Implementation and Modification of the Manufacture of High-Quality Ingots in an ALD Vacuum Arc Furnace

Resumo

The results of producing metal products of the steel and alloy ingots manufactured on an ALD furnace are presented. Remelting with growth rate and drop pulse frequency control is tested. (08‒12)Kh18N10T steel is studied to determine the depth of shrinkage and subshrinkage defects in all ingots of all sizes (250, 320, and 500 mm in diameter). The quality of steels and alloys in chemical composition, mechanical properties, long-term strength, macrostructure, and nonmetallic inclusions are analyzed in terms of regulatory documents. The affordability of the implemented remelting process was about 4.4 mln rubles.