Thermal nyhuv ntawm PDC Cutter

Nws tau paub tias PDC cov khoom muaj txiaj ntsig ntau dua li cov menyuam lub khob hliav qab, tab sis qhov no yog ib txwm pom thaum lub pob zeb muag muag. Qhov no tuaj yeem yog vim qhov tseeb tias 50% ntawm lub zog rau qhov drilling tuaj yeem raug tshem tawm los ntawm lub tshuab txiav. Ntxiv nrog rau qhov hnav uas yog tshwm sim los ntawm kev sib cuam tshuam ntawm pob zeb thiab cutter, thermal teebmeem tuaj yeem ua kom tus nqi ntawm lub cutter yuav hnav.

Yog tias cov teebmeem thermal raug tsis saib xyuas, nws tuaj yeem ua rau me ntsis hnav tsuas yog kev ua haujlwm ntawm kev thauj khoom mus rau me ntsis thiab qhov kev ncua deb mus rau thaum sib cuag nrog pob zeb. Raws li peb paub, qhov no tsis yog li ntawd. Cov teebmeem thermal muaj feem cuam tshuam rau tus nqi ntawm cov khoom hnav.

Nws tau hais tias abrasive hnav ntawm cov hlau muaj feem xyuam rau qhov sib piv hardness ntawm cov khoom abrasive thiab hlau. Rau cov mos abrasives nrog qhov sib piv tsawg dua 1.2, qhov hnav piv yog tsawg. Raws li qhov piv ntawm cov txheeb ze hardness ntau tshaj 1.2, tus hnav tus nqi nce considerably.

Thaum saib quartz, uas yog nyob qhov twg los ntawm 20-40% ntawm ntau pob zeb formations, lub hardness ranges ntawm 9.8-11.3Gpa thiab tungsten carbide yog 10-15GPa. Cov kab no ua rau muaj qhov sib piv ntawm 0.65 mus rau 1.13, faib cov kev sib raug zoo no raws li kev sib txhuam mos. Thaum tungsten carbide siv rau kev txiav pob zeb ntawm lossis qis dua 350 oC, lawv tau ntsib tus nqi hnav uas zoo ib yam li cov mos abrasive raws li xav tau.

Thaum qhov kub siab tshaj 350 oC, hnav yog nrawm dua thiab koom nrog zoo dua nrog cov tawv tawv tawv. Los ntawm qhov no, nws tau xaus lus tias hnav nce los ntawm thermal nyhuv. Txhawm rau txo PDC hnav, nws yuav ua tau zoo los tswj qhov kub ntawm cov cutters.

Thaum txoj kev tshawb fawb txog kev cuam tshuam thermal ntawm PDC hnav pib, 750oC yog qhov siab tshaj plaws ua haujlwm kub. Qhov ntsuas kub no tau tsim, vim tias qis dua qhov ntsuas kub microchipping yog qhov hnav pom ntawm lub tshuab txiav.

Tshaj li 750 ℃ ​​tag nrho pob zeb diamond nplej tau raug tshem tawm ntawm cov pob zeb diamond txheej thiab thaum ncav cuag qhov kub siab tshaj 950 ℃ tungsten carbide stud tau ntsib cov yas deformation. Kev nkag siab ntawm cov cutters thiab PDC me ntsis geometry yuav tsum yog qhov tseeb los muab cov ntaub ntawv txaus thaum xaiv me ntsis.

Zzbetter muab qhov zoo tshaj plaws PDC cutter nrog zoo thermal stability. Peb pab neeg ua haujlwm nyuaj heev los tsim cov khoom zoo. Peb tos ntsoov yuav pab koj ua lag luam.

Yog tias koj txaus siab rau PDC cutters 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.