CAJ | 학술논문

总结了两年多来中国石化炉管质量检测检验与评估中心对乙烯裂解炉管抽样检测的状况。对国产乙烯裂解炉141根离心铸造炉管、24根炉管焊接件以及27根静态铸造管件开展了化学成分、室温拉伸性能、高温持久性能试验和低倍组织酸蚀试验，给出了当前国产离心铸造炉管行业对杂质元素含量的控制情况、国产离心铸造炉管和静态铸造管件的室温拉伸性能与高温持久寿命状况，以及柱状晶与等轴晶比例。结果表明，当前国产乙烯裂解炉管合格率在80％～90％左右，炉管焊接件和静态铸造管件的高温持久寿命基本不合格，凸显出了国产乙烯裂解炉管行业存在的严峻问题。还就离心铸造炉管和管件杂质元素、新制造炉管性能与服役炉管失效模式的关系等问题开展了讨论。
총결료량년다래중국석화로관질량검측검험여평고중심대을희렬해로관추양검측적상황。대국산을희렬해로141근리심주조로관、24근로관한접건이급27근정태주조관건개전료화학성분、실온랍신성능、고온지구성능시험화저배조직산식시험，급출료당전국산리심주조로관행업대잡질원소함량적공제정황、국산리심주조로관화정태주조관건적실온랍신성능여고온지구수명상황，이급주상정여등축정비례。결과표명，당전국산을희렬해로관합격솔재80％～90％좌우，로관한접건화정태주조관건적고온지구수명기본불합격，철현출료국산을희렬해로관행업존재적엄준문제。환취리심주조로관화관건잡질원소、신제조로관성능여복역로관실효모식적관계등문제개전료토론。
Sampling test status of ethylene pyrolysis furnace tubes is summed up by Sinopec Inspection and Assessment Center on Furnace Tube (SIACFT) in recent two years.Chemical composition test,ten-sile test at room temperature and high -temperature stress rupture test of furnace tubes and fittings was carried out respectively on 141 pieces of centrifugal casting furnace tubes ,24 pieces of welding joints and 27 pieces of static casting fittings .The status of impurity value in furnace tube industry ,tensile properties at room temperature and high -temperature stress rupture life of furnace tubes and fittings are summa-rized.The results revealed a serious situation of furnace tube industry that 80%~90%centrifugal casting furnace tubes are qualified ,while all of the welding joints and static casting fittings are unqualified .Impu-rity control,the relationship between newly manufactured furnace tubes and fittings performance and serv-iced furnace tube failure mode are also discussed .