爐門(men)框架采用槽鋼(gang)制(zhi)作,側板(ban)和底板(ban)采用Q235鋼(gang)板(ban)焊接(jie),結構牢固可靠,不(bu)易變(bian)形和翹曲,整體(ti)強(qiang)度(du)好(hao)。
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)系統:主控(kong)(kong)系統控(kong)(kong)制(zhi)柜(ju)采(cai)用國際流行立式組(zu)合柜(ju)。控(kong)(kong)制(zhi)柜(ju)外(wai)表噴涂電腦色(se)或淺駝色(se)。電控(kong)(kong)面板上裝有電流表、電壓(ya)表、溫度控(kong)(kong)制(zhi)儀及控(kong)(kong)制(zhi)開關等。
溫(wen)(wen)度(du)(du)(du)控制(zhi)(zhi)主回路采(cai)用(yong)可控硅過(guo)(guo)零調功(gong)(gong)觸發,可控硅采(cai)用(yong)風冷形式,設有過(guo)(guo)載、過(guo)(guo)熱及過(guo)(guo)流保護等功(gong)(gong)能(neng)(neng)。溫(wen)(wen)度(du)(du)(du)控制(zhi)(zhi)儀表(biao)(biao)選(xuan)用(yong)先進的上海國龍智(zhi)能(neng)(neng)高精度(du)(du)(du)數顯PID自整定型(xing)儀表(biao)(biao),控制(zhi)(zhi)精度(du)(du)(du)±1℃。該溫(wen)(wen)度(du)(du)(du)控制(zhi)(zhi)配(pei)有熱電偶修(xiu)正功(gong)(gong)能(neng)(neng)、功(gong)(gong)率限制(zhi)(zhi)功(gong)(gong)能(neng)(neng)及超溫(wen)(wen)報警功(gong)(gong)能(neng)(neng)。當爐門打(da)開時自動切(qie)斷加熱主電路,實現聯鎖(suo)保護。
爐溫記(ji)錄(lu)(lu)采用(yong)南通達華記(ji)錄(lu)(lu)儀(yi),對(dui)升(sheng)溫及保溫時(shi)間過程(cheng)實時(shi)打印曲線、記(ji)錄(lu)(lu)溫度,同(tong)時(shi)對(dui)加熱主回路實現監(jian)控作用(yong),有(you)效地監(jian)視整(zheng)個生產工藝。