爐門框架采(cai)用槽鋼制作,側板(ban)和底板(ban)采(cai)用Q235鋼板(ban)焊接(jie),結構牢固(gu)可靠,不易變形和翹曲,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)系統:主控(kong)系統控(kong)制(zhi)柜采(cai)用國際流行立式組合柜。控(kong)制(zhi)柜外表(biao)噴(pen)涂電(dian)(dian)(dian)腦色(se)(se)或淺駝色(se)(se)。電(dian)(dian)(dian)控(kong)面板上裝有電(dian)(dian)(dian)流表(biao)、電(dian)(dian)(dian)壓表(biao)、溫度控(kong)制(zhi)儀及(ji)控(kong)制(zhi)開關等(deng)。
溫(wen)(wen)度(du)控(kong)制主回路(lu)采用(yong)可控(kong)硅過零調功(gong)觸發,可控(kong)硅采用(yong)風冷形式,設有過載、過熱(re)及過流保(bao)(bao)護等功(gong)能。溫(wen)(wen)度(du)控(kong)制儀(yi)表選用(yong)先進的上(shang)海國(guo)龍智能高(gao)精(jing)度(du)數顯PID自(zi)整定型(xing)儀(yi)表,控(kong)制精(jing)度(du)±1℃。該溫(wen)(wen)度(du)控(kong)制配(pei)有熱(re)電偶修正(zheng)功(gong)能、功(gong)率限制功(gong)能及超(chao)溫(wen)(wen)報警功(gong)能。當爐門打開時自(zi)動(dong)切斷加熱(re)主電路(lu),實(shi)現聯鎖保(bao)(bao)護。
爐溫(wen)(wen)記(ji)錄(lu)采用(yong)南通達華(hua)記(ji)錄(lu)儀,對升溫(wen)(wen)及保溫(wen)(wen)時(shi)(shi)(shi)間過程實時(shi)(shi)(shi)打印曲線、記(ji)錄(lu)溫(wen)(wen)度(du),同時(shi)(shi)(shi)對加(jia)熱主回路實現監控作(zuo)用(yong),有效地(di)監視整(zheng)個生(sheng)產工藝。