Kev soj ntsuam ntawm Core Performance Parameters rau Cemented Carbide Chisels

Cov cemented carbide chisel yog lub plawv ntawm cov cuab yeej pob zeb niaj hnub no, thiab nws qhov kev ua tau zoo ncaj qha txiav txim siab drilling efficiency thiab lub neej cuab yeej. Txhawm rau xaiv thiab siv cov chisels, nws yog ib qho tseem ceeb kom nkag siab tob txog cov kev ua haujlwm tseem ceeb hauv qab no.

1. Hardness: Qhov taw qhia tseem ceeb ntawm kev tiv thaiv kev nkag mus thiab hnav

Hardness yog ib qho kev ntsuas uas ntsuas lub peev xwm ntawm cov cemented carbide chisel saum npoo los tiv thaiv kev nkag los yog khawb los ntawm cov khoom txawv teb chaws, feem ntau hais hauv Rockwell Hardness (HRA). Nws yog feem ntau txiav txim siab los ntawm hardness, grain loj, thiab faib ntawm tungsten carbide (WC) nyob rau hauv cov khoom. High hardness txhais tau tias cov chisel tuaj yeem ua tau zoo dua tom rau hauv cov pob zeb tawv thiab tiv thaiv kev hnav los ntawm cov pob zeb txiav, yog li tuav lub ntsej muag ntse thiab txuas lub neej kev pab cuam. Nyob rau hauv cov pob zeb abrasive heev, hardness yog thawj qhov kev xaiv.

2. Toughness: Qhov tseem ceeb lav tiv thaiv kev cuam tshuam thiab tawg

Toughness sawv cev rau cov khoom muaj peev xwm nqus tau lub zog yam tsis muaj kev tawg. Drilling yog ib tug high-frequency, high-stress tej yam kev mob. Yog hais tias lub chisel tsis txaus toughness, nws yog heev yooj yim mus chipping, cracking, los yog ua tsis tiav. Toughness feem ntau nyob ntawm cov ntsiab lus thiab kev faib tawm ntawm cobalt (Co) binder theem. Feem ntau, cov ntsiab lus cobalt ntau dua ua rau muaj zog dua. Nyob rau hauv pob zeb tawg thiab heterogeneous formations, siab toughness yog lub lifeline tiv thaiv ntxov chisel tsis ua hauj lwm.

3. Flexural Strength: Qhov ntsuas ntawm Load-bearing Capacity

Flexural lub zog yog qhov siab tshaj plaws ntawm cov khoom siv tuaj yeem tiv taus ua ntej tawg nyob rau hauv ib qho dabtsi yog khoov load. Nws qhia tau meej txog "lub zog" thiab "tawv" ntawm cov cemented carbide thiab ncaj qha cuam tshuam rau lub chisel lub peev xwm los tiv thaiv kev puas tsuaj nyob rau hauv qhov cuam tshuam loj heev thiab lub sijhawm khoov nyuaj. Lub chisel nrog lub zog flexural siab zoo li muaj lub zog "caj qaum," ua kom nws ruaj khov rau ntau yam kev ntxhov siab uas tau ntsib hauv kev ua haujlwm hnyav thiab ua kom muaj kev nyab xeeb thiab kev ntseeg tau.

4. Fracture Toughness: Kev Tiv Thaiv Kev Tshaj Tawm Txog Kev Tshaj Tawm

Fracture toughness yog ib qho kev qhia ntau tshaj ntawm toughness, tshwj xeeb yog xa mus rau lub peev xwm ntawm cov khoom muaj micro-cracks los tiv thaiv kev tawg tsis ruaj khov. Hauv kev tsim cov tswv yim, microscopic defects nyob rau hauv cov khoom yog inevitable. High fracture toughness txhais tau hais tias txawm tias micro-cracks tsim, lawv tsis zoo li yuav nthuav tawm sai sai thiab ua rau tsis ua tiav. Qhov kev ntsuas no yog qhov tseem ceeb rau kev ua kom cov cuab yeej muaj kev nyab xeeb nyob rau hauv cov xwm txheej hnyav uas cuam tshuam nrog kev thauj khoom eccentric (piv txwv li, me ntsis slippage).

Cov ntsiab lus: Qhov Sib npaug thiab sib koom ua ke ntawm cov khoom

Nws yog ib qho tseem ceeb uas yuav tsum tau hais tias cov kev ntsuas tseem ceeb no tsis muaj nyob hauv kev sib cais tab sis muaj kev cuam tshuam thiab feem ntau cuam tshuam nrog kev lag luam tawm. Kev nrhiav kev nyuaj siab heev feem ntau tuaj ntawm tus nqi ntawm kev txo qis thiab lub zog, thiab rov ua dua. Piv txwv li, chisels nrog cov nplej zoo thiab cov ntsiab lus cobalt uas tsis tshua muaj siab hardness thiab hnav tsis kam tab sis kuj qis dua toughness. Conversely, chisels nrog coarse nplej thiab cobalt cov ntsiab lus siab zoo dua toughness thiab lub zog tab sis me ntsis qis hardness.

Yog li ntawd, xaiv cov cemented carbide chisel tsis yog hais txog kev nrhiav qhov kawg ntawm ib qho kev ntsuas. Hloov chaw, nws yog hais txog kev nrhiav qhov zoo tshaj qhov sib npaug ntawm qhov hardness, toughness, thiab lub zog raws li cov pob zeb tsim tshwj xeeb (xws li, txawm tias lawv nyuaj thiab tsis zoo lossis tawg thiab nyuaj). Txoj kev no ua tiav lub neej ua haujlwm ntev tshaj plaws thiab ua haujlwm siab tshaj plaws.