Erosion Behavior and Surface Strengthening of Hydraulic Cylinders

The tee is inevitably eroded by drilling fluid during operation, resulting in a decrease in its lifespan. The surface strengthening of the three-way inner cavity can effectively improve its service life. However, the specific erosion behavior and surface strengthening effect evaluation of the tee still need to be studied. This article establishes a computational model for the erosion behavior of the tee and the surface strengthening of the inner cavity through finite element simulation. The calculation results indicate that the maximum erosion rate occurs at the intersection line between the inlet and outlet straight pipes of the three-way joint. With the change of the operating conditions of the drilling fluid flow inlet and outlet, the maximum erosion position still occurs at the intersection line between the inlet and outlet straight pipes. After surface strengthening, the maximum deformation displacement of the three-way inner cavity can be effectively reduced by 33.93%, improving the impact resistance and service life of the three-way inner cavity.