Ungasarudza sei iwo echokwadi PDC cutters?

Yemazuva ano PDC drill Bits Design sematrix ine zvishoma yakafanana neiyo yemakore mashoma apfuura. Kusimba kwekusimba uye kupikisa kuramba kwakawedzera neinenge 33%, uye cutter brazes simba rakawedzera ne ≈80%. Panguva imwecheteyo, majeometri uye tekinoroji yekutsigira zvimiro zvakagadzirika, zvichikonzera yakasimba uye inogadzira matrix zvigadzirwa.
Cutters Material
PDC Cutters inogadzirwa kubva ku carbide substrate uye diamond grit. Kupisa kwakanyanya kunosvika 2800 madhigirii uye kumanikidza kwakanyanya kweanosvika 1,000,000 psi kunoumba compact. Iyo cobalt alloy inoshandawo sechinhu chinokonzeresa iyo sintering process. Iyo cobalt inobatsira kubatanidza iyo carbide nedhaimani.
Nhamba Yevacheki
Isu tinowanzo shandisa vashoma vanocheka pane akapfava PDC bits sezvo yega yega yekucheka inobvisa kudzika kukuru kwekucheka. Kune maumbirwo akaomarara, zvakakosha kushandisa mamwe macheki kutsiva kudzika kudiki kwekuchekwa.

PDC Drill Bits - Kucheka Saizi
Kune maumbirwo akapfava, isu tinowanzo sarudza makuru ekucheka pane akaomesesa mafomati. Kazhinji, iyo yakajairwa huwandu hwehukuru hunobva pa8 mm kusvika 19 mm pane chero ani zvake.

Isu tinowanzo tsanangura iyo yekucheka rack dhizaini yekumisikidza nekumashure rake uye parutivi rake angles.
●Mucheka wekumashure reki ndiyo kona inounzwa nechiso chemucheki kusvika pakuumbwa uye inopimwa kubva pakatarisana. Back rake angles anosiyana pakati, kazhinji, 15 ° kusvika 45 °. Hadzina kuramba dzichiyambuka chidimbu, kana kubva pabhiti kusvika pabhiti. Hukuru hweiyo cutter rake angle yePDC drill bits inokanganisa Penetration Rate (ROP) uye cutter kuramba kupfeka. Sezvo iyo rake angle inowedzera, ROP inodzikira, asi kuramba kupfeka kunowedzera sezvo mutoro wakaiswa ikozvino wakapararira pamusoro penzvimbo yakakura. PDC cutters ane madiki kumashure rakes anotora kudzika kwakakura kwekucheka uye nekudaro ane hukasha, anogadzira yakakwira Torque, uye ari pasi pekukasira kupfeka uye njodzi huru yekukanganisa kukuvara.

●Mucheka wepadivi reki chiyero chakaenzana chekutarisa kwemucheki kubva kuruboshwe kuenda kurudyi. Side rake angles kazhinji idiki. Iyo yedivi rake angle inobatsira kuchenesa gomba nemuchina kutungamira kucheka kune annulus.