Centrifugal ceramic composite vertical mill roller sleeve and manufacturing method thereof
A vertical mill roller sleeve and ceramic composite technology, which is applied in the field of roller sleeve and its manufacturing, can solve the problems of failure to repair again, cracking of the roll sleeve, etc., and achieve the effect of good bonding state, avoiding falling off, high strength and toughness
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Example Embodiment
[0028] Example 1: The centrifugal ceramic composite vertical grinding roller sleeve is prepared by the following process.
[0029] (1) The process of melting the outer layer material: the weight percentage of the chemical composition of the outer layer of high chromium cast iron is: C2.6%, Si0.6%, Mn0.9%, Cr19%, Ni0.9%, Mo1.8%, P0 .02%, S0.01%, the balance is Fe and unavoidable impurities.
[0030] (2) The process of melting the inner layer material: the weight percentage of the chemical composition of the inner layer ductile iron material is: C3.7%, Si2.6%, Mn0.4%, P0.01%, S0.01%, and the balance is Fe and Inevitable impurities.
[0031] (3) Centrifugal casting process: the centrifuge rotates at 450 rpm, the mold cavity is fixed with ceramic particles; when the mold temperature is 200 ℃, the outer layer of molten steel is poured, and 80% of the outer layer of molten steel is poured into the mold, followed by the molten steel Evenly add the preheated mold powder; the outer layer of...
Example Embodiment
[0034] Embodiment 2: The centrifugal ceramic composite vertical grinding roller sleeve is prepared by the following process.
[0035] (1) The process of melting the outer layer material: The weight percentage of the chemical composition of the outer layer of high chromium cast iron is: C2.5%, Si0.7%, Mn0.8%, Cr20%, Ni1.1%, Mo1.9%, P0 .02%, S0.02%, the balance is Fe and inevitable impurities.
[0036] (2) The process of melting the inner layer material: the weight percentage of the chemical composition of the inner layer ductile iron material is: C3.8%, Si3.0%, Mn0.5%, P0.01%, S0.02%, and the balance is Fe and Inevitable impurities.
[0037] (3) Centrifugal casting process: the centrifuge speed is 500 rpm, and ceramic particles are fixed in the mold cavity; the outer layer of molten steel is poured when the mold temperature is 180 ℃, and 75% of the outer layer of molten steel is poured into the mold, followed by the subsequent molten steel Evenly add the preheated mold powder; the o...
Example Embodiment
[0040] Embodiment 3: The centrifugal ceramic composite vertical grinding roller sleeve is prepared by the following process.
[0041] (1) The process of melting the outer layer material: the weight percentage of the chemical composition of the outer layer of high chromium cast iron is: C2.8%, Si0.9%, Mn0.9%, Cr22%, Ni1.3%, Mo2.2%, P0 .01%, S0.03%, the balance is Fe and inevitable impurities.
[0042] (2) The process of melting the inner layer material: the weight percentage of the chemical composition of the inner layer ductile iron material is: C3.7%, Si2.8%, Mn0.5%, P0.02%, S≤0.01%, and the balance is Fe and Inevitable impurities.
[0043] (3) Centrifugal casting process: the centrifuge rotates at 420 rpm, and ceramic particles are fixed in the mold cavity; when the mold temperature is 150 ℃, the outer layer of molten steel is poured, and 78% of the outer layer of molten steel is poured into the mold, followed by the subsequent molten steel Evenly add the preheated mold powder; t...
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