爐門(men)框(kuang)架采(cai)(cai)用槽鋼制作,側板(ban)(ban)和底板(ban)(ban)采(cai)(cai)用Q235鋼板(ban)(ban)焊(han)接(jie),結構牢固可靠,不易變形(xing)和翹曲,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(tong):主控(kong)(kong)系統(tong)控(kong)(kong)制(zhi)(zhi)柜采用國際流(liu)行(xing)立式組(zu)合柜。控(kong)(kong)制(zhi)(zhi)柜外表噴涂電(dian)腦(nao)色(se)或淺駝色(se)。電(dian)控(kong)(kong)面板上裝有(you)電(dian)流(liu)表、電(dian)壓表、溫度控(kong)(kong)制(zhi)(zhi)儀(yi)及控(kong)(kong)制(zhi)(zhi)開關等。
溫度(du)控(kong)制(zhi)主(zhu)(zhu)回路采用(yong)(yong)可控(kong)硅過(guo)(guo)零調功觸發(fa),可控(kong)硅采用(yong)(yong)風(feng)冷形式,設有(you)(you)過(guo)(guo)載、過(guo)(guo)熱及(ji)過(guo)(guo)流保(bao)護等功能(neng)(neng)。溫度(du)控(kong)制(zhi)儀(yi)表選用(yong)(yong)先進的上海國龍智(zhi)能(neng)(neng)高精度(du)數(shu)顯PID自整(zheng)定型儀(yi)表,控(kong)制(zhi)精度(du)±1℃。該溫度(du)控(kong)制(zhi)配有(you)(you)熱電(dian)偶(ou)修(xiu)正功能(neng)(neng)、功率限制(zhi)功能(neng)(neng)及(ji)超溫報警(jing)功能(neng)(neng)。當爐門打開時自動切斷加熱主(zhu)(zhu)電(dian)路,實(shi)現聯鎖保(bao)護。
爐溫記(ji)(ji)錄(lu)采用南通達華記(ji)(ji)錄(lu)儀(yi),對升(sheng)溫及保溫時(shi)(shi)間過程實時(shi)(shi)打印(yin)曲線、記(ji)(ji)錄(lu)溫度,同時(shi)(shi)對加熱(re)主回路(lu)實現監控作(zuo)用,有效地監視整個生產工(gong)藝。