, 1966 [4 Nov, 1965], No 46871/65 Headings B3A and B3R [Also in Divisions H2 and H5] In welding the casing 7 of a thermocouple 1 by the heating effect of electrons derived from a plasma arc generator 3; the sealing of the casing 7 stops current flowing through a circuit ineluding a wire 6 of the thermocouple and the arc plasma and this is detected and automatically causes the welding to be stopped Six thermocouples are mounted in one end of a glass enclosure 2 connected through a buffer volume 10 to a vacuum pump 11 The plasma arc generator 3 using argon is located at the other end of the enclosure 2 and the plasma is directed towards a steel deflector 4 having a concave end 5 Flow of electrons to the workpieces is controlled by the voltage applied to them The wires 6 are connected in turn through switch 36 to a battery 44 which provides a preheating current and charges a condenser 42 which provides the welding current The casings 7 are welded by connecting them in turn by a switch 37 to a generator 46 producing a steadily increasing voltage A checking circuit from a source 47 through a wire 6 and the plasma to the anode 12 of the plasma generator 3 is broken when the end of the casing closes due to fusion, whereupon a trip device 48 disconnects the generator 46 after a predetermined delay The thermocouple cables are prepared for welding by drilling out the magnesium oxide insulation and the wires 6 to a depth of 1 mm, removing a further 05 mm of the oxide insulation and bending the wires towards each other The plasma arc generator consists of an insulating block 21, Fig 2, mounting a conductive insert 25 carrying a tungsten cathode 14 An annular silver anode 12 is held by a threaded boss 13 against an alumina sleeve 20 surrounding the cathode 14 Cooling water inlet and outlet pipes 18, 19 are provided and argon is fed through a tube 27 A starting electrode is located downstream of the anode 12

Improved table for cutting and welding

Abstract: Welding table covered with parallel inverted steel angles improves metal torch cutting of various types and thicknesses.

Method and materials for welding

Abstract: This application discloses a method and materials including a welding rod and flux for welding nodular cast iron.

Welding of Very Thin Foil

Abstract: Electron beam welding method for very thin foils, discussing welding of pinhole free Ni, Cu and stainless steel foils

Vacuum diffusion welding of sintered materials to low-carbon steel

Abstract: 1. A radically new process has been developed for producing relief pictures by vacuum diffusion welding, which combines the operations of powder compaction, sintering, and weld-bonding. 2. The optimum process parameters have been established experimentally for welding steel 15 to sintered PNE nickel and sintered PZh2M2 iron.