共查询到6条相似文献,搜索用时 62 毫秒
1.
介绍了国内外长期效防腐技术现状:一是较为成熟的以喷涂金属涂层作为底漆的复合涂层体系,二是以富锌底漆为配套的重防腐涂层体系。列举了3种典型桥梁钢结构大气区防腐涂层配套试验室测试差异。根据厦门第二东通道所处的环境特点,结合国内外桥梁钢结构防腐技术,为项目提出可行的钢箱梁外表面防腐蚀技术方案为"环氧富锌底漆-环氧中间漆-氟碳面漆"防腐涂层。 相似文献
2.
8项原则是制定ISO9000:2000族标准,包括ISO10012:2003测量管理体系标准的理论基础。8项原则是国际标准化组织在修订ISO9000:1994族标准和起草ISO9000:2000族标准过程中广泛征求了世界著名的质量管理理论权威的意见并总结了各国多年来ISO9000族标准贯彻的实际经验总结得出的理论。 相似文献
3.
4.
Taizhou Yangtze River Highway Bridge is a large span suspension bridge with three pylons. The elastic cables are installed to connect the steel tower and the steel box girder. The constraints can increase the safety coefficient of the middle saddle, and improve the stress conditions of the middle pylon and decrease the deflection in the middle of the main girder, as well as the longitudinal displacement of the main girder caused by live loads. The anchorage boxes of the elastic cable are installed in the wind fairing outside the vertical web plate of the box girder. Two anchor boxes form a pair and are arranged parallelly. Eight anchor boxes are installed in the bridge. In this paper, the design scheme and the technical difficulties in manufacturing are briefly discussed with the precision control techniques. 相似文献
5.
介绍了用CO_2堆焊35CrMo钢钻井泵阀箱密封面磨损修复工作,通过试验表明,采用Φ1.2mm的H08Mn2Si焊丝,以短路过渡CO_2焊法施焊,可以获得致密、耐磨的堆焊金属层。该法已成功地用于生产,取得了良好的经济效益。 相似文献