Method for preventing aerotyre of small dimension generating naked wire at aerotyre sidewall
A technology of aviation tires and small specifications, which is applied to tires, other household appliances, household appliances, etc., can solve the problems of less than 50% qualified rate, decreased product qualified rate, and low number of carcass plies, etc., so as to improve the qualified rate of products. , The effect of prolonging the setting time and reducing the outflow of rubber
Active Publication Date: 2011-02-16
中国化工集团曙光橡胶工业研究设计院有限公司
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[0002] Small size aviation tires mainly refer to 6 For the following aircraft tires, due to the characteristics of the specifications, the number of carcass plies is small, generally only 2-4 layers, and the sidewall is thin, generally 0.5-1.0mm, so the vulcanization process is difficult to control. The stability of the process is poor, and the problem of exposed line on the sidewall is easy to appear after vulcanization, resulting in a decline in the pass rate of the product, and the pass rate is even less than 50% in severe cases
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[0014] When manufacturing small-sized aviation tires, in order to solve the problem of sidewall exposure of small-sized aviation tires, the following processes are adopted:
[0015] 1. Reduce the exhaust hole diameter on the tire mold from the current Φ1.5mm to Φ1.0mm;
[0016] 2. Thicken the sidewall rubber from the current 0.5-1.0mm to 2.0mm;
[0017] 3. Shorten the internal pressure hot water and external temperature rise time before positive vulcanization, which is 2 minutes less than the normal process;
[0018] 4. Appropriately reduce the setting pressure, the pressure is 0.2MPa; prolong the setting time, the time is 7 minutes.
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The invention discloses a method which prevents an exposed stitching of the side wall of an aerotire with small size and comprises the following techniques: (1) the exhaust aperture on a tyre mold is reduced; (2) sidewall rubber is thickened; (3) before optimum cure, the time of collecting inner-pressure heat water and the outer temperature warming are shortened; (4) the sizing pressure is reduced and the time of sizing is prolonged. The invention has the advantages that by adopting technique, the problem of the exposed stitching of the side wall of the aerotire is solved, and the production qualification rate is increased.
Description
technical field [0001] The invention relates to small-sized aviation tires, in particular to a method for preventing sidewall exposure of small-sized aviation tires. Background technique [0002] Small size aviation tires mainly refer to 6 For the following aircraft tires, due to the characteristics of the specifications, the number of carcass plies is less, generally only 2-4 layers, and the sidewall is thinner, generally 0.5-1.0mm, so the vulcanization process is difficult to control. The process stability is poor, and the problem of sidewall exposed lines is very likely to occur after vulcanization, resulting in a decline in the product qualification rate, and the qualification rate is even less than 50% in severe cases. Contents of the invention [0003] The purpose of the invention is to disclose a method for preventing sidewall exposure of small-size aviation tires. [0004] The technology that realizes the purpose of the invention taken is: [0005] 1. Reduce th...
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IPC IPC(8): B29D30/06B29C33/10B29C35/04
Inventor 马英
Owner 中国化工集团曙光橡胶工业研究设计院有限公司
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