對(dui)真(zhen)空(kong)(kong)(kong)爐(lu)(lu)進行(xing)維(wei)修后，要進行(xing)烘爐(lu)(lu)、必須對(dui)真(zhen)空(kong)(kong)(kong)爐(lu)(lu)進行(xing)真(zhen)空(kong)(kong)(kong)檢(jian)漏。真(zhen)空(kong)(kong)(kong)爐(lu)(lu)烘爐(lu)(lu)前(qian)，可用(yong)1000V搖表檢(jian)測(ce)真(zhen)空(kong)(kong)(kong)爐(lu)(lu)的絕緣，正常不小于2MΩ。真(zhen)空(kong)(kong)(kong)爐(lu)(lu)烘爐(lu)(lu)分三(san)個階段：

　　①水分排出期O～200℃，是真空爐保溫層(ceng)中(zhong)的(de)水分和(he)真空爐體中(zhong)潮氣的(de)排出期，必須檢查(cha)真空爐真空度，同(tong)時保溫時間較(jiao)長(chang)。

　　②真空爐體放氣量(liang)(liang)大的溫度區(qu)一(yi)般(ban)(ban)在(zai)500℃左右，因(yin)真空爐放氣量(liang)(liang)比較大，這時升(sheng)溫不超過(guo)50℃/h。保溫時間一(yi)般(ban)(ban)在(zai)60分鐘以上

　　③保(bao)溫(wen)期1200℃左右，加熱每升高100～200℃，要進行(xing)保(bao)溫(wen)一段時間(jian)，升溫(wen)過(guo)快(kuai)易損壞保(bao)溫(wen)層、真空爐(lu)放氣不(bu)完全(quan)。

