Terminology Txog Tungsten Carbide

Nrog rau kev txhim kho thev naus laus zis, tib neeg tab tom nrhiav cov cuab yeej zoo dua, thiab cov khoom siv rau kev tsim kho thiab kev lag luam. Nyob rau hauv cov huab cua no, tungsten carbide siv lub luag haujlwm tseem ceeb hauv kev lag luam niaj hnub. Thiab nyob rau hauv tsab xov xwm no, ib co terminology txog tungsten carbide yuav qhia.

1. Cemented carbide

Cemented carbide yog hais txog sintered composite muaj li ntawm refractory hlau carbides thiab hlau binders. Ntawm cov hlau carbide, tungsten carbide, titanium carbide, tantalum carbide, thiab lwm yam yog cov tam sim no siv carbides. Thiab feem ntau siv hlau binder yog cobalt hmoov, thiab lwm yam hlau binders xws li npib tsib xee, thiab hlau, kuj yuav siv tau qee zaum.

2. Tungsten carbide

Tungsten carbide yog ib hom cemented carbide, uas muaj cov tungsten carbide hmoov thiab hlau binders. Nrog lub siab melting point, tungsten carbide khoom tsis tuaj yeem tsim ua lwm yam ntaub ntawv. Hmoov metallurgy yog ib txoj hauv kev rau kev tsim cov khoom tungsten carbide. Nrog tungsten atoms thiab carbon atoms, tungsten carbide cov khoom muaj ntau yam khoom zoo, ua rau lawv cov khoom siv nrov hauv kev lag luam niaj hnub.

3. Ceev ceev

Qhov ntom yog hais txog qhov sib piv ntawm qhov loj rau qhov ntim ntawm cov khoom. Nws lub ntim kuj muaj qhov ntim ntawm qhov pores hauv cov khoom.

Nyob rau hauv cov khoom tungsten carbide, cobalt los yog lwm yam hlau hais muaj nyob. Cov tungsten carbide qib YG8, uas muaj 8% cobalt, muaj qhov ceev ntawm 14.8g / cm3. Yog li ntawd, raws li cov ntsiab lus cobalt nyob rau hauv tungsten-cobalt alloy nce, lub zuag qhia tag nrho ceev yuav txo.

4. Hardness

Hardness hais txog lub peev xwm ntawm cov khoom siv los tiv thaiv cov yas deformation. Vickers hardness thiab Rockwell hardness feem ntau yog siv los ntsuas qhov hardness ntawm tungsten carbide khoom.

Vickers hardness yog dav siv thoob ntiaj teb. Qhov kev ntsuas hardness no yog hais txog tus nqi hardness tau los ntawm kev ntsuas qhov loj ntawm qhov indentation los ntawm kev siv lub pob zeb diamond los nkag rau saum npoo ntawm cov qauv hauv ib qho kev thauj khoom.

Rockwell hardness yog lwm txoj kev ntsuas hardness uas feem ntau siv. Nws ntsuas qhov hardness siv qhov tob tob ntawm tus qauv pob zeb diamond cone.

Ob txoj kev ntsuas Vickers hardness thiab Rockwell hardness ntsuas txoj kev tuaj yeem siv rau kev ntsuas qhov hardness ntawm cemented carbide, thiab ob qho tib si tuaj yeem hloov dua siab tshiab.

Lub hardness ntawm tungsten carbide yog li ntawm 85 HRA txog 90 HRA. Cov qib sib txawv ntawm tungsten carbide, YG8, muaj qhov nyuaj ntawm 89.5 HRA. Cov khoom lag luam tungsten carbide nrog lub siab tawv tuaj yeem tiv taus qhov cuam tshuam thiab hnav zoo dua, yog li nws tuaj yeem ua haujlwm ntev dua. Raws li ib tug bonder, tsawg cobalt ua rau zoo hardness. Thiab qis carbon yuav ua rau tungsten carbide nyuaj. Tab sis decarbonization tuaj yeem ua rau tungsten carbide yooj yim rau kev puas tsuaj. Feem ntau, nplua tungsten carbide yuav ua rau nws hardness.

5. Khoov lub zog

Cov qauv yog muab faib ua ib qho yooj yim txhawb nqa ntawm ob lub fulcrums, thiab ib qho load yog siv rau hauv nruab nrab kab ntawm ob lub fulcrums kom txog rau thaum cov qauv tawg. Tus nqi xam los ntawm cov qauv winding yog siv raws li qhov yuav tsum tau muaj rau kev tawg thiab qhov chaw hla ntawm cov qauv. Kuj hu ua transverse rupture zog los yog dabtsi yog khoov kuj.

Hauv WC-Co tungsten carbide, lub zog flexural nce nrog qhov nce ntawm cobalt cov ntsiab lus ntawm tungsten-cobalt alloy, tab sis thaum cov ntsiab lus cobalt ncav cuag li 15%, lub zog flexural mus txog qhov siab tshaj plaws, ces pib nqis.

Lub zog khoov yog ntsuas los ntawm qhov nruab nrab ntawm ntau qhov ntsuas. Tus nqi no kuj tseem yuav hloov pauv raws li qhov geometry ntawm cov qauv, qhov chaw saum npoo, kev ntxhov siab sab hauv, thiab qhov tsis xws luag ntawm cov khoom hloov. Yog li ntawd, lub zog flexural tsuas yog ntsuas lub zog, thiab tus nqi flexural zog tsis tuaj yeem sivua lub hauv paus rau kev xaiv cov khoom siv.

6. Transverse rupture zog

Transverse rupture lub zog yog lub peev xwm ntawm tungsten carbide los tiv thaiv dabtsi yog khoov. Tungsten carbide nrog zoo dua transverse rupture lub zog yog qhov nyuaj rau kev puas tsuaj nyob rau hauv kev cuam tshuam. Fine tungsten carbide muaj zog dua transverse rupture. Thiab thaum cov khoom ntawm tungsten carbide faib tusyees, lub transverse zoo dua, thiab tungsten carbide tsis yooj yim rau kev puas tsuaj. Lub zog transverse rupture ntawm YG8 tungsten carbide khoom yog nyob ib ncig ntawm 2200 MPa.

7. Kev quab yuam

Coercive quab yuam yog qhov seem sib nqus quab yuam ntsuas los ntawm kev sib nqus cov khoom sib nqus hauv cov cemented carbide mus rau lub xeev saturated thiab tom qab ntawd demagnetizing nws.

Muaj kev sib raug zoo ntawm qhov nruab nrab qhov loj me ntawm cov cemented carbide theem thiab lub zog quab yuam. Qhov finer qhov nruab nrab particle loj ntawm lub magnetized theem, qhov siab dua qhov coercive quab yuam nqi. Hauv chav kuaj, lub zog quab yuam yog kuaj los ntawm tus kws ntsuas kev quab yuam.

Cov no yog cov ntsiab lus ntawm tungsten carbide thiab nws cov khoom. Ntau lwm cov ntsiab lus tseem yuav raug qhia hauv cov lus hauv qab no.

Yog tias koj txaus siab rau cov khoom lag luam tungsten carbide thiab xav paub ntau ntxiv thiab cov ntsiab lus, koj tuaj yeem tiv tauj peb hauv xov tooj lossis xa ntawv ntawm sab laug, lossis xa US MAIL hauv qab ntawm nplooj ntawv.