V. Development of new powder wires for building-up. A powder wire based on dust of gas cleaning systems of silicomanganese

Abstract

A new powder wire developed by using dust of gas cleaning systems of silicomanganese production plant and powder of gas cleaning systems of aluminum production at different proportion of components. As components the following was used: dust of gas cleaning systems of aluminum production plant, % (mas.): 21–46.23 Al2O3; 18–27 F; 8–15 Na2O; 0.4–6 K2O; 0.7–2.3 CaO; 0.5–2.48 Si2O; 2.1–3.27 Fe2O3; 12.5–30.2 Ctotal; 0.07–0.9 MnO; 0.06–0.9 MgO; 0.09–0.19 S; 0.1–0.18 P, and dust of gas cleaning systems of silicomanganese production plant, % (mas.): 2.43 Al2O3; 1.32 Na2O; 5.56 K2O; 6.4 CaO; 29.19 SiO2; 0.137 BaO; 7.54 MgO; 0.23 S; 0.04 P; 1.067 Fe; 27.69 Mn; 2.687 Zn; 3.833 Pb.The building-up was done under a flux, made of slag of silicomanganese plant of Zapadno-Sibirsky steel-works, havin the chemical composition (%, mas.): 6.91–9.62 Al2O3; 22.85–31.70 CaO; 46.46–48.16 SiO2; 0.27–0.81 FeO; 6.48–7.92 MgO; 8.01–8.43 MnO; 0.28–0.76 F; 0.26–0.36 Na2O; 0.62 K2O; 0.15–0.17 S; 0.01 P. The building-up mode selected. Samples wear tests were carried out at machine 2070 СМТ-1. Chemical composition of the built-up metal was determined at spectrometer ДФС-71. The hardness of built-up layers was measured by hardness meter МЕТ-ДУ. The estimation of nonmetallic inclusions was made as per GOST 1778– 70 by optical microscope Olympus GX-51.Quality indices studied and coefficients of manganese recovery at different proportions of components calculated. Statistical processing of the study results was made, statistical curves of influence of component compositions on properties of built-up layer constructed.