爐(lu)門框架采用槽鋼制作,側(ce)板和(he)底(di)板采用Q235鋼板焊接(jie),結構牢固可靠,不易變形和(he)翹曲,整體(ti)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。
控制(zhi)(zhi)(zhi)系(xi)統:主(zhu)控系(xi)統控制(zhi)(zhi)(zhi)柜采(cai)用(yong)國(guo)際流行立(li)式組合柜。控制(zhi)(zhi)(zhi)柜外表噴涂電(dian)腦色(se)或(huo)淺駝(tuo)色(se)。電(dian)控面板上裝(zhuang)有(you)電(dian)流表、電(dian)壓表、溫(wen)度控制(zhi)(zhi)(zhi)儀及控制(zhi)(zhi)(zhi)開關等。
溫(wen)度(du)(du)(du)控(kong)制(zhi)(zhi)(zhi)主(zhu)回路(lu)(lu)采用可控(kong)硅(gui)過(guo)零調功(gong)(gong)觸發,可控(kong)硅(gui)采用風(feng)冷形式,設有過(guo)載、過(guo)熱及(ji)過(guo)流保護(hu)等(deng)功(gong)(gong)能。溫(wen)度(du)(du)(du)控(kong)制(zhi)(zhi)(zhi)儀表(biao)選用先進的上(shang)海國龍智能高精度(du)(du)(du)數顯PID自整定型儀表(biao),控(kong)制(zhi)(zhi)(zhi)精度(du)(du)(du)±1℃。該溫(wen)度(du)(du)(du)控(kong)制(zhi)(zhi)(zhi)配有熱電(dian)(dian)偶(ou)修正功(gong)(gong)能、功(gong)(gong)率限制(zhi)(zhi)(zhi)功(gong)(gong)能及(ji)超(chao)溫(wen)報警功(gong)(gong)能。當爐門打開時自動(dong)切(qie)斷(duan)加熱主(zhu)電(dian)(dian)路(lu)(lu),實現聯鎖保護(hu)。
爐溫(wen)(wen)記(ji)錄采用南通(tong)達華記(ji)錄儀,對升溫(wen)(wen)及保溫(wen)(wen)時(shi)間過程實時(shi)打印曲線、記(ji)錄溫(wen)(wen)度,同時(shi)對加熱主回路實現監控(kong)作用,有效地監視整個生產工藝。