Inkqubo yokudubula yezitena zodongwe eziveliswa ngu isitena esichasayo abenzi

Ukomisa iqondo lokushisa eliphakathi: 150 ~ 200C (izitena eziqhelekileyo kunye nezitena eziqhelekileyo)

120~160℃(Isitena esimilise okukhethekileyo)

Ubushushu bokukhupha: 70 ~ 80℃

Ubumanzi obushiyekileyo besitena bungaphantsi kwe-2%

Ixesha lokumisa: 16 ~ 24 iiyure

Ukutshiswa kwezitena zodongwe kunokwahlulwa ngokwezigaba ezine

1. Ubushushu obuqhelekileyo ukuya kuma-200 degrees celsius: Ngeli xesha, iqondo lobushushu akufunekanga likhawuleze ukuthintela ukuqhekeka komzimba. Xa udubula kwi-tonnel kiln, ubushushu beendawo zokupaka ezi-4 zokuqala akufanele budlule kwi-200 ℃.

2, 200 ~ 900C: Ngeli nqanaba, izinga lokushisa kufuneka linyuswe ukuze liququzelele ukuphendulwa kweekhemikhali zezinto eziphilayo kunye nokungcola kuluhlaza.

Kwiqondo lobushushu elingama 600℃900℃, umoya oqinileyo oxidizayo kufuneka ugcinwe kwiziko ukunqanda ukwenzeka kwenkunkuma “emnyama”.

3, 900 ℃ ukuya kwelona qondo lobushushu liphezulu lokudubula: Kwinqanaba eliphezulu lobushushu, iqondo lobushushu kufuneka linyuke ngokuthe ngcembe, kwaye liqhubeke nokugcina umoya oxidizing, ukuze umzimba onesiphene ufudunyezwe ngokulinganayo, kwaye kwangaxeshanye, unokuthintela ubushushu. isitena ekuqhekekeni. Ngenxa yokuba i-sintering shrinkage yomelele kakhulu ngaphezu kwe-1100c, izinga lokuncipha liphezulu ukuya kwi-5%, ngoko kubaluleke kakhulu ukugcina ukukhululeka kweqondo lokushisa kunye nokuphelisa uxinzelelo lwangaphakathi.

Ubushushu bokumelana nomlilo kwizitena zodongwe ngokuqhelekileyo buyi-100-150C ngaphezu kobushushu bokushisa. Ukuba iqondo lobushushu be-sintering lodongwe olubiyelweyo luncinci, iqondo lokushisa eliphikisayo kufuneka libe ngaphantsi, ngokufanelekileyo malunga ne-50-100C. Ukushisa kwe-sintering yezitena zodongwe kufuneka kuqinisekise ukuba udongwe oludibeneyo luthambile ngokupheleleyo, kunye nomgangatho ophezulu wepowder ecocekileyo kunye neengqungquthela ezinqabileyo ze-clinker ziphendulwa ngokupheleleyo, ukwenzela ukuba iinqununu ze-clinker ziboshwe, ukwenzela ukuba imveliso ikwazi ukufumana ngokufanelekileyo. amandla kunye nokuzinza kwevolumu. Ubushushu be-sintering ngokuqhelekileyo yi-1250⽞1350c. Xa umxholo we-al2o3 uphezulu, ukushisa kwe-sintering yemveliso kufuneka kwandiswe ngokufanelekileyo, malunga ne-1350 ~ 1380c, kwaye ixesha lokufudumeza ngokubanzi li-2-10h ukuqinisekisa ukusabela okwaneleyo kwimveliso kunye nomgangatho wemveliso ongaguqukiyo.

4 Inqanaba lokupholisa: Ngokotshintsho lwelathisi yesitena sodongwe kwicandelo lokupholisa, izinga lokupholisa kufuneka lincitshiswe ngokukhawuleza xa iqondo lobushushu lingaphezulu kwe-800 ~ 1000℃, kwaye izinga lokupholisa kufuneka lithotywe ngaphantsi kwe-800℃. Enyanisweni, kwimveliso yangempela, izinga lokupholisa langempela elisetyenzisiweyo aliyi kubangela umngcipheko wokuqhekeka okubandayo kwemveliso.