低合金马氏体耐磨钢的工况适应性

破碎、粉磨作业设备中,内衬板的选用往往不被重视,一些耐磨性好的材料,因不能适应工况条件而降低了使用寿命。通过调整马氏体钢的成分,经热处理后,进行工况条件的耐磨适应性试验,使马氏体钢的成分和组织在特定工况条件下的耐磨性最优化,可以提高内衬板的使用寿命,降低成本,提高生产效益。     

BIIR/NR并用的无内胎气密层混炼工艺改进

根据聚合物相容性和门尼粘度的关系,分析测试了炭黑共混物在混炼过程中影响NR和BIIR的门尼粘度的因素,通过改进生产工艺改变共混物中炭黑分布,缩减混炼温度对溴化丁基胶和天然胶门尼粘度的影响程度。结果显示,试验混炼工艺降低混炼过程中两胶橡相的门尼粘度差异,减小共混物中溴化丁基胶相和天然胶相的弹性恢复差异过大造成的影响,从而改善压延覆胶皮的过程中的工艺及外观性能。     

Influence of organoclay dispersion on air retention and fatigue resistance of tyre inner liner compound

In a pneumatic tire, the contained air carries the load of the vehicle and also augments performance for other functional requirements, such as, rolling resistance, ride and handling, durability, and so on. The inner liner of the tire is responsible to ensure air retention by virtue of its high air impermeability. The present study focused on developing inner-liner compounds of improved air impermeability by utilizing platelet filler (layered silicate). The obtained organoclay was subjected to a pre-treatment process called exfoliation to increase the d spacing between the clay layers that further improved the morphological aspect of the compound. The inner-liner compound has been modified by partial replacement of carbon black with organically modified bentonite clay in 1:1 and 2.5:1 ratio. Air impermeability of rubber compounds was tested in a gas permeability tester. Field emission scanning electron microscope, transmission electron microscope, atomic force microscope, and x-ray diffraction were utilized to understand the distribution and dispersion of clay in the rubber compounds. Fatigue crack growth analysis was carried out to measure the fatigue life of the materials. The modified compounds exhibited air impermeability improvement from 7% to 30% vs the reference carbon-black filled compound with improved mechanical properties and filler dispersion.     

德国TROESTER公司内衬层生产线液压系统分新

介绍了德国TROESTER公司生产的内衬层生产线液压系统的基本结构和各液压站及液压系统的主要技术参数.分析了各部分液压系统（如压延液压站、压延型辊更换、压延芯辊定位、轴交叉、挤出机缓中、机头锁紧、压延润滑、挤出机液压站、挤出机移动、挤出上下机头等系统）的基本元件组成、工作原理及工作流程.总结了生产线液压系统的特点.     

石蜡油在全钢载重子午线轮胎气密层中的应用

研究石蜡油在全钢载重子午线轮胎气密层中的应用,并与使用芳烃油的胶料进行性能对比.结果表明,全钢载重子午线轮胎气密层胶料中采用石蜡油替代芳烃油,胶料性能变化不大,压型工序复合时过渡层与气密层胶料能很好粘合,对胶料气密性无重大影响.成品轮胎耐久性能超过国家标准,速度性能达到企业要求.     

CFD模拟技术在陶瓷内衬多通道煤粉燃烧器中的应用

陶瓷具有耐高温的特性,多作为内衬应用在多通道煤粉燃烧器上来提高煤燃烧效率。本文通过CFD技术进行数值模拟,分析了温度、速度、NO流场的影响,验证了陶瓷多通道煤粉燃烧器的优越性。     

制冰机门内胆吸塑模设计

分析了制冰机门内胆塑件的结构特点与成型工艺,介绍了制冰机门内胆吸塑模结构、设计要点与模具工作过程,对门内胆密封凹槽处脱模机构进行了重点介绍。实践证明,模具结构合理,动作可靠,塑件质量满足设计要求。