武警学院学报
武警學院學報
무경학원학보
JOURNAL OF THE CHINESE PEOPLE'S ARMED POLICE FORCE ACADEMY
2012年
8期
89-91
,共3页
一次短路熔珠%金相组织%冷却条件%铜导线
一次短路鎔珠%金相組織%冷卻條件%銅導線
일차단로용주%금상조직%냉각조건%동도선
primary short circuited beads%microstructure%cooling condition%copper lead
为考查加热时间对铜导线一次短路熔珠金相显微组织的影响,实验模拟室内火灾环境,在500℃下对熔珠加热不同时间后进行自然和喷水冷却,通过观察自然和喷水冷却熔珠的金相组织,研究加热时间对一次短路熔珠金相组织的影响。得出一次短路熔珠金相组织随加热时间的变化规律,为火场中铜导线一次短路熔珠的鉴定提供依据。
為攷查加熱時間對銅導線一次短路鎔珠金相顯微組織的影響,實驗模擬室內火災環境,在500℃下對鎔珠加熱不同時間後進行自然和噴水冷卻,通過觀察自然和噴水冷卻鎔珠的金相組織,研究加熱時間對一次短路鎔珠金相組織的影響。得齣一次短路鎔珠金相組織隨加熱時間的變化規律,為火場中銅導線一次短路鎔珠的鑒定提供依據。
위고사가열시간대동도선일차단로용주금상현미조직적영향,실험모의실내화재배경,재500℃하대용주가열불동시간후진행자연화분수냉각,통과관찰자연화분수냉각용주적금상조직,연구가열시간대일차단로용주금상조직적영향。득출일차단로용주금상조직수가열시간적변화규률,위화장중동도선일차단로용주적감정제공의거。
In this experiment,simulating real fire scene,primary short circuited melted beads of different diameter were made by trace evidence test-bed system.In addition to this,simulating indoor fire thermal environment by box-type resistance furnace,beads heated at 500℃ for different time were made.Contrasting the beads formatted under natural cooling condition and water cooling condition,the result shows that different cooling condition has a great impact on the microstructure of primary short circuited beads.Based on the microstructure analysis of primary short circuited beads formatted under different cooling conditions,the changing regularity of the different microstructure of primary short circuited beads with different cooling conditions is drawn.
