Tungsten: Mweya weIndasitiri Yemauto

Kune indasitiri yemauto, tungsten uye alloys ayo anoshomeka zvakanyanya zviwanikwa zvehurongwa, izvo zvakanyanya kuona kusimba kweuto renyika.

Kugadzira zvombo zvemazuva ano, hazviparadzanisiki kubva pakugadzirwa kwesimbi.Pakugadzirisa simbi, mabhizinesi emauto anofanira kunge aine mapanga akanakisa uye mold.Pakati pezvinhu zvinozivikanwa zvesimbi, tungsten chete inogona kuita basa iri rinokosha.Kunyungudika kwayo kunodarika 3400°C.Simbi inorambisisa inozivikanwa, ine kuoma kwe7.5 (Mohs kuoma), ndeimwe yesimbi dzakaomarara.

Munhu wekutanga munyika kuunza tungsten mumunda wekucheka maturusi aive British Maschette.Muna 1864, Marchet akawedzera 5% ye tungsten kune simbi yekushandisa (kureva, simbi yekugadzira maturusi ekucheka, maturusi ekuyeresa, uye molds) kekutanga, uye maturusi akaguma akawedzera simbi yekucheka kukurumidza ne50%.Kubva ipapo, kumhanya kwekucheka kwetungsten-ine maturusi akawedzera geometrically.Semuenzaniso, kumhanya kwekucheka kwezvishandiso zvakagadzirwa netungsten carbide alloy sechinhu chikuru chinogona kusvika kupfuura 2000 m/min, inova yakapetwa ka267 yezvishandiso zvine tungsten muzana ramakore rechi 19..Pamusoro pekumhanya kukuru kwekucheka, kuoma kwe tungsten carbide alloy maturusi hakuzodzike kunyangwe pakupisa kwakanyanya kwe1000 ℃.Naizvozvo, maturusi e-carbide alloy akakodzera kwazvo kucheka alloy zvinhu izvo zvakaoma kugadzira nemamwe maturusi.

Iyo mold inodiwa pakugadzirisa simbi inogadzirwa zvakanyanya ne tungsten carbide ceramic simende carbide.Chakanakira ndechekuti yakasimba uye inogona kurohwa kanopfuura mamirioni matatu, nepo akajairwa alloy simbi molds anogona kungoroverwa kanopfuura ka50,000.Kwete izvozvo chete, mold yakagadzirwa ne tungsten carbide ceramic cemented carbide haisi nyore kupfeka, saka chigadzirwa chakaputirwa chakanyatsojeka.

Zvinogona kuoneka kuti tungsten ine simba rakasimba paindasitiri yekugadzira michina yenyika.Kana pasina tungsten, zvinotungamira mukuderera kwakanyanya mukugadzirwa kweindasitiri yekugadzira michina, uye panguva imwecheteyo, indasitiri yekugadzira michina ichave yakaoma.