High-speed casting-rolling roller sleeve with high heat transfer rate and high thermal fatigue resistance and machining method

Abstract

The invention belongs to the technical field of non-ferrous metal casting-rolling production equipment, and provides a high-speed casting-rolling roller sleeve with a high heat transfer rate and high thermal fatigue resistance and a machining method. The roller sleeve comprises, by weight percent, 0.28-0.36% of C, 0.4-0.6% of Si, 0.35-0.65% of Mn, 3.0-3.6% of Cr, 1.4-1.8% of Mo, 0.15-0.25% of V, 0.1-0.5% of Ni, 0.08-0.52% of Nb, less than or equal to 0.12% of S, less than or equal to 0.12% of P, less than or equal to 0.01% of B, and the balance Fe and inevitable impurities. The machining method comprises the steps of firstly performing proportioning according to the components and weight percentages of the roller sleeve to cast a steel ingot, then performing forging forming, rough machining, heat treatment and finish machining on the steel ingot to obtain the roller sleeve with a set wall thickness, and performing aging treatment and matching grinding to obtain a final product. The roller sleeve has high heat transfer efficiency and high thermal fatigue resistance.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal casting and rolling production equipment, and specifically relates to a high-speed casting roll sleeve with high heat transfer rate and high thermal fatigue resistance and a processing method, which is a key component suitable for the casting roll of an aluminum strip casting machine. Background technique [0002] The casting and rolling production process has become the common understanding of modern industrial production due to its advantages of short process, high efficiency and low energy consumption. However, the industrial production of high-speed continuous casting and rolling is not yet mature, and its technology needs to be further developed, especially in how to realize high-speed casting and rolling equipment. equipment. But for the casting and rolling production technology, one of the key core technologies is the casting and rolling crystalline roll, especially how to achiev...

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Problems solved by technology

[0006] In view of this, the purpose of the present invention is to provide a high-speed casting roll sleeve and processing method with high heat transfer rate and high thermal fatigue resistance, aiming to solve the problem of bursting caused by low cooling efficiency and low thermal fatigue resistance in the prior art , broken roll and other bad problems, so that the casting roll has excellent high-efficiency heat exchange capacity and high thermal fatigue resistance, thus providing a measure to meet high-quality production

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