Weld tungsten wire
Argon arc welding
Recommended welding with prior, concomitant and subsequent heating up to 300−650°C and welding without rigid mounting parts. Vacuum annealing t° 1800 °C for 1 hour increases the ductility of welded joints, the temperature of transition to the brittle state which is 700 °C. Developed a new powder tungsten GE-15, in arc welding which is not formed of pores and cracks .
Welding was performed with a continuous flow of inert gas to the burner. The flow of inert gas cools the weld, and the removal of hazardous from the welding area that provides clean impurities the introduction of sutures. When welding plates with thickness up to 1.5 mm in the burner serves a mixture of 50% AG + 50%, when welding thicker material — only helium.
Strength of welded joints is somewhat lower strength base metal to a temperature of 1650 °C. Sufficient to heat the welded part and the cooling in the vacuum as if created conditions of annealing after welding. Introduction to the molten metal additives of molybdenum and oxides of titanium and zirconium contributed to the grain refinement in the structure of joints. Developed a method of joining thin sheets of tungsten soldering method
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