Dissertation > Industrial Technology > Metallurgy and Metal Craft > Casting > Foundry machinery and equipment > Melting equipment > Cupola

Solve the hanging iron cupola

Author LiuQingLin
Tutor LiMingZhu;GanWen
School Shanghai Jiaotong University
Course Mechanical Engineering
Keywords Cupola hanging iron Filtering Orthogonal test Programmable controller Configuration software
CLC TG232.1
Type Master's thesis
Year 2009
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China foundry industry in order to raise the temperature of molten iron and casting quality , large-scale use long big row from the double blast cupola furnace cold , but because of the long water-cooled furnace reasons, the production process is often accompanied by a furnace wall slag, hanging the phenomenon of iron with a capacity of less than the rated capacity , will lead to serious halfway dead furnace , can not be produced . I use two 12 t / h of water long the furnace cold wind big row from the double - blast cupola above problems exist , a great impact on production , thus solving the problem of the furnace wall iron without delay . The research is in the original production equipment and production process on the basis of the main work includes two aspects: on the one hand , the actual production , sampling , control , human-machine interface microcomputer hardware and software required for the analysis and transformation , the cupola run control and monitoring computer system architecture , the use of PLC as a data acquisition and digital control under the crew , IPC as a host computer to monitor the running of the cupola . On the other hand through a large number of experiments , the control parameters of the cupola is running and operating procedures were analyzed , and sets out a control cupola hanging iron control measures and process parameters , form stereotyping open furnace process . Basically solved the cupola hanging iron , to ensure the smooth progress of production , a lot of saving costs , ensure product quality , ensure safety , and laid the foundation for the completion of the company's production and operation targets . The main work of the research are: analysis of the cupola linked to the formation of iron causes and specific control methods ; design the program to solve the problem of hanging steel ; mathematical analysis method of the running of the cupola , on this basis on the re-enactment the cupola operation of process parameters and operating procedures ; sampling and control system hardware and software has been improved ; redesigned the monitoring software and man-machine interface ; process parameters and operating procedures of the large number of experiments and gradually revised and improved. Research projects cupola run more than 80 hours , the percentage of rated operating capacity increased from 50% to more than 85% , the weight of the hanging steel from 4 tons / furnace down to 1 ton / furnace .

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