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Forging welding bonding technology is a manufacturing method for workpieces made by welding forged cylinder sections together. The forging and welding combination technology of the cylinder body is to divide the cylinder body into two parts: the cylinder tube and the cylinder bottom, which are made of forged steel parts. After rough machining, they are welded together for precision machining. The final cylinder body has a good organizational structure and mechanical properties, and can reduce manufacturing costs.

Prior to roll quenching and tempering, appropriate heat treatment processes can improve the grass-like echo defects of roll blanks. Aiming at the grass-like echo defects detected by ultrasonic testing in 70Cr5Mo steel roll blanks, this paper adopts post-forging heat treatment processes such as normalizing and spheroidizing annealing to refine the microstructure morphology of 70Cr5Mo steel blanks, obtain favorable microstructural features, and reduce or eliminate grass-like echoes in the blanks, so as to ensure no adverse effects on inspection and service performance.

The manufacturing methods of support rollers mainly include forging and casting. The hot working process of forged steel support rollers mainly includes smelting, casting, forging, and heat treatment, so that the working layer of the produced support roller body can achieve high wear resistance, high and uniform hardness, and excellent accident resistance. At the same time, it ensures that the core and neck of the roller have high toughness and strength, to ensure the dimensional accuracy and good surface quality of cold-rolled strip or steel plate.

The heat treatment process of forged steel cold rolling rolls mainly includes post forging heat treatment, overall quenching and tempering treatment of the roll, deep quenching and tempering treatment of the roll body. Some cold rolling work rolls also require deep cryogenic treatment to increase the depth of the quenching layer and reduce the residual austenite content. Among them, post forging heat treatment, as a heat treatment process for roll forging, includes forms such as normalizing and spheroidizing annealing, mainly used to improve the matrix structure, eliminate stress, and improve machining and cutting performance. The overall quenching and tempering treatment of the rolling mill includes quenching and high-temperature tempering. After quenching and tempering treatment, the rolling mill substrate has good strength, toughness, plasticity, and mechanical processing properties.

This article introduces the key points of MC5D roll billet manufacturing technology. Through the reasonable application of forging process and high-temperature diffusion technology, the original segregation of roll billet is improved, liquid precipitation carbonization is eliminated, and the density of roll billet is increased to achieve high-quality roll billet quality requirements, while effectively reducing production costs..