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Wear behaviors of hardmetal YG8B were examined in detail through a modified wet sand rubber rimmed wheel test system ASTM B611 using drilling fluids (slurries) with three types of coarse angular sands, SiC, Al 2 O 3 and SiO 2 , respectively, and an extremely long sliding distance up to more than 60km was adopted. Under the same condition, the volume loss of hardmetals was positively...
A population growth model (PGM) is introduced to simulate wear during running-in, which is one of three typical wear states. The rough contact region is divided into several bar-shaped elements while the wear of every grid point has been considered as a PGM process. The wear volume in rough surface can be calculated during the wear processes and the proposed wear formula contains three items: initial...
Erosion caused by solid particles entrained in pipelines can lead to serious economic loss and potential safety hazards in the oil and gas industry. Long straight pipe is the most common form of pipeline. In the present work, a probability model for particle erosion in a long straight pipe is proposed to predict the overall penetration rate caused by solid particles by analyzing the random movement...
Dry sliding tests were performed on as-cast AZ31 magnesium alloy using a pin-on-disc configuration. Coefficients of friction and wear rates were measured within a load range of 5–360N and a sliding velocity range of 0.1–4.0m/s. Morphologies, compositions and hardness of worn surfaces were characterized by scanning electron microscope (SEM), energy dispersive X-ray spectrometer (EDS) and hardness tester...
The damage caused by sand erosion is an inevitable problem encountered in the oil and gas transportation system. The elbow is one of most vulnerable fittings of pipelines. For gas flow in elbows, it has been proved that incident solid particles will rebound randomly when they initially impact the wall, and then impact the wall once again with a certain probability, resulting in second collision erosion...
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