爐門框架(jia)采用槽鋼制作,側板和(he)底板采用Q235鋼板焊接,結構牢(lao)固可(ke)靠,不易(yi)變形(xing)和(he)翹(qiao)曲,整(zheng)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)(zhi)系(xi)(xi)統(tong):主(zhu)控(kong)系(xi)(xi)統(tong)控(kong)制(zhi)(zhi)柜采用國際流(liu)行立式組合柜。控(kong)制(zhi)(zhi)柜外表噴涂電腦色或淺駝色。電控(kong)面(mian)板上裝有(you)電流(liu)表、電壓表、溫度控(kong)制(zhi)(zhi)儀及控(kong)制(zhi)(zhi)開關(guan)等。
溫度(du)(du)(du)控(kong)制主回路采用(yong)可控(kong)硅過(guo)零調功(gong)(gong)觸發,可控(kong)硅采用(yong)風冷形式,設有過(guo)載(zai)、過(guo)熱(re)及(ji)過(guo)流保護等功(gong)(gong)能(neng)。溫度(du)(du)(du)控(kong)制儀表選用(yong)先進的上海國(guo)龍(long)智能(neng)高精度(du)(du)(du)數顯PID自整定型儀表,控(kong)制精度(du)(du)(du)±1℃。該溫度(du)(du)(du)控(kong)制配有熱(re)電偶修正(zheng)功(gong)(gong)能(neng)、功(gong)(gong)率限制功(gong)(gong)能(neng)及(ji)超溫報(bao)警功(gong)(gong)能(neng)。當爐門打開時(shi)自動切斷加熱(re)主電路,實(shi)現聯鎖保護。
爐溫記錄采用南通達(da)華記錄儀,對升(sheng)溫及保溫時間過程實(shi)時打印曲(qu)線、記錄溫度,同時對加(jia)熱(re)主回路實(shi)現(xian)監控(kong)作用,有效(xiao)地監視整個生產工(gong)藝。