爐門框架采用槽鋼(gang)(gang)制(zhi)作，側板(ban)和(he)底(di)板(ban)采用Q235鋼(gang)(gang)板(ban)焊接，結(jie)構牢固可靠，不(bu)易變形和(he)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)(kong)(kong)制(zhi)系統：主(zhu)控(kong)(kong)(kong)(kong)系統控(kong)(kong)(kong)(kong)制(zhi)柜采用國際流行立(li)式組合柜。控(kong)(kong)(kong)(kong)制(zhi)柜外表噴涂電(dian)腦(nao)色或(huo)淺駝色。電(dian)控(kong)(kong)(kong)(kong)面(mian)板上裝(zhuang)有電(dian)流表、電(dian)壓表、溫度控(kong)(kong)(kong)(kong)制(zhi)儀及控(kong)(kong)(kong)(kong)制(zhi)開關等。

溫(wen)度控(kong)(kong)制(zhi)(zhi)主回路采用可控(kong)(kong)硅過零調功觸發，可控(kong)(kong)硅采用風冷形式，設(she)有(you)過載、過熱及過流保(bao)(bao)護等功能(neng)。溫(wen)度控(kong)(kong)制(zhi)(zhi)儀表選用先進(jin)的上海國龍智能(neng)高(gao)精度數顯PID自(zi)整定型儀表，控(kong)(kong)制(zhi)(zhi)精度±1℃。該溫(wen)度控(kong)(kong)制(zhi)(zhi)配有(you)熱電偶修(xiu)正功能(neng)、功率限制(zhi)(zhi)功能(neng)及超溫(wen)報(bao)警功能(neng)。當爐門打開時自(zi)動切斷(duan)加熱主電路，實現(xian)聯鎖保(bao)(bao)護。

爐溫(wen)記錄采(cai)用(yong)南通達華記錄儀(yi)，對升溫(wen)及保溫(wen)時(shi)(shi)間過(guo)程實(shi)時(shi)(shi)打(da)印曲線、記錄溫(wen)度(du)，同時(shi)(shi)對加熱(re)主回路實(shi)現監控(kong)作用(yong)，有效地監視整個生(sheng)產(chan)工藝。