刚玉-尖晶石浇注料抗热震性不同检测方法的比较与评估
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摘要
以某大型钢包用的三种配方的刚玉-尖晶石浇注料为研究对象,分别采用目前耐火材料行业常用的三种抗热震性检测方法——水急冷法、残余抗折强度法和临界温差法测试了其抗热震性,并对所得结果的一致性、相关性和实用性进行了对比分析。结果表明:对刚玉-尖晶石浇注料来说,三种检测方法所得结果具有一致性和相关性;水急冷法的结果最不稳定,残余抗折强度法的成本最低,临界温差法是最实用的检测方法。综合考虑认为,临界温差法最适合检测刚玉-尖晶石浇注料的抗热震性,但应根据实际使用条件选择起始试验温度,并采用无损检测的方法。
This work took three types of corundum-spinel castables used in one large-scaled steel ladle as studying objects. The thermal shock resistance of the three objects was researched using water quenching method,residual modulus of rupture method and critical temperature difference method,respectively,and the consistency,the correlation and practicability of the test results were analyzed. For corundum-spinel castables,the results obtained from the three test methods are consistent and relevant. Water quenching method has the most unstable results,residual modulus of rupture method has the lowest cost,and the critical temperature difference method is the most practical. Considering all factors,the critical temperature difference method is most suitable for testing thermal shock resistance of corundum-spinel castables,the starting temperature shall be selected according to actual service conditions,and nondestructive examination method shall be adopted.
This work took three types of corundum-spinel castables used in one large-scaled steel ladle as studying objects. The thermal shock resistance of the three objects was researched using water quenching method,residual modulus of rupture method and critical temperature difference method,respectively,and the consistency,the correlation and practicability of the test results were analyzed. For corundum-spinel castables,the results obtained from the three test methods are consistent and relevant. Water quenching method has the most unstable results,residual modulus of rupture method has the lowest cost,and the critical temperature difference method is the most practical. Considering all factors,the critical temperature difference method is most suitable for testing thermal shock resistance of corundum-spinel castables,the starting temperature shall be selected according to actual service conditions,and nondestructive examination method shall be adopted.
引文
[1]赵维平.耐火材料抗热震性试验方法探讨[J].耐火材料,2013,47(6):476-480.
[2]范志辉,石干.窑具抗热震性评价方法的研究[J].耐火材料,2006,40(1):56-59.
[3]刘辉敏.基于有限单元法评价长水口的抗热震性能[J].耐火材料,2015,49(3):186-189.
[4]李伟,童则明,李彦明,等.滑板材料的抗热震性评价[J].耐火材料,2013,47(3):215-217.
[5]于建宾,刘国齐,杨文刚,等.镁碳材料抗热震性测试评价方法[J].材料工程,2010,38(增刊2):402-405.
[6]刘新,曲殿利,李志坚.矿物组成对评价Al2O3-Si O2系耐火制品抗热震性的影响[J].耐火材料,2014,48(增刊1):24-26.
[7]王冬冬,张立明.刚玉骨料种类与粒度对刚玉-莫来石材料抗热震性的影响[J].耐火材料,2009,43(6):428-432.
[8]赵瑞霞,李纪伟,毕振勇,等.再生铬刚玉骨料对刚玉-尖晶石浇注料性能及显微结构的影响[J].耐火材料,2018,52(5):342-346.
[9]李楠,顾华志,赵惠忠.耐火材料学[M].北京:冶金工业出版社,2010:45-48.
[10]黄少平,李丰,王澎,等.一种高低温热震抗折试验仪:CN204789174U[P]. 2015-11-18.
[11]丁达飞,李志坚,陈俊红,等.超声波脉冲速度法研究镁铁铝材料的抗热震性[J].耐火材料,2015,49(5):349-351.
[12] POSARAC M,DIMITRIJEVIC M,VOLKOV-HUSOVIC T,et al.The ultrasonic and image analysis method for non-destructive quantification of the thermal shock damage in refractory specimens[J].Materials and Design,2009,30(8):3338-3343.
[13]于景坤,姜茂发.耐火材料性能测定与评价[M].北京:冶金工业出版社,2001:64-65.
[2]范志辉,石干.窑具抗热震性评价方法的研究[J].耐火材料,2006,40(1):56-59.
[3]刘辉敏.基于有限单元法评价长水口的抗热震性能[J].耐火材料,2015,49(3):186-189.
[4]李伟,童则明,李彦明,等.滑板材料的抗热震性评价[J].耐火材料,2013,47(3):215-217.
[5]于建宾,刘国齐,杨文刚,等.镁碳材料抗热震性测试评价方法[J].材料工程,2010,38(增刊2):402-405.
[6]刘新,曲殿利,李志坚.矿物组成对评价Al2O3-Si O2系耐火制品抗热震性的影响[J].耐火材料,2014,48(增刊1):24-26.
[7]王冬冬,张立明.刚玉骨料种类与粒度对刚玉-莫来石材料抗热震性的影响[J].耐火材料,2009,43(6):428-432.
[8]赵瑞霞,李纪伟,毕振勇,等.再生铬刚玉骨料对刚玉-尖晶石浇注料性能及显微结构的影响[J].耐火材料,2018,52(5):342-346.
[9]李楠,顾华志,赵惠忠.耐火材料学[M].北京:冶金工业出版社,2010:45-48.
[10]黄少平,李丰,王澎,等.一种高低温热震抗折试验仪:CN204789174U[P]. 2015-11-18.
[11]丁达飞,李志坚,陈俊红,等.超声波脉冲速度法研究镁铁铝材料的抗热震性[J].耐火材料,2015,49(5):349-351.
[12] POSARAC M,DIMITRIJEVIC M,VOLKOV-HUSOVIC T,et al.The ultrasonic and image analysis method for non-destructive quantification of the thermal shock damage in refractory specimens[J].Materials and Design,2009,30(8):3338-3343.
[13]于景坤,姜茂发.耐火材料性能测定与评价[M].北京:冶金工业出版社,2001:64-65.