For electric furnace smelting, the consumption of the electrode depends on its quality, also it is relevant with process operation (current density, steel grade, scrap quality and lumpiness, blowing oxygen last time ). Consumption of the electrode extremity: The consumption includes the sublimation of graphite material caused by the high…
In other to acquire sheet performances, cold rolling thin sheet process uses the rolls after roughening treatment, through the laser or other methods make the surface of the roll uneven and rough with lots of tiny bump and tiny dent. The contact state between the roll and the sheet is…
Direct reduction of iron is the reduction of iron oxide in the solid state at a temperature below the melting point. Due to the oxygen discharge and reduction expansion, the reduction product is porous, the porosity can reach 50% ~ 70%, its internal specific surface area is more large, due…
Mould protection slag has the following five major functions to benefit the billet production. 1. Reduce the heat loss of the molten steel Continuous casting protection slag must have good adiabatic thermal insulation properties, so that the continuous casting process can inhibit the formation of bridges and crusts in the mould, while increasing the…
Question: The causes of furnace lining damage? Answer: Impact from scrap and molten iron to the furnace lining and mechanical wear. Molten steel and slag stirring as well as gas scouring. Chemical erosion of the furnace lining by slag. Furnace lining temperature’s excitation cooling or heat change and structure change.…
The secondary cooling section of continuous casting process may influence the output of the casting machine and the quality of the cast billet. The high quality and high yield of continuous casting depends to a large extent on the intensity of the secondary cooling, cooling process, cooling water distribution and control.…
The magnet yoke is a yoke steel made of silicon steel sheet, which is evenly and symmetrically placed around the induction coil. Its function is to restrain the magnetic leakage of the induction coil from spreading outward, to improve the efficiency of induction heating, and to act as a magnetic shield to reduce the heat…
Calcium oxide also called burnt lime acts positive actions at steel-making process. Removal of hazardous elements S, P, Si, As Since oxides of sulfur, phosphorus, silicon and arsenic are usually some acidic substances, they are chemically combined with some alkaline substances to form relatively stable compounds. The lump calcium oxide…
The wire rods are main materials of various drawing steel products. Due to the special use of the material, the purity of the steel shall meet the standard. otherwise there is a possibility of fracture during the drawing process. For example, the production process of ? 5.5 wire rod of…
Austenitic stainless steel (201, 202, 301, 304, 316) is non-magnetic or weakly magnetic, martensitic or ferritic stainless steel (430, 420, 410) is magnetic. Most of the stainless steel usually used as decorative pipe plate is austenitic, generally speaking, is non-magnetic or weakly magnetic, due to smelting composition bias or improper…
