PDC OR PCD DILL BIT?KUSIYANA NDI CHIYANI?
Kubowola kwa PDC kumatanthauza Polycrystalline Diamond Cutter core bit
Zitsime zakale kwambiri zinali zitsime zamadzi, maenje osaya omwe amakumbidwa ndi manja m'madera omwe madzi amayandikira pamwamba, nthawi zambiri amakhala ndi makoma kapena makoma amatabwa.
PDC amapangidwa ndi kuphatikiza zigawo zina za diamondi polycrystalline (PCD) ndi wosanjikiza wa simenti carbide liner pa kutentha ndi kuthamanga kwambiri.
Ma PDC ndi ena mwa zida zolimba kwambiri pazida zonse za diamondi.
PCD amangotanthauza Polycrystalline Diamondi : PCD kawirikawiri anapangidwa ndi sintering ambiri yaying'ono makhiristo diamondi imodzi pa kutentha ndi kuthamanga kwambiri.PCD ili ndi kulimba kwabwino kwa fracture ndi kukhazikika kwabwino kwa kutentha, ndipo imagwiritsidwa ntchito popanga mabowola a geological.
PDC ili ndi zabwino zake zokana kuvala kwa diamondi ndi kulimba kwabwino kwa carbide.
Timapereka zida zobowola za PDC zopangidwa ndi mitundu ingapo yodulira kapena ma polycrystalline diamondi compacts (PDC) opaka pathupi.
PDC Cutters amapangidwa kuchokera ku carbide substrate ndi diamondi grit.Kutentha kwakukulu kozungulira madigiri a 2800 ndi kuthamanga kwakukulu kwa pafupifupi 1,000,000 psi kumapanga compact.Aloyi ya cobalt iliponso ndipo imagwira ntchito ngati chothandizira kuti sintering.Cobalt imathandizira kugwirizana kwa carbide ndi diamondi.
Monga lamulo, odula akuluakulu (19mm mpaka 25mm) amakhala ankhanza kuposa odula ang'onoang'ono.Komabe, iwo akhoza kuwonjezera kusinthasintha kwa torque.
Odula ang'onoang'ono (8mm, 10mm, 13mm ndi 16mm) awonetsedwa kuti amabowola pamtengo wapamwamba wa ROP kuposa odula akulu pamapulogalamu ena.Ntchito imodzi yotereyi ndi miyala yamchere mwachitsanzo.
Kuphatikiza apo, odula ang'onoang'ono amatulutsa tizidutswa tating'ono pomwe odula akulu amatulutsa zazikulu.Kudula kwakukulu kumatha kuyambitsa zovuta pakuyeretsa dzenje ngati madzi akubowola sangathe kunyamula zodulidwazo.
(1) kapena (2) Zofewa ndi zomata-Zomwe zimabowoka kwambiri monga dongo, marl, gumbo ndi mchenga wosaphatikizana.
(3) Mchenga wofewa, wapakatikati-Wotsika kwambiri, shale ndi ma anhydrite okhala ndi zigawo zolimba zosakanikirana.
(4) Mchenga, choko, anhydrite ndi shale.
(6) Yapakatikati molimba-Yapamwamba mphamvu yopondereza yokhala ndi mchenga wosakhala kapena theka lakuthwa, shale, laimu ndi anhydrite.
(7) Mphamvu yopondereza yolimba kwambiri yokhala ndi zigawo zakuthwa za mchenga kapena siltstone.
(8) Zolimba kwambiri zolimba komanso zakuthwa monga quartzite ndi miyala ya volcanic.
PDC KUDULA CHIKHALIDWE
Zofewa kwambiri (1) mpaka zapakati (4) mapangidwe amtundu wa pdc bits ali ndi kukula kumodzi kwa PDC cutter.Kudulira kwa PDC kumatanthauzidwa motere:
2 - kachidutswa kakang'ono kameneka kamakhala ndi odula 19mm
3 - kachidutswa kakang'ono kameneka kamakhala ndi odula 13 mm
4 - kachidutswa kameneka kamakhala ndi odula 8 mm
Zithunzi za PDC
Nthawi yotumiza: Aug-31-2022