Abstract：To reveal the spray atomization rule of the minimum quantity lubrication system, a three-dimensional particle dynamic analyzer based on laser Doppler effects was used to measure the atomization characteristics of oil droplets. For the three degradable green lubricating oils—trimethylolpropane trioleate, vegetable oil 6000 and polyethylene glycol 400, the atomization cone angle and distribution law of oil droplet size, speed and quantity under different oil volume, air flow and intercept conditions were tested. Experiments show that the spray cone angle was mainly determined by the nozzle structure, the number of oil droplets basically conformed to the normal distribution, and the air flow and oil quantity had a greater influence on the number of oil droplets, the oil drop velocity distribution had a bell-shaped curve and the jet center velocity was the highest. This atomization distribution characteristic had important engineering significance for the implementation of minimum quantity lubrication processing.
2022, 
