Production process of modified alloy ball iron roller
A production process and technology of alloy balls, applied in the direction of manufacturing tools, quenching agents, heat treatment equipment, etc., can solve the problem of product quality, production safety and stability, insufficient production cost, hardness of the working layer of the roll body, unsatisfactory metallographic structure, and the core of the roll. Failure to meet the requirements and other problems, to achieve the effect of improving microhardness, metallographic structure, and working layer hardness
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[0015] The present invention is especially suitable for producing diameters in range between rolls.
[0016] First prepare the raw materials, and melt the raw materials in the intermediate frequency furnace. At this time, the chemical composition (weight%) of the molten iron is: C3.00~3.40%, Si1.60~2.20%, Mn0.40~0.80%, P≤0.08 %, S≤0.03%, Cr0.20~0.50%, Ni2.00~3.50%, Mo0.50~0.80%, Nb0.30~1.00%, V0.30~1.00%, Mg≥0.04, the rest is Fe, The metallographic structure is alloy pearlite ductile iron. After the chemical composition and temperature of molten iron smelting reach the range required by the process control, deoxidize the molten iron and then carry out nodularization treatment and compound inoculation treatment on the molten iron. The proportion of nickel-magnesium alloy + copper-magnesium alloy + magnesium-silicon rare earth composite nodulizer, the total addition: 1.0-2.0%; use pure cerium rare earth + silicon-calcium alloy + silicon-zirconium alloy + 75 ferrosilicon + str...
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