Tungsten puag ncig baryog ib tug pas nrig ua los ntawm tungsten hlau. Cov hlau tsis tshua muaj feem ntau yog xa mus rau cov hlau uas tsis tshua muaj ntau los yog sib cais hauv qhov xwm txheej. Tungsten yog cov khoom siv dav dav, uas muaj nyob hauv yuav luag txhua hom pob zeb, tab sis cov ntsiab lus tsawg. Cov ntsiab lus ntawm tungsten hauv lub ntiaj teb crust yog 0.001%, thiab cov ntsiab lus nruab nrab hauv granite yog 1.5 × 10-6. Cov yam ntxwv no ua rau nws cov extraction nyuaj heev. Feem ntau, nws tsuas tuaj yeem sib cais thiab muab rho tawm los ntawm cov organic solvent extraction thiab ion pauv. Nrog rau kev nce qib ntawm kev tshawb fawb thiab thev naus laus zis, kev txhim kho ntawm metallurgical thev naus laus zis, khoom siv thiab kev tsom xam, thiab kev tshawb nrhiav thev naus laus zis, thiab kev nthuav dav ntawm cov nplais ntawm cov hlau tsis tshua muaj, qhov purity ntawm tungsten tau txhim kho tsis tu ncua, nws cov kev ua tau zoo tsis tu ncua, thiab nws ntau yam tau nce ntxiv, yog li nthuav dav daim ntawv thov ntawm tungsten. kuv lub teb chaws yog nplua nuj nyob rau hauv tungsten ore kev pab cuam, thiab nws cov zis thiab tag nrho exports ntawm tungsten nyob rau hauv lub ntiaj teb no.
Tungsten yog ib hom hlau zoo. Raws li peb txhua tus paub, tsis tshua muaj hlau yog cov khoom siv tseem ceeb hauv lub tebchaws, thiab tungsten yog cov hlau tsis tshua muaj nrog kev siv tseem ceeb heev. Nws yog ib qho tseem ceeb ntawm cov khoom siv high-tech niaj hnub no. Cov khoom siv hluav taws xob kho qhov muag, cov khoom siv tshwj xeeb, cov khoom siv ua haujlwm tshiab, thiab cov khoom siv organometallic txhua tus yuav tsum tau siv tungsten nrog cov khoom tshwj xeeb. Txawm hais tias qhov ntau npaum li cas tsis loj, nws tseem ceeb heev thiab indispensable. Yog li ntawd, nws yog dav siv nyob rau hauv niaj hnub kev sib txuas lus technology, electronics computer, aerospace txoj kev loj hlob, tshuaj thiab kev noj qab haus huv, photosensitive cov ntaub ntawv, optoelectronic cov ntaub ntawv, lub zog cov ntaub ntawv, catalyst cov ntaub ntawv, thiab lwm yam.
Tungsten puag ncig bar, tseem hu ua tungsten pas nrig, yog cov khoom siv hlau hnyav thiab ruaj khov. Nov yog nws cov nta thiab qhov zoo:
1. Qhov zoo
- Lub zog siab: Vim tias lub siab ntom ntom thiab siab hardness ntawm tungsten pas, nws muaj siab tsis kam los khoov thiab siab;
- High hnav tsis kam: tungsten rods tuaj yeem tiv taus kev kub ceev lossis cov khoom hnyav uas tsis muaj kev puas tsuaj;
- Zoo hluav taws xob thiab thermal conductivity: Tungsten rods muaj hluav taws xob zoo thiab thermal conductivity nyob rau hauv high-temperature ib puag ncig, yog li ntawd lawv yuav siv tau los tsim ib co high-temperature hluav taws xob Cheebtsam;
- Yooj yim ntawm kev ua: Txawm hais tias tungsten pas nrig yog ib qho nyuaj heev, nws kuj yog ib qho yooj yim rau cov txheej txheem hauv qee cov txheej txheem ua, thiab cov duab thiab qhov ntau thiab tsawg tuaj yeem tsim tau.
