Saving energy, saving water, and increasing tire production and quality are the goals of the tire manufacturing industry. Guilin Rubber Machinery Factory combines the characteristics of tires at home and abroad, in particular with experts from well-known foreign tire companies, to develop a new process for tire vulcanization with equal pressure and temperature change. The process was used by users in Shanghai, Shandong, etc., and passed the acceptance test to prove that it has the advantages of energy saving, water saving, and improved tire production and quality.
At present, most tire manufacturing processes use traditional isotherm isothermal tire vulcanization technology. That is, a certain temperature and pressure medium (such as steam) is introduced into the bladder of the vulcanized tire, and for a certain period of time, the vulcanized tire is passed into the capsule. Over hot water. During the entire curing process, the hot water maintains a constant pressure and temperature to circulate without interruption, and isostatic pressure is maintained during the curing process. This process consumes a lot of energy and is the most energy-consuming process in tire production. In fact, the heat of the circulating superheated water is absorbed only by a small part of the tire, and a large amount of hot water is inefficiently circulated. At the same time, the traditional vulcanization process is prone to over-vulcanization due to the long curing time. Over-vulcanization will greatly reduce the physical properties of the rubber compound and affect the quality of the tire.
The advantages of the new tire vulcanization technology are: First, it greatly reduces the cycle time of superheated water in the tire vulcanization process, saves the energy needed for heating a large amount of superheated water, and also saves energy in the process of circulating superheated water. The energy consumption of the tire vulcanization process is greatly reduced. The new process saves energy costs by 3.38 yuan per tire compared to the traditional process. According to the annual production of 1 million sets of tire factory, theoretically, it can save 3.38 million yuan in costs; second, it shortens the tire curing time. , Increased productivity and output, but also increased equipment utilization. With each tire saving time of about 4.5 minutes, tire factory annual production capacity of 1 million sets of calculation, annual savings of 4.5 million minutes, each year can increase production of 87,400 sets of tires, an increase of 8.74%; third, reduce the external temperature time 3.5 In minutes, the supersaturation of the tread has been greatly improved. At the same time, due to the use of short-term high-temperature vulcanization, the total time is correspondingly shortened, so that the temperature and time curves of the various rubber compounds that make up the tire tend to be gentle, and the degree of vulcanization of the rubber compound is basically the same, so that the structural mechanics of the tire is more reasonable, thus increasing the mileage of the tire.
At present, the isotherm variable temperature tire vulcanization technology is being promoted in nearly 10 tire factories in China and has obtained national invention patents.