FIELD: process engineering.
SUBSTANCE: invention relates to automatic welding of fixed circular butts in horizontal plane. Invention can be used for welding pipes of refractory material of the VNS-16-grade. Pipes are jointed. Made joint is fixed by squeezing along butt edges. Ply of activation flux AF-71 as the mix dissolved in ethanol is applied the surfaces of said edges. Tungsten electrode arc is fired and displaced along said edges. In preparation of the weld, 1 mm deep mark with the angle of edges opening making 45 degrees in made in the butt between pipes.
EFFECT: perfected process.
2 cl
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