The invention relates to a method for destroying a waste automobile
airbag gas generator. The method adopts a water knife
cutting process, namely by using high-pressure
water jet flow to carry out cold-state
cutting so as to destroy the
airbag gas generator, and involves a water knife
cutting machine, wherein the water knife cutting
machine is mainly composed of a high-pressure pump, a
numerical control machining platform, an injection cutting head, a sand supply
system and a cooling
system; and meanwhile, a waste water pretreatment
system is also provided. The
airbag gas generator is divided into two halves after being
cut by a water knife, wherein
sodium azide (NaN3 ) and
potassium nitrate (KNO3) and the like of the airbag gas generator are completely dissolved in water, and an igniter is completely destroyed to lose the
detonation function, so that only a
metal shell capable of being recycled of the whole gas generator remains, and the
metal shell is separately treated after being collected. Compared with the prior art, the method for destroying a waste airbag gas generator has the advantages of being safe and reliable in process, clean and environment-friendly, small in occupied area, low in operation cost, high in treatment efficiency and capable of running for 24 hours continuously; and meanwhile, the recycling application of the gas generator outer shell
after treatment is wide.