爐門框架采(cai)用(yong)槽鋼制作,側板和底板采(cai)用(yong)Q235鋼板焊接,結構牢固可靠,不易變形(xing)和翹曲,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)制(zhi)系統(tong):主控(kong)系統(tong)控(kong)制(zhi)柜(ju)采用(yong)國(guo)際流(liu)行立(li)式組合柜(ju)。控(kong)制(zhi)柜(ju)外表(biao)噴涂電腦色(se)或淺駝色(se)。電控(kong)面(mian)板上裝(zhuang)有電流(liu)表(biao)、電壓表(biao)、溫(wen)度控(kong)制(zhi)儀及控(kong)制(zhi)開關等。
溫(wen)度(du)(du)控(kong)制主(zhu)回路(lu)采用(yong)可控(kong)硅(gui)(gui)過(guo)(guo)零調功(gong)(gong)(gong)觸發,可控(kong)硅(gui)(gui)采用(yong)風(feng)冷形式,設有過(guo)(guo)載、過(guo)(guo)熱(re)(re)及過(guo)(guo)流保(bao)護等功(gong)(gong)(gong)能(neng)。溫(wen)度(du)(du)控(kong)制儀表選用(yong)先進的上海國(guo)龍智能(neng)高精度(du)(du)數顯PID自(zi)整定型(xing)儀表,控(kong)制精度(du)(du)±1℃。該溫(wen)度(du)(du)控(kong)制配有熱(re)(re)電(dian)偶修正功(gong)(gong)(gong)能(neng)、功(gong)(gong)(gong)率(lv)限制功(gong)(gong)(gong)能(neng)及超(chao)溫(wen)報(bao)警功(gong)(gong)(gong)能(neng)。當(dang)爐門打開時自(zi)動切斷加熱(re)(re)主(zhu)電(dian)路(lu),實現聯鎖保(bao)護。
爐溫記錄采用南通達華(hua)記錄儀,對(dui)升溫及保(bao)溫時(shi)間過程實時(shi)打印曲線、記錄溫度,同時(shi)對(dui)加熱(re)主回路實現監控作(zuo)用,有效地監視整個(ge)生產工藝(yi)。