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真空熔煉爐常見的故障及處理方式
發布時間:2023-01-29   瀏覽:8525次

  真(zhen)空(kong)熔煉(lian)爐常見的故(gu)障(zhang)及處理方式

  真空熔煉爐在使用長(chang)時間后會出現一些(xie)故障,這是在所難免(mian)的。今天八(ba)佳小編(bian)就和大家說(shuo)說(shuo)當故障出現,要做哪些(xie)處理方(fang)法。

  1、故(gu)障現象:真(zhen)空熔煉爐運行正常,但在正常過流保(bao)護動作(zuo)時燒毀(hui)較多的是KP晶閘管和快熔。

  分析處理(li):過(guo)流(liu)保護時(shi)為了(le)向電(dian)(dian)網釋(shi)放平波電(dian)(dian)抗器的(de)能量(liang),整流(liu)橋由整流(liu)狀(zhuang)態(tai)轉到逆變(bian)狀(zhuang)態(tai),這時(shi)如果(guo)α>120度(du);,就有(you)可能造成(cheng)有(you)源(yuan)逆變(bian)顛覆(fu),燒毀多只晶閘管和快熔,開關跳伴(ban)隨有(you)巨大的(de)電(dian)(dian)流(liu)短路爆(bao)炸聲,對變(bian)壓(ya)器產生較大的(de)電(dian)(dian)流(liu)和電(dian)(dian)磁力(li)沖擊,嚴重時(shi)會損壞變(bian)亞(ya)器。

真空甩帶爐

  2、故(gu)障現象:真空熔煉爐運行正常(chang),但(dan)在(zai)高(gao)電壓區內某(mou)點(dian)附近(jin)設(she)備(bei)工作不穩定,直流電壓表晃動,設(she)備(bei)伴(ban)隨有吱(zhi)吱(zhi)的聲音,這種情況極容(rong)易造成逆變(bian)橋顛(dian)覆燒毀晶閘管(guan)。

  分析處理(li):這(zhe)種(zhong)故(gu)障(zhang)較(jiao)難排除,多發生于設(she)備的某部(bu)件高(gao)壓打火:

  (1)真空(kong)熔煉爐的連接銅排接頭螺絲松動造成打火

  (2)斷路器主接(jie)頭氧化導致打火;

  (3)補償(chang)電(dian)容接線樁螺絲松(song)動,引起打火(huo),補償(chang)電(dian)容內部放電(dian)阻(zu)容吸收電(dian)打火(huo);

  (4)水冷(leng)散熱(re)器絕(jue)緣部分太臟或(huo)炭(tan)化對地打火;

  (5)真(zhen)空熔煉爐爐體(ti)感應(ying)線(xian)圈對爐殼/爐底(di)板打火(huo),爐體(ti)感應(ying)線(xian)圈匝間距太近,匝間打火(huo)或起(qi)弧。固定爐體(ti)感應(ying)線(xian)圈的(de)絕(jue)緣柱(zhu)因(yin)高溫(wen)炭化放(fang)電打火(huo)

  (6)晶閘管內部打(da)火。

  以(yi)上就是真空熔煉爐廠家(jia)分(fen)析的(de)兩(liang)種常見的(de)故障。大家(jia)明白(bai)了嗎?如果還有不明白(bai),也可(ke)以(yi)打電話咨詢。


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