Zvakawanda sei zvaunoziva nezve PDC cutter?

Pamusoro pePDC (Polycrystalline Diamond Compact) Cutter

PDC (Polycrystalline Diamond Compact) Cutter imhando yemhando yepamusorozvinhu zvinobatanidza polycrystalline diamond ine tungsten carbide substrate pane yakanyanya-yepamusoro tembiricha uye kumanikidza.

Kugadzirwa kwePDC cutter kwakasimudzira iyofixed-cutter bitkumberi muindasitiri yekuchera, uye pfungwa yacho yakabva yazivikanwa. Kubva pakuveurachiito chePDC cutters chinoshanda kupfuura kupwanya chiito chebhatani kana toothed bit, zvakagadziriswa kucheka- zvishomavari kudiwa zvakanyanya.

Muna 1982, PDC drill bits yakaverengera 2% chete yetsoka dzese dzakaboorwa. Muna 2010, 65% yenzvimbo yese yakacherwa yakagadzirwa nePDC.

Magadzirirwo ePDC Cutters? 

PDC Cutters akagadzirwa kubva tungsten carbide substrate uye synthetic diamond grit. Iyo inogadzirwa uchishandisa musanganiswa wekushisa kwepamusoro uye kudzvanywa kwepamusoro pamwe necatalyst yecobalt alloy kubatsira bond diamond uye carbide panguva yekupisa. Munguva yekutonhodza, tungsten carbide inodzikira pamwero we2.5 times nekukurumidza kupfuura dhaimondi, iyo inosanganisa Diamond neTungsten Carbide pamwe chete uye yobva yagadzira PDC Cutter.

Hunhu uye Zvishandiso

Sezvo PDC Cutters ine diamond grit uye tungsten carbide substrate, inosanganisa zvakanakira ese ari maviri diamond uye tungsten carbide.： 

1. High abrasion resistant

2. High impact resistant

3. High thermal stable

Iye zvino maPDC Cutters anoshandiswa zvakanyanya mukuchera kumunda weoiri, gasi uye geological kuongorora, kuchera marasha, uye zvimwe zvakawanda zvekuchera nekugaya zvikumbiro, zvishandiso sePDC Drill Bits, seSimbi PDC Drill Bits & Matrix PDC Drill Bits yekuchera mafuta uye. Tri-cone PDC Drill Bits yekuchera marasha.

Kuganhurirwa

Kukuvadzwa kwekukanganisa, kukuvadzwa kwekupisa, uye kupfeka kweabrasive zvese zvinotadzisa kuita kwechibhorani uye zvinogona kuitika mumhando dzakapfava dze geological. Nekudaro, iyo yakanyanya kuoma kuumbwa kwePDC diki kudhiraivha ndeye abrasive zvakanyanya.

Hombe VS diki cutter

Semitemo yakawanda, makucheka makuru (19mm kusvika 25mm) ane hukasha kupfuura madiki anocheka. Nekudaro, ivo vanogona kuwedzera torque kuchinja. Pamusoro pezvo, kana BHA isina kugadzirwa kuti igadzirise hukasha hwawedzera, kusagadzikana kunogona kukonzera.

Madiki anocheka (8mm, 10mm, 13mm, uye 16mm) akaratidzwa kudhiraivha paROP yepamusoro pane makucheka makuru mune mamwe maapplication. Imwe yekushandiswa kwakadaro ndeye limestone.
Zvakare, mabits akagadzirwa ane madiki anocheka asi mazhinji acho anogona kumirisana nepamusoro pesimba loading. 

Pamusoro pezvo, vacheki vadiki vanogadzira madiki ekucheka ukuwo macheki makuru achigadzira akakura makucheka. Kuchekwa kwakakura kunogona kukonzera matambudziko nekucheneswa kwegomba kana mvura yekuchera isingakwanisi kutakura zvicherwa kumusoro kwe annulus.

cutter chimiro

Iyo yakajairika PDC chimiro icylinder, muchidimbu nekuti cylindrical cutters inogona kurongeka zviri nyore mukati mekumanikidzwa kweiyo yakapihwa bit profile kuti iwane yakakura yekucheka densities. Electron wire discharge michina inogona kunyatso kucheka uye kuumba PDC diamond matafura. Iyo nonplanar interface pakati petafura yedhaimani uye substrate inoderedza kusara kunetseka. Aya maficha anovandudza kuramba kuchiping, spalling, uye diamond tafura delamination. Mamwe madhizaini ekugadzirisa anowedzera kukanganisa kuramba nekudzikisa kusara kwekushushikana mazinga.