Research on Cutting Quality Influencing Factors of Underwater Arc Saw Cutting
A large number of structural components need to be disassembled underwater in the fields of ocean,ship,oil and so on.The existing underwater cutting methods have some limitations,such as low material removal rate(MRR),complex structure of cutting device,large tool wear rate(TWR).It is urgent to explore new cutting methods.Blasting erosion arc machining(BEAM)has the advantages of high MRR and TWR,and has achieved good results in the processing of difficult cutting materials.Based on the principle of BEAM,designsed an underwater arc saw cutting experimental device,and simulated the inter electrode flow of the device under different spindle speeds.Based on the simulation results,a series of experiments were designed to study the influence of current form,current size and spindle speed on cutting quality.The experimental results show that the BEAM cutting can realize the efficient underwater cutting.In addition,when using pulse power supply,the cutting quality is better than that of DC,and increasing the current will improve the cutting width at the outlet.Too low spindle speed will affect the debris discharge effect between the electrodes,so higher rotation speed should be used in processing.
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