Effect of Heat Treatment on the Hardness and Wear of Grinding Balls

Aissat, Sahraoui; Sadeddine, Abdelhamid; Bradai, Mohand Amokrane; Younes, Rassim; Bilek, Ali; Benabbas, A.

doi:10.1007/s11041-017-0146-5

Cited by 9 publications

(3 citation statements)

References 22 publications

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“…Optimization measures of grinding ball process. According to the analysis of the microstructural characteristics of the grinding ball, it is found that the carbides are coarse, which will inevitably lead to cracks in the grinding ball under alternating shear stress and compressive stress, thus leading to the early failure of the grinding ball [10]. The coarseness of carbides is directly related to the high content of carbides, so the content of carbides can be reduced appropriately to refine carbides.…”

Section: Resultsmentioning

confidence: 99%

Analysis and Improvement of out of Round Grinding Ball

Xiong

Zhu

Lin³

et al. 2021

MSF

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In order to eliminate the out of round defect of grinding ball, an improvement measure is proposed. Firstly, the wear behavior and mechanism of the ball in different service conditions are obtained. Then, the root cause of grinding ball out of roundness is discussed. Finally, the corresponding improvement measures are put forward from the aspects of grinding ball material and heat treatment, so as to improve the microstructure and properties of grinding ball.

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Section: Resultsmentioning

confidence: 99%

Analysis and Improvement of out of Round Grinding Ball

Xiong

Zhu

Lin³

et al. 2021

MSF

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“…High chromium cast irons (HCWCI) are a type of wear-resistant material that are commonly used in the mining, cement, and power generation industries, where they are used in a variety of applications such as grinding balls, liners, and hammers. [1][2][3]. High-chromium white cast irons are ferrous alloys containing 11-30% Cr and 1.8-3.6% C along with other alloying elements such as molybdenum and nickel [4,5].…”

Section: Introductionmentioning

confidence: 99%

Improving Grinding Ball Lifespan and Efficiency Through Hardenability Modelling and Optimization

Aissat,

Safa

2023

Advances in Materials Science

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Grinding balls are spherical or cylindrical components used in grinding and milling operations to reduce the size of particles and achieve a finer product. They are made of high chromium white cast iron (HCWCI) and used in a variety of industrial processes. The efficiency of the grinding process is heavily influenced by the properties of the grinding balls, including their composition, size, and hardness. As such, there is ongoing research and development to improve the performance and durability of grinding balls, with the aim of countering the extreme conditions of wear and impact that cause a reduction in their lifespan. This study involved austenitizing balls with diameters of 50 mm and 70 mm at temperatures of 950°C and 1050°C, followed by quenching using both oil and compressed air. By exploiting the experimental HRC hardness results obtained in this work, the study aims to find a mathematical model relating the response (hardenability) to the main effects (austenitization temperature, quenching medium, and diameter balls) and their interactions. Analysis of variance (ANOVA) was used to establish the statistical significance parameters and an optimization of response by the best sub-models method and by the desirability function is realized in the second part of this work. It seems that the austenitization temperature and the size of the balls have a stronger impact on the hardenability of the balls than the cooling rate (quenching medium) by reducing the hardness difference between the surface and the medium of the ball to minimal values.

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“…However, the balls shall be subjected to appropriate heat treatments for improving their mechanical properties. Under these conditions, among the many parameters and criteria to be retained during these heat treatments are the austenitization temperature, the time and tempering [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Influence of Tempering on Microstructure and Wear Properties of High Alloy Chromium Cast Iron

Younes

Sad-eddine

Bradai

et al. 2021

Advances in Materials Science

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Mechanical properties, wear resistance and impact resistance of a high-alloy chromium cast iron used in the fabrication of grinding balls have been studied. A rank of tempering heat treatments under several temperatures 500°C, 525°C, 550°C and 575°C was performed after austenitized at 1050°C. The Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) techniques have been used to characterize the microstructures and identify the phases. The wear balls tests were conducted in a rotating drum with a velocity 0.5 r/s. The tribological tests were carried out by evaluated a weight loss as function time. The measurement of the rebound resilience was determined by Charpy impact tests. The results of XRD showed the presence of the martensite, carbides type M7C3 and M2C for all tempering heat treated. The hardness of the sample increased after the tempering and reach nearly 65 HRC at 1050°C. In another hand, it decreased after the tempering treatment it could be explained by precipitation of the carbides type M2C.

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Effect of Heat Treatment on the Hardness and Wear of Grinding Balls

Cited by 9 publications

References 22 publications

Analysis and Improvement of out of Round Grinding Ball

Analysis and Improvement of out of Round Grinding Ball

Improving Grinding Ball Lifespan and Efficiency Through Hardenability Modelling and Optimization

Investigation on the Influence of Tempering on Microstructure and Wear Properties of High Alloy Chromium Cast Iron

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