Study of the Metallographic Quantitative Analysis on Fire Copper Wire

摘要：

The metallographic analysis of the copper wire melted mark formed in the fire to determine a primary short circuited or a secondary short circuited, is directly related to the fires cause of the accident, which is widely used in fire accidents analysis. At present, the common use of metallographic method is only the qualitative analysis. In this paper, the system study of 4 mm2_copper wire on primary short circuited in columnar crystal grain size of the average level is 13.45±0.29 and 9.06±0.49 for the second short circuited, the difference between primary short circuited and secondary short circuited due to low-temperature resume process back to lead resistivity down, and the impact of the temperature gradient on the crystal growth.

关键词： fire copper wire primary short circuited secondary short circuited cylindrical crystal grain-size number

作者: JIN Kaineng

作者单位: Jiangsu General Fire Brigade,Nanjing,Jiangsu 210036

会议类型: 国际会议

会议名称: 2009 International Symposium on Fire Science and Fire-Protection Engineering(2009火灾科学与消防工程国际学术会议)

会议地点: 北京

会议语种:英文

页码: 467-475

在线出版日期: 2009-10-17（万方平台首次上网日期，不代表论文的发表时间）