Development of a new flux-cored wire based on the gas cleaning dust of the silicomanganese

Abstract

ABSTRACT The possibility of producing flux-cored wire by using gas-cleaning dust of the silicomanganese production and gas-cleaning dust of aluminium production with a different ratio of components is studied. As components are used: gas cleaning dust of aluminium production, wt. %: Al2O3 = 21–46,23; F = 18–27; Na2O = 8–15; K2O = 0.4–6; CaO = = 0.7–2.3; Si2O = 0.5–2.48; Fe2O3 = 2.1–3.27; Ctotal = 12,5–30,2; MnO = 0.07–0.9; MgO = 0.06–0.9; S = 0.09–0.19; P = 0.1–0.18 and the dust of gas cleaning silicomanganese, wt. %: Al2O3 = 2.43; Na2O = 1.32; K2O = 5.56; CaO = 6.4; SiO2 = 29.19; BaO = 0.137; MgO = 7.54; S = 0.23; P = 0.04; Fe = 1.067; Mn = 27.69; Zn = 2,687; Pb = 3.833. The deposition is performed under a flux made from a slag of silicomanganese produced by the West-Siberian Metallurgical Plant with the chemical composition: Al2O3 = = 6.91–9.62%, CaO = 22.85–31.70%, SiO2 = 46.46–48.16%, FeO = 0.27–0.81%, MgO = 6.48–7.92%, MnO = 8.01–8.43%, F = 0.28–0.76%, Na2O = 0.26–0.36%, K2O = 0.6–2%, S = 0.15–0.17%, P = 0.01%. The deposition mode is selected. The samples wear tests carried out on the machine 2070 SMT-1. The chemical composition of the deposited metal is determined by the X-ray fluorescence method on an XRF-1800 spectrometer and the atomic emission method on a DFS-71 spectrometer. The hardness of the deposited layers is measured through the use of the MET-DU hardness tester. Evaluation of non-metallic inclusions was carried out according to GOST 1778–70 through the use of the optical microscope OLYMPUSGX-51. The principal possibility of manufacturing flux-cored wires for wear-resistant deposition through the use of the gas cleaning dust of the production of silico-manganese and gas cleaning of aluminium production with a different ratio of components is shown. Qualitative indicators are studied, and the manganese absorption coefficients for various ratios of components are calculated. Statistical processing of research results is carried out; statistical dependencies of the component composition effect on the properties of the deposited layer are constructed.