废旧钢丝错体再制造工程翻新轮胎工艺及补强机理

为了提高工程翻新轮胎的承载及抗刺爆性能,利用废旧子午线轮胎钢丝作为补强体,采用镀层法,通过废旧钢丝表面镀铜-镀锌处理,设计了废旧子午线轮胎钢丝错体再制造工程翻新轮胎生产工艺,主要包括局部修复与补强工程子午线轮胎钢丝帘线断裂层工艺、旧胎体层与翻新胎面胶层之间补强一层子午线废旧轮胎钢丝帘布层工艺.分析了废旧子午线轮胎钢丝错体再制造工程翻新轮胎补强作用机理,有效实现了废旧钢丝与轮胎橡胶的黏合,并对错体再制造工程翻新轮胎技术优势进行了分析,采用模硫化法对26.5R25全钢工程机械子午线旧轮胎进行了错体再制造翻新生产.结果表明,废旧钢丝错体再制造工程翻新轮胎承载能力和抗刺爆能力大大增强,其使用寿命为同型号普通翻新轮胎的1.2倍,接近同型号新轮胎的使用寿命,综合性能表现良好.

Process and reinforcement mechanism of dislocation remanufacture of retreated OTR tires by use of waste steel wire

In order to improve the bearing and anti-impaling performances of retreated off the road (OTR) tires, the production process of dislocation remanufacture was designed using waste radial tire steel wire as a reinforcing body through the coating method of plating copper-zinc on the surface of waste steel wire. The production process includes the local repair and reinforcement process of engineering radial tire steel cord fracture layer, and the reinforcement process of waste tire wire cord layer between the old carcass and retreated tire surface. The reinforcement mechanism about dislocation remanufacture of retreated OTR tires with steel wire of waste radial tire was analyzed, the adhesion of waste steel wire and tire rubber was effectively realized, and the technology advantage of dislocation remanufactured retreated OTR tires by use of steel wire of waste radial tire was analyzed, 26.5R25 radial retreated OTR tires were remanufactured using the mold vulcanization. The experimental results show that the bearing and anti-impaling performances of dislocation remanufacture of retreated OTR tires with steel wire of waste radial tire are further increased, the service life is 1.2 times of the same type of ordinary retreated tire, close to service life of the same type of new tire, and the comprehensive performance is good.