PURPOSE: To vulcanize a material to be vulcanized, such as a tire, into an optimum state without the variation of the vulcanized state of the material, such as a tire, in the vulcanized state.
CONSTITUTION: Based on initial set conditions including a boundary condition of a tire 48 to be treated, a vulcanization and a time series temperature measurement are conducted (steps 102-112). In the initial set conditions, a thermal conductivity, a heat transfer coefficient, a heat flow rate, and the like as a function of a temperature are taken into consideration. An internal temperature of the tire is estimated using the measured temperature values by an FEN analysis by an analyzing model composed of the tire, a mold, and a bladder, and a latest point is determined by the estimated temperature (steps 114, 116). Next, a vulcanizing degree and a vulcanizing reactivity at the latest point are evaluated (a step 117). A vulcanizing time to a predetermined vulcanizing reactivity value is predicted (a step 118). A vulcanizing machine is feedback controlled till the elapse of the predicted vulcanizing time (steps 120-124).
IWATA TOSHIRO
HIRUKAWA TETSUYA
| JPH01113211A | 1989-05-01 |