　　(1)編制(zhi)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)使(shi)用維(wei)(wei)護(hu)操作規程，建(jian)立真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)運(yun)行記(ji)錄和修(xiu)(xiu)理(li)檔(dang)案，統(tong)(tong)計運(yun)行累積工(gong)(gong)作時(shi)間(jian)，加(jia)強真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)日常維(wei)(wei)護(hu)，掌(zhang)握(wo)設備(bei)(bei)技(ji)術(shu)狀(zhuang)態(tai)變化(hua)趨(qu)勢，及早發(fa)現故障損壞苗頭，避免屬于(yu)事(shi)故搶修(xiu)(xiu)性(xing)質的(de)維(wei)(wei)修(xiu)(xiu)，并根據真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)工(gong)(gong)作負荷和運(yun)行狀(zhuang)況，提前有(you)針對性(xing)地準備(bei)(bei)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)修(xiu)(xiu)理(li)用零部件，編制(zhi)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)運(yun)行維(wei)(wei)護(hu)方(fang)案。如(ru)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)加(jia)熱元(yuan)件的(de)使(shi)用壽(shou)命長(chang)短與(yu)工(gong)(gong)作溫度、真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)內(nei)產品介質、產品數量(liang)及操作情(qing)(qing)況等(deng)許多(duo)(duo)因素有(you)關(guan)，在(zai)(zai)每(mei)天24小時(shi)加(jia)工(gong)(gong)生(sheng)產的(de)情(qing)(qing)況下，真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)加(jia)熱元(yuan)件和隔熱屏(ping)的(de)更換大約每(mei)兩三(san)年進行一(yi)次(ci)(ci).這取決于(yu)釬焊(han)工(gong)(gong)作的(de)類(lei)型(xing)和使(shi)用次(ci)(ci)數。真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)一(yi)般在(zai)(zai)春秋季節泄漏(lou)(lou)(lou)故障較(jiao)(jiao)多(duo)(duo)，長(chang)期閑(xian)置的(de)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)在(zai)(zai)才次(ci)(ci)使(shi)用時(shi)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)泄漏(lou)(lou)(lou)故障比較(jiao)(jiao)易(yi)發(fa)生(sheng)。這時(shi)間(jian)就必須(xu)進行真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)檢(jian)(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)，真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)檢(jian)(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)一(yi)般采取每(mei)月一(yi)次(ci)(ci)測壓升(sheng)率(lv)(在(zai)(zai)常溫下，關(guan)閉所有(you)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)閥(fa)，停(ting)止真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)系(xi)統(tong)(tong)運(yun)轉(zhuan)，1Omin后(hou)(hou)讀(du)一(yi)個(ge)數，1h后(hou)(hou)再(zai)讀(du)一(yi)個(ge)數，兩數之差是壓升(sheng)率(lv)的(de)數值(zhi))，掌(zhang)握(wo)設備(bei)(bei)泄漏(lou)(lou)(lou)變化(hua)趨(qu)勢，如(ru)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)設備(bei)(bei)連續(xu)停(ting)機(ji)一(yi)個(ge)禮拜(bai)，要空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)運(yun)轉(zhuan)一(yi)次(ci)(ci)(進行烘爐(lu)(lu)(lu))。 在(zai)(zai)真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)系(xi)統(tong)(tong)檢(jian)(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)時(shi)，除臨時(shi)應急維(wei)(wei)修(xiu)(xiu)用真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)泥糊(hu)堵外，有(you)氦(hai)質譜檢(jian)(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)儀(yi)可(ke)用氦(hai)質譜檢(jian)(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)儀(yi)進行真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)檢(jian)(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)，如(ru)沒氦(hai)質譜檢(jian)(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)儀(yi)可(ke)用醫用針管(guan)吸(xi)丙酮或乙醚射到所懷疑的(de)漏(lou)(lou)(lou)點處，觀察真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)表讀(du)數有(you)無變化(hua)。也可(ke)制(zhi)作留有(you)插真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)硅(gui)管(guan)孔的(de)盲板(ban)，分段封(feng)堵真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)管(guan)路，進行檢(jian)(jian)(jian)(jian)(jian)漏(lou)(lou)(lou)。找(zhao)到漏(lou)(lou)(lou)點以后(hou)(hou)進行維(wei)(wei)修(xiu)(xiu)(一(yi)般密封(feng)圈(quan)老化(hua)比較(jiao)(jiao)多(duo)(duo))，定時(shi)檢(jian)(jian)(jian)(jian)(jian)查真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)爐(lu)(lu)(lu)的(de)滑閥(fa)泵(beng)(beng)、羅茨泵(beng)(beng)、維(wei)(wei)持泵(beng)(beng)、擴(kuo)散泵(beng)(beng)油(you)，如(ru)發(fa)現油(you)遇水乳化(hua)，真(zhen)(zhen)(zhen)(zhen)(zhen)(zhen)空(kong)(kong)(kong)(kong)(kong)(kong)(kong)(kong)下跌，必須(xu)更換上面4個(ge)泵(beng)(beng)油(you)，應每(mei)周檢(jian)(jian)(jian)(jian)(jian)查一(yi)次(ci)(ci)油(you)位(wei)和油(you)的(de)質量(liang)。擴(kuo)散泵(beng)(beng)油(you)油(you)擴(kuo)散泵(beng)(beng)有(you)積炭可(ke)用化(hua)學酸洗(xi)的(de)方(fang)法清洗(xi)。

　　(2)真(zhen)空(kong)(kong)(kong)爐(lu)維修(xiu)好后(hou)的使(shi)用初期要經(jing)常(chang)進行檢查，檢查使(shi)用后(hou)的真(zhen)空(kong)(kong)(kong)爐(lu)表溫(wen)度(du)和爐(lu)子實際溫(wen)度(du)是否(fou)一(yi)致(定期進行真(zhen)空(kong)(kong)(kong)計(ji)、溫(wen)控儀(yi)、熱電偶、電壓表、電流表的檢定、校準(zhun)工(gong)作)，檢查三(san)相加熱體是否(fou)存在過熱損傷情況、溫(wen)度(du)不均或發白等現象。對(dui)于三(san)相高溫(wen)真(zhen)空(kong)(kong)(kong)爐(lu)，以及真(zhen)空(kong)(kong)(kong)電阻爐(lu)容量超過100kW時(shi)，每相、每一(yi)個加熱區都應安裝有電流表，發現真(zhen)空(kong)(kong)(kong)爐(lu)溫(wen)與(yu)儀(yi)表指示不正(zheng)常(chang)，及時(shi)分析處理。