共查询到20条相似文献,搜索用时 8 毫秒
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本文结合珠钢轧机生产的实际,在总结经验的基础上系统地论述了板带热轧机CVC装置电液故障及相关因素,列出了生产现场故障分析的一般过程。文章指出CVC故障主要可归类为位置控制精度达不到要求、伺服阀驱动零偏电流大于正常范围、油缸位置无法控制、油缸控制压力建立不起等。本文同时列举了故障-症状的关系表。 相似文献
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分析了支撑剂在回转窑中焙烧的热力和动力条件,调整相关焙烧设备的温度参数,来消除细粉过细、升温过快、焙烧区域过短等不利于高温焙烧的因素,使物料能够在最佳焙烧温度区得到有效、均匀的焙烧。以达到产品耐压强度、焙烧温度、成品率三者的统一。 相似文献
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将在企业从事三十多年的环境监测、环保管理工作中的经验进行升华与提炼,深刻体会到:在实际工作中应充分利用国家环保政策,是有效降低企业环保成本的重要手段. 相似文献
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从作者、编审队伍的培养,专题栏目的策划、各种学术会议的组织等视角探讨了科技期刊的特点,并在推行数字化建设、流通体系、期刊标准化工作等方面分析了提高科技期刊影响力的策略。 相似文献
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指出技术类期刊在广告宣传要点选择、内容合法性审查、语言编辑加工、画面创意设计等方面存在的问题,探讨解决问题的方法。强调提高广告宣传工作质量的关键在于培养出高素质的从业人员。 相似文献
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《粉末冶金学》2013,56(26):114-129
Abstract“Powder forging” is a hybrid process in which preforms made by conventional PM techniques are hot forged in closed impression dies. The process combines many of the best features of both conventionally made PM parts and hot forgings. Although the process is still in the development stages, indications are that “powder-forged” components can be produced having mechanical and physical properties equivalent to conventionally wrought steels, together with the complexity and dimensional accuracy normally associated with sintered parts.The process appears an attractive and economic manufacturing route for many components for the following reasons: Material utilization is better than in conventional forging; detail and tolerances obtainable can lead to the elimination of much, if not all, finish machining; tight weight tolerances are possible in the “as-forged” condition, which on components such as connecting rods might ultimately lead to the elimination of weight-balancing operations.The paper describes the features of the powder-forging process, and the production route is briefly outlined. Weight and machining savings are illustrated by reference to actual components made by G.K.N. Forgings Ltd. Forging load/preform density relationships are briefly mentioned, and the importance of preform design and forging-tool design emphasized. The main factors covering preform design are outlined.Examples of mechanical properties obtained on powder-forged material are quoted, and it is explained that provided powder purity is controlled these can be comparable to those of conventionally wrought steels. The economics of the process is briefly discussed, and future development possibilities mentioned. 相似文献
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本文阐明了对铁水同时脱磷、脱硫的有利条件,同时对影响预处理效果的几个技术问题展开讨论,提出提高预处理效果的若干技术措施。 相似文献
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昆钢6号高炉连续生产12年,目前高炉生产状况良好,但是出现了炉底煤气泄漏、炉体上涨等问题。针对这些问题,对6号高炉在长寿方面所取得的经验进行了总结和分析,希望对同类型高炉有所借鉴。 相似文献
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环境污染末端治理的热力学认识 总被引:3,自引:0,他引:3
末端治理不能根本解决环境污染,反而会引起更多的环境问题。它应用在解决和预防局部环境过度恶化方面卓有成效,但不能也不应作为评价环境保护力度与成果的指标。清洁生产原则符合最小熵产生原理,是减轻全球环境问题的必由之路。 相似文献
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《粉末冶金学》2013,56(26):309-318
AbstractThe processes used in the production of friction materials for aircraft brakes are outlined. The stringent quality-control procedures adopted at all stages of raw-material testing, mixing, pressing, and sintering are discussed and examples given that show the necessity for these procedures. The control system results in an end product that gives reproducible friction properties and wear rates and can fulfil the requirements of an emergency stop. 相似文献
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现代企业的技术改造主要包括产品改造、设备改造、工艺改造、管理改造等多方面的内容。企业在坚持技术进步的前提下,通过巧改、巧革达到充分利用和发掘原有生产能力和潜力的目的,以实现资产的保值、增值和资源的最优配置。 相似文献
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技术创新对于当代企业不啻为生命线的事实告诉我们 ,企业必须将技术创新置于重要位置。然而重视创新 ,提倡创新需要有科技组织制度来作保障。文章从三个方面对“制度”和“创新”两者的关系进行了探讨。并借鉴国内外企业成功经验 ,提出了相应解决办法。 相似文献
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