爐門框架采用槽鋼(gang)(gang)制作(zuo),側板和(he)底板采用Q235鋼(gang)(gang)板焊接(jie),結(jie)構牢(lao)固可靠,不易變(bian)形(xing)和(he)翹(qiao)曲(qu),整體強度(du)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(xi)統:主控(kong)(kong)系(xi)統控(kong)(kong)制(zhi)(zhi)柜(ju)采用國際流行立式組合(he)柜(ju)。控(kong)(kong)制(zhi)(zhi)柜(ju)外表(biao)噴涂電腦色(se)或淺駝色(se)。電控(kong)(kong)面板上裝有電流表(biao)、電壓(ya)表(biao)、溫度控(kong)(kong)制(zhi)(zhi)儀及控(kong)(kong)制(zhi)(zhi)開(kai)關等(deng)。
溫度控(kong)制(zhi)主回路(lu)采用可控(kong)硅過零調功(gong)(gong)(gong)觸發,可控(kong)硅采用風冷形式,設有過載、過熱(re)及過流(liu)保護(hu)等功(gong)(gong)(gong)能(neng)。溫度控(kong)制(zhi)儀(yi)表選用先(xian)進的(de)上海國龍(long)智能(neng)高精(jing)度數顯PID自整定型儀(yi)表,控(kong)制(zhi)精(jing)度±1℃。該溫度控(kong)制(zhi)配有熱(re)電(dian)偶修正功(gong)(gong)(gong)能(neng)、功(gong)(gong)(gong)率限制(zhi)功(gong)(gong)(gong)能(neng)及超溫報警功(gong)(gong)(gong)能(neng)。當爐門打開(kai)時自動(dong)切斷加熱(re)主電(dian)路(lu),實現聯鎖保護(hu)。
爐溫(wen)記(ji)錄采(cai)用南(nan)通達華記(ji)錄儀,對(dui)升(sheng)溫(wen)及保(bao)溫(wen)時間過程實時打印曲線、記(ji)錄溫(wen)度,同時對(dui)加熱主回(hui)路實現(xian)監(jian)(jian)控作用,有效地監(jian)(jian)視整個生產(chan)工(gong)藝。