Isingeniso esifushane sabasiki be-PDC

 

Umklamo wanamuhla we-PDC drill Bits njenge-matrix awufani nhlobo nowaseminyakeni embalwa edlule. Amandla okubamba kanye nokumelana nomthelela kukhuphuke okungenani ngo-33%, kanti amandla e-cutter brazes akhuphuke ngo-≈80%. Ngesikhathi esifanayo, amajiyometri kanye nobuchwepheshe bezakhiwo ezisekelayo kuthuthukile, okuholele emikhiqizweni ye-matrix eqinile nekhiqizayo.
Izinto Zokusika
Izicucu ze-PDC zenziwe nge-carbide substrate kanye ne-diamond grit. Ukushisa okuphezulu okungaba ama-degree angu-2800 kanye nokucindezela okuphezulu okungaba yi-1,000,000 psi kwakha i-compact. I-alloy ye-cobalt nayo isebenza njengesisusa senqubo yokusila. I-cobalt isiza ukubopha i-carbide nedayimane.
Inani Labasiki
Ngokuvamile sisebenzisa izicucu ezimbalwa kuma-bits athambile e-PDC njengoba isicucu ngasinye sisusa ukujula okukhulu kokusikwa. Ukuze kube nokwakheka okunzima, kubalulekile ukusebenzisa izicucu eziningi ukuze kulungiswe ukujula okuncane kokusikwa.

 

Ama-PDC Drill Bits – Usayizi Wezisiki
Ukuze kube nokwakheka okuthambile, sivame ukukhetha izicucu ezinkulu kunalezo eziqinile. Ngokuvamile, ububanzi obujwayelekile bosayizi busukela ku-8 mm kuya ku-19 mm kunoma iyiphi ingxenye.

 

 

Ngokuvamile sichaza indlela yokwakheka kwe-cutter rack ngokusebenzisa i-back rake kanye nama-engeli e-side rake.
●I-cutter back rake yi-engeli evezwa ubuso bomsiki kuya ekwakhekeni futhi ilinganiswa kusukela phezulu. Ama-engeli e-back rake ahluka phakathi, ngokuvamile, angu-15° kuya ku-45°. Azihlali ndawonye kulo lonke i-bit, noma kusukela ku-bit kuya ku-bit. Ubukhulu be-engeli ye-cutter rake yama-PDC drill bits buthinta i-Penetration Rate (ROP) kanye nokumelana nokuguguleka komsiki. Njengoba i-engeli ye-rake ikhula, i-ROP iyancipha, kodwa ukumelana nokuguguleka kuyanda njengoba umthwalo osetshenzisiwe manje usakazeka endaweni enkulu kakhulu. Ama-PDC cutters anama-back rake amancane athatha ukujula okukhulu kokuguguleka futhi ngenxa yalokho anolaka kakhulu, akhiqiza i-Torque ephezulu, futhi asengozini yokuguguleka okusheshayo kanye nengozi enkulu yokulimala komthelela.

 

 

●I-cutter side rake iyisilinganiso esifanayo sokuma kwe-cutter kusuka kwesobunxele kuya kwesokudla. Ama-engeli e-side rake ngokuvamile mancane. I-engeli ye-side rake isiza ekuhlanzeni imigodi ngokuqondisa ngomshini izingcezu ziye ku-annulus.