Heat treatment of centrifugally cast high carbon high vanadium high speed steel mill roll

Fu, H.; Zhao, H-J; DU, Z.; Zhi-yan, Feng; Lei, Yuebao; Zhang, Y; Li, M-W; Jiang, Yong; Zhou, Rongfeng; Guo, H-X

doi:10.1179/1743281211y.0000000003

Cited by 14 publications

(6 citation statements)

References 20 publications

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“…Recently, high-speed steel rolls have been used for hot mill work rolls by increasing their carbon and vanadium contents, and were found suitable as replacement for high chromium white cast iron and high Ni-Cr infinite chill iron rolls [1,2]. However, high-speed steel rolls contain many cost alloy elements, such as tungsten, molybdenum, vanadium, niobium, cobalt, etc., which incurs higher production cost and restricts the application of high-speed steel rolls [3].…”

Section: Introductionmentioning

confidence: 99%

Effect of Quenching Process on Microstructure and performance of High-Boron High-Speed Steel

Yang

Cheng

et al. 2019

Matéria (Rio J.)

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The effects of quenching process on microstructure and hardness of High-Boron High-Speed Steel (HB-HSS) containing 0.4%C-6.0%Cr-4.0%Mo-1.0%V-1.0%Si-0.5Mn-x%B-y%Al (x=1.0, 1.5, 2.0, y=1.0, 2.0, 3.0) were investigated by means of optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and Rockwell hardness tester. The experimental results indicate that the quenching microstructure of HB-HSS consists of α-Fe, M 2 (B, C), M 7 (B, C) 3 and a few of M 23 (C, B) 6 。With the increase of quenching temperature, the net structure of borocarbides is damaged and the borocarbides are evenly distributed in the matrix. When the quenching temperature is 1050 °C, the Rockwell hardness of HB-HSS increases with the increase of boron content. The Rockwell hardness of HB-HSS decreases with the increase of aluminum content. When the quenching temperature is 1050 °C, the aluminum content is 1.0% and boron content is 1.0%-2.0%, the combination of the microstructure and the hardness of HB-HSS is the best.

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Section: Introductionmentioning

confidence: 99%

Effect of Quenching Process on Microstructure and performance of High-Boron High-Speed Steel

Yang

Cheng

et al. 2019

Matéria (Rio J.)

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“…It's reasonable to search for an optimal cooling rate for the austenitising of high-speed steel. Furthermore, changing in cooling rate could influence the category, dimension and morphology of the carbides [14,15], which consequently has an influence on the microstructure and mechanical properties of the steel. The correlation between these factors also needs to be sufficiently well elucidated.…”

Section: Introductionmentioning

confidence: 99%

Effect of cooling rate on the transformation characteristics and precipitation behaviour of carbides in AISI M42 high-speed steel

Luo

Guo

2018

Ironmaking & Steelmaking

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The influence of cooling rate during austenitising process on the transformation characteristics and precipitation behaviour of carbides in AISI M42 high-speed steel was investigated through thermodynamic calculation, dilatometry, microstructural analysis, and steel inclusion analysis system. Results show that under low cooling rate (<1 K s −1 ), the carbides in the steel are coarse, growing along the grain boundaries, and forming a network distribution. Under high cooling rate (≥1 K s −1 ), the morphology of carbides turns into block shape, and martensitic microstructure has been achieved. The volume fraction of the carbides decreases with the increase of cooling rate, meanwhile, the size distribution of the carbides is meliorated. However, when the cooling rate further increases from 5 to 20 K s −1 , the precipitated carbides becomes non-uniform with the increasing cooling rate. Consequently, an appropriate cooling rate of heat treatment can be selected to optimise the distribution of carbides.

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“…However, the quenching temperature and the subsequent tempering process have not been studied yet. The quenching temperature has a significant influence on the structure and properties of high speed steel (HSS) rolls . Therefore, the effect of quenching temperature on residual stress should be discussed.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Thermal Breakage in Bimetallic Work Roll Considering Heat Treated Residual Stress Combined with Thermal Stress during Hot Rolling

Xia

Fang

et al. 2017

steel research int.

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Bimetallic rolls are widely used in steel rolling industry because of their excellent hardness, wear resistance, and high temperature properties. Heat treated residual stresses consist of compressive stress in the shell and tensile stress in the core are produced in the bimetallic roll during heat treatment. In the subsequent hot rolling process, severe thermal stresses are caused by heating-cooling thermal cycles at the roll surface. The combination of heat treated residual stresses and thermal stresses will cause a complex stress field in work roll during hot rolling process. The high combined tensile stress at the roll center may cause thermal breakage, once the tensile stress exceeds the material strength. Consequently, it is necessary to investigate the combined stresses to improve roll service life during hot rolling process. In this paper, the combined stresses in the work roll during hot rolling are investigated based on the FEM simulation, considering the heat treated residual stress after tempering process and thermal stress generated during hot rolling. In addition, the thermal breakage of work roll is evaluated in breakdown of water cooling systems and rolling incidents.

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Heat treatment of centrifugally cast high carbon high vanadium high speed steel mill roll

Cited by 14 publications

References 20 publications

Effect of Quenching Process on Microstructure and performance of High-Boron High-Speed Steel

Effect of Quenching Process on Microstructure and performance of High-Boron High-Speed Steel

Effect of cooling rate on the transformation characteristics and precipitation behaviour of carbides in AISI M42 high-speed steel

Evaluation of Thermal Breakage in Bimetallic Work Roll Considering Heat Treated Residual Stress Combined with Thermal Stress during Hot Rolling

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