SiC for manufacturing ductile iron casting

 The SiC for manufacturing ductile iron casting market from the user behavior point of view, the application trend in the ductile iron is becoming increasingly clear, in addition, the user in the purchase of silicon carbide is the most concerned about the quality and increase the number of graphite balls, improve, properly improve the mechanical properties.

 

The content of SiC for manufacturing ductile iron casting in 90%, the amount of 2.5%, the batching situation is as follows: the total weight of batching 1600 kg, 800 kg cupola pouring furnace ingot (before the power frequency furnace began to send power, easy to improve the power of the circular large iron), 800 kg scrap steel, 40 kg silicon carbide, batch to join, finally add carburant.The composition of the furnace ingot is 2.15% carbon, 0.08% silicon, 0.65% manganese, 0.06% phosphorus and 0.06% sulfur.The final melting composition of electric furnace, because it is an experiment, the carbon content is divided into several grades, from 3.30-3.65%, silicon in 2.20-2.30%, the general conclusion is that after adding silicon carbide, the graphite shape becomes coarser and shorter, the spacing is larger, increase the number of eutectic groups, improve the relative strength and relative hardness of cast iron, reduce the degree of supercooling of molten iron after incubation,"It is beneficial to improve the quality of induction furnace cast iron by using silicon carbide instead of ferrosilicon".

 

With the rise of the use range of SiC for manufacturing ductile iron casting, the structure of the use of silicon carbide products also presents the first product after service stage characteristics.The use of silicon carbide users for silicon carbide products of the most core value of the basic demand will gradually rise to improve the metallurgical quality of molten iron, pretreatment agent containing barium ferrosilicon alloy, silicon carbide, and so on some of the advanced demand, and even derived to the demand for high-tech products.