High-speed steel composite roller and production method thereof
A composite roll and production method technology, which is applied in the field of roll manufacturing for steel rolling, can solve the problems of poor toughness, peeling, high cost, etc., and achieve the effects of ensuring strength and wear resistance, prolonging service life, and reducing manufacturing costs
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Embodiment 1
[0047] (1) Layered casting of roller sleeves:
[0048] The chemical composition of the outer high-speed steel material of the roller sleeve is: C 0.92%, Si 1.05%, Mn 0.68%, Cr 6.51% Mo5.11%, W 2.42%, V 3.98%, Ni 0.66%, Mg 0.022%, P 0.031 %, S 0.028%, the balance is Fe;
[0049] The chemical composition of the ordinary carbon steel material in the inner layer of the roller sleeve is: C 0.36%, Si 0.17%, Mn 0.63%, Cr 0.17%, P0.034%, S 0.032%, and the balance is Fe.
[0050] First, the outer layer and inner layer materials of the roller sleeve are smelted separately according to the specific composition requirements. In order to ensure the absorption of the modifier Mg in the molten steel, the Mg is processed into small pieces and pressed with SiFe powder to form a Fe-Si-Mg briquette. Add iron-silicon-magnesium briquettes with 0.25% molten steel containing 20% metal Mg to the high-speed molten steel to modify the molten steel; after the outer layer of molten steel is tapped and...
Embodiment 2
[0056] (1) Layered casting of roller sleeves:
[0057] The chemical composition of the outer high-speed steel material of the roller sleeve is: C 1.44%, Si 1.35%, Mn 0.72%, Cr 4.00% Mo3.78%, W 1.00%, V 5.05%, Ni 0.79%, Mg 0.013%, P 0.029 %, S 0.025%, the balance is Fe;
[0058] The chemical composition of the ordinary carbon steel material in the inner layer of the roller sleeve is: C 0.80%, Si 0.28%, Mn 0.80%, Cr 0.15%, P0.032%, S 0.032%, and the balance is Fe
[0059] First, the outer layer and inner layer materials of the roller sleeve are smelted separately according to the specific composition requirements. In order to ensure the absorption of the modifier Mg in the molten steel, the Mg is processed into small pieces and pressed with SiFe powder to form a Fe-Si-Mg briquette. Add iron-silicon-magnesium briquettes with 0.15% molten steel containing 20% metal Mg to the high-speed molten steel to modify the molten steel; the outer layer of molten steel is tapped out and po...
Embodiment 3
[0065] (1) Layered casting of roller sleeves:
[0066] The chemical composition of the outer high-speed steel material of the roller sleeve is: C 0.80%, Si 1.60%, Mn 0.50%, Cr 7.00% Mo3.00%, W 5.00%, V 3.00%, Ni 1.50%, Mg 0.010%, P 0.030 %, S 0.025%, the balance is Fe;
[0067] The chemical composition of the common carbon steel material in the inner layer of the roll sleeve is: C 0.45%, Si 0.36%, Mn 0.71%, Cr 0.09%, P 0.030%, S 0.034%, and the balance is Fe.
[0068] First, the outer layer and inner layer materials of the roller sleeve are smelted separately according to the specific composition requirements. In order to ensure the absorption of the modifier Mg in the molten steel, the Mg is processed into small pieces and pressed with SiFe powder to form a Fe-Si-Mg briquette. Add iron-silicon-magnesium briquettes with 0.20% molten steel containing 20% metal Mg to the high-speed molten steel to modify the molten steel; the outer layer of molten steel is tapped out and pour...
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