爐門框架采用(yong)槽鋼(gang)制(zhi)作,側板和底(di)板采用(yong)Q235鋼(gang)板焊(han)接,結構牢固(gu)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)系統(tong):主控(kong)系統(tong)控(kong)制(zhi)柜(ju)(ju)采用國(guo)際流行立式組合(he)柜(ju)(ju)。控(kong)制(zhi)柜(ju)(ju)外表(biao)噴涂電(dian)腦色或(huo)淺駝色。電(dian)控(kong)面(mian)板上裝有電(dian)流表(biao)、電(dian)壓表(biao)、溫(wen)度控(kong)制(zhi)儀及控(kong)制(zhi)開關等。
溫(wen)度(du)(du)控(kong)(kong)制主回路采用(yong)可(ke)控(kong)(kong)硅過(guo)零調(diao)功(gong)觸發,可(ke)控(kong)(kong)硅采用(yong)風冷形(xing)式,設(she)有過(guo)載、過(guo)熱及(ji)過(guo)流保(bao)護等功(gong)能(neng)。溫(wen)度(du)(du)控(kong)(kong)制儀表選用(yong)先進的上海國龍智(zhi)能(neng)高精(jing)度(du)(du)數顯PID自(zi)(zi)整定型儀表,控(kong)(kong)制精(jing)度(du)(du)±1℃。該溫(wen)度(du)(du)控(kong)(kong)制配有熱電(dian)偶修正功(gong)能(neng)、功(gong)率限制功(gong)能(neng)及(ji)超溫(wen)報警(jing)功(gong)能(neng)。當(dang)爐門打開時自(zi)(zi)動(dong)切斷加熱主電(dian)路,實現聯鎖(suo)保(bao)護。
爐溫(wen)記(ji)錄采(cai)用(yong)南(nan)通(tong)達(da)華記(ji)錄儀,對升(sheng)溫(wen)及保溫(wen)時間(jian)過程實時打印(yin)曲線、記(ji)錄溫(wen)度,同時對加熱(re)主(zhu)回路實現監控作用(yong),有效地監視整個生產工(gong)藝。