• Due to the differences of gas - liquid physical property, the key component of new pneumatic efflux hammer, namely, pneumatic efflux element, must be researched.

    由于不同,故新型气动射流冲击器核心部件——气动射流元件的切换性能进行研究

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  • The experience of pile hole drilling using pneumatic hammer in bridge construction is reviewed. Equipments, tools and techniques are also described in detail.

    文中回顾了建桥工程应用风动潜钻进桩桩经验,具体介绍了使用的设备工具施工工艺技术

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  • The upsetting test of metal powder sintered preform by blow speed of the hydraulic press, crank press, pneumatic hammer and high energy rate forging hammer was reported.

    研究液压机曲柄压力机、空气锤高速打击速度粉末冶金烧结体进行的镦粗试验

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  • The main contents of this thesis are the research of simultaneous casing & coring method by pneumatic Down-the-Hole (DTH) hammer drilling and the innovation of a novel vegetable-gum drilling fluid.

    本文是以中国水电顾问集团成都勘测设计研究院负责“架空层进取心技术研究”项目为依托,研究主要内容空气跟管钻进技术新型植物胶冲洗液开发研究。

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  • Disc spring load-deformation characteristics can directly affect pneumatic DTH hammer system vibrations.

    弹簧的载荷变形关系直接影响系统振动特征

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  • The brief introduction involves the operational performances of the pneumatic hammer before and after modification of the anvil-die connection.

    简介空气锤锤砧锤模联接方式改进前后使用状况。

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  • The brief introduction involves the operational performances of the pneumatic hammer before and after modification of the anvil-die connection.

    简介空气锤锤砧锤模联接方式改进前后使用状况。

    youdao

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