爐(lu)門(men)框架采用槽鋼制作(zuo),側板和底板采用Q235鋼板焊接(jie),結(jie)構(gou)牢固可靠,不易(yi)變形(xing)和翹曲(qu),整(zheng)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(xi)統(tong):主控(kong)(kong)系(xi)統(tong)控(kong)(kong)制(zhi)(zhi)柜(ju)采用國(guo)際(ji)流行立(li)式組合柜(ju)。控(kong)(kong)制(zhi)(zhi)柜(ju)外表噴涂(tu)電(dian)腦色或淺駝(tuo)色。電(dian)控(kong)(kong)面板上裝有電(dian)流表、電(dian)壓表、溫度(du)控(kong)(kong)制(zhi)(zhi)儀及控(kong)(kong)制(zhi)(zhi)開關等。
溫(wen)度(du)控(kong)制(zhi)主回路采(cai)用可控(kong)硅過零調(diao)功(gong)(gong)觸發,可控(kong)硅采(cai)用風冷形式,設有(you)過載、過熱及(ji)過流保護等功(gong)(gong)能。溫(wen)度(du)控(kong)制(zhi)儀表選用先進的上海國龍智能高精度(du)數顯(xian)PID自整定型(xing)儀表,控(kong)制(zhi)精度(du)±1℃。該溫(wen)度(du)控(kong)制(zhi)配有(you)熱電偶修正功(gong)(gong)能、功(gong)(gong)率限制(zhi)功(gong)(gong)能及(ji)超溫(wen)報(bao)警功(gong)(gong)能。當爐門打開時自動切(qie)斷(duan)加熱主電路,實現聯鎖(suo)保護。
爐溫記(ji)錄(lu)采用南通達華記(ji)錄(lu)儀,對升溫及保溫時間過程實時打印曲(qu)線(xian)、記(ji)錄(lu)溫度,同(tong)時對加熱主回路實現(xian)監(jian)控作用,有效地監(jian)視整個生產(chan)工藝(yi)。