爐門框架(jia)采(cai)用槽鋼制作，側板(ban)和底板(ban)采(cai)用Q235鋼板(ban)焊接，結(jie)構(gou)牢固(gu)可(ke)靠(kao)，不(bu)易變形(xing)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(xi)統：主控(kong)系(xi)統控(kong)制柜(ju)采用國(guo)際流行(xing)立式組合柜(ju)。控(kong)制柜(ju)外(wai)表(biao)噴涂電腦色(se)或(huo)淺駝色(se)。電控(kong)面板上裝有電流表(biao)、電壓表(biao)、溫度控(kong)制儀(yi)及控(kong)制開關等。

溫(wen)(wen)(wen)度(du)控(kong)(kong)制(zhi)主回路采用(yong)可控(kong)(kong)硅(gui)過(guo)零調功(gong)(gong)(gong)觸發，可控(kong)(kong)硅(gui)采用(yong)風冷形式，設有過(guo)載、過(guo)熱及過(guo)流保護(hu)(hu)等功(gong)(gong)(gong)能。溫(wen)(wen)(wen)度(du)控(kong)(kong)制(zhi)儀表選(xuan)用(yong)先進的上(shang)海國龍智(zhi)能高精度(du)數(shu)顯PID自(zi)整(zheng)定型儀表，控(kong)(kong)制(zhi)精度(du)±1℃。該(gai)溫(wen)(wen)(wen)度(du)控(kong)(kong)制(zhi)配(pei)有熱電(dian)(dian)偶修正功(gong)(gong)(gong)能、功(gong)(gong)(gong)率(lv)限制(zhi)功(gong)(gong)(gong)能及超溫(wen)(wen)(wen)報警(jing)功(gong)(gong)(gong)能。當爐(lu)門打開(kai)時(shi)自(zi)動切斷加熱主電(dian)(dian)路，實現聯鎖保護(hu)(hu)。

爐溫記錄(lu)采用南通(tong)達(da)華記錄(lu)儀，對(dui)升溫及保溫時(shi)間過程實時(shi)打(da)印(yin)曲線、記錄(lu)溫度(du)，同時(shi)對(dui)加熱主(zhu)回(hui)路實現監控作用，有效地監視整(zheng)個生產工藝。