Special roller for finish rolling of general wire rod mill
A technology for wire rod mills and rolls, which is applied in the direction of rolls, metal rolling, metal rolling, etc., can solve the problems of low tensile strength of roll necks, broken rolls, high cost, etc., to avoid uneven inoculation, reduce process, The effect of improving the surface quality of wire rods
Active Publication Date: 2012-10-03
湖州中杭轧辊有限公司
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AI Technical Summary
Problems solved by technology
Previously, the rolls of this material were cast as a whole, that is, the entire roll needs to contain alloy materials (Ni, Cr, Mo), so the cost is relatively high
In addition, the tensile strength of the roll neck is relatively low, which is easy to cause roll breakage
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0008] Embodiment 1: with reference to accompanying drawing 1. A special roll for finishing rolling in a common wire rod mill, which is a medium-nickel cold-cast centrifugal roll. 0.30%~0.80%, Cr content 1.00%~1.40%, Mo content 0.30%~0.40%, Ni content 2.40%~2.80%, P content0.03%, P content<0.10%, S content<0.30 %.
[0009] The medium-nickel cold-casting centrifugal roll adopts centrifugal casting, and is used for rolling ?6.5mm-?8.0mm wire rod rolling mill with a line speed of less than 25m / s and rolling round steel with a specification of ?10mm-?12mm.
Embodiment 2
[0010] Example 2: On the basis of Example 1, the outer layer composition of the medium-nickel chilled centrifugal roll is: C content 3.10%, Si content 0.30%, Mn content 0.30%, Cr content 1.00%, Mo content 0.30%, Ni content of 2.40%, P content 0.03%, P content < 0.10%, S content < 0.30%.
Embodiment 3
[0011] Embodiment 3: On the basis of embodiment 1, the outer layer composition of medium nickel cold cast centrifugal roll is: C content 3.50%, Si content 0.60%, Mn content 0.80%, Cr content 1.40%, Mo content 0.40%, Ni content of 2.80%, P content 0.03%, P content < 0.10%, S content < 0.30%.
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The invention relates to a special roller for finish rolling of a general wire rod mill, which can be suitable for a phi6.5mm-phi8.0mm wire rod mill with a rolling line speed less than 25m / s and a wire rod mill for rolling round bar steel with the rolling specification of phi10mm-phi12mm. The special roller is a middle nickel chilled casting centrifugal roller, wherein the nickel content in the components of an outer layer of the middle nickel chilled casting centrifugal roller is more than 2.4%. The special roller has the advantages that firstly, the process is simplified, that is, an outer-layer molten iron generating process can be reduced during the production due to the nickel chilled casting roller, so that the process is simplified, and the consequence that quality performances of parts of the roller are not uniform due to non-uniform generation can be avoided; secondly, the steel passing amount of the roller can be increased, the steel passing amount is an important standard for measuring whether the quality of the roller is good or bad for a steel mill. By adopting the chilled roller disclosed by the invention, the steel passing amount can be increased by 30%-40% compared with a middle nickel unlimited roller, and the surface quality of wires can be obviously improved; and thirdly, the middle nickel chilled casting centrifugal roller is subjected to centrifugal pressure casting and is also used for the phi6.5mm-phi8.0mm wire rod mill with the rolling line speed less than 25m / s and the wire rod mill for rolling the round bar steel with the rolling specification of phi10mm-phi12mm, both of which are initiative points of the invention.
Description
technical field [0001] The invention relates to a special roll for finishing rolling of ordinary wire rod mills which can be applied to ? The field of roll manufacturing. Background technique [0002] Compared with the previous stands, the finishing stand of the ordinary rolling mill has the smallest reduction. Generally, it is only necessary to solve the wear resistance of the rolls of this stand. Previously, rolls of this material were integrally cast, that is, the entire roll needed to contain alloy materials (Ni, Cr, Mo), so the cost was relatively high. In addition, the tensile strength of the roll neck is relatively low, which is easy to cause roll breakage. Contents of the invention [0003] Design purpose: to avoid the deficiencies in the background technology, to design a rolling mill suitable for rolling ? Special rolls for finishing rolling of ordinary wire rod mills. [0004] Design scheme: In order to achieve the above design purpose. 1. It is one of the ...
Claims
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Login to View More IPC IPC(8): C22C37/10B22D13/02B21B27/00
Inventor 李济玉
Owner 湖州中杭轧辊有限公司