Study on Tooth Surface Wear and Pitting Corrosion of Carbon Steel Gears Under Different Lubrication Conditions

doi:10.12068/j.issn.1005-3026.2023.07.008

Abstract

Abstract: The electrochemical corrosion will form Fe-free inclusions on the tooth surface， and the crevice corrosion between the inclusions and the surface of the Fe matrix may become the initiation position of pitting corrosion. Due to the periodic pressure of the lubricating oil， the crevices will continue to expand and form pitting corrosion. Under the condition of dry friction， the incidence of pitting corrosion is the lowest and the wear is the most serious. High temperature oxidation corrosion occurs on the tooth surface and an oxide layer is formed on the tooth surface. Under the condition of oil lubrication， the lubricating oil is adhered to the tooth surface in the form of oil film， the incidence and area of pitting corrosion increase with the improvement of lubrication conditions， and the wear degree decreases with the improvement of lubrication conditions. Under the condition of dry friction， tooth surface wear is the main failure mode， and under the sufficient lubrication condition， tooth surface pitting becomes the main failure mode. When the lubricating oil supply decreases， the minimum wear depth will shift from the node position to the tooth root direction.

Key words: different lubrication condition; tooth surface pitting; tooth surface wear; carbon steel gear; FZG gear test

CLC Number:

TB114.3

ZHANG Sheng-nan， SUN Zhi-li， GUO Fan-yi， WANG Jian. Study on Tooth Surface Wear and Pitting Corrosion of Carbon Steel Gears Under Different Lubrication Conditions[J]. Journal of Northeastern University(Natural Science), 2023, 44(7): 972-981.

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