氧乙醇汽油火焰温度计算与切割工艺试验研究  

Calculating the temperature of oxygen ethanol gasoline flame and analysis of cutting test

作　　者：于娇[1] 胡传顺[1] 李宪臣[1] 蒋应田[1] 李吉承[1] 陈强[1] 

机构地区：[1]辽宁石油化工大学机械工程学院,辽宁抚顺113001

出　　处：《电焊机》2010年第3期40-42,55,共4页Electric Welding Machine

基　　金：辽宁省教育厅科学技术研究资助项目(20060503);抚顺市科学技术计划资助项目(20091202)

摘　　要：为了在理论上验证乙醇汽油作为切割替代燃料的可行性,在此根据热力学理论计算了当乙醇的体积浓度为10%和50%时乙醇汽油中性焰和氧化焰的理论温度,分析了绝对氧化焰、氧化焰和中性焰的火焰长度。计算结果表明:氧乙醇汽油的火焰温度都在2 234.94℃以上,中性焰的外焰长度大约是氧乙炔中性焰的3.6～5.2倍,因此火焰能够深入割缝内部,保证熔渣具有足够的温度和流动性,并且火焰温度能够达到2 000℃以上,表明氧乙醇汽油可以作为切割替代燃料。在切割试验中验证了氧乙醇汽油火焰切割的切割性能,切割处的金属不易被氧化,切割后切口表面光滑平整,挂渣非常少且容易清除,棱角完好。In order to show the feasibility of ethanol gasoline to be a alternative cutting fuel,the theoretical temperature of oxygen ethanol gasoline of neutral flame and oxidizing flame is calculated when the volume concentration of ethanol is 10% and 50% respectively according to thermodynamic theory,the length of flame of absolute oxidizing flame,oxidizing flame and neutral flame is analyzed.The computed result indicate：the temperature of oxygen ethanol gasoline is above 2 234.94 ℃ ,the outer flame of neutral flame is approximately 3.6-5.2 times length of oxygen ethanol,so the flame can penetrate the kerf internal,this can ensure sufficient temperature and the liquidity and the temperature of flame is above 2 000 ℃, so it can be a alternative cutting fuel.In the flame cutting test,the cutting process of oxygen ethanol gasoline is carried out,the place of cutting metal is not Oxidized easily,the surface of the kerf is smooth after cutting, hanging slag are very small and easy to be removed, edges are intact.

关 键 词：氧乙醇汽油 火焰理论温度 火焰长度 乙醇汽油燃烧性能 切割质量 

分 类 号：TG446.2[金属学及工艺—焊接]