简介:摘要:传统的隧道拱架连接钢板加工是现场施工人员通过气割加工,成本高,效率低,施工质量难以控制。为适应高速铁路工程质量要求,简化施工工序,加快施工进度,保证施工质量,节约工程成本,实现标准化施工,本项目采购等离子切割机一台,集中加工隧道拱架连接钢板。
简介:Amorphouscalciumphosphatenano-powdersmadefromradiofiequency(RF)plasmaspraying;Anadvancedmodelforplasmasprayingoffunctionallygradedmaterials;AnestimateofthetemperatureofsemitransparentoxideparticlesinthermalSpraying;BioactivityofPlasmaSprayedWollastoniteCoatingsinSimulatedBodyFluid
简介:[篇名]Aradiologicalfollow-upstudyofplasma-sprayedfluorapatite(FA)coatings,[篇名]ARamanStudyonPlasma-SprayedThin-realBarrierCoatingsDuringThermalCycling,[篇名]AbrasionandSlidingWearofNanostructuredCeramicCoatings,[篇名]Abrasionbehaviorinnanostructuredalumina-titaniacoatings,[篇名]Al{sub}2O{sub}3/YAGcompositecoatingpreparedbyplasmasprayprocess,[篇名]Aluminareinforcedstainlesssteelcoatingsbyplasmasprayingmechanofusedparticles,[篇名]Aluminumbasednanostructuredcompositecoatings:processingmicrostructureandwearbehavior.
简介:从螺栓外形尺寸及材料力学性能等方面阐述ASTMA325结构螺栓用大六角头高强螺栓(GB1228-91规范规定)代用的依据;论述两种螺栓在抗剪连接设计及施工要求方面的不同;介绍代换后质量监督控制要点.