爐門框架采用(yong)槽鋼(gang)制作,側(ce)板(ban)和底板(ban)采用(yong)Q235鋼(gang)板(ban)焊接,結構牢固可靠,不易變形和翹曲,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)制系統(tong):主控(kong)系統(tong)控(kong)制柜(ju)(ju)采用(yong)國際流(liu)行立式組合柜(ju)(ju)。控(kong)制柜(ju)(ju)外(wai)表(biao)噴涂電(dian)腦色或淺(qian)駝色。電(dian)控(kong)面板上(shang)裝有電(dian)流(liu)表(biao)、電(dian)壓表(biao)、溫度控(kong)制儀及控(kong)制開關(guan)等。
溫(wen)(wen)度(du)控(kong)制(zhi)主回(hui)路(lu)采(cai)用(yong)可(ke)控(kong)硅過零調功(gong)(gong)觸發,可(ke)控(kong)硅采(cai)用(yong)風(feng)冷形式(shi),設有(you)過載(zai)、過熱及過流保(bao)(bao)護等功(gong)(gong)能(neng)。溫(wen)(wen)度(du)控(kong)制(zhi)儀(yi)(yi)表(biao)選(xuan)用(yong)先進的上海國(guo)龍(long)智(zhi)能(neng)高(gao)精度(du)數(shu)顯PID自(zi)整定型(xing)儀(yi)(yi)表(biao),控(kong)制(zhi)精度(du)±1℃。該溫(wen)(wen)度(du)控(kong)制(zhi)配有(you)熱電偶(ou)修正功(gong)(gong)能(neng)、功(gong)(gong)率(lv)限(xian)制(zhi)功(gong)(gong)能(neng)及超溫(wen)(wen)報(bao)警功(gong)(gong)能(neng)。當爐門打開時自(zi)動切斷加熱主電路(lu),實現聯鎖保(bao)(bao)護。
爐(lu)溫記錄(lu)(lu)采(cai)用(yong)南通達華記錄(lu)(lu)儀,對升溫及保溫時(shi)間(jian)過程實時(shi)打(da)印曲線、記錄(lu)(lu)溫度(du),同(tong)時(shi)對加熱主回路實現監(jian)控(kong)作用(yong),有效(xiao)地監(jian)視整個生產工藝(yi)。