Abstract: A ceramic flux for welding low-alloy steels contains calcined magnesite, synthetic slag containing two thirds of CaF.sub.2 and one third of Al.sub.2 O.sub.3, a component containing at least 95% of Al.sub.2 O.sub.3 in the alpha form, wollastonite, marble, barium fluoride, ferrotitanium, ferroboron, sodium silicate.The ratio of the total content of calcined magnesite, two thirds of synthetic slag and one half of wollastonite to the total content of the component containing at least 95% of Al.sub.2 O.sub.3 in the alpha form, one third of synthetic slag, one half of woolastonite and two thirds of sodium silicate ranging from 1.30 to 1.43 and the ratio of titanium to boron ranging from 11.2 to 30.1.

Abstract: The process of the invention comprises feeding molten cast iron into a metal receptacle, continuous feeding of magnesium in a steel sheath into the molten cast iron at a rate ensuring the content of masgnesium in the material of a shaped casting witin the range of about 0.03 to about 0.06 mass %, shaping a casting in a mould, and drawing thereof from the mould.

Abstract: In a wire coiling machine, wherein wire is continuously formed into coils, comprising a wire bundling assembly mounted on a frame and including a coil forming capstan and an accumulator drum axially mounted under the capstan and surrounded by a rotatable enclosure an improvement which comprises a wire cutting assembly including a percussion cutter unit mounted on the frame for rotation around a vertical axis and an anvil formed as a ring mounted on either the capstan or the accumulator drum and having a surface of revolution for taking an impact load from the cutter unit when the wire is cut at the instant a bundle of wire coils has been deposited. A wire receiving arrangement known to the art is placed below the wire bundling assembly to receive wire coils that have been laid in bundles.

Abstract: A core flux composition of a flux-cored wire for welding and surfacing high-strength steels with a gas-shielded process comprises the core flux ingredients taken in the following amounts, by weight %:______________________________________ rutile concentrate 14.0-23.0 fluorite concentrate 7.0-12.0 sodium fluosilicate 2.0-6.0 ferromanganese 6.0-10.0 ferrosilicon 1.5-4.0 ferromolibdenum 1.0-2.5 chromium (elemental) 1.0-2.5 nickel (elemental) 4.0-9.0 iron powder 31.0-63.

Abstract: A method and apparatus for welding girth joints in pipelines using two welding heads comprises the steps of moving each of the welding heads upwards around the pipeline along the respective section of the girth joint, feeding a welding wire to each of the welding heads so that the welding wire is fed substantially tangentially with respect to the surface of the pipe, and forming a circumferential weld by moulding it to hold the molten metal of the welding bath in the welding zone. An apparatus for carrying out the method for welding girth joints in pipelines comprises an annular track structure having at least two carriages mounted thereon which are connected with drives adapted to impart a translatory motion to the carriages. Each of the carriages carries a welding head provided with a welding wire feeder and a weld moulding member arranged opposite to the joint being welded.

Abstract: Core flux composition of a flux-cored wire for welding and surfacing steels with a gas-shielded process contains the core flux ingredients in the following amounts, by weight %:______________________________________ rutile concentrate 20-40 fluorite concentrate 0.6-8.5 ferromanganese 13.5-18.5 ferrosilicon 1.6-2.7 nepheline concentrate 0.5-7 cryolite 0.6-4.

Abstract: Flux composition for a flux-cored wire to be used for welding and surfacing steels with the gas-shielded process comprises flux ingredients in the following amounts, by weight %:rutile concentrate: 20-53ferromanganese: 10-22.8ferrosilicon: 1.3-6sodium fluosilicate: 1-5calcined magnesite: 1.3-10electrocorundum: 1.6-7.5iron powder: balance.

Abstract: A continuous cored electrode includes a sheath which encloses a core formed of a granular material of the following composition, in percent by weight:______________________________________ feldspar from 1.8 to 10.4 sodium fluosilicate from 1.6 to 10.0 ferromanganese from 13.0 to 20.0 ferrosilicon from 0.6 to 1.6 reduced titanium concentrate from 58 to 83. ______________________________________The proposed cored electrode is well suited for use in the CO.sub.2 welding of low-carbon and low-alloy steels.

Abstract: A flux-cored electrode intended for arc welding of steels in carbon dioxide s characterized in having a casing of a low-carbon steel filled with a powder flux containing (in weight percent):calcined magnesite: 4-8,feldspar: 6-9,calcium fluoride: 4-5.5,titanium dioxide: 14-20,ferromanganese: 6-10,ferrosilicon: 1.5-3,iron powder: the rest.The flux-cored electrode is practicable if used in semi-automatic and automatic welding of metal structures from structural low-carbon and low-alloy steels and from steels of improved strength. The flux-cored electrode with the above chemical composition of the flux is conducive to reduced separation of fluoride gases harmful to welders, the high welding characteristics of the electrode remaining intact.