爐門框架采(cai)用(yong)槽鋼制作(zuo),側板和底板采(cai)用(yong)Q235鋼板焊接,結構牢固可靠,不易(yi)變形和翹(qiao)曲,整體強度好。
爐門升降為電動葫蘆驅動。箱式預熱爐廠家在爐門上有一斷路裝置,該裝置與輪軸連鎖,當爐門打開時即切斷加熱元件電源以保證操作人員安全。爐門上裝有調節式密封機構,有效使爐門密封。在爐頂上有一熱電偶孔,在使用時將熱電偶插入爐膛通過電爐控制柜來控制爐膛工作溫度。
控(kong)(kong)制(zhi)(zhi)系統:主控(kong)(kong)系統控(kong)(kong)制(zhi)(zhi)柜采用國際流行立式組合柜。控(kong)(kong)制(zhi)(zhi)柜外表噴涂電腦色(se)或淺駝色(se)。電控(kong)(kong)面板上裝有電流表、電壓表、溫度(du)控(kong)(kong)制(zhi)(zhi)儀及控(kong)(kong)制(zhi)(zhi)開關等。
溫度控(kong)(kong)制(zhi)(zhi)主回路(lu)采用(yong)可(ke)控(kong)(kong)硅過零調功(gong)(gong)觸發,可(ke)控(kong)(kong)硅采用(yong)風冷形式(shi),設有過載、過熱及過流(liu)保(bao)護等(deng)功(gong)(gong)能(neng)。溫度控(kong)(kong)制(zhi)(zhi)儀表選用(yong)先(xian)進的上海國龍智能(neng)高精(jing)度數顯PID自整定型(xing)儀表,控(kong)(kong)制(zhi)(zhi)精(jing)度±1℃。該(gai)溫度控(kong)(kong)制(zhi)(zhi)配(pei)有熱電偶(ou)修正功(gong)(gong)能(neng)、功(gong)(gong)率限制(zhi)(zhi)功(gong)(gong)能(neng)及超溫報(bao)警功(gong)(gong)能(neng)。當爐門打開時自動切斷(duan)加熱主電路(lu),實現聯鎖保(bao)護。
爐溫記錄(lu)采(cai)用(yong)南通達華記錄(lu)儀(yi),對升溫及保溫時間(jian)過(guo)程實時打(da)印(yin)曲線(xian)、記錄(lu)溫度,同時對加熱主回路實現(xian)監控作(zuo)用(yong),有(you)效(xiao)地(di)監視整(zheng)個生產工(gong)藝(yi)。