What is Weathering Steel? Weathering steel is a kind of low alloy steel between common steel and stainless steel, a small amount of Cu, P, Cr, Ni and other elements is added into carbon steel, that forms a protective layer on the surface of the metal matrix, thus its atmospheric…
Rolling steel heating furnace is one of the main energy-consuming equipment in the rolling line, and through the comprehensive use of energy-saving technologies can improve energy utilization and reduce production costs. Step heating furnace can consider the following energy-saving methods. Air storage combustion technology The use of air storage combustion…
Integrity of technical information. Requirements for equipment drawings are complete, complete, applicable, can guide the operation of equipment, inspection and maintenance, spare parts preparation, etc. Convenient, reliable and safe operation of the equipment. The instrumentation, lubrication, transmission parts, sliding parts, safety devices and other important parts of the equipment are…
After several years running, steel mills have to reform production process and equipment in order to gain high competitive power and own advantage. One the hand some tricky problems can be solved through revamping works, more importantly, the production capacity can be enhanced and the product mix is more reasonable.…
Carbonization method of steel slag is based on the latest scientific research technology of Columbia University, steel slag can be treated and the final formation of high-purity calcium carbonate, iron-containing materials and other products. High-purity calcium carbonate can be used in a number of industries such as paper and plastics, reducing the mining and…
One of the main defects on the surface of ultra-low carbon steel hot rolled coil is slag inclusion, the shape of the defect is generally black or black and white strip, and there is obvious color difference, intermittent distribution along the rolling direction, the length of the slag inclusion varies.…
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…
