Research On The Influence Of Deflagration Shock Wave On The Thermal Energy Deburring

In the process of mechanical processing, different burrs are produced on the surface ofthe workpiece. Burrs are small, but they have bad effects on the using of the workpiece，sometimes even can lead to safety accidents. Therefore, removing burr safety and effectivelyhas become a key in the process of the workpiece machining. The thermal energy deburringcan effectively and fast remove workpieces burr of different materials, which has the highapplication value in the deburring field. Although the level of the thermal energy deburringmore and more mature, the system research lack of effective, scientific basis, which is aboutthe thermal energy deburring mechanism and the effect from burr deflagration shock wave onburr after the explosion of the mixed combustible gas burning.In this paper , gas mixture of hydrogen and oxygen as gas mixture in the thermal energydeburring though AutoReaGas software and AutoDyn software, and the mathematical modelof concrete blast cylinder and mathematical model of mesh are established with differenttypes of workpiece and burr on different initial conditions. The turbulent combustion model isbased on the method of simulation calculation, and the different parameters under mixed burnthe hydrogen from an explosion result analysis. This paper summarizes the differentparameters on the application of thermal energy deburring. The conclusions are as follows:(1) The small range of change ,about the size of workpiece，has minor effect on the shockdeflagration of mixed combustible gas. The bigger ratio of workpiece surface and the size, themore heat is absorbed in the unit of time. The study found that, When the ratio of the surfaceof workpiece and volume more than 20, the thermal deburring may undermine the workpiecemicrostructure.(2) In the using process of thermal energy deburring, the change of mixed combustible gas mixture can influence the pressure, temperature, chemical reaction rate of shock wave.The study found that, when burr thicker than the thin wall 0.1 times or more, the thermalenergy deburring may undermine the workpiece microstructure.(3) In the process of thermal energy deburring, the change of mixed combustible gasmixture influence the super pressure, temperature, chemical reaction rate and shock wavewave speed after the burning explosion. When the mixed combustible gas gets mixedequivalent, the parameters of the shock deflagration are maximum. At the same time, the ratioof combustible gas of the applicable scope of different materials workpiece;(4) In the process of heat energy deburring, the change of initial pressure from the mixedcombustible gas influence chemical reaction rate and overpressure from wave of the burningexplosion. Furthermore, it is approximate liner relationship between the explosionoverpressure and the initial pressure. Otherwise, the temperature and velocity would notchange with the increase of initial pressure from the pre-mixed combustible. At the same time,the initial pressure range is given from different materials；(5) The loading density directly influences the super-pressure of pre-mixed gas burningafter the explosion overpressure, chemical reaction rate, temperature and the speeddeflagration of shock. The bigger of the loading density, the smaller the explosion combustionpressure, chemical reaction rate, temperature of deflagration of shock wave speed become.The research results of the paper could offer some theories for engineering applicationand work safety of the future.