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论述了腐蚀的分类、机理及影响因素,提出机械零件腐蚀深度的测量值呈正态分布,并依据机械零件腐蚀的基本规律及其模糊性,建立了数学模型,推导了机械零件耐腐蚀性的模糊可靠性计算公式,结合实例,编写了机械零件耐腐蚀模糊可靠度计算的Matlab程序,为预测机械零件剩余寿命提供参考。 相似文献
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本文介绍蔗渣煤粉锅炉用卧式玻璃管空气预热器取代立式钢管空气预热器,对防止低温腐蚀、堵灰和烟气余热利用问题进行探讨。 相似文献
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塔形囊式膜片拉杆泵的结构包括塔形囊式膜片、拉杆、上下托盘及限位器,相比起传统的膜片泵及其他正位移泵,具备较强的耐磨性、耐腐蚀性的特点,使用寿命长,流量较大,且在使用过程中故障率低,可以更好地服务于各种场合的液体输送,其能够用于输送含有固体颗粒的悬浮液、黏度较高的液体,同时在输送腐蚀性流体、热敏性流体时,具备不可替代的优... 相似文献
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For overcoming disadvantages of wood, an esterification process was employed and tetrabromophthalic anhydride (TBPA) was used as a reactive chemical agent to prepare an esterified wood with the high dimensional stability, flame resistance, and resistance to biodegradation from water-leaching. The experimental results indicated that esterification of wood plus maleic anhydride / tetrabromophthalic anhydride / glycerol could endow wood with dimensional stability, the antiswelling efficiency during water absorption (ASEw), reduction in water absorptivity (RWA), antiswelling efficiency during moisture absorption (ASEm),moisture excluding efficiency (MEE), and oxygen index (OI) of treated wood increased with an increase in the weight percent gain(WPG). And the treated wood showed great decay resistance and resistance to water leaching, too. 相似文献
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通过分别称量在酸性废齿轮油环境下汽车用原位VCp/Fe复合材料和45钢的质量,并分别观察其形态对比分析研究其耐腐蚀性。试验表明,在发动机正常工作温度(80℃-95℃)的变质酸性润滑油介质中,车用VCp/Fe复合材料作为发动机材料比45钢具有更好的耐腐蚀性能。 相似文献
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The coulostatic perturbation technology proposed in this paper is a kind of interruptive relaxation method which is characterized by the high measuring speed (usually a few seconds needed)and will not be influenced by the high resistance media. This techn 相似文献
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《农业装备与车辆工程》2013,(9):84
随着汽车轻量化概念的不断推广,塑料零部件占汽车总重的比例不断增长,已达15%~20%。汽车内外饰使用较多的塑料主要有PP、ABS、PA、GFP,常见的表面处理方式包括模压上色、喷涂油漆、装饰防护性亮镀(铬)等。其中,在塑料表面喷涂一层或多层油漆的工艺最为广泛。塑料零部件喷涂目的及种类尽管塑料件本身不会生锈,具有耐腐蚀性和一定的装饰性,但在塑料零部件上喷涂合适的涂漆,不但可以延长使用寿命,还能达到外观高光 相似文献