Kodi mumadziwa bwanji za PDC cutter?

Za PDC (Polycrystalline Diamond Compact) Wodula

PDC (Polycrystalline Diamond Compact) Wodula ndi mtundu wovuta kwambirizinthu zomwe zimagwirizanitsa diamondi ya polycrystalline ndi tungsten carbide gawo lapansi pa kutentha kwambiri komanso kuthamanga.

Kupangidwa kwa chodula cha PDC kunalimbikitsachodulira chokhazikikapatsogolo mu makampani kubowola, ndipo lingaliro yomweyo anakhala otchuka. Kuyambira kukumeta ubweyazochita za odula a PDC ndizothandiza kwambiri kuposa kuphwanya kwa batani kapena kachidutswa ka mano, odula osasunthika- pang'onoakufunika kwambiri.

Mu 1982, zobowola za PDC zinali 2% yokha ya mapazi onse obowoledwa. Mu 2010, 65% ya malo onse obowoledwa adapangidwa ndi PDC.

Momwe PDC Cutters amapangidwira? 

PDC Cutters amapangidwa kuchokera ku tungsten carbide substrate ndi grit ya diamondi yopanga. Amapangidwa pogwiritsa ntchito kuphatikizika kwa kutentha kwambiri komanso kuthamanga kwambiri ndi chothandizira cha cobalt alloy kuti athandizire mgwirizano wa diamondi ndi carbide panthawi ya sintering. Panthawi yozizirira, tungsten carbide imachepa mofulumira kuwirikiza 2.5 kuposa diamondi, yomwe imaphatikiza Diamondi ndi Tungsten Carbide pamodzi kenako ndikupanga PDC Cutter.

Makhalidwe ndi Ntchito

Popeza PDC Cutters imakhala ndi grit ya diamondi ndi tungsten carbide gawo lapansi, imaphatikiza ubwino wa diamondi ndi tungsten carbide.： 

1. High abrasion resistant

2. Hkugonjetsedwa ndi mphamvu

3. Hmalo otentha

Tsopano PDC Cutters amagwiritsidwa ntchito kwambiri pobowola mafuta, gasi ndi kufufuza zachilengedwe, migodi ya malasha, ndi ntchito zina zambiri zobowola ndi mphero, zida monga PDC Drill Bits, monga Steel PDC Drill Bits & Matrix PDC Drill Bits pobowola mafuta ndi Tri-cone PDC Drill Bits kwa migodi ya malasha.

Zolepheretsa

Kuonongeka, kuwonongeka kwa kutentha, ndi kuvala kwa abrasive kumalepheretsa kabowoledwe kake ndipo zimatha kuchitika ngakhale m'mitundu yofewa kwambiri. Komabe, mapangidwe ovuta kwambiri kuti PDC abowole ndi abrasive kwambiri.

Chachikulu VS chodula chaching'ono

Monga lamulo, odula akuluakulu (19mm mpaka 25mm) amakhala ankhanza kuposa odula ang'onoang'ono. Komabe, iwo akhoza kuwonjezera kusinthasintha kwa torque. Kuphatikiza apo, ngati BHA siinapangidwe kuti izitha kuthana ndi nkhanza zomwe zikuchulukirachulukira, zitha kukhala zosakhazikika.

Odula ang'onoang'ono (8mm, 10mm, 13mm, ndi 16mm) awonetsedwa kuti amabowola pamtunda wapamwamba wa ROP kuposa ocheka akuluakulu pamapulogalamu ena. Chimodzi mwa zinthu zotere ndi miyala yamchere.
Komanso, ma bitti amapangidwa ndi ocheka ang'onoang'ono koma ambiri amatha kupirira kukhudzidwa kwakukulu kutsitsa. 

Kuphatikiza apo, odula ang'onoang'ono amatulutsa tizidutswa ting'onoting'ono pomwe odula akulu amatulutsa zazikulu. Kudula kwakukulu kumatha kuyambitsa zovuta pakuyeretsa mabowo ngati madzi akubowola sangathe kunyamula zodulidwazo pamwamba pa annulus.

wodula mawonekedwe

Mawonekedwe odziwika bwino a PDC ndi silinda, mwina chifukwa chodula ma cylindrical amatha kukonzedwa mosavuta mkati mwa mawonekedwe opatsidwa kuti akwaniritse makulidwe akulu akulu. Makina otulutsa mawaya a elekitironi amatha kudula ndendende ndikupanga matebulo a diamondi a PDC. Mawonekedwe osapangana pakati pa tebulo la diamondi ndi gawo lapansi amachepetsa kupsinjika kotsalira. Izi zimathandizira kukana kupukuta, spalling, ndi delamination ya tebulo la diamondi. Mawonekedwe ena amakulitsa kukana kwamphamvu pochepetsa kupsinjika kotsalira.