Tungsten carbide. The thepa mmeleng, toxicity, tšebeliso ea

Tungsten carbide (lebitso la e mong - tungsten monocarbide) - k'hemik'hale komponeng ea tungsten, carbon, 'me letsopa. ntho ena ke e 'ngoe ea matla ka ho fetisisa tsa letsopa tsohle tsejoa ka thatafala tšoana le taemane: HRC ke ho pota 90 diyuniti ka Mohs Mohs ae phethang sebaka borobong. E mong karolo e ntle tsa tungsten carbide ke e ntle ba roale hanyetsa, phahameng qhibiliha mocheso le ho hanyetsa babatsehang ho ho kena moea. boitsebiso boo hona joale ho pharaletseng a sebelisa ho bōpa e itšeha sesebelisoa liboto le lihlomo tsa phunya likhetla.

thepa ya moaho wa carbide tungsten

1. Tlas'a maemo a tloaelehileng, e granular tungsten carbide phofo ke bohlooho metallic Sheen.

2. qhibilihang ka har'a metsi.

3. Rockwell thatafala ya diyuniti ho tloha 87 ho ea 92.

4. qhibiliha mocheso oa carbide tungsten ke likhato 2.870.

5. The segokanyipalo sa e 15,8 g, / santimetr³.

6. The modulus rekere e 450 ÷ 650 GPa

7. Liphello tsa mocheso lekanang 8,4 +/- 0,2 kkalory / Mol

8. tlhokeho ea melao tekanyetso e 8,5 +/- 1.5 lik'hilojule / (mole ka lengolo la).

9. mocheso itseng ka mocheso lekana le likhato 293 ke 8,53 lik'hilojule / (mole ka lengolo la).

10. Thermal conductivity ka mocheso ambient tsa likhato 25 ke 0,07 Cal / (cm, / s / ° C).

11. The mogote tjaleho coefficient ke 3,84 (3,9) * 106 1 deg.

12. resistivity motlakase ka mocheso oa likhato tse 200 ke 19,2 +/- 0,3 microohm / cm,.

13. The conductivity ea motlakase ea itseng ea ke 52200 Ohm-1 * cm,-1.

Sebopeho tungsten carbide

The tsejoang kateng hona joale mefuta e 'meli ea WC - β-WC phahameng-dikhubu le hexagonal α-WC.

Tshebediso ya carbide tungsten

- ka bonono ho tlhahisong ea lisebelisoa tse lokela ho ba thatafala phahameng le e ntle ts'enyeho hanyetsa;

- bakeng sa qhoaele manganga surfacing ea likarolong tse sa tšoaneng ho sebetsa ka qhoaele boima ho karolelano mejaro makala;

- ho pharaletseng sebelisoa ka tlhahisong ea lisebelisoa tse sa tšoaneng ho itšeha, e-shoa likoetlisong, ho sila mabili, tirila likotoana bakeng sa ho cheka, ho sila le lisebelisoa tse ling tse ho itšeha;

- litsenyehelo tsa ho ba tungsten dumella ho sebelisa lits'epe tse kopantsoeng masimong a sa tšoaneng (e entsoeng ka lits'epe tse kopantsoeng ka thata, e tsejoang tlas'a lebitso "Tlhōlo" le "Relit", ka 90%);

- sebediswa ka ho nyanyatsoa mogote le surfacing ka mokgwa wa e phofo tse bonahalang bakeng sa ho hlahisa abrasion manganga coatings;

- ke e 'ngoe ea thepa e ka sebelisoa ho nka sebaka chromium plating thulaganyou e electroplating phahameng-lebelo lelakabe fafatsa;

- carbide jwale tungsten ke 'muso o hlaheletseng ka tlhahisong ea projectiles le lihlomo tsa phunya ka likulo cores (Leha ho le joalo, ho na le tšekamelo ea displacement butle-butle tungsten carbide Du) ;

- ka tlhahiso ea lifaha marang of 1 limilimithara bakeng sa masakeng ballpoint (bentsa o etsoa ka sethusathuto khethehileng bakeng sa matsatsi a 'maloa, a sebelisa e nyenyane ea daemane ho peista);

- ka tlhahisong ea lipetja tsa litebelo phahameng sechabeng Switzerland, ho roala mabenyane a - masale, lipetja le pendants, eo ka lebaka la ho apara liaparo tsa ho hanyetsa ea carbide tungsten Guaranteed benya ka ho sa feleng;

- sebelisoa e le microcyteme bakeng sa polatinamo sethothetsi;

- tungsten carbide sebelisoa ho bōpa qetellong litiiso shafts ba bang mekgwa maemong moo tikoloho e na le e tiileng e qamathelang phahameng le / kapa abrasiveness.

Tungsten carbide Toxicity

boitsebiso boo ke lik'hemik'hale inert. Ka lebaka lena, ka maemo a tloaelehileng, ha ho eachother le kotsi efe kapa efe ho batho. The lethal dose bolaeang e sa hlalosoa ka hore batho kapa liphoofolo. Lithuto tse 'nileng tsa tšoareloa le Dresden Technical le Univesithing ea Leipzig, o ile a bontša hore tse nyanyalitsoeng tungsten carbide ka phunyeletse ka lintho tse phelang. Moo likaroloana motle ke bao e seng chefo, empa ha ho kopantswe le dintho tse itseng ba etsa le kotsi bakeng sa wellbeing ea lisele. Ha sekoloto sa fumana cobalt lerōle le re nahana ka ntho e 'meleng ka ba le fibrosis.