氮的添加介质和工艺及添加量对灰铸铁力学性能的影响
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摘要
研究了灰铸铁中不同含氮的添加介质和工艺对氮元素吸收率的影响及氮元素添加量对其金相组织和力学性能的影响。结果表明:氮化锰为最优的添加介质,而且炉内直接添加最好;在采用炉内直接添加氮化锰的情况下,灰铸铁抗拉强度随着氮含量的增加而提高;当氮含量为0.0126%时,灰铸铁抗拉强度达到最大,其值为360 MPa。
This study investigated the effects of three different kinds of addition media containing nitrogen and two addition processes on nitrogen absorption efficiency, and the effect of nitrogen addition amount on the microstructure and mechanical properties of gray cast iron. The results show that manganese nitride is the optimum addition medium among three kinds of media, and the best addition method is the furnace addition. By means of the method, the tensile strength of the produced gray cast iron sample increased with the increase of nitrogen content, and when the nitrogen content was 0.0126%, the maximum tensile strength was obtained with 360 MPa.
This study investigated the effects of three different kinds of addition media containing nitrogen and two addition processes on nitrogen absorption efficiency, and the effect of nitrogen addition amount on the microstructure and mechanical properties of gray cast iron. The results show that manganese nitride is the optimum addition medium among three kinds of media, and the best addition method is the furnace addition. By means of the method, the tensile strength of the produced gray cast iron sample increased with the increase of nitrogen content, and when the nitrogen content was 0.0126%, the maximum tensile strength was obtained with 360 MPa.
引文
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[2]刘伟,苏勇,王东岭,等.合金元素的配比对缸体性能的影响[J].铸造技术,2008,29(12):1712-1716.
[3]张凤丽,赵学清,吴大春,等.优化发动机缸体缸盖熔炼工艺措施[J].铸造,2014,63(8):856-860.
[4]刘楠楠,卢德宏,刘星舟,等.合金灰铸铁成分与力学性能关系的研究[J].铸造技术,2010,31(4):437-439.
[5]罗刚,罗晓东,刘凯,等.高强度灰铸铁发动机缸体微合金化研制[J].热加工工艺,2013(23):61-64.
[6]王嘉诚,谭自盟,何奥平,等.镍铬对灰铸铁显微组织及性能的影响[J].铸造技术,2018(3):526-529.
[7]陈队志,王昕.锡对灰铸铁组织性能及耐蚀性的影响[J].兰州理工大学学报,2004,30(2):32-35.
[8]杜举团,王世杰,王宁.锡对灰铸铁性能影响的研究[C]//第六届21省(市、自治区)4市铸造学术会议.2004.
[9]王谦谦,孙玉福,靳存文,等.氮对合成灰铸铁组织和性能的影响[J].铸造,2015(6):512-516.
[10]肖丽丽.低成本易切削发动机缸体用灰铸铁材料研究[D].河南:河南科技大学,2012.
[11]肖丽丽,任凤章,李锋军,等.灰铸铁不同合金化同等强度下的加工性能对比研究[J].铸造技术,2012,33(5):512-515.
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[14]翟启杰,胡汉起.氮对灰铸铁基体组织的作用[J].金属学报,1993(5):28-30.
[15]翟启杰,胡汉起.氮对灰铸铁中石墨组织的作用[J].金属学报,1992(10):73-78.
[16]周永寿.氮对提高灰铸铁性能的影响[J].铸造,1997(11):33-36.
[17]Zhai Qijie,Hu Hanqi.Solubility of nitrogen in molten gray cast iron[J].Acta Metallurgica Sinica:English Edition,1992,5(7):71-73.
[18]林勇传,王凯,黄健友,等.石墨形态及金相组织对蠕墨铸铁力学性能的影响[J].铸造技术,2017(11):2582-2585.
[19]金仲信.灰铸铁件裂隙状氮气孔及其防止[J].铸造,2001,50(6):357-359.
[20]王文胜,曹玉亭,刘伟.灰铸铁刹车盘氮气孔的产生原因及防止措施[J].现代铸铁,2010,30(4):67-70.
[2]刘伟,苏勇,王东岭,等.合金元素的配比对缸体性能的影响[J].铸造技术,2008,29(12):1712-1716.
[3]张凤丽,赵学清,吴大春,等.优化发动机缸体缸盖熔炼工艺措施[J].铸造,2014,63(8):856-860.
[4]刘楠楠,卢德宏,刘星舟,等.合金灰铸铁成分与力学性能关系的研究[J].铸造技术,2010,31(4):437-439.
[5]罗刚,罗晓东,刘凯,等.高强度灰铸铁发动机缸体微合金化研制[J].热加工工艺,2013(23):61-64.
[6]王嘉诚,谭自盟,何奥平,等.镍铬对灰铸铁显微组织及性能的影响[J].铸造技术,2018(3):526-529.
[7]陈队志,王昕.锡对灰铸铁组织性能及耐蚀性的影响[J].兰州理工大学学报,2004,30(2):32-35.
[8]杜举团,王世杰,王宁.锡对灰铸铁性能影响的研究[C]//第六届21省(市、自治区)4市铸造学术会议.2004.
[9]王谦谦,孙玉福,靳存文,等.氮对合成灰铸铁组织和性能的影响[J].铸造,2015(6):512-516.
[10]肖丽丽.低成本易切削发动机缸体用灰铸铁材料研究[D].河南:河南科技大学,2012.
[11]肖丽丽,任凤章,李锋军,等.灰铸铁不同合金化同等强度下的加工性能对比研究[J].铸造技术,2012,33(5):512-515.
[12]岡田千里.窒素による鋳鉄の強化とその機構[J].鋳物,1975,47:688-694.
[13]Mountford F A.The influence of nitrogen on the strength,soundness and structure of grey cast iron[J].The British Foundryman,1966:141-151.
[14]翟启杰,胡汉起.氮对灰铸铁基体组织的作用[J].金属学报,1993(5):28-30.
[15]翟启杰,胡汉起.氮对灰铸铁中石墨组织的作用[J].金属学报,1992(10):73-78.
[16]周永寿.氮对提高灰铸铁性能的影响[J].铸造,1997(11):33-36.
[17]Zhai Qijie,Hu Hanqi.Solubility of nitrogen in molten gray cast iron[J].Acta Metallurgica Sinica:English Edition,1992,5(7):71-73.
[18]林勇传,王凯,黄健友,等.石墨形态及金相组织对蠕墨铸铁力学性能的影响[J].铸造技术,2017(11):2582-2585.
[19]金仲信.灰铸铁件裂隙状氮气孔及其防止[J].铸造,2001,50(6):357-359.
[20]王文胜,曹玉亭,刘伟.灰铸铁刹车盘氮气孔的产生原因及防止措施[J].现代铸铁,2010,30(4):67-70.