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Process for improving the ladle free- opening rate for high aluminum steel in continuous casting 被引量:3
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作者 LIU Junzhan ZHOU Tongjun LUO Hui 《Baosteel Technical Research》 CAS 2015年第1期42-45,共4页
Steel 20Mn23AlV is a type of high aluminum steel with a very low ladle free-opening rate. The aluminum composition of 20Mn23AlV ranges from 1.6% to 2.45% ,which is significantly higher than other types of steel. Accor... Steel 20Mn23AlV is a type of high aluminum steel with a very low ladle free-opening rate. The aluminum composition of 20Mn23AlV ranges from 1.6% to 2.45% ,which is significantly higher than other types of steel. According to the real condition of 40 t ladle in steel-making plant of Baosteel Special Steel Company, previous works show that the key factors affecting the ladle free-opening rate of high aluminum steel in continuous casting are:sand material, accessories baking, ladle nozzle cleaning, the process and amount of adding sand, and the rate of argon stirring during refining. Therefore, improving the ladle filler sand quality, baking all of the raw materials, controlling the addition of ladle filler sand, cleaning the ladle nozzle, and optimizing argon stirring during the refining process can resolve the problem of a low ladle free-opening rate of high aluminum steel caused by the long ladle time of liquid steel. 展开更多
关键词 continuous casting high aluminum steel LADLE free - opening rate
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改进排水子结构法求解地下厂房洞室群区的复杂渗流场 被引量:58
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作者 朱岳明 陈振雷 +2 位作者 吴愔 陈晴 徐爱忠 《水利学报》 EI CSCD 北大核心 1996年第9期79-85,共7页
本文论述了用改进排水子结构法精细地求解地下厂房区复杂渗流场的方法,突出地介绍了对厂房、排水廊道及排水孔等孔洞内边界上渗流状态的数学模拟方法最后以大朝山水电站工程为例对渗流场进行了求解.
关键词 渗流场 排水孔 自由面 排水子结构 地下厂房
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Proposal for Design and Application of Business Intelligence as a Decision Support System to the Editorial Sector of Distance Education (DE)
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作者 Walther Azzolini Junior 《Management Studies》 2016年第2期60-79,共20页
In recent years, industrial and service organizations have invested in improvement projects with emphasis on increasing the performance of processes regarding to the production of manufactured goods and services, appl... In recent years, industrial and service organizations have invested in improvement projects with emphasis on increasing the performance of processes regarding to the production of manufactured goods and services, applying techniques to optimize production time in order to minimize the restrictive effects of the funds invested in processing or obtaining processes in order to reduce the losses of general scope. This paper discusses the impact of the innovation in making use of business intelligence (BI) concepts about production records of a publishing area in a higher education institution (HEI) that promotes distance education (DE) in Brazil, helping the industry in their managements decisions, having a target minimize time on production of learning material through more effective control with the use of cubes in the form of reports for metric queries of delivery delays and metrics on the production tasks financial values, and filtering the processed information so that managers can view information from various angles and managerial perspectives. The objectives of this paper are to demonstrate the impact on using BI concepts in the process of an editorial department of a HEI focusing on the development of teaching materials for the courses of DE and identify the financial cost-benefit ratio for the HEI with the deploying BI in a software fee platform in its publishing department. The sector is responsible by in courseware publishing organizations that usually do not have systems with this emphasis: support on making managerial decisions. 展开更多
关键词 business intelligence data warehouse distance education (DE) free software and open source software open source Pentaho
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