Yakakosha yakarongedzwa brazed diamondi yekukuya vhiri chita

Nekuda kweiyo yepamusoro sosi simba pakati peadomasi neyakajairika simbi uye alloy, madhaimondi zvimisikidzwa haigoni kuturikwa neakadzika yakaderera yakanyungudutsa point alloy, nekusavimbika kubatana. Muhunyanzvi hwekugadzira hunyanzvi, madhaimondi anongotsamira pamhepo yekupfekedza simba rematrix kupinza mune yesimbi matrix, asi kwete kuumba yakasimba chemakemikari chisungo kana simbi simbi, zvichikonzera madhaimendi zvimedu kuparadzanisa kubva pamatrix simbi simbi mukushanda, iyo inoderedza zvakanyanya hupenyu hwebasa uye danho rekuita rezvishandiso zvemadhaimani. Muzvishandiso zvakawandisa, muyero wekushandiswa kwedhaimondi wakaderera, uye nhamba huru yemadhaimani anodhura akarasika mumadhodhi emarara. Lin Zengdong akatungamira pakushandisa madhaimasi metallization tekinoroji kumisikidza nzvimbo yedhaimani neazhinji manyowani maficha, akadai seyakaipisisa mafuta ekupisa, kwakanaka mafuta kugadzikana, kugadzirisa ayo epakutanga epanyama nemakemikari zvivakwa, achivandudza weetability kune simbi kana alloy solution, nezvimwewo.
Iyo simbi yedayimani yemhando yepamusoro yakwezva kutarisa kwevakagadziri madhizaini ekugadzira kumba nekune dzimwe nyika kubva kuma1970s. *** Kunyangwe zvakaratidzirