Ukukhishwa kwegwebu elilahlekile (okubuye kwaziwe ngokuthi ukubunjwa kwesikhunta sangempela) kwenziwa ngepulasitiki eyigwebu (EPS, STMMA noma EPMMA) impahla ye-polymer ibe isikhunta sangempela esinesakhiwo nosayizi ofanayo ncamashi nezingxenye okufanele zikhiqizwe futhi ziphonswe, futhi i-dip-coated. nge-refractory coating (eqinisiwe) , ebushelelezi futhi ephefumulayo) futhi yomisiwe, ingcwatshwa esihlabathini esomile se-quartz futhi ingaphansi kwemodeli yokudlidliza ye-3-dimensional. Insimbi encibilikisiwe ithululelwa ebhokisini lesihlabathi elibunjwa ngaphansi kwengcindezi engalungile, ukuze imodeli yezinto ze-polymer ifudumale futhi iqhume, bese ikhishwa. Indlela entsha yokulingisa esebenzisa insimbi ewuketshezi ukuze imiselele inqubo yesikhathi esisodwa yokubunjwa kwesikhunta eyakhiwe ngemva kokupholisa nokuqiniswa ukuze kukhiqizwe ukulingwa. Ukukhipha igwebu elilahlekile kunezici ezilandelayo: 1. Ukusakaza kungokwekhwalithi enhle nezindleko eziphansi; 2. Izinto ezisetshenziswayo azinqunyelwe futhi zifanele wonke amasayizi; 3. Ukunemba okuphezulu, indawo ebushelelezi, ukuhlanzwa okuncane, nomshini omncane; 4. Ukukhubazeka kwangaphakathi kuyancipha kakhulu futhi isakhiwo sokubunjwa siyathuthukiswa. Kuminyene; 5. Ingakwazi ukukhiqiza izinto ezinkulu nezinkulu; 6. Ilungele ukukhiqizwa kwenqwaba yama-castings afanayo; 7. Ilungele ukusebenza ngesandla kanye nokukhiqizwa komugqa wokuhlanganisa okuzenzakalelayo nokulawula ukusebenza; 8. Isimo sokukhiqiza somugqa wokukhiqiza sihlangabezana nezidingo zemingcele yezobuchwepheshe yokuvikelwa kwemvelo. ; 9. Ingathuthukisa kakhulu indawo yokusebenza kanye nezimo zokukhiqiza zomugqa wokukhiqiza wokuphonsa, inciphise umfutho wabasebenzi, futhi inciphise ukusetshenziswa kwamandla.
1. Vacuum low pressure elahlekile ubuchwepheshe bokukhipha igwebu. Ihlanganisa izinzuzo zezobuchwepheshe zokukhishwa kwe-low-pressure kanye ne-vacuum elahlekile ye-foam casting, iqedela inqubo yokugcwalisa ngaphansi kwengcindezi yomoya olawulekayo, futhi ithuthukisa kakhulu ikhono lokugcwalisa le-alloy. Uma kuqhathaniswa ne-die casting, ukutshalwa kwezimali kwemishini kuncane, izindleko ziphansi, futhi ama-castings angaqiniswa ngokwelashwa kokushisa; uma kuqhathaniswa nokusakazwa kwesihlabathi, ukulingisa kunokunemba okuphezulu, ukuhwaqeka kwendawo ephansi, ukukhiqiza okuphezulu, nokusebenza kahle. Ngaphansi kwesenzo se-anti-gravity, i-sprue iba isiteshi esifushane, futhi ukulahlekelwa ukushisa okuthulula kuncane. Uhlelo lokuthulula lwe-alloy castings lulula futhi lusebenza kahle, lunomkhiqizo ophezulu kanye nesakhiwo esiminyene. Izinga lokushisa elidingekayo lokuthulula liphansi futhi lifanele ukuthululwa nokwakhiwa kwama-alloys ahlukahlukene angenayo insimbi. .
I-2.Pressure elahlekile ubuchwepheshe bokuphonsa igwebu. Ihlanganisa ubuchwepheshe bokuphonsa igwebu elahlekile nobuchwepheshe bokuqinisa i-pressure crystallization. Umgomo wawo uwukuthela insimbi encibilikisiwe ethangini lokucindezela elinebhokisi lesihlabathi ukuze wenze isikhunta segwebu sigcwale futhi sinyamalale, bese uvala ngokushesha ithangi lokucindezela bese wethula igesi ngomfutho othile. , okwenza insimbi encibilikisiwe iqine futhi icwebezele ngaphansi kwengcindezi. Isici salobu buchwepheshe ukuthi bunganciphisa kakhulu iziphambeko zokuphonsa ezifana nezimbotshana ezinciphayo, i-shrinkage porosity, nama-pores ekubunjweni, kukhuphule ukuminyana kokusakazwa, futhi kuthuthukise izakhiwo zemishini zokuphonsa. Ukuqina ngaphansi kwengcindezi yangaphandle kungabangela ukuwohloka kwe-microscopic kwama-dendrite aqinisiwe ekuqaleni, kuthuthukise kakhulu umthamo wokuphakela isikhuphukeli kanye nokwenza ngcono ukushwabana kwangaphakathi kokusakazwa. Ngesikhathi esifanayo, ukucindezela kwandisa ukuncibilika kwegesi ku-alloy eqinile, okwenza kube nokwenzeka ukukhuphuka. Amabhamuza ancishisiwe.
Hlola ukuthi izixazululo zethu zingakuyisa kuphi.