共查询到19条相似文献,搜索用时 62 毫秒
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介绍轮胎用锦纶66帘布压延过程及其工艺控制、压延帘布常见质量问题及其解决措施。严格控制热炼胶塑性值和供胶温度、保证原帘布干燥、导开帘布松紧一致、帘布对中、供胶和递布稳定、帘布压延张力和压延速度合理和均衡、压延机辊温和帘布冷却辊温稳定、压延机积胶量适当、压延帘布卷取协调性好,以及严格工艺操作,可以有效解决压延帘布幅宽和厚度不合格、扒皮、露白、罗股、劈缝、跳线、出兜、压坏和褶子等质量问题。 相似文献
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确定合理的压延工艺参数提高胶帘布的压延质量 总被引:2,自引:0,他引:2
根据胶帘布压延的原理,针对我厂胶帘布出现的厚度不均,两边压不紧,中间稀缝等问题,采取修正辊筒的中高度,调整辊筒温度及严格操作规程等措施,提高胶帘布的压延质量,使胶帘布的利用率上升,为企业赢得了效益。 相似文献
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分析轮胎生产中压延锦纶帘布打褶的原因,并提出相应的解决措施。通过改造制动线路,在帘布卷取结束、摆架换工位时释放电机抱闸;采用风控制动盘调节垫布张力;卷取卷径采用直流调速器和中心卷取控制,卷取卷径张力锥度递减控制等措施,帘布打褶现象明显减少,帘布有形耗损率下降到0.4%。 相似文献
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本文简要介绍了成型机设备在成型过程中,各部件装置对轮胎质量的影响,以及针对相关影响,对成型机设备日常管理和维护保养工作,包含日常点检、预防性维修、精度校验等相关事项. 相似文献
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根据G.Ardichuili的压延理论,分析了聚氯乙烯压延加工过程中物料的流变行为,指出存料是影响压延透明片材的厚度均匀性、外观质量的重要因素之一。根据产品的厚度、柔软率,正确控制辊隙存料量是提高压延透明片材质量的重要手段之一。 相似文献
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分析了轮胎生产中挤出制品生产稳定性的影响因素,介绍了提高挤出制品生产稳定性的几种方法,如提高挤出机组的稳定控制、生产联动性的稳定控制、其他影响因素的稳定性控制等。 相似文献
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In‐Su Han Chang‐Bock Chung Hyeong‐Gwan Jeong Sung‐Ju Kang Seung‐Jai Kim Ho‐Chul Jung 《应用聚合物科学杂志》1999,74(8):2063-2071
Numerical algorithms and computer programs have been developed to determine optimal cure steps in a tire curing process. A dynamic constrained optimization problem was formulated with the following ingredients: (1) an objective function that measures product quality in terms of final state of cure and temperature history at selected points in a tire; (2) constraints that consist of a process model and temperature limits imposed on cure media; (3) B‐splines representation of a time‐varying profile of cure media temperature. The optimization problem was solved using the complex algorithm along with a finite element model solver. Numerical simulations were carried out to demonstrate the procedure of determining optimal cure steps for a truck/bus radial tire. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 74: 2063–2071, 1999 相似文献
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Maxwellian fluid flow between asymmetric calenders was analyzed by the numerical solution to the simplified equations of motion
and energy equation. The solution techniques combined the power-law weighted upwind difference method for the energy equation
with the analytical solution of the momentum equations. The calculated results provided not only pressure and temperature
distributions of the flow field, but also the power consumption and the roll separating force of the calendering processes.
The decrease in the elastic shear modulus led to the reduction in the temperature profile as well as in the power requirement.
The asymmetry in the roll speeds generated higher temperature field throughout the whole flow region due to the higher viscous
heating, compared with the case of the symmetry in the roll speeds. 相似文献