爐門框架(jia)采用(yong)槽鋼制作,側板和底板采用(yong)Q235鋼板焊接(jie),結(jie)構牢固可靠(kao),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(zhi)系(xi)統(tong):主控(kong)系(xi)統(tong)控(kong)制(zhi)柜采用(yong)國際(ji)流行立式(shi)組合柜。控(kong)制(zhi)柜外表噴涂電腦(nao)色或(huo)淺駝色。電控(kong)面板上裝(zhuang)有電流表、電壓表、溫度(du)控(kong)制(zhi)儀及(ji)控(kong)制(zhi)開關等。
溫(wen)度控制(zhi)(zhi)主(zhu)回路采用(yong)可控硅(gui)過(guo)零調功(gong)(gong)(gong)(gong)觸發(fa),可控硅(gui)采用(yong)風(feng)冷形式,設(she)有過(guo)載、過(guo)熱及過(guo)流保(bao)護(hu)等功(gong)(gong)(gong)(gong)能(neng)(neng)。溫(wen)度控制(zhi)(zhi)儀表(biao)選(xuan)用(yong)先(xian)進(jin)的上海國龍智能(neng)(neng)高精度數顯(xian)PID自整定型儀表(biao),控制(zhi)(zhi)精度±1℃。該溫(wen)度控制(zhi)(zhi)配有熱電偶修正功(gong)(gong)(gong)(gong)能(neng)(neng)、功(gong)(gong)(gong)(gong)率限(xian)制(zhi)(zhi)功(gong)(gong)(gong)(gong)能(neng)(neng)及超溫(wen)報警功(gong)(gong)(gong)(gong)能(neng)(neng)。當爐門打開時自動切斷加熱主(zhu)電路,實現聯鎖保(bao)護(hu)。
爐溫(wen)記(ji)錄(lu)采用南通達華記(ji)錄(lu)儀,對(dui)升(sheng)溫(wen)及保溫(wen)時間(jian)過程(cheng)實(shi)(shi)時打(da)印(yin)曲線(xian)、記(ji)錄(lu)溫(wen)度,同(tong)時對(dui)加熱主回(hui)路實(shi)(shi)現監控作(zuo)用,有效地(di)監視整個生產工藝。