Manufacturing process and equipment for nickel-chromium-molybdenum alloy cast iron composite roll in forged steel roll neck

Abstract

The invention discloses a nickel-chromium-molybdenum alloy cast iron composite roll process and equipment in a forged steel roll neck. The material mass percentages are: C: 3.3-3.8%, Si: 0.6-1.2%, Mn: 0.4-1.2%, Cr: 0.6 ~1.2%, Mo: 0.3~1.0%, Ni: 2.0~3.0%, Cu: 0.6~1.1%, P: ≤0.05%, S: ≤0.03%, Mg: 0.04~0.06%, Ba: 1.5~ 2.5%, Ca: 1-2%, RE1.0-2.0%, and the balance is Fe; Rare earth spheroidization and Ba, Ca, and ferrosilicon compound inoculation are used to improve the mechanical properties of the roll, and the forged steel roll neck is used to improve the roll quality. Intensity, using induction heater to heat and cast the mandrel as a whole in the mold, combined water-cooled crystallizer to form, the lifting device lifts the heater up at a certain speed to form a directional solidification in the area, and can dynamically control the interface of the composite layer, the process is simple and the efficiency is high , low power consumption, low cost, no component segregation in the composite layer, and long service life of the roll.

Description

technical field [0001] The invention belongs to the technical field of metal pressure processing, and in particular relates to a process and equipment for a nickel-chromium-molybdenum alloy cast iron composite roll in a forged steel roll neck, which is suitable for manufacturing composite rolls in the steel rolling industry. Background technique [0002] The roll is known as the "mother of steel". It is a tool for plastically deforming metal materials in the rolling production of steel, aluminum, copper and other metals. Rolling is an indispensable key component and the most important bulk consumption component, and its consumption cost is about 5% to 15% of the steel rolling production cost. If factors such as production downtime, reduced production and increased equipment maintenance due to roll consumption are considered, the proportion of production costs will be even higher. [0003] Rolling mill is an important equipment in metal pressure processing and production, an...

AI Technical Summary

Problems solved by technology

[0024] The purpose of the present invention is to address the deficiencies of the existing technology, and propose a nickel-chromium-molybdenum alloy cast iron composite roll process and equipment in forged steel roll necks with simple production process, low equipment investment, high production efficiency, low cost and good performance , to solve the shortcomings of centrifugal casting method, which is prone to component segregation, CPC method, ESR method, complex production process, large power consumption, high cost, and low efficiency. Forged steel is used as the roll neck to solve the problem of roll breakage

Images