wanhaorefractory

Although the melting point of aluminium and aluminium alloys is not high, their chemical activity is very high and they are easy to react with different components in furnace lining. The fluidity of aluminium melt is good and it is easy to penetrate into lining. The lining thickness of medium frequency aluminium melting furnace is only 80-100 mm, the temperature difference between inside and outside is large, and the alternation of heat and cold is frequent. Therefore, the refractories used in furnace lining are required to have high chemical stability, high strength, corrosion resistance and erosion resistance, as well as volume stability, rapid cooling and heat resistance, and not easy to stick slag, which is easy to remove after sticking slag. Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory products for electric furnace, ladle, tundish, blast furnace, AOD furnace, IF furnace, etc. Article Source: Casting Mo...

With the degree of oxidizability, basic slag performs different color, thus slag color is the sign of the deoxidation degree of slag and molten steel. When the oxidizability is high, slag is black, with the oxidizability of slag goes weaker, which means deoxidization of slag , the color of slag becomes lighter as black→grey→brown→yellow→light yellow→white(FeO+MnO normally less than 1%). Black: FeO+MnO>2%. Means bad deoxidation, further deoxidation from slag is required, aluminium grains, accelerator, slag regulator, multifunctional desulfurizer and compound desulfurizer can be used to do it. Grey to brown: FeO+MnO=1~2%. A certain degree of deoxidization is required. Yellow to white: With good deoxidization . Yellow means there is desulphurization, this kind of slag will break into powder after cooling. Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory products for electric furnace, ladle, tundish, ...

During continuous casting, the casting powder is mostly used (together with submerge nozzle) except from casting billets with small section. Practice has proved that this process is one of the important conditions to ensure the quality and normal operation of casting billet. In the early 1970s, the process was successfully applied to slab continuous casting in our country and solved the problem of slab longitudinal crack, and then was gradually popularized and applied. In recent years, a series of protective slag has been established, Some special fluxes for continuous casting of special steel are developed, which provide necessary conditions for further development of continuous casting in China. There have many kinds of refractory products in our factory. Function of mold fluxes : 1 Insulation 2 Isolating air and preventing molten steel from oxidizing two times 3 Purify the slag interface and absorb the inclusions in molten steel 4 Lubrication shell an...