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CCF表彰2023年度csp优秀单位

计算机科学 2024年第3期51卷 182-182页

为了进一步推进csp认证考试,鼓励更多学生参与csp,提高编程能力和计算机素养,CCF决定从2020年开始,由csp认证委员会提名,CCF秘书长批准,每年对认证点高校进行年度评审。根据各学校的组织参加人数情况(零分人数除外且超过200人)和全年排... 详细信息

为了进一步推进csp认证考试,鼓励更多学生参与csp,提高编程能力和计算机素养,CCF决定从2020年开始,由csp认证委员会提名,CCF秘书长批准,每年对认证点高校进行年度评审。根据各学校的组织参加人数情况(零分人数除外且超过200人)和全年排名前十学生成绩总分排名,由高到低,CCF分别评选出排名前十的年度CCF csp“组织优秀单位”和年度“成绩优秀单位”,以表彰他们为CCF csp认证工作做出的重要贡献。

关键词：计算机素养 CCF csp 表彰排名年度

Quantitative analysis on strengthening mechanism of ultra-thin hot strip of low carbon steel produced by csp technique

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Journal of University of Science and Technology Beijing 2004年第5期11卷 425-427页

作者： HaoYu YonglinKang XueyingXiong KeluWang JieFu GuijiangChen LiejunLi MaterialsScienceandEngineeringSchool UniversityofScienceandTechnologyBeijingBeijing100083China GuangzhouZhujiangSteelCo.Ltd. Guangzhou510620China

Based on experimental data of positron annihilation technology, electrolyticdissolution technique, electron back-scattered pattern, etc. and by analysis the strengtheningfactors, the strengthening mechanism of ultra-thin hot strip of low carbon steel produced by csp(Compact Strip Production) technique was investigated. The value of each strengthening mechanism andits contribution percentage to yield strength were achieved. The results show that refinementstrengthening is the predominant strengthening mode; precipitation strengthening and dislocationstrengthening are second to it, their contributions to yield strength are almost equal.

关键词： csp positron annihilation technology electrolytic dissolution technique electron back-scattered pattern strengthening mechanism hot strip

Comparison of Grain Size in Plain Carbon Hot-Rolled Sheets Manufactured by csp and Conventional Rolling Processing

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Journal of Iron and Steel Research(International) 2012年第1期19卷 17-22页

作者： ZHU Xue-song ZHU Guo-hui MAO Wei-min School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China School of Materials Science and Engineering Anhui University of Technology Ma＇anshan 243002 Anhui China

Average grain size and grain size distribution in as hot-rolled SPHC, SPHD, and SPHE sheets manufac- tured by compact strip production （csp） processing and traditional continuous casting and rolling （CCR） processing respectively were investigated by quantitative metallographic method. The results show that the average grain size and distribution width of grain size in sheets manufactured by csp processing was obviously larger than that by CCR processing. It was analyzed that multi-phase transformation and high reduction ratio in CCR processing resulted in refining grain size, which would be dominant reason for controlling grain size. In plain carbon steels such as SPHC, SPHD and SPHE, the effect of fine precipitation in csp on behavior of deformation and recrystallization of austenite during roiling, and consequent refinement of grain size seem not to be as important as the effect of reheating and roughing in CCR processing. Homogenizing in reheating and refining grain size in roughing in CCR processing would refine final grain size and also make grain size homogenized, Very coarse grain size would result in mixed grain size, large distribution width of grain size due to interaction of static and dynamic recrystallization in csp processing

关键词： csp CCR hot-rolled plate grain size

Microstructure and mechanical properties of automobile beam steels produced by EAF-csp process

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Journal of University of Science and Technology Beijing 2006年第6期13卷 508-511页

作者： Zhengzhi Zhao Yonglin Kang Hao Yu Materials Science and Engineering School University of Science and Technology Beijing Beijing 100083 China

The microstructure, mechanical properties, and misorientation of automobile beam steels produced by EAF-csp process were studied using optical microscopy （OM） and electron back-scattered diffraction （EBSD）. It is shown that the microstructure of strips is mainly polygonal ferrite, and the average grain size is about 5-8 μm. The electron back-scattered diffraction results show that grain boundaries in ferrite are basically high-angle grain boundaries without remarkable preferred orientation. Hot strips of automobile beam steels possess a good combination of strength and plasticity because of their fine microstructures and low quantity of impurities.

