排序方式: 共有9条查询结果,搜索用时 15 毫秒
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察尔汗盐湖因其资源的独特性和环境的特殊性,致使资源开发过程中对环境造成的影响不同于传统的固体矿山.文章从察尔汗盐湖矿产特征出发,客观地分析了盐湖矿山开发过程中造成的环境问题,提出科学、合理的矿山环境治理及保护措施. 相似文献
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为了评估多液压缸系统方案的可靠性和故障风险,建立一种基于AMESim建模仿真平台的多液压缸系统故障仿真模型。介绍多液压缸系统的组成和液压原理;基于AMESim建立多液压缸系统仿真模型并对供油系统、举升系统和锁止系统的仿真模型和整个系统的工作模式进行了简单介绍;结合故障注入对典型失效方式进行建模;并以齐动模式的工况为例,在不同故障模式下对多液压缸系统的影响进行分析,识别在典型故障模式下各分液压缸的运行参数变化,从而调整系统设计方案。仿真结果表明:多液压缸系统仿真模型可以实现多缸、多故障模式下不同任务和功能的仿真分析,为后续多学科耦合仿真分析、多参数优化和多液压缸系统实物设计提供了参考。 相似文献
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It can directly influence the service life of the thickened oil pump through improving the wear resistance on the internal surface of the cast iron shell.The resistance to abrasion of gray cast iron HT200 is increased through hardening the surface of cast iron which is obtained as remel ting it with tungsten inert shielded gas arc.The effect of arc current and melting rate on the microstructure and wear resistance is studied.The results are compared with those of WC electrode hardfacing for castiron with chilled treating and proves that the remelting hardening principle is a much better and cheaper technique than the others. 相似文献
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