D. Weires, S. Holder, The Boeing Company, Philadelphia, PA
Oil quenching is the industry standard for heat treating of 9310 gear steel. Many gears and splined shafts have intricate shapes and section size changes that contribute to distortion during oil quenching. However, oil quenching achieves the necessary metallurgical and mechanical properties. High pressure gas quenching of 9310 steel is being studied to determine if equivalent metallurgical properties and bending fatigue performance can be achieved when using high pressure gas quenching. This study compared the rotating beam bending fatigue performance of oil quenched 9310 steel versus10-BAR Nitrogen high pressure gas quenched 9310 steel.
Summary: Oil quenching is the industry standard for heat treating of 9310 gear steel. Many gears and splined shafts have intricate shapes and section size changes that contribute to distortion during oil quenching. However, oil quenching achieves the necessary metallurgical and mechanical properties. High pressure gas quenching of 9310 is being studied to determine if equivalent metallurgical properties and bending fatigue performance can be achieved when using high pressure gas quenching. This study compared the rotating beam bending fatigue performance of oil quenched 9310 steel versus 10-BAR Nitrogen high pressure gas quenched 9310 steel.
