爐門框(kuang)架采用槽鋼制作(zuo)，側板和(he)(he)底板采用Q235鋼板焊接，結構牢(lao)固可靠，不易變形和(he)(he)翹曲(qu)，整體強度(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)制系(xi)統：主控(kong)系(xi)統控(kong)制柜(ju)(ju)采用國際流(liu)行立式組合柜(ju)(ju)。控(kong)制柜(ju)(ju)外表噴涂電(dian)腦色或淺(qian)駝色。電(dian)控(kong)面板(ban)上裝有電(dian)流(liu)表、電(dian)壓表、溫度控(kong)制儀(yi)及(ji)控(kong)制開(kai)關等。

溫(wen)度(du)(du)控(kong)(kong)制(zhi)主回(hui)路采(cai)用可控(kong)(kong)硅過(guo)零(ling)調功(gong)(gong)(gong)觸發，可控(kong)(kong)硅采(cai)用風冷形式，設有過(guo)載(zai)、過(guo)熱及(ji)過(guo)流(liu)保護等功(gong)(gong)(gong)能(neng)。溫(wen)度(du)(du)控(kong)(kong)制(zhi)儀表選(xuan)用先進的上海國龍(long)智(zhi)能(neng)高精(jing)度(du)(du)數(shu)顯PID自整定型儀表，控(kong)(kong)制(zhi)精(jing)度(du)(du)±1℃。該溫(wen)度(du)(du)控(kong)(kong)制(zhi)配有熱電(dian)偶修正(zheng)功(gong)(gong)(gong)能(neng)、功(gong)(gong)(gong)率(lv)限制(zhi)功(gong)(gong)(gong)能(neng)及(ji)超溫(wen)報(bao)警功(gong)(gong)(gong)能(neng)。當爐門打開時自動(dong)切斷(duan)加熱主電(dian)路，實現(xian)聯鎖(suo)保護。

爐(lu)溫記(ji)錄采用(yong)南通(tong)達華記(ji)錄儀，對升溫及保溫時間(jian)過(guo)程實時打印曲線、記(ji)錄溫度，同時對加熱主回路實現(xian)監(jian)(jian)控作用(yong)，有效地監(jian)(jian)視整(zheng)個生產工藝。