I-Welding Technology ye-PDC

Abasiki be-PDC bafaka ubulukhuni obuphezulu, ukumelana nokugqokwa okuphezulu kwedayimane, nokuqina okuhle komthelela we-carbide enosimende. Isetshenziswe kabanzi ekubholeni i-geological, ukumba uwoyela negesi, namathuluzi okusika. Ukushisa okuhlulekayo kwesendlalelo sedayimane se-polycrystalline yi-700 ° C, ngakho-ke izinga lokushisa le-diamond layer kufanele lilawulwe ngaphansi kuka-700 ° C ngesikhathi senqubo yokushisela. Indlela yokushisisa idlala indima ewujuqu kunqubo yokubhula ye-PDC. Ngokwendlela yokushisa, indlela yokubhoboza ingahlukaniswa ibe yi-flame brazing, i-vacuum brazing, i-vacuum diffusion bonding, i-high-frequency induction brazing, i-laser beam welding, njll.

PDC flame brazing

I-Flame brazing iyindlela yokushisela esebenzisa ilangabi elikhiqizwe ukushiswa kwegesi ukushisisa. Okokuqala, sebenzisa ilangabi ukushisa umzimba wensimbi, bese uhambisa ilangabi ku-PDC lapho ukugeleza kuqala ukuncibilika. Inqubo eyinhloko yokushisa ilangabi ihlanganisa ukwelashwa kwangaphambili kwe-weld, ukushisa, ukugcinwa kokushisa, ukupholisa, ukwelashwa kwe-post-weld, njll.

I-PDC ye-vacuum brazing

I-vacuum brazing iyindlela yokushisela eshisisa isiqeshana sokusebenza endaweni engenalutho emkhathini ngaphandle kwegesi ene-oxidizing. I-vacuum brazing iwukusebenzisa ukushisa okumelana nokokusebenza njengomthombo wokushisa ngenkathi endaweni kupholisa isendlalelo sedayimane se-polycrystalline ukuze kusetshenziswe ukubhula kwezinga lokushisa eliphezulu. Ukusebenzisa ukupholisa kwamanzi okuqhubekayo ngesikhathi senqubo yokubhula ukuze kuqinisekiswe ukuthi izinga lokushisa longqimba lwedayimane lilawulwa ngaphansi kuka-700 ° C; idigri ye-vacuum esimweni esibandayo se-brazing iyadingeka ukuba ibe ngaphansi kuka-6. 65 × 10-3 Pa, futhi i-vacuum degree esimweni esishisayo ingaphansi kuka-1. 33 × 10-2 Pa. Ngemva kokushisela, faka i-workpiece ku-incubator yokugcina ukushisa ukuze kuqedwe ukucindezeleka okushisayo okukhiqizwa phakathi nenqubo yokubhoboza. Amandla okugunda amajoyinti e-vacuum brazing azinzile, amandla ahlangene aphakeme, futhi amandla okugunda okumaphakathi angafinyelela ku-451.9 MPa.

I-PDC vacuum diffusion bonding

I-vacuum diffusion bonding iwukwenza izindawo zokusebenza ezihlanzekile ku-vacuum eduze komunye nomunye ngezinga lokushisa eliphezulu nokucindezela okukhulu, ama-athomu ahlakazeka kwelinye ngebanga elincane uma kuqhathaniswa, ngalokho ahlanganisa izingxenye ezimbili ndawonye.

Isici esibaluleke kakhulu se-diffusion bonding:

1. i-alloy ewuketshezi eyakhiwe kumthungo wokubhoboza ngesikhathi senqubo yokushisisa yokubhodla

2. ingxubevange ye-liquid igcinwa isikhathi eside ekushiseni okuphezulu kunokushisa kwe-solidus yensimbi yokugcwalisa i-brazing ukuze iqiniswe nge-isothermally ukuze yakhe i-brazing seam.

Le ndlela iphumelela kakhulu ku-PDC's cemented carbide substrate kanye nedayimane, elinama-coefficients okunweba ahluke kakhulu. Inqubo ye-vacuum diffusion bonding inganqoba inkinga ukuthi i-PDC kulula ukuwa ngenxa yokwehla okucijile kwamandla ensimbi yokugcwalisa i-brazing. (ngesikhathi sokumba, izinga lokushisa liyakhuphuka, futhi amandla ensimbi yokubhoboza azokwehla kakhulu.)

Uma unentshisekelo kubasiki be-PDC futhi ufuna ulwazi olwengeziwe kanye nemininingwane, UNGATHI XHUMANA NATHI ngocingo noma ngemeyili kwesokunxele, noma SITHUMELE I-IMEYILI ezansi nekhasi.