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Abrasive slurry testing of different type of steels used in agricultural machinery

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Abstract
The aim of the current investigation is to identify a suitable material based on its wear performance for agricultural tines which currently uses alloyed martensitic steel 27MnB5. Low stress open three body abrasion is one of the wear mechanism in soil engaging tools. Slurry pot test was performed on candidate materials for experimentally simulating the ploughing action of the tine especially on the top surface which experiences abrasion from the flow of abrasive particles. The specimens were mounted on a rotating shaft which is eccentrically placed in a cylindrical container. The container was filled with an abrasive media Korund (Al2O3) with additional water forming the slurry. Samples extracted from the original tines were also included in these tests as reference material. Surface velocity (1-2 m/s) and ploughing depth (100 mm) was selected based on the real application. Change in specimen weight, dimensions, material hardness and surface morphology were studied. The surface of the contact area smoothened and experienced a polishing effect. The surface roughness reduced from Ra 0.3 to a Ra of 0.09 within 20 hours testing. Besides polishing hardening of the contact surface was evidenced where there is a relative increase in hardness of the worn zone compared to the unworn region. Beside the micro-cutting the impact angle of the particles influences the appearance of surface fatigue as pitting. The specimens set perpendicular to the flow of particles showed higher wear rate and experienced pitting as an additional mechanism. The pitting was present on the lower pressure region of the media. Among the tested materials martensitic steel (478 HBV, UTS 1523 MPa) performed best and was promoted for replacing the original material hence the high hardness of the martensitic microstructure leads to a better performance than the partly austenitic steel.

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MLA
Kalácska, Ádám, et al. “Abrasive Slurry Testing of Different Type of Steels Used in Agricultural Machinery.” Wear of Materials 2019, 22nd International Conference, Abstracts, 2019.
APA
Kalácska, Á., Sukumaran, J., Ben Hamouda, H., & De Baets, P. (2019). Abrasive slurry testing of different type of steels used in agricultural machinery. Wear of Materials 2019, 22nd International Conference, Abstracts. Presented at the Wear of Materials 2019, Miami, USA.
Chicago author-date
Kalácska, Ádám, Jacob Sukumaran, Haithem Ben Hamouda, and Patrick De Baets. 2019. “Abrasive Slurry Testing of Different Type of Steels Used in Agricultural Machinery.” In Wear of Materials 2019, 22nd International Conference, Abstracts.
Chicago author-date (all authors)
Kalácska, Ádám, Jacob Sukumaran, Haithem Ben Hamouda, and Patrick De Baets. 2019. “Abrasive Slurry Testing of Different Type of Steels Used in Agricultural Machinery.” In Wear of Materials 2019, 22nd International Conference, Abstracts.
Vancouver
1.
Kalácska Á, Sukumaran J, Ben Hamouda H, De Baets P. Abrasive slurry testing of different type of steels used in agricultural machinery. In: Wear of Materials 2019, 22nd International Conference, Abstracts. 2019.
IEEE
[1]
Á. Kalácska, J. Sukumaran, H. Ben Hamouda, and P. De Baets, “Abrasive slurry testing of different type of steels used in agricultural machinery,” in Wear of Materials 2019, 22nd International Conference, Abstracts, Miami, USA, 2019.
@inproceedings{8615318,
  abstract     = {{The aim of the current investigation is to identify a suitable material based on its wear performance for agricultural tines which currently uses alloyed martensitic steel 27MnB5. Low stress open three body abrasion is one of the wear mechanism in soil engaging tools. Slurry pot test was performed on candidate materials for experimentally simulating the ploughing action of the tine especially on the top surface which experiences abrasion from the flow of abrasive particles. The specimens were mounted on a rotating shaft which is eccentrically placed in a cylindrical container. The container was filled with an abrasive media Korund (Al2O3) with additional water forming the slurry. Samples extracted from the original tines were also included in these tests as reference material. Surface velocity (1-2 m/s) and ploughing depth (100 mm) was selected based on the real application. Change in specimen weight, dimensions, material hardness and surface morphology were studied. The surface of the contact area smoothened and experienced a polishing effect. The surface roughness reduced from Ra 0.3 to a Ra of 0.09 within 20 hours testing. Besides polishing hardening of the contact surface was evidenced where there is a relative increase in hardness of the worn zone compared to the unworn region. Beside the micro-cutting the impact angle of the particles influences the appearance of surface fatigue as pitting. The specimens set perpendicular to the flow of particles showed higher wear rate and experienced pitting as an additional mechanism. The pitting was present on the lower pressure region of the media. Among the tested materials martensitic steel (478 HBV, UTS 1523 MPa) performed best and was promoted for replacing the original material hence the high hardness of the martensitic microstructure leads to a better performance than the partly austenitic steel.}},
  author       = {{Kalácska, Ádám and Sukumaran, Jacob and Ben Hamouda, Haithem and De Baets, Patrick}},
  booktitle    = {{Wear of Materials 2019, 22nd International Conference, Abstracts}},
  language     = {{eng}},
  location     = {{Miami, USA}},
  title        = {{Abrasive slurry testing of different type of steels used in agricultural machinery}},
  year         = {{2019}},
}