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斜轧管机双芯棒限动机构的开发与应用 被引量:3
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作者 路明超 王国亮 陈洪琪 《钢管》 CAS 2018年第4期23-25,共3页
根据斜轧管机组存在轧制周期长、产量低的情况,设计一种新型的双芯棒限动机构。介绍该新型双芯棒限动机构的结构组成,分析其优势,并介绍实际应用情况。分析认为:其设计的新型双芯棒限动机构,即一根芯棒在轧制中,另一根芯棒预穿毛管的机... 根据斜轧管机组存在轧制周期长、产量低的情况,设计一种新型的双芯棒限动机构。介绍该新型双芯棒限动机构的结构组成,分析其优势,并介绍实际应用情况。分析认为:其设计的新型双芯棒限动机构,即一根芯棒在轧制中,另一根芯棒预穿毛管的机构,可以实现芯棒的实时控制,缩短芯棒循环的时间,提高轧制节奏,延长芯棒的使用寿命,提高钢管产量以及成材率,降低生产成本。 展开更多
关键词 无缝钢管 斜轧管机 双芯棒限动机构 生产效率
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无缝钢管芯棒限动机构改造 被引量:2
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作者 苏志强 宗福强 叶友华 《天津冶金》 CAS 2015年第2期44-46,共3页
为提高产品精度,确保平稳生产,通过对无缝钢管套芯棒限动轧制机构进行国产化改造,对限动齿轮齿条、限动夹持头及床身支承方式进行改造,有效地提高了设备的稳定性,实现了限动机构高精度平稳生产,降低了设备的维护费用。
关键词 芯棒 限动机构 改造
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Φ100mm热轧无缝钢管限动液压系统选型和使用
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作者 谢春延 《江西冶金》 1996年第5期29-31,共3页
在Φ100mm热轧无缝钢管的延伸轧机中采用了限动芯棒系统,产品的壁厚精度、钢管内表面质量和延伸系数的提高,均取得了令人满意的效果。
关键词 热轧 无缝钢管 限动机构 液压系统
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Software Tools for Some Natural Language Texts Computer Processing
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作者 Jemal Antidze Nana Gulua 《Computer Technology and Application》 2012年第3期219-225,共7页
Software tools are developed for computer realization of syntactic, semantic, and morphological models of natural language texts, using rule based programming. The tools are efficient for a language, which has free or... Software tools are developed for computer realization of syntactic, semantic, and morphological models of natural language texts, using rule based programming. The tools are efficient for a language, which has free order of words and developed morphological structure like Georgian. For instance, a Georgian verb has several thousand verb-forms. It is very difficult to express rules of morphological analysis by finite automaton and it will be inefficient as well. Resolution of some problems of full morphological analysis of Georgian words is impossible by finite automaton. Splitting of some Georgian verb-forms into morphemes requires non-deterministic search algorithm, which needs many backtrackings. To minimize backtrackings, it is necessary to put constraints, which exist among morphemes and verify them as soon as possible to avoid false directions of search. Software tool for syntactic analysis has means to reduce rules, which have the same members in different order. The authors used the tool for semantic analysis as well. Thus, proposed software tools have many means to construct efficient parser, test and correct it. The authors realized morphological and syntactic analysis of Georgian texts by these tools. In the presented paper, the authors describe the software tools and its application for Georgian language. 展开更多
关键词 Software tools parsing algorithm BACKTRACKING syntactic analyzer constraints.
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Computer Aided Thermal Stress Analysis of TBC Coated Specimen
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作者 Yasar Kahraman Ibrahim Kutay Yilmazcoban Imdat Taymaz 《Journal of Mechanics Engineering and Automation》 2011年第2期83-86,共4页
Thermal barrier coatings (TBC) have been improved for the engine applications. During working process of the engine, components were subjected to thermal stresses. For simulating thermally stressed engine parts, dis... Thermal barrier coatings (TBC) have been improved for the engine applications. During working process of the engine, components were subjected to thermal stresses. For simulating thermally stressed engine parts, disc specimen was objected to airflow at the temperatures about 1,000℃. In this study, finite element structural and thermal analyses were carried out on both uncoated (without coating) and ceramic-coated disc specimen using ANSYS code. A 150 micron super alloy bond coating (NiCrAIY) was first applied to the specimen. Then, the disc specimen was covered by 350 micron thickness of Mullit (3Al2O3.2SiO2) as a top coating. These analysis were performed for detecting the possible thermally problem areas. The disc's thermal stressed problematic areas were determined by the finite element analysis was helpful for improving the geometry and TBC. 展开更多
关键词 Finite element analysis thermal barrier coating stresses.
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