Modification of steel 35HL surge current during crystallization

The method of electro steel melt modification 35HL variable polarity current pulses with a duration of more 10-3s frequency within the 5–33 Hz, 5–24 porosity meanders, strength 30–40 A at a voltage of 180–240V during crystallization, which allows to obtain high-quality castings 35HL steel grade.Show that electro melt processing improves the structure and reduces the physical heterogeneity of castings and increases the rate of dissolution of metallic impurities and other components in the melt, providing fine-grained structure and increases the homogeneity of metal carbides reduces the amount of manganese reduces gases and nonmetallic inclusions. Modifying steel 35HL pulse current during crystallization of the melt increases the physical and mechanical properties of tempered steel, increasing yield strength by 30%, the tensile strength at 7% elongation of 1,5% relative narrowing by 2%, toughness at 20%.