关键词： steel csp microstructure mechanical property electron back-scattered diffraction

Metallurgical quality of csp thin slabs

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Journal of University of Science and Technology Beijing 2004年第2期11卷 106-109页

作者： DeguangZhou JieFu YonglinKang ZhongbingWang： JingLi ZhongboXu MetallurgicalandEcologicalEngineeringSchool.UniversityofScienceandTechnologyBeijing Beijing100083China GuangzhouZhujiangSteelCo.Ltd..Guangzhou510730 China

The casting structure, chemical composition segregation, dendrite arm space,inclusiona and during the csp (compact strip production) rolling process were investigated. Theresults show that the csp thin slab has a feature of uniform fine grains, more columnar crystals,less central porosity and segregation etc. There is no great difference in macrostructure betweenthe csp thin slab and conventional slab; however, the fine dendrite structure of the csp slab ismore uniform. Moreover, the central porosity and segregation are obviously improved after the firstpass; and the dendrite is bent along the rolling direction rather than broken into pieces. Smallinclusions with the diameter less than 10 mum in the csp slab are dominantly consisted of aluminatesformed by Al deoxidation and Ca treatment and not floating out of the melt. The large sizeinclusions found in the continuous casting slab are very few.

关键词： csp casting structure segregation dendrite arm space inclusion

Microstructure evolution and precipitation behavior of low carbon steel hot strips produced by csp

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Journal of University of Science and Technology Beijing 2004年第4期11卷 364-367页

作者： YonglinKang KeluWang HaoYu JieFu DeluLiu ZhongbingWang XuewenChen MaterialsScienceandEngineeringSchool UniversityofScienceandTechnologyBeijingBeijing100083China MetallurgicalandEcologicalEngineeringSchool UniversityofScienceandTechnologyBellingBelling1000153China GuangzhouZhujiangSteelCo.Ltd. Guangzhou510620China

The microstructures of low carbon steel before, during and after rollingdeformation of each stand were observed using optical microscope. The result showed that themicrostructures were very fine after six passes rolling deformation. The effect of the first standreduction on microstructure refinement was very distinct. During the rolling process, with theincrease of the accumulated strain, the microstructures would further refine, and the density ofdislocation would increase at the same time. In continuous casting thin slabs and each finishingstand, lots of observed precipitates were mainly A1_2O_3 and MnS along the grain boundaries or ingrains, which played an important role in the mechanical properties of the hot strips of low carbonsteel produced by csp (compact strip production) technology.

关键词： csp microstructure refinement precipitation mechanical property

Study on temper-rapid cooling process of low carbon steel produced by csp

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Journal of University of Science and Technology Beijing 2007年第4期14卷 312-316页

作者： Huajie Wu Yangchun Liu Jie Fu Metallurgical and Ecological Engineering School University of Science and Technology Beijing Beijing 100083 China

On the basis of the effect of carbon precipitation on the microstructure and properties of steel products below At temperature, a new thermal treatment method （temper-rapid cooling process） was studied. By the temper-rapid cooling process, the yield strengths of the high strength low carbon （HSLC） steel ZJ330 and SPA-H produced using the compact strip production （csp） process increased from 340 to about 410 MPa and from 410 to about 450 MPa, respectively. The results indirectly indicated that there existed nanoscaled iron-carbon precipitates that have obvious precipitation effect on low carbon steel produced by csp. The prospect of application is discussed.

关键词： temper-rapid cooling HSLC steel yield strength csp

Denote csp with Temporal Formulas

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Journal of Computer Science & Technology 1990年第1期5卷 17-23页

作者：周巢尘柳欣欣 Institute of Software Academia Sinica

This is a sequel of [1] to give a temporal semantics to a full version of csp, including hiding operator and nested parallelism. The semantic definition is of denotational style, and employs set of temporal formulas as denotations. The continuity is proved, when the hiding operator is restricted to channels only with finite possible messages.

关键词： csp In

Research and Application of Flat Roll Technology in the Downstream Stands for csp

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Journal of Iron and Steel Research(International) 2011年第4期18卷 30-35页

作者： GUO De-fu HE An-rui SHAO Jian YANG Quan WANG Zhong-ming WANG bo National Engineering Research Center of Advanced Rolling University of Science and Technology Beijing Beijing 100083 China Hot Strip Plant of Ma'anshan Iron and Steel Co Ltd Ma'anshan 243000 Anhui China

CVC mills are generally used in the whole stands of csp（Compact Strip Product）.Their special ＂s＂ curve of work roll contour and shifting strategy aimed at controlling strip shape,and the characteristics of continuous casting and rolling production,which make the work roll wear in downstream stands seriously uneven,and easily form abnormal transverse profile at the rolling *** a result,CVC mill configuration in the downstream stands can not meet the profile and flatness control requirement for schedule free rolling,and bring some difficulties in profile and flatness control for the subsequent cold *** on the characteristics of the shape control system of csp production line,and combined with the theory of flat roll technology,a kind of technology solution of using flat roll in the downsteam stands for csp hot strip mills was *** last,industrial test was carried out in the last stand of Masteel csp,and good results were obtained.

关键词： csp flat roll wear shifting strategy profile flatness