遥传脉冲器磨损机理研究

遥传脉冲器转子在使用过程中存在磨损现象,这些磨损直接导致泥浆脉冲器无法实现随钻仪器采集的各种井下参数的上传。根据泥浆脉冲器转子本体磨损标准,分析泥浆脉冲器转子橡胶材质的性能、泥浆中岩屑摩擦以及外围部件缺陷所导致的泥浆脉冲器转子磨损。从设备管理过程中增加动平衡测试、改进橡胶性能、改进生产到应用过程中橡胶的存放等方法被提出,这些方法有助于降低磨损风险。研制了新型金属耐磨套替换方案,水循环和角度测试表明新型泥浆脉冲器转子性能明显改进。     

钢基表面激光熔覆金属陶瓷涂层的抗磨蚀性能研究

证明了采用ＣＯ２激光熔融预涂覆于钢基体表面的金属陶瓷粉末，能够获得与钢呈冶金结合的金属陶瓷熔覆层。这种金属陶瓷熔覆层与镍基自熔合金粉末的熔覆层比较，抗气蚀和抗磨蚀性能有显著提高。     

颚板材料与双金属复合颚板的应用

从颚板的失效分析着手,对国内外颚板使用材料应用现状做了广泛的调查,分析了现有颚板材料与制造工艺方面的不足,提出应用双液双金属颚板铸造工艺方法,使高铬铸铁与碳钢达到良好的冶金结合,较好地提高了颚板的耐磨性.现场应用表明,其耐磨性较传统高锰钢颚板提高3～5倍.     

电梯曳引轮绳槽磨损的预防

本文从分析曳引轮工作情况和绳槽磨损原因入手，提出了曳引轮在选材、设计与制造工艺、安装和调试、使用和维护方面相应的标准要求以及预防不均匀磨损的办法和措施。     

Preparation and characterization of novel ZnS/sulfur-containing polymer nanocomposite optical materials with high refractive index and high nanophase contents

A series of novel transparent bulk ZnS-polymer nanocomposites with high refractive index were successfully prepared via in-situ bulk polymerization in the presence of 2-mercaptoethanol (ME)-capped ZnS NPs. The polymerization mechanism combined the step-growth and free radical polymerization of different monomers of episulfide, m-xylylene diisocyanante (XDI), 2-hydroxyethyl methacrylate (HEMA) and N,N-dimethylacrylamide (DMAA). The high refractive index of episulfide compounds, including ESGMES, ESDGEBA and MPS, were synthesized and used as monomers in polymerization systems. The cured nanocomposites with 30 wt% nanoparticles show high refractive index and good transparency. The refractive index of the nanocomposites could be continuously regulated in the range from 1.59 to 1.65 by the content of ZnS NPs and the pencil hardness is round about 5H. The content of ME-ZnS NPs can affect the thermal stability, mechanical and optical properties of the resulting nanocomposites, and the relationship between them were studied by TGA, DMA, pencil hardness test, Charpy impact test.     

梳棉盖板踵趾面磨损及维护对梳理质量的影响

探讨梳棉盖板踵趾面磨损及维护对梳理质量的影响。分析了梳棉盖板踵趾面磨损原因,盖板踵趾面作用不良对梳理质量的影响。提出了在设备维护中,采取维修踵趾面,校正大平面,校正盖板龙骨平直度等改进盖板分梳质量的具体方法。认为:减少盖板起浮,加强设备维护,保证盖板与锡林梳理隔距的准确性,能够起到精细梳理的效果,有利于提高成纱质量。     

Elite紧密纺与传统环锭纺成纱质量对比

用相同粗纱采用传统环锭纺和Elite紧密纺纺制CJ 14.5 tex纱,对两种纱线进行了性能测试对比.结果表明:紧密纺纱技术大幅度降低了成纱毛羽,且在后加工中新增毛羽少;纱线单强和耐磨性能显著提高;两种纱线的均匀度指标相当,紧密纺纱疵好于传统环锭纺.     

浆纱耐磨性能测试方法研究

介绍了测试浆纱耐磨性能的DHJSD—1型浆纱耐磨仪的工作原理，并与国内应用最广的Y731型抱合力仪进行了性能测试对比，试验证明：DHJSD—1型浆纱耐磨仪类似于织机实现了纱与纱之间及纱与金属的摩擦磨损、纱线的曲折和纱线的周期性伸长，其测试性能较好，更能反映浆纱质量的真实情况。     

Abrasion resistances of CO2 corrosion scales formed at different temperatures and their relationship to corrosion behaviour

The abrasion resistances of CO₂ corrosion scales formed on API P110 grade carbon steel at different temperatures and CO₂ corrosion behaviour of P110 carbon steel have been investigated utilising weight loss method, scanning electron microscope (SEM) and X-ray diffraction (XRD). The results showed that as the film forming temperature increased, the abrasion rate of CO₂ corrosion scales increased firstly and then decreased, the variation trend was similar to that of the corrosion rate, and the maximal abrasion rate was present at 70°C rather than 100°C, at which the maximal corrosion rate was obtained and CO₂ corrosion scales were loose and porous and were composed of FeCO₃, Fe₃C and CaCO₃. The abrasion resistances of CO₂ corrosion scales formed at 100°C was reinforced by the sand particles embedded easily in the loose and porous layer, together with a very hard residual skeleton, Fe₃C. In addition, CaCO₃ was worn out easily and substituted by SiO₂ during abrasive wear.