2. Lub cev thiab tshuaj muaj zog
Tungsten yog cov hlau tsis tshua muaj siab melting point, uas tuaj yeem ua rau lub siab kub hardness ntawm cov hlau. Tungsten yog cov hlau dawb-dawb uas zoo li hlau. Tungsten muaj qhov siab melting point, tsawg vapor siab, thiab tsawg evaporation tus nqi. Cov yam ntxwv ntawm tungsten yog ruaj khov heev. Nws tsis hnov mob nrog huab cua thiab dej ntawm chav tsev kub. Yog tsis muaj cua sov, ib qho concentration ntawm hydrochloric acid, sulfuric acid, nitric acid, hydrofluoric acid, thiab aqua regia tsis cuam tshuam rau tungsten. Thaum qhov kub nce mus txog 80 degree -100 degree, ntawm cov acids uas tau hais los saum toj no, tshwj tsis yog hydrofluoric acid, lwm cov kua qaub muaj zog ntawm tungsten. Nyob rau hauv chav tsev kub, tungsten tuaj yeem yaj sai sai hauv cov kua qaub sib xyaw ntawm hydrofluoric acid thiab concentrated nitric acid, tab sis nws tsis ua haujlwm hauv cov tshuaj alkaline. Nyob rau hauv lub xub ntiag ntawm huab cua, molten alkali tuaj yeem oxidize tungsten rau tungstate, thiab nyob rau hauv lub xub ntiag ntawm oxidants (NaNO3, NaNO2, KClO3, PbO2), cov tshuaj tiv thaiv rau daim ntawv tungstate yog nruj dua. Thaum kub kub, nws tuaj yeem ua ke nrog oxygen, fluorine, chlorine, bromine, iodine, carbon, nitrogen, sulfur, thiab lwm yam, tab sis tsis yog hydrogen.
|
Tshuab dhos |
Txoj kab uas hla |
Qhov siab kam rau ua% |
Max ntev, mm |
|
Forging,
Rotary swaging |
1.6-20 |
±0.1 |
2000 |
|
20-30 |
±0.1 |
1200 |
|
|
30-60 |
±0.1 |
1000 |
|
|
60-70 |
±0.2 |
800 |
3. Tshuaj muaj pes tsawg leeg
|
Qib |
Cov ntsiab lus tungsten |
Cov ntsiab lus ntawm impurity element |
|
|
Tag nrho cov ntsiab lus |
Txhua yam ntsiab lus |
||
|
W1 |
99.95% min |
0.05% max |
0.01% max |
|
W2 |
99.92% min |
0.08% max |
0.01% max |
|
AW 1, WAL2 |
99.95% min |
0.05% max |
0.01% max |
4. Daim ntawv thov teb
Tungsten puag ncig tuav yog siv dav hauv ntau daim ntawv thov vim lawv qhov siab melting point, ntom, thiab hardness. Hauv qab no yog cov kev siv tseem ceeb ntawm tungsten tuav.
- Electrodes: Nws feem ntau yog siv los ua igniters, TIG vuam, thiab siv hluav taws xob siv hluav taws xob hluav taws xob.
- Cov cuab yeej: Nws tuaj yeem ua tiav los ua cov cuab yeej siv siab ceev tungsten steel rau kev ua ntau yam hlau.
- Kev lag luam Nuclear: Vim lub siab ceev thiab melting point ntawm tungsten tuav yog siv nyob rau hauv nuclear roj tswj rods thiab reactor inserts ntawm nuclear reactors.
- Electronics: Nws tuaj yeem siv rau hauv cov tshuaj tiv thaiv fusion thiab lub zog hluav taws xob hluav taws xob siab.
- Tshuaj: Txhaj tshuaj tiv thaiv kab mob isotopes rau hauv tungsten rods, ua nws txoj kev kho mob qog.
Hauv cov ntsiab lus, tungsten tuav tau siv ntau yam kev siv, los ntawm kev tsim cov cuab yeej siv rau hauv high-tech nuclear reactors, electronics, thiab kev kho mob.
Cim npe nrov: Tuam Tshoj tungsten puag ncig bar manufacturers, lwm tus neeg
