Luveliswa njani ucingo lwetungsten?

Ukucokisa i-tungsten esuka kwintsimbi ekrwada ayinakwenziwa ngokunyibilikiswa kwemveli kuba itungsten ineyona ndawo iphezulu yokunyibilika kuyo nayiphi na intsimbi. I-Tungsten itsalwa kwintsimbi ekrwada ngothotho lweekhemikhali. Inkqubo echanekileyo iyahluka ngokomenzi kunye nokwakheka kwentsimbi, kodwa intsimbi ekrwada iyatyunyuzwa emva koko yosiwe kunye/okanye ithunyelwe ngeendlela ezahlukeneyo zokusabela kweekhemikhali, imvula, kunye nokuhlamba ukufumana i-ammonium paratungstate (APT). I-APT inokuthengiswa ngokurhweba okanye iqhubekele phambili kwi-tungsten oxide. I-Tungsten oxide inokojwa kwi-atmosphere ye-hydrogen ukwenza umgubo we-tungsten ococekileyo ngamanzi njengemveliso ephumayo. I-tungsten powder yindawo yokuqala yeemveliso ze-tungsten zokugaya, kuquka ucingo.

Ngoku ukuba sinomgubo ococekileyo we-tungsten, silwenza njani ucingo?

1. Ukucinezela

I-tungsten powder iyahluzwa kwaye ixutywe. Isibophelelo singongezwa. Isixa esimiselweyo silinganiswe kwaye silayishwe kwi-mold yensimbi elayishwe kumshicileli. Umgubo udityaniswe ube yibha edibeneyo, kodwa eethe-ethe. Umngundo uyahlulwa kwaye ibha isusiwe. Umfanekiso apha.

2. Ukunikela intetho

Ibha ebuthathaka ifakwe kwisikhephe sesinyithi esichasayo kwaye ilayishwe kwiziko elinomoya we-hydrogen. Ubushushu obuphezulu buqala ukudibanisa izinto kunye. Izinto eziphathekayo zimalunga ne-60% - 70% yoxinaniso olupheleleyo, kunye nokukhula okuncinci okanye akukho ngqolowa.

3. Sintering ngokupheleleyo

Ibha ilayishwa kwibhotile ekhethekileyo yokunyanga amanzi apholileyo. Umsinga wombane uya kudlula kwibar. Ubushushu obuveliswa yilo lwangoku buya kubangela ukuba ibha igxininise malunga ne-85% ukuya kwi-95% yoxinaniso olupheleleyo kwaye iyancipha nge-15% okanye kunjalo. Ukongeza, iikristale ze-tungsten ziqala ukwenza ngaphakathi kwebar.

4. Ukugungqa

Ibha ye-tungsten ngoku yomelele, kodwa i-brittle kakhulu kubushushu begumbi. Ingenziwa ithambileyo ngakumbi ngokunyusa ubushushu bayo bube phakathi kwe-1200°C ukuya kwi-1500°C. Kulo bushushu, ibha inokugqithiswa kwi-swager. I-swager sisixhobo esinciphisa ububanzi bentonga ngokuyidlula kwidayisi esenzelwe ukubethelela intonga malunga nemivumbo engama-10 000 ngomzuzu. Ngokuqhelekileyo i-swager iyakunciphisa ububanzi malunga ne-12% ngokupasa. Ukujija kwandisa iikristale, kudala isakhiwo se-fibrous. Nangona oku kunqweneleka kwimveliso egqityiweyo ye-ductility kunye namandla, ngeli xesha intonga kufuneka igxininise ngokuphindaphindiweyo. I-Swaging iyaqhubeka de intonga ibe phakathi kwe-.25 kunye ne-.10 intshi.

5. Umzobo

Ucingo oluswajiweyo olumalunga ne-intshi ezili-10 ngoku lunokutsalwa ngokufa ukuze kucuthwe ubukhulu. Ucingo luyathanjiswa kwaye lutsalwe ngokufa kwetungsten carbide okanye idayimane. Ukunciphisa ngokuthe ngqo ububanzi kuxhomekeke kwikhemistri echanekileyo kunye nokusetyenziswa kokugqibela kocingo. Njengoko ucingo lutsalwa, iintsinga ziphinda zibande kwaye amandla aqinile ayanda. Kumanqanaba athile, kunokuba yimfuneko ukukhupha ucingo ukuvumela ukuqhubekeka. Ucingo lunokuzotywa kakuhle njenge-.0005 intshi ubukhulu.