The brief introduction involves the operational performances of the pneumatic hammer before and after modification of the anvil-die connection.
简介了空气锤锤砧锤模联接方式改进前后的使用状况。
The experience of pile hole drilling using pneumatic hammer in bridge construction is reviewed. Equipments, tools and techniques are also described in detail.
文中回顾了在建桥工程中，应用风动潜孔锤钻进桥桩桩孔的经验，具体介绍了使用的设备、工具及施工工艺技术。
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.
研究了用液压机、曲柄压力机、空气锤及高速锤的打击速度对粉末冶金烧结体进行的镦粗试验。
Due to the differences of gas - liquid physical property, the key component of new pneumatic efflux hammer, namely, pneumatic efflux element, must be researched.
由于气液物性不同，故新型气动射流冲击器的核心部件——气动射流元件的切换性能需进行研究。
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“架空层钻进取心技术研究”项目为依托，研究的主要内容是空气潜孔锤跟管取心钻进技术和新型植物胶冲洗液的开发研究。
Disc spring load-deformation characteristics can directly affect pneumatic DTH hammer system vibrations.
碟形弹簧的载荷变形关系直接影响潜孔锤系统振动特征。
Disc spring load-deformation characteristics can directly affect pneumatic DTH hammer system vibrations.
碟形弹簧的载荷变形关系直接影响潜孔锤系统振动特征。
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