Ukuphosa iziphene eziqhelekileyo

Iintlobo ezintandathu eziqhelekileyo iziphene'izizathu kunye nokuthintela indlela, hayi ukuqokelelaiya kubailahleko yakho! (Icandelo loku-1)

Inkqubo yokuvelisa, izinto ezinempembelelo kunye nesiphene sokuphosa okanye ukusilela akunakuphepheka, okukholisa ukuzisa ilahleko enkulu kwishishini. Namhlanje, ndiza kwazisa iindidi ezintandathu zeziphene eziqhelekileyo kunye nesisombululo, ngethemba lokuba luncedo kwishishini lesiseko.

1I-Porosity (amaqamza, umngxuma ominxayo, ipokotho)

1)Iimbonakalo:I-Porosity ikhona ngaphakathi kwendawo yokuphosa okanye imingxunya, ingqukuva, i-oval okanye imilo engaqhelekanga, ngamanye amaxesha iipores ezininzi zenza ubunzima bomoya phantsi kwesikhumba ngokubanzi bumile okwepere. Imingxunya umngxuma imilo engaqhelekanga kunye nomhlaba orhabaxa. Ipokotho ngumphezulu ogobileyo kumphezulu ogudileyo. I-pore ekhanyayo ibonwa ngokuhlola, i-pinhole inokufumaneka emva kokucubungula ngomatshini.
2)Oonobangela:
l Ubushushu bokufudumala kweMold buphantsi kakhulu, intsimbi engamanzi idlula kwinkqubo yokugalela ipholisa ngokukhawuleza kakhulu.
l Uyilo olubi lwe-mold exhaust, iigesi azikwazi ukukhutshelwa ngaphandle kokuphazamiseka.
l Ipeyinti ayilunganga, ukukhuphela okulambathayo ngokwako, kubandakanywa nokuguquguquka okanye iigesi zokubola.
l Imingxunya engaphezulu komngxuma wokungunda, emva kokuba isinyithi esilulwelo sigalelwa emingxunyeni, ukwanda okukhawulezileyo kwerhasi ecinezelweyo yesinyithi solwelo ukwenza umngxuma.
l Umphezulu womgodi wokungunda kwaye awukacocwa.
l Izinto eziluhlaza (ii-cores) zigcinwe ngokungafanelekanga, ngaphandle kokufudumala ngaphambi kokusetyenziswa.
l I-arhente yokunciphisa kakubi, okanye idosi engafanelekanga okanye ukusebenza ngokungafanelekanga.
3) Ukuthintela njani:
l ukubumba ukutshisa ngokupheleleyo, ukugubungela (igraphite) ubungakanani besuntswana akufanele bube buncinci kwaye bube nokuphefumla okungcono.
l Sebenzisa indlela yokuphosa ethambekileyo.
l Izinto eziluhlaza kufuneka zigcinwe kwindawo eyomileyo kunye ne-ventilating, xa isetyenziselwa ukushisa kwangaphambili.
l Khetha i-deoxidation isiphumo esihle sokunciphisa (i-magnesium).
l Ubushushu bokugalela akufanele bube phezulu kakhulu.

2 Ukucutheka

1) Iimpawu:I-shrinkage ngumngxuma orhabaxa ongaphezulu okhoyo kumphezulu okanye ngaphakathi kokusalwa. Ukucutheka kancinci kuncinci okuthe saa okuncinci kweenkozo ezirhabaxa, okuhlala kusenzeka ekujuleni kufutshane nembaleki, iingcambu zesikhuphukeli, iindawo ezishinyeneyo, ubukhulu bogqithiso lodonga kunye nenqwelomoya enkulu.

2)Izizathu:
l Ubushushu bokusebenza komngundo abuzange bufezekise iimfuno zokuqiniswa kolwalathiso.
l Ukukhethwa kokutya okungafanelekanga, ubukhulu bengubo abulawulwa kwiindawo ezahlukeneyo.
l Isikhundla sokuphosa kwi-mold design ayifanelekanga.
l Uyilo lokugalela isikhuphukeli aluphumelelanga ukuphumeza indima epheleleyo.
l Ubushushu bokugalela buphantsi kakhulu okanye buphezulu kakhulu.

3)Ukuthintela njani:
l Ukunyusa ubushushu bokubumba.
l Ukulungelelanisa ubukhulu bepeyinti kunye ne-coating etshizwe ngokufanayo.
l Ukufudumeza umngundo wendawo okanye ukugquma kwendawo usebenzisa izinto zokugquma i-thermal.
l Seta indawo eshushu ibhloko yobhedu kwaye upholise indawo yasekuhlaleni.
l Ukuyila irediyetha kwisingundo, okanye ngesantya sokupholisa esikhawulezileyo kwiindawo zasekuhlaleni ezifana namanzi, okanye ukutshiza amanzi ngaphandle komngundo.
l Ngeqhekeza eliqhaqhaqhasayo lokupholisa, elibekwe ngokuhlukileyo ngaphakathi komngxuma, ukuze kuthintelwe xa imveliso iqhubeka, yona ngokwayo ukupholisa akwanelanga.
l Ukuyila isixhobo soxinzelelo kwisinyusi sokungunda.
l Ukuyila inkqubo yokugawula ngokuchanekileyo, ukukhetha ubushushu obufanelekileyo bokugalela.

Imingxunya emi-3 ye-slag (i-flux slag kunye ne-metal oxide slag)

1) Iimpawu:Umngxuma we-slag ugqamile okanye umnyama kwimingxuma yokuphosa, yonke okanye inxalenye yomgodi yazaliswa yi-slag. Ubume obungaqhelekanga, indawo encinci ye-flux slag ayifumaneki lula, emva kokususwa kwe-slag, emva koko ibonise umngxuma ogudileyo. Jikelele isasazwe kwindawo engezantsi yendawo yokuphosa, kufuphi nembaleki okanye ikona yokuphosa, i-oxide slag isasazwa kwisango le-mesh kufuphi nomphezulu, ngamanye amaxesha i-flakes okanye ifu elingaqhelekanga elinesandwich eshwabeneyo okanye yeshiti, okanye i-flocculent castings, idla ngokuphuka kwisandwich kunye ne-oxide. Sesinye sezizathu ezisisiseko zokuqhekeka kweentanda.

2)Unobangela:Umngxuma we-slag ubangelwa ikakhulu kwi-alloy smelting kunye nenkqubo yokuphosa (kubandakanywa noyilo olungalunganga lwe-gating system), isikhunta ngokwaso asibangeli umngxuma we-slag, kwaye ukusebenzisa i-metal mold yenye yezona ndlela zisebenzayo zokuphepha i-slag.

3) Ukuthintela njani:
l Ukuyila inkqubo yokugawula ngokuchanekileyo, okanye sebenzisa isihluzo sefayibha ephosiweyo.
l Ukusebenzisa indlela yokugalela ethambekele.
l Ukukhetha i-arhente yokudibanisa kunye nokulawula ngokungqongqo umgangatho.

Ezinye iziphene zokuphosa ezintathu ziya kuqhubeka kwiveki ezayo. Enkosi.

Inkampani: Dinsen Impex Corp
Iwebhusayithi:www.dinsenmetal.com