Kodi waya wa tungsten amapangidwa bwanji?

Kuyenga tungsten kuchokera ku ore sikungatheke ndi kusungunula kwachikhalidwe chifukwa tungsten ili ndi malo osungunuka kwambiri kuposa chitsulo chilichonse. Tungsten amachotsedwa mu ore kudzera muzinthu zingapo zamakemikolo. Njira yeniyeni imasiyanasiyana ndi opanga ndi ore, koma ore amaphwanyidwa kenako n'kuwotcha ndi/kapena kutumizidwa kudzera mumitundu yosiyanasiyana yamankhwala, mpweya, ndi kuchapa kuti apeze ammonium paratungstate (APT). APT ikhoza kugulitsidwa malonda kapena kusinthidwa kukhala tungsten oxide. Tungsten oxide imatha kuwotcha mumlengalenga wa haidrojeni kuti ipange ufa wa tungsten wokhala ndi madzi ngati chopangira. Tungsten ufa ndiye poyambira zinthu za tungsten mphero, kuphatikiza waya.

Tsopano popeza tili ndi ufa wa tungsten, timapanga bwanji waya?

1. Kukakamiza

Tungsten ufa umasefedwa ndikusakanikirana. Binder ikhoza kuwonjezeredwa. Ndalama yokhazikika imayesedwa ndikuyikidwa mu nkhungu yachitsulo yomwe imayikidwa mu makina osindikizira. Ufawu umapangidwa kuti ukhale wogwirizana, koma wosalimba. Nkhungu imachotsedwa ndipo bar imachotsedwa. Chithunzi apa.

2. Ulaliki

Chotchinga chosalimba chimayikidwa mu bwato lachitsulo chokanizidwa ndikulowetsedwa mu ng'anjo yokhala ndi mpweya wa haidrojeni. Kutentha kwakukulu kumayamba kugwirizanitsa zinthuzo pamodzi. Zinthu zakuthupi ndi pafupifupi 60% - 70% ya kachulukidwe wathunthu, ndi kukula pang'ono kapena kulibe mbewu.

3. Full Sintering

Bar imayikidwa mu botolo lapadera loziziritsa madzi. Mphamvu yamagetsi idzadutsa pa bala. Kutentha kopangidwa ndi pano kumapangitsa kuti balalo likhale lolimba mpaka pafupifupi 85% mpaka 95% ya kachulukidwe chonse ndikuchepa ndi 15% kapena apo. Kuphatikiza apo, makhiristo a tungsten amayamba kupanga mkati mwa bar.

4. Kugwedezeka

Chophimba cha tungsten tsopano ndi cholimba, koma chophwanyika kwambiri kutentha kutentha. Itha kupangidwa kukhala yofewa kwambiri pokweza kutentha kwake kufika pakati pa 1200°C mpaka 1500°C. Pa kutentha uku, bala ikhoza kudutsa swager. Swager ndi chipangizo chomwe chimachepetsa kukula kwa ndodo podutsa pakufa yomwe imapangidwira kumenya ndodo pafupifupi 10,000 pa mphindi imodzi. Nthawi zambiri swager imachepetsa m'mimba mwake pafupifupi 12% pa pass. Kugwedeza kumatalikitsa makhiristo, ndikupanga mawonekedwe a ulusi. Ngakhale kuti izi ndi zofunika mu mankhwala omalizidwa chifukwa cha ductility ndi mphamvu, panthawiyi ndodo iyenera kuchepetsedwa ndi kutenthedwa. Kugwedeza kumapitirira mpaka ndodoyo ili pakati pa .25 ndi .10 mainchesi.

5. Kujambula

Waya wopindidwa wa mainchesi pafupifupi .10 tsopano atha kukokedwa kudzera mu ma dies kuti achepetse kukula kwake. Waya amathiridwa mafuta ndikukokedwa kudzera mu dies of tungsten carbide kapena diamondi. Kuchepetsa kwenikweni m'mimba mwake kumadalira momwe zimapangidwira komanso kugwiritsa ntchito komaliza kwa waya. Pamene waya amakokedwa, ulusi umatalikiranso ndipo mphamvu yolimba imawonjezeka. Pazigawo zina, pangakhale kofunikira kuti anneal waya kuti alole kukonzanso kwina. Waya amatha kujambulidwa bwino ngati mainchesi .0005 m'mimba mwake.