Ungawathuthukisa kanjani amandla kanye nekhono elinamathela lokunamathela kwesihlabathi esihlanganisiwe ekusakazeni kwesihlabathi?

1. Izindlela ezibalulekile zokuthuthukisa amandla

a. Ukusebenziseka kahle kohlelo lwe-resin nokwelashwa

Ukukhetha kabusha:

Ukukhetha izinga eliphakeme le-polymerization Phenolic Phenolic resin (njenge-linear phenolic resin), elinamaketanga amahle amnandi kanye nokuqukethwe okuphezulu kwekhabhoni okuphezulu kwamazinga okushisa aphezulu, kungathuthukisa amandla okushisa aphezulu wesihlabathi isikhunta; Umthamo we-resin ulawulwa ku-1.8% ~ 2.2% (isilinganiso sesisindo sesihlabathi esiluhlaza), futhi angakhushulwa aye ku-2.2% ~ 2.5% ukuze kukhunjulwe okubilisiwe kwesihlabathi noma ama-castings obilisiwe.

Ngokusebenzisa ama-resin aguquliwe (njengokungeza inani elincane le-epoxy resin noma i-ejenti yokuhlangana ye-reen) ukuthuthukisa ukubopha ubuhlobo phakathi kwe-resin kanye namazinga okushisa egumbini, amazinga okushisa asekamelweni angakhuphulwa ngo-10%.

Ukulungiswa Kwe-Agent Ejenti:

I-Urotropin (i-HexamethyleteteTramine ikhethwe njenge-ejenti yelapha, enomthamo ongu-12% kuya ku-15% wokuqukethwe kwe-resin, futhi u-0.5% kuya ku-1% we-calcium angezwe ukuthuthukisa "ibhuloho" lokuqina elibangelwa yi- "bridging" enganele phakathi kwesihlabathi.

b. Ukulawulwa kwe-Grading yesihlabathi esiluhlaza kanye nezinhlayiya zesihlabathi

Ukukhetha kwesihlabathi okuluhlaza:

Usebenzisa isihlabathi se-quartz ngokuzuliswa okuhle nokubushelelezi (ukuzungeza okuhlanganisiwe Gwema ukusebenzisa isihlabathi esiluhlaza esinokuqukethwe kwe-maud kukhulu kune-0.2% ukuvikela ukungcola kobumba ekunciphiseni umphumela wokuhlanganisa ubuhlobo.

Usayizi wesayizi lokusanhlamvu:

Usebenzisa isihlabathi esixubile noma esixubile esixubile (njengokuxubana nge-50/11/11 mesh ngesilinganiso esingu-7: 3) ukugcwalisa izikhala phakathi kwezinhlayiya eziyi-90: 95%, futhi amandla athuthukiswa ngokulandelana.

c. Inqubo yokusiza okusizwayo

Inqubo yokuhlanganisa ifilimu:

Lawula amazinga okushisa okuhambisana no-180-200 ℃ nesikhathi sokugcina kabusha imizuzu emi-3-5 ukuqinisekisa ifilimu efanayo ne-resin eqhubekayo (ubukhulu be-5-8 μ).

Ukulawula Ukuqina:

Ukwamukela ukuqhuma kwesihlabathi noma ukudlidliza + ukukhishwa kwenqubomgomo ye-compaction compaction inqubo yokuhlangana, ukuphakama kwesinkwa esingezansi kungu-95%, futhi ukuphakama kwesinkwa esingenhla, ukugwema ukukhululeka nokunganele.

2. Indlela Eyinhloko Yokuthuthukisa Amandla Wokumelana Nomhlabathi

a. Thuthukisa ukumelana nomlilo kanye nezindawo zokuvimba

Isihlabathi esiphakeme esivuselelayo kanye nezithasiselo:

Sebenzisa isihlabathi se-zircon (ngokumelana nomlilo ka-1850 ℃) noma isihlabathi se-chromite (1800 ℃) esikhundleni se-quartz sand esiteji esithambekele ekuxubeni okuphezulu, noma ungeze u-3% we-magnesium sand powder kanye nama-magcy point powder kanye nama-magcy tow powle (njenge-feo · soio ₂).

