煤气柜防腐蚀材料和施工工艺通过技术鉴定

由江苏煤矿研究所研究开发的煤气柜防腐蚀材料和施工工艺，最近在徐州通过了江苏省科委组织的技术鉴定。该项目的研究主要是针对煤气柜不同部位所处的不同环境条件，选用不同的防腐蚀材料、施工工艺和涂装厚度，以达到最佳的防腐蚀效果和最好的经济效益。气柜属长效防腐蚀，应采用喷砂除锈。采用此防腐蚀材料和施工工艺，煤气柜防护层的使用寿命可达到8年以上。     

干式煤气柜焊接施工指导原则

煤气柜是城市煤气贮气与供气系统必不可少的设施。目前兴起的干式煤气柜比以往建造的湿式世有其优点，但施工难度大，焊接另有特点，本公司在干式煤气柜施方案，提出了减少焊接变形为主的施工指导原则，经过焊后检查与测量数据，证实综可作为今后大型气柜制作时的借鉴。     

气柜的腐蚀原因分析及防护措施

本文以锦州炼油厂１万立方米气柜为例，分析了气柜的腐蚀原因，并介绍采用以新型防腐涂料、水质缓蚀剂与阴极保护的综合防护措施及使用情况。     

10000 m3螺旋导轨湿式气柜的腐蚀与防护

近几年来螺旋导轨湿式气柜多次发生腐蚀泄漏事故， 经过对腐蚀原因分析，提出涂料与阴极保护联合防护措施.使用证明这一措施对气柜的腐蚀 防护效果明显.     

化工气柜的腐蚀与防护

介绍了各类化工气柜的腐蚀原因及耐蚀涂料防护结构的几种型式,阐述了各种类型气柜的防护措施。     

就峰避谷实现负能炼钢增效——邯钢三炼钢2座转炉煤气柜的调负荷运行

钢铁企业面临着严峻的节能减排压力。作为转炉生产的重要生产技术指标——负能炼钢,核心技术标志就是转炉煤气的回收数量和质量。文章分析了转炉煤气回收中煤气柜不同的运行方式,通过煤气柜"就峰避谷"发电方案的调负荷运行实现了邯钢三炼钢可观的经济效益。同时减少了高峰时段国家电网的运行压力。这也是国家电网鼓励的发电方式,具有显著的社会效益。     

威金斯式煤气柜底板焊接工艺研究与应用

本文从煤气柜底板直径大且无孔并与定存介质直接接触、焊接变形控制精度及气密性要求高的特点出发,针对煤气柜底板焊接施工难点,从底板结构分析、焊接材料及设备选择、底板拼装、焊接工艺与焊接顺序等方面进行分析论证,重点阐述了煤气柜底板焊接工艺的研究与应用,并对实际施工中常见的底板焊接质量问题进行了总结分析,提出了处理措施,理论与实践相结合,为今后类似工程的施工提供了技术支持。     

煤气柜防腐蚀材料和施工工艺通过鉴定

由江苏煤矿研究所研究开发的煤气柜防腐蚀材料和施工工艺，最近在徐州通过了江苏省科委组织的技术鉴定。[第一段]     

10000 m3螺旋导轨湿式气柜的腐蚀与防护

近几年来螺旋导轨湿式气柜多次发生腐蚀泄漏事故,经过对腐蚀原因分析,提出涂料与阴极保护联合防护措施.使用证明这一措施对气柜的腐蚀防护效果明显.     

煤气柜薄板的超声波检测

介绍了通过自制的二个薄板探伤试块，采用斜探头进行煤气柜薄板超声波检测的方法。     

定位导向盘防加工变形实践研究

为保证零件加工精度,研究定位导向盘防加工变形的工艺措施。通过对定位导向盘进行结构分析,确定了加工难点。制定合理的加工工艺,提出预补偿、胎具工装、一槽+两销孔配合3种防加工变形工艺措施。介绍了3种工艺措施及其组合措施用于定位导向盘防加工变形的具体过程。论述了3种工艺措施的优缺点和适用范围。加工实践结果表明:利用3种工艺措施及其组合措施均能解决定位导向盘加工变形问题,验证了这些工艺措施的有效性。3种工艺措施及其组合措施为解决类似大直径、难加工材料或高精度盘类结构零件的加工变形问题提供了参考。     

消防管道氧腐蚀防范与治理的策略

为了减少消防管道的氧腐蚀问题发生概率,需要采取有效的预防措施以及治理措施,相关管道维护人员需要立足于管道的实际现状进行维护,采取有效措施延长管道的使用寿命,为人们的生命财产安全提供可靠保障。本文阐述了消防管道出现氧腐蚀现象的预防和治理措施。     

船用螺旋桨典型腐蚀类型与防护措施研究进展

对在海水环境中使用的船用螺旋桨的海生物附着、电化学腐蚀、空泡剥蚀及冲刷腐蚀4种典型的腐蚀原理及危害进行了概述,并对相应的防腐措施作了介绍,针对目前现有的防护措施做出了归纳和分析,指出了船用螺旋桨防腐措施的研究和应用的发展趋势。     

缝隙腐蚀与电偶腐蚀的混合型腐蚀形态与防腐措施

对我国民航运营飞机使用托板螺帽的结构件腐蚀损伤的产生原因和腐蚀机理进行了分析研究,并提出了对航空器防腐设计和维修具有较高参考价值的防腐措施.取得了具有良好的防腐效果.      

天水市国际陆港葫芦河大桥建设用地地质灾害危险性评估与防治

葫芦河大桥拟建场地地处葫芦河河谷,场地内岩土条件复杂.本文对葫芦河大桥建设用地进行地质灾害危险性评估,提出了针对性的防治措施.调查评价发现水体对混凝土结构及结构中的钢筋具有弱、微弱腐蚀性,应做好防腐措施;泥岩是拟建桥梁良好的基础持力层,桩基应穿透至底层泥岩;大桥桥墩采用摩擦桩,桩基施工时采取防护措施,防止塌孔现象发生;...     

钢结构焊接变形控制

在钢结构的焊接过程中,由于焊接区域的局部收缩和应力作用将产生焊接变形,焊接变形会影响钢结构的尺寸精度、安装要求和施工进度.阐述了焊接变形的控制方法和减小焊接应力的一些措施.从焊缝坡口设置、选择合理的焊接顺序、采取反变形措施和对称焊接四个方面可有效减小钢结构的焊接变形;从焊缝设计、焊接材料和焊接参数选择、焊接工艺布局、适...     

Mikrobielle Werkstoffzerstörung – Schadensfälle und Gegenmaßnahmen: Allgemeine Schutzmaßnahmen vor biogener Materialzerstörung

Microbial deterioration of materials – case histories and countermeasures: General measures for protection against biogenic destruction of materials Many materials are adversely affected or even destroyed by microorganisms. In the cases where the causes of biogenic damage are known, specific protective measures can be taken. Depending on the material in question, these measures can be of a constructional, physical or chemical nature, and all three procedures are frequently used in combination. Constructional measures are to be found in the “buildings” sector. Examples to be mentioned are water being led off at windows and buildings being ventilated in order to prevent mould invasion in particular. Treating surfaces by applying adhesive coatings or water-repellent products can prevent attack by microorganisms on e.g. wood and metals. Physical measures are also used in protecting buildings. In addition to insulating the building, which then has few bridges of heat, the sorption behaviour of the surfaces and the heat transfer coefficients on the surfaces also influence the growth conditions for microorganisms. Materials with a high sorption capacity have particularly adverse effects on poorly insulated buildings. As chemical protective measures, use is made of preservatives and products for microbistatic treatment and also impregnating agents. These measures are applied in the paint, paper, and wood industries, among others. In addition, the choice of raw materials and the use of “rot-proof” materials in textiles and plastics can reduce microorganism-induced biodegradability and, thus, prolong the life. Not least, on the majority of production sites good production hygiene is urgently necessary as a concomitant measure.     

变频器过压过流的情况分析及采取的措施

本文对变频器出现过电压与过电流的情况进行了全面分析,并针对性地提出了避免过压过流所采取的措施,这些措施在实际应用中收到了良好的效果。     

宝钢粉煤灰处理利用与展望

介绍宝钢粉煤灰处理利用实现排出量与处理量动态平衡的各项有效措施，并提出进一步拓展利用粉煤灰的途径与措施。     

Csiszar's Generalized Error Measures for Gradient-descent-based Optimizations in Neural Networks Using the Backpropagation Algorithm

Conventionally, the square error (SE) and/or the relative entropy (RE) error are used as a cost function to be minimized in training neural networks via optimization algorithms. While the aforesaid error measures are deduced directly from the parameter values (such as the output and the teacher values of the network), an alternative approach is to elucidate an error measure from the information (or negentropy) content associated with such parameters. That is, a cost-function-based optimization can be specified in the information-theoretic plane in terms of generalized maximum and/or minimum entropy considerations associated with the network. A set of minimum cross-entropy (or mutual information) error measures, known as Csiszar's measures, are deduced in terms of probabilistic attributes of the 'guess' (output) and 'true' (teacher) value parameters pertinent to neural network topologies. Their relative effectiveness in training a neural network optimally towards convergence (by realizing a predicted output close to the teacher function) is discussed with simulated results obtained from a test multi-layer perceptron. The Csiszar family of error measures indicated in this paper offers an alternative set of error functions defined over a training set which can be adopted towards gradient-descent learnings in neural networks using the backpropagation algorithm in lieu of the conventional SE and/or RE error measures. Relevant pros and cons of using Csiszar's error measures are discussed.