3  Lintho Tseo U Lokelang ho li Tseba ka PDC Brazing

Li-cutters tsa PDC li khabisitsoe ho 'mele oa tšepe kapa oa matrix oa karolo ea ho cheka ea PDC. Ho ea ka mokhoa oa ho futhumatsa, mokhoa oa ho roala o ka aroloa ka ho chesa mollo, ho qhibiliha ha vacuum, vacuum diffusion bonding, high-frequency induction brazing, laser beam welding, joalo-joalo The Flame brazing e bonolo ho sebetsa le ho sebelisoa haholo. Kajeno re rata ho arolelana hanyane ka PDC flame brazing.

Ho chesa mollo ke eng?

Flame brazing ke mokhoa oa ho cheselletsa o sebelisang lelakabe le hlahisoang ke khase bakeng sa ho futhumatsa. Mokhoa o ka sehloohong oa ho chesoa ha lelakabe o kenyelletsa kalafo ea pele ho weld, ho futhumatsa, ho boloka mocheso, ho pholisa, kalafo ea post-weld, joalo-joalo.

Mokhoa oa ho besa lelakabe la PDC ke ofe?

1. Kalafo ea pele ho weld

(1) sandblast le hloekisa PDC cutter le PDC drill bit body. PDC cutter le drill bit ha ea lokela ho silafatsoa ka oli.

(2) lokisetsa solder le flux. Ka kakaretso re sebelisa solder ea silevera ea 40% ~ 45% bakeng sa brazing ea PDC. Flux e sebelisetsoa ho thibela oxidation nakong ea brazing.

2. Ho futhumatsa le ho boloka mocheso

(1) Preheat the PDC drill bit body ka har'a sebopi sa maqhubu a mahareng ho isa ho 530 ℃.

(2) Ka mor'a ho futhumatsa pele, sebelisa sethunya sa mollo ho futhumatsa 'mele o monyenyane le PDC cutter. Re tla hloka lithunya tse peli tsa malakabe, e 'ngoe bakeng sa ho futhumatsa 'mele oa boro le e' ngoe bakeng sa ho futhumatsa mochini oa PDC.

(3) Hlakola solder ka PDC recess 'me ue chese ho fihlela solder e qhibiliha. Beha PDC ka sekoting sa concave, tsoela pele ho futhumatsa 'mele oa ho cheka ho fihlela solder e qhibiliha' me e phalla le ho phalla, 'me butle-butle u matha le ho potoloha PDC nakong ea ts'ebetso ea soldering. Etsa kopo ea flux sebakeng seo sekhechana sa PDC se hlokang ho tiisoa ho thibela oxidation.

3. Cooling le ka mor'a weld kalafo

(1). Ka mor'a hore li-cutters tsa PDC li be le brazed, kenya "PDC drill bit" sebakeng sa ho boloka mocheso ka nako, 'me butle-butle u pholise mocheso oa mochine oa ho cheka.

(2) Ka mor'a hore re pholisoe karolo ea ho cheka ho 50-60 °, re ka ntša karolo ea ho phunya, sandblast le ho e bentša. Sheba ka hloko hore na sebaka sa welding sa PDC se tiisitsoe ka thata le hore na PDC e senyehile.

Mocheso oa mocheso o kae?

Mocheso o hlolehileng oa lera la daemane la polycrystalline o pota-potile 700 ° C, kahoo mocheso oa lera la daemane o tlameha ho laoloa ka tlase ho 700 ° C nakong ea ts'ebetso ea ho cheselletsa, hangata 630 ~ 650 ℃.

Haeba u thahasella li-rod tsa tungsten carbide 'me u batla boitsebiso bo eketsehileng le lintlha tse ling, u ka RE THUTA ka mohala kapa ka poso ka ho le letšehali, kapa U RE THUSE MAIL botlaaseng ba leqephe.