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含氮耐热钢衬板铸造工艺实践
Practice of Casting Technology of Nitrogenous Heat-resistance Steel Liners
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- DOI:
- 作者:
- 刘建宏 张静 柯文武
LIU Jianhong;ZHANG Jing;KE Wenwu
- 作者单位:
- 中钢集团西安重机有限公司
Sinosteel Xi'an Machinery Co.,Ltd.,Xi'an 710201,China
- 关键词:
- 焦罐衬板 耐热钢 含氮钢ZG35Cr24Ni8Si2N
coke hoper liner heat-resistant steel nitrogen steel ZG35Cr24Ni8Si2N
- 摘要:
- 为提高ZG35Cr24Ni8Si2N焦罐衬板的质量和经济性,通过研究焦罐衬板的使用工况和结构特点,制定了针对这种含氮耐热钢的合金成分、熔炼工艺和串铸立浇工艺,并对该薄板零件采取了加“×”防变形筋措施,生产出了尺寸和性能符合要求的产品。还对单铸试样、本体试样分别进行了铸态和退火态的力学性能试验,分析退火处理及N含量对力学性能的影响。结果表明,熔炼时将N含量向下限控制,按照所述工艺浇注,可以铸态交货,保证产品的力学性能,提高出品率和合格率。
In order to improve the quality and economy of ZG35Cr24Ni8Si2N coke pot lining plate,by studying the working conditions and structural characteristics of the coke pot lining plate,the smelting process and the casting process of series vertical casting for the control alloy composition of the nitrogenous heat-resistant steel were developed,and the measures of adding“×”anti-deformation bars to the thin plate parts were taken,the size and performance of products could meet the requirements.The effects of annealing treatment and N content on the mechanical properties of single cast and bulk specimens were analyzed.The results show that the mechanical properties of the product can be guaranteed and the yield and pass rate can be improved by controlling the N content to the lower limit,pouring according to the described process and delivering the product as cast.