爐門框(kuang)架采用槽鋼制作,側(ce)板和底板采用Q235鋼板焊接,結(jie)構牢固(gu)可(ke)靠(kao),不易變(bian)形和翹曲,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)制系統(tong):主控(kong)(kong)系統(tong)控(kong)(kong)制柜(ju)采用國(guo)際流行立式組合柜(ju)。控(kong)(kong)制柜(ju)外表噴涂電腦色或淺駝色。電控(kong)(kong)面板上裝有電流表、電壓表、溫度控(kong)(kong)制儀及控(kong)(kong)制開關等。
溫(wen)度(du)控(kong)(kong)(kong)制(zhi)主(zhu)(zhu)回(hui)路(lu)采用可控(kong)(kong)(kong)硅(gui)過(guo)零調功觸發,可控(kong)(kong)(kong)硅(gui)采用風冷(leng)形(xing)式,設有(you)過(guo)載、過(guo)熱及(ji)(ji)過(guo)流保護等功能(neng)(neng)。溫(wen)度(du)控(kong)(kong)(kong)制(zhi)儀(yi)表選用先進的上海國龍(long)智能(neng)(neng)高精(jing)度(du)數顯(xian)PID自整定型儀(yi)表,控(kong)(kong)(kong)制(zhi)精(jing)度(du)±1℃。該溫(wen)度(du)控(kong)(kong)(kong)制(zhi)配有(you)熱電(dian)偶修正(zheng)功能(neng)(neng)、功率限(xian)制(zhi)功能(neng)(neng)及(ji)(ji)超溫(wen)報警功能(neng)(neng)。當(dang)爐門打開時自動切斷加(jia)熱主(zhu)(zhu)電(dian)路(lu),實現聯(lian)鎖保護。
爐溫記(ji)錄(lu)采(cai)用(yong)南通達華(hua)記(ji)錄(lu)儀,對升溫及(ji)保溫時間過(guo)程實時打印(yin)曲(qu)線、記(ji)錄(lu)溫度(du),同時對加熱主回(hui)路實現監(jian)控作用(yong),有(you)效地(di)監(jian)視整(zheng)個生產工藝(yi)。