I-inert powder engezansi:

Faka u-2% kuya ku-4% flake afana ne-graphite powder noma i-molybdenum u-absulfide (molybdenum u-absulfide (molybdem diskufide (molyb ₂) ukwakha ifilimu yokuthambisa carbon emazingeni okushisa aphezulu, kunciphisa ukufakwa kwensimbi encibilikisiwe esihlabathini. Ngasikhathi sinye, ukuthuthuka okushisayo kwe-graphite kungasheshisa ukuncipha kokushisa kwasekhaya futhi kufinyeze isikhathi sokuhlala izinga lokushisa lensimbi ebilisiwe.

b. Lungiselela ukucindezelwa kwe-interface reaction

Ukuqinisa Ukuqiniswa:

I-Brush zircon powder coating (okuhlushwa 40% ~ 50%) noma i-graphene esekelwe enhlanganisweni ebusweni besihlabathi isikhunta, ngokuqina okungu-0.3 ~ 0.5mm, kwakheka umgoqo obonakalayo; I-1% ~ 2% i-boric acid ingangezwa kuma-coatis ukukhiqiza isigaba sengilazi emazingeni okushisa aphezulu, ukugcwalisa izikhala phakathi kwezinhlayiya zesihlabathi nokuvimba ukufakwa kwe-penetation yensimbi ebilisiwe.

Anti Adhesive Sand Additive:

Faka u-1% kuya ku-2% calcium carbonate (CACO) noma i-Magnesium Carbonate (MGCO) kwizithako, ezobola emazingeni okushisa aphezulu ukuze akhiqize igesi yesihlabathi futhi avimbele ukunamathela kwemishini yensimbi encibilikisiwe esihlabathini; I-CAO ne-MGO eyenziwe ngokuwohloka kanyekanye kungasabela nge-FEO ku-Iron ebilisiwe, kunciphisa ukunamathela kwesihlabathi samakhemikhali.

c. Lawula ukukhiqizwa kwegesi nokuqina kwesihlabathi

Ifomula ephansi yokuphuma:

Yomisa isihlabathi esiluhlaza ngo-200-250 ℃ kumahora ama-2 ngaphambi kokusebenzisa ukususa umswakama nezinto eziphilayo; I-resin ikhethiwe ikhipha i-phenolic resin ye-phenolic, ngesilinganiso sokukhishwa kwegesi esingaphansi kwe-20ml / g, ukugwema ukuthambisa kwasendaweni kwesihlabathi sokubumba kanye nokufakwa kwensimbi encibilikisiwe okubangelwa yigesi emazingeni okushisa aphezulu.

Ukuqhekeka kanye nokuqina kwamandla:

Faka u-0.5% ~ 1% ama-barium sulfate (i-basox) ku-resin, ebola kancane emazingeni okushisa aphezulu ukuze anciphise amandla wefilimu ye-resin, okwenza isihlabathi isikhunta sithambekele ukuwa ngemuva kokuqina nokuvimbela izinsalela zesihlabathi; Ngasikhathi sinye, qinisekisa amandla aphezulu okushisa (amandla ashubile> 0.8MPA ngo-800 ℃) ukugwema ukuthambisa ngaphambi kwesikhathi kwesinkwa.

I-3. Isu elisebenzisana ngokubambisana (amandla okulinganisa nokumelana nesihlabathi)

Ukulungiswa kwefomula coupling:

Isibonelo, ingxube ye-zircon sand ephakeme ye-zircon (60%) kanye ne-quartz sand (40%), ihlanganiswe ne-2.2% i-apotropin, i-3% i-urotropin, i-3% i-upotropin, i-3% i-graphite sand powder, icindezela isihlabathi esinamathela ngomthelela ohlanganisiwe wesihlabathi se-magnesia negrafu.

Inqubo yokuqinisekiswa kanye ne-iteration:

Qhathanisa izinkomishi ezinokwakhiwa okuhlukile ngesikhathi sokukhiqizwa kwesilingo:

Ukuhlolwa kwamandla: Amandla okuhlosiwe okuhlosiwe ezindaweni zokushisa zasekamelweni yi-1.2-1.5mpa, futhi amandla ashisayo ngo-800 ℃ akhulu kune-0.8MPA;

Umphumela we-anti sand adhesion effect: Dissect the cast I-Vala eliqeqeshiwe li- <0.5mm, kanye ne-raughness raughness ra ≤ 25 μ m.

Isifinyezo:

Amandla kanye ne-anti sand adhesion amandla adinga ukufezekiswa ngokushintshwa kwe- "resin restforced bonding, isithiyo sezinto ezibonakalayo, nokuvinjwa kokuphendula okusebenzayo, kanye nokuvinjwa kokuphendula okuhlukile. Ekukhiqizweni kwangempela, ukuguqulwa kabusha kwe-resin kanye nesihlabathi esiphezulu sokuphindisela kungasetshenziselwa ukwenza ngcono ukusebenza okuyisisekelo, bese kuhlanganiswa nezimbozo kanye nezengezo ukwenza kahle i-interface anti slouding sticking saclant Amandla. Ngasikhathi sinye, ukukhiqizwa kwegesi nokugqwala kungalawulwa ukugwema ukunamathela kwesihlabathi ngenxa yokulwa okunganele okubangelwa amandla aphezulu.