25万t级矿石接卸码头机械取制样设施工艺设计

以连云港港旗台港区25万t级矿石码头机械取制样设施为例,介绍矿石机械取制样的工艺系统.该系统符合国际标准,功能完备,配置优化,布置科学,且充分考虑实际操作需要,体现了人性化的特点.     

焊接工艺的质量分析和质量控制

焊接工艺质量是电子计算机,尤其是军用计算机可靠性的关键。文章对影响焊接工艺质量的各个环节,如焊接机理、焊接要素、焊料、助焊剂、阻焊剂、焊接设备、焊接方法等都进行了分析,从中提出控制质量的措施和办法。这是实际工作经验总结,对提高军工生产质量很有参考价值。     

铸造复合化技术与铸铁接合技术的动向

介绍了铸造复合化技术的发展新动向,着重阐述了压力浇注法、离心铸造法等新技术、新工艺;同时还叙述了铸铁接合技术的新进展;指出铸造复合化技术将对多功能铸件和复合化铸件的推广应用作出贡献。     

以铁代铜——解决起动机铣齿问题的简单方法

介绍一种把电磁开关中吸引线圈的首端与保持线圈的首端分开，各自独立设置接线柱对外引出的起动机，从而用极其简单的方法解决了铣齿问题，其中吸引线圈可用铁丝绕制。详述其工作原理，提供了改装方法。     

Determination of the transportable moisture limit of iron ore fines for the prevention of liquefaction in bulk carriers

In 2013, over 500 million metric tons of Iron Ore Fines (IOF) were transported around the world using bulk carriers. Under certain conditions IOF, while being transported, can possibly undergo liquefaction. Since 2006, there has been eight reported bulk carrier casualties possibly caused by the liquefaction of IOF. The objective of this study is to evaluate, compare and verify the limitations and relevance of the Proctor/Fagerberg, Flow Table and Penetration test methods that are used to determine the Transportable Moisture Limit (TML) of IOF. The TML is the maximum gross water content that bulk cargoes, including IOF, may contain while being transported at sea without being at risk of liquefying. A thorough literature review, along with laboratory research, was carried out to compare the TML results from the three leading test methods to determine whether they produce reliable results when testing IOF. The study concludes that the three test methods, as stated in the 2012 International Maritime Solid Bulk Cargoes Code, are unverified and therefore not appropriate for testing IOF. This is due to the variation in the results produced by the three test methods and also due to the difference in the physical properties of IOF when compared with the materials that were originally intended for testing. It is noted that the TML alone may not control the potential liquefaction of IOF and further studies, regarding the physical properties and system variables, which cause the material to liquefy, are required to determine the liquefaction potential of IOF.     

二灰稳定铁尾矿渣混合料用于道路基层的试验研究

对石灰粉煤灰稳定铁尾矿渣混合料的强度、水稳定性及冻融稳定性等进行试验研究,并利用XRD和SEM等方法观察、分析混合料固化体的结构特征。结果表明：铁尾矿渣掺入石灰和粉煤灰后,其强度随龄期增长而增长,具有半刚性材料的特性。     

现代化大型临港钢铁产业码头工程平面布局探讨

现代化大型临港钢铁产业码头具有规模大、货种多的特点。以湛江钢铁工程码头工程为例,通过分析总平面布置所考虑的主要影响因素,提出岸线利用率高、物料流程短、节能、环保、可持续发展的平面布局方案,为其他类似工程设计提供参考。     

大型钢铁企业组建船队策略研究

针对铁矿石运输市场发展现状,阐述了我国大型钢铁企业组建船队的必要性;提出了组建船队的两种不同模式,应用动态规划模型确定钢铁企业组建船队规模;以合理规模组建船队实现较低运输成本完成运输需求,提高企业产业链控制能力,提升企业利润空间;以B钢铁企业2011—2015年的船队规模确定为算例,验证了所建立的方法有效。     

营口港鲅鱼圈港区30万t级矿石码头结构设计与施工

营口港鲅鱼圈港区30万t级矿石泊位紧邻既有矿石码头和防波堤而建,施工地域狭小、限制条件较多.本工程码头结构设计充分考虑项目的施工条件,能保证在码头施工期间不影响既有泊位的正常生产.该方案充分满足了业主的要求,技术经济指标合理,施工方案可行,有利于缩短项目工期,可供类似工程参考.     

云景高速公路高墩盖梁抱箍法设计与施工

该文对云景高速公路二合同段溪口大桥高墩柱桥梁的盖梁采用抱箍法设计与施工技术作了详细叙述,供同类工程施工参考。