Uvavanya njani ngokukhawuleza ukusebenza kokuxobuka, ukuphefumla, kunye namandla obushushu obuphezulu bengubo yentsimbi engwevu elahlekileyo?

Indlela yokuvavanya ozenzeleyo kwiipropathi ezintathu zentsimbi engwevu ephulukene nogwebu (ubuchule bokunyibilika, amandla obushushu obuphezulu, ukuphefumla), kudityaniswe nezixhobo ezinexabiso eliphantsi kunye namanyathelo alula okusebenza:

1. Injongo yovavanyo lwe-shell peeling: Ukuvavanya ubunzima bokukhupha i-coating ukusuka kumphezulu we-castings emva kokugalelwa.  

Indlela: Ukulungiselela isampuli:

1. Sebenzisa i-EPS ukwenza i-50 × 50 × 10mm ibhloko yovavanyo, cwilisa i-coating ukuze ivavanywe, kwaye uyomise ukulinda.  

2. Faka ibhloko yovavanyo kwisanti yequartz eyomileyo kwaye ufanise ukuphosa kwiziko lobushushu obuphezulu (ubushushu obushushu obumalunga ne-1400 ° C ngentsimbi engwevu kwaye igcinwe imizuzu emi-5).  

Amanyathelo okuvavanya: Emva kokupholisa, cofa kancinci umphezulu wokugalela ngentonga yentsimbi kwaye ujonge ukuxobuka komaleko wokugquma. Umgangatho wokukala: Okugqwesileyo: Ukuzigquma okuzenzekelayo ukuxobula> 90%;  

Okuhle:> I-80% i-detachment emva kokucofa ukukhanya;  

Mahlwempu: Kufuneka ikhutshelwe ngamandla.  

Inqaku eliphambili: Ukuba i-coating iqukethe i-bentonite okanye iifibers, ingqwalasela kufuneka ihlawulwe kwiipropati eziphezulu ze-sintering, ezinokuthi ziphuculwe ngokulungelelanisa umlinganiselo wee-aggregates (ezifana ne-quartz powder) kwii-binders.

2. Amandla aphezulu obushushu

Injongo yovavanyo: Ukuvavanya i-anti yokuqhekeka okanye ukuxobula isakhono sokugquma kumaqondo obushushu aphezulu.  

Indlela: Ukulungiswa kwesampulu: Gcoba isigqubuthelo kumnatha wesinyithi (ofana nomnatha wocingo) ukwenza i-2-3mm yokwambathisa obukhulu. Emva kokumisa, yinqumle kwiisampuli ze-strip ze-50 × 10mm.  

Amanyathelo ovavanyo:

1. Beka isampuli kwisithando somlilo esiphezulu, uphakamise izinga lokushisa kwi-1000 ° C (ukulinganisa ubushushu obukhawulezayo bokuqhagamshelana nentsimbi enyibilikisiweyo), kwaye ubambe imizuzu eyi-10.  

2. Ukuqwalaselwa emva kokususwa: akukho zintanda: amandla abalaseleyo obushushu obuphezulu; Iintanda ezincinci: zamkelekile; Ukuchithwa kwePowder: Izibophelelo eziphezulu zobushushu (ezifana ne-silica sol okanye i-samente ye-aluminate) kufuneka zongezwe. Isisombululo esisesinye: Sebenzisa izitena eziphikisayo njenge-substrate yokufaka ipeyinti, kwaye uqhube uvavanyo lokukrala emva kokudubula kobushushu obuphezulu (ubunzima ≥ 3H ufanelekile).

3. Injongo yokuvavanya ukuphefumla: Ukulinganisa ukukwazi kwengubo yokuvumela igesi ukuba idlule kwaye igweme i-porosity kwi-casting. Indlela elula: Isixhobo: ityhubhu yeglasi (ububanzi bangaphakathi obuyi-20mm, ubude be-300mm), kunye nemesh yentsimbi exhasa umaleko wokugquma ezantsi (ukwenza isampuli engqindilili ye-1-2mm). Beka ityhubhu yeglasi emileyo ngokuthe nkqo kwaye uqhagamshele i-U-shaped gauge yoxinzelelo lwamanzi ngezantsi.  

Amanyathelo:

1. Yazisa uxinzelelo lomoya rhoqo ukusuka phezulu ityhubhu yeglasi (usebenzisa impompo yomoya okanye ibhaluni, ngoxinzelelo lwe-0.1MPa).  

2. Ukulinganisa umthamo werhasi edlula kwi-coating ngexesha leyunithi (usebenzisa indlela yokuqokelela igesi engaphantsi kwamanzi ukulinganisa isantya se-bubble).  

Ukubala: Ukuphefumla=Umlinganiselo wokuqukuqela kwerhasi (mL/min)/(Indawo yokwambathisa x Umahluko woxinzelelo). Ixabiso lereferensi: Ukungena kwentsimbi engwevu yentsimbi kufuna ukuba ngaphezulu kwe-50 (iyunithi: cm ³ · cm/(cm ² · min · Pa)).  

Ingqalelo: Ukuba izinga le-bubble likhawuleza kakhulu, kuyimfuneko ukwandisa i-fiber okanye i-sheet material (efana ne-mica) kwi-coating yokunciphisa ukuphefumla.

Isishwankathelo samanqaku aphambili ozenzele kunye neengcebiso zohlengahlengiso lwezinto:

Ukungakwazi ukunyibilika kakubi? Ukunciphisa ama-binders aphezulu kunye nokwandisa i-graphite powder okanye i-talc powder. Ubushushu obuphantsi? Yongeza i-silica sol (3-5%) okanye i-samente ye-aluminate.  

Ukungaphefumli ngokwaneleyo? Yongeza i-0.1-0.3% ye-fiber yokhuni okanye ulungelelanise ubungakanani be-particle ye-aggregate (iingqungquthela ezinqabileyo zokuphucula ukuphefumla).  

Isikhumbuzi sokhuseleko: Nxiba iiglavu ezikhuselayo kunye nemaski yobuso ngexesha lovavanyo lobushushu obuphezulu ukunqanda ukutsha.  

Ngokusebenzisa iindlela ezi ngasentla, ukusebenza kweengubo kunokuvavanywa kwiindleko eziphantsi, ezifanelekileyo kwiindibano zocweyo ezincinci okanye iilebhu. Ukufumana idatha echanekileyo, ulungelelwaniso olongezelelweyo lunokwenziwa ngokubambisana nemigangatho yoshishino efana ne-JB/T 9226-2008.