Control method of rubber tube vulcanization process

Abstract

The invention discloses a control method of a rubber tube vulcanization process. The control method comprises the following steps: before vulcanization, at least the temperature of the bottom in a vulcanization tank is confirmed, if the temperature reaches more than 60% of a target temperature, next step is performed, otherwise, preheating treatment is performed on a tank body and then the next step is performed; an exhaust valve of the vulcanization tank is opened, and the opening amplitude of the exhaust valve controls the steam exhaust amount to be smaller than the steam inlet amount in the follow-up boosting process; the vulcanization tank is subjected to steam pressure increasing, in the first stage, when the time progress of the total pressure increasing time is smaller than or equal to 20%, the pressure in the tank is increased to 60%-70% of the target pressure and kept, and in the second stage, when the time progress of the total pressure increasing time is larger than or equal to 80%, the pressure in the tank continues to be increased to the target pressure; and after pressure increasing is completed, if the temperature of each temperature measuring point reaches the target temperature, the exhaust valve is closed, pressure maintaining is conducted till vulcanization is finished, and pressure relief is conducted. According to the control method, the vulcanization temperature rise time consumption is shortened, the average vulcanization temperature is increased, the vulcanization energy consumption is reduced, the vulcanization process is more stable, the repeatability is better, and the occurrence of under-vulcanization can be prevented.

Description

Technical field [0001] The present invention belongs to the field of rubber vulcanization, and more particularly to a control method of a hose vulcanization process. Background technique [0002] At present, most of the production of rubber hydraulic hoses is vulcanized using a vulcanized tank injecting high pressure steam. Factors affecting the effect of vulcanization include: time, temperature, and pressure, and due to theoretical vapor pressure and temperature, existing vulcanization control processes generally control the vulcanization temperature by controlling the pressure in the vulcanization tank, so the vulcanization process regulation The main parameters are generally pressure and time. However, the vapor pressure in the vulcanized tank is substantially uniformly distributed, and the differential pressure between the parts is almost negligible. However, in the initial period of vulcanization, the tank and the material are in a warming state, and the condensed water form...

AI Technical Summary

Problems solved by technology

Therefore, controlling the temperature by pressure may easily cause the overall temperature of the vulcanization process to be low, resulting in insufficient sulfur, and there may be differences in the vulcanization depth of the product due to the large difference in vulcanization temperature between different batches, resulting in uneven product quality. uneven

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