3  Izinto Okufanele Uzazi Nge-PDC Brazing

Abasiki be-PDC babrazed emzimbeni wensimbi noma we-matrix we-PDC drill bit. Ngokwendlela yokushisa, indlela yokushisa ingahlukaniswa ngokushisa amalangabi, i-vacuum brazing, i-vacuum diffusion bonding, i-high-frequency induction brazing, i-laser beam welding, njll. I-Flame brazing kulula ukuyisebenzisa futhi isetshenziswa kabanzi. Namuhla singathanda ukwabelana kancane mayelana nokubhula komlilo we-PDC.

Kuyini ukuvutha komlilo?

I-Flame brazing iyindlela yokushisela esebenzisa ilangabi elikhiqizwe ukushiswa kwegesi ukushisisa. Inqubo eyinhloko yokushisa ilangabi ihlanganisa ukwelashwa kwangaphambili kwe-weld, ukushisa, ukugcinwa kokushisa, ukupholisa, ukwelashwa kwe-post-weld, njll.

Iyini inqubo yokushisa ilangabi le-PDC?

1. Ukwelashwa kwangaphambi kokushisela

(1) i-sandblast futhi uhlanze i-PDC cutter kanye ne-PDC drill bit body. I-PDC cutter kanye ne-drill bit akumele igcotshwe ngamafutha.

(2) lungisa i-solder kanye ne-flux. Ngokuvamile sisebenzisa i-solder yesiliva engu-40% ~ 45% ye-PDC brazing. I-flux isetshenziselwa ukuvimbela i-oxidation ngesikhathi sokubhula.

2. Ukugcina ukushisa nokushisa

(1) Shisisa kuqala i-PDC drill bit body esithandweni somlilo esiphakathi nendawo ibe cishe ku-530℃.

(2) Ngemuva kokushisisa, sebenzisa isibhamu somlilo ukushisa umzimba omncane kanye ne-PDC cutter. Sizodinga izibhamu ezimbili ezivuthayo, esisodwa sokushisisa umzimba we-drill bit kanye nesokushisa kwesisiki se-PDC.

(3) Chaza i-solder ku-PDC recess futhi uyishise kuze kube yilapho i-solder incibilika. Faka i-PDC emgodini we-concave, qhubeka ushise umzimba we-drill bit kuze kube yilapho i-solder iyancibilika futhi igeleze futhi igcwale, futhi ugijime kancane futhi ujikeleze i-PDC ngesikhathi senqubo yokuhlanganisa. Faka i-flux endaweni lapho i-PDC cutter idinga ukugaywa khona ukuze ivimbele i-oxidation.

3. Ukupholisa kanye nokwelashwa kwe-post-weld

(1). Ngemva kokuba abasiki be-PDC sebeqinisiwe, faka i-PDC drill bit endaweni yokugcina ukushisa ngesikhathi, bese upholisa kancane izinga lokushisa le-drill bit.

(2) Ngemva kokupholisa i-drill bit ku-50-60 °, singakhipha i-drill bit, i-sandblast futhi siyipholise. Hlola ngokucophelela ukuthi indawo ye-PDC yokushisela i-welded ngokuqinile nokuthi i-PDC ifakwe i-welded yonakele yini.

Lithini izinga lokushisa lokubhodla?

Ukushisa okuhlulekayo kwesendlalelo sedayimane se-polycrystalline kuzungeze i-700 ° C, ngakho-ke izinga lokushisa ledayimane kufanele lilawulwe ngaphansi kuka-700 ° C phakathi nenqubo yokushisela, ngokuvamile i-630 ~ 650 ℃.

Uma unentshisekelo kuma-tungsten carbide rod futhi ufuna ulwazi olwengeziwe nemininingwane, UNGATHI XHUMANA NATHI ngocingo noma ngemeyili kwesokunxele, noma SITHUMELE IMEYILI ezansi kwekhasi.