Welding Technology ya PDC

Odula a PDC amakhala ndi kulimba kwambiri, kukana kwa diamondi kwambiri, komanso kulimba kwamphamvu kwa carbide yomangidwa. Amagwiritsidwa ntchito kwambiri pobowola geological, pobowola mafuta ndi gasi, ndi zida zodulira. Kulephera kutentha kwa polycrystalline diamondi wosanjikiza ndi 700 ° C, kotero kutentha kwa diamondi wosanjikiza ayenera kulamulidwa m'munsimu 700 ° C pa ndondomeko kuwotcherera. Njira yotenthetsera imagwira ntchito yofunika kwambiri pakuwotcha kwa PDC. Malinga ndi njira yowotchera, njira yowotchera imatha kugawidwa kukhala kuyaka kwamoto, kutsekemera kwa vacuum, kulumikiza kwa vacuum, kuyika kwapang'onopang'ono kwapang'onopang'ono, kuwotcherera kwa laser, etc.

PDC kuyatsa moto

Kuwotchera kwa moto ndi njira yowotcherera yomwe imagwiritsa ntchito lawi lopangidwa ndi kuyaka kwa gasi pakuwotha. Choyamba, gwiritsani ntchito lawi lamoto kutentha thupi lachitsulo, kenaka sunthani lawi lamoto ku PDC pamene kutuluka kwayamba kusungunuka. Njira yayikulu yowotcha moto imaphatikizapo chithandizo cha pre-weld, kutentha, kusunga kutentha, kuziziritsa, chithandizo cha post-weld, etc.

PDC vacuum brazing

Vacuum brazing ndi njira yowotcherera yomwe imatenthetsa chogwirira ntchito pamalo opanda mpweya mumlengalenga popanda mpweya wa okosijeni. Vacuum brazing ndikugwiritsa ntchito kutentha kwachitsulo cha workpiece ngati gwero la kutentha pomwe kwanuko kumachepetsa wosanjikiza wa diamondi wa polycrystalline kuti agwiritse ntchito kutentha kwambiri. Kugwiritsa ntchito kuziziritsa kwamadzi kosalekeza panthawi yowotcha kuti kuonetsetsa kuti kutentha kwa diamondi kumayendetsedwa pansi pa 700 ° C; digiri vakuyumu mu ozizira boma brazing chofunika kukhala m'munsi kuposa 6. 65 × 10-3 Pa, ndi zingalowe digiri mu otentha boma ndi m'munsi kuposa 1. 33 × 10-2 Pa. Pambuyo kuwotcherera, ikani workpiece mu chofungatira chosungira kutentha kuti muchepetse kupsinjika kwamafuta komwe kumachitika panthawi yowotcha. Mphamvu ya kukameta ubweya wa ma vacuum brazing joints ndi yokhazikika, mphamvu yolumikizirana ndiyokwera, ndipo mphamvu yakumeta ubweya imatha kufika 451.9 MPa.

Kulumikizana kwa PDC vacuum diffusion

Kulumikizana kwa vacuum ndikupangitsa kuti zinthu zogwirira ntchito zoyera zizikhala pafupi ndi mnzake pakutentha kwambiri komanso kuthamanga kwambiri, maatomu amafalikira wina ndi mnzake patali pang'ono, potero amalumikizana magawo awiri.

Chofunikira kwambiri cha kugwirizana kwa diffusion:

1. aloyi yamadzimadzi yomwe imapangidwa mumsoko wa brazing panthawi ya kutentha kwa moto

2. alloy yamadzimadzi imasungidwa kwa nthawi yayitali pa kutentha kwapamwamba kuposa kutentha kwa solidus kwa chitsulo cha brazing filler kotero kuti imakhazikika mwa isothermally kupanga msoko wa brazing.

Njirayi ndiyothandiza kwambiri pagawo la PDC lopangidwa ndi simenti ya carbide ndi diamondi, zomwe zimakhala ndi ma coefficients osiyana kwambiri okulitsa. Njira yolumikizira vacuum imatha kuthana ndi vuto lomwe PDC ndiyosavuta kugwa chifukwa cha kutsika kwakukulu kwamphamvu ya chitsulo chodzaza zitsulo. (pakubowola, kutentha kumawonjezeka, ndipo mphamvu yachitsulo chowotcha imatsika kwambiri.)

Ngati mukufuna zodula za PDC ndipo mukufuna zambiri ndi zambiri, mutha KULAMBIRA NAFE pa lamya kapena makalata kumanzere, kapena TITUMIZENI MAIL pansi pa tsambali.