Energy saving curing and precision manufacturing technology of tires

Conventional shaping mehod of tire curing depends on bladder with high elasticity and low rigidity to determine tire cavity profile, it is inevitably difficult to aquire high uniform mass distribution,which leads to low product manufacturing precision and low dynamic balance of tire.Meanwhile conventional tire curing process has defects of low heat transfer efficiency and geat useless consumption which adopts steam or water to heat green tire,especially tire cavity indirectly obtains themal energy from bladder with very low thermal conductivity.A new generation of tire energy saving curing and precision manufacturing technology is expected.Authors of this paper developed a kind of curing technology of direct pressure shaping with inner mould for tire and complete plants that an controlled telescopic metal mould with high rigidity and high heat conductivity replaces bladder and electromagnetic induction heating is applid to curing process which thoroughly abandons conventional heating mediums,further more intelligent and digital control of curing procedure is realized,which provide a new approach for curing saving and precision manufacturing of high-performance tire.Product trial-manufacture is carrid out on 255/30R22 tire and experimental results show that uniformity and dynamic balance of tire respectively increases 33% and 51%,utility cost saves 64% in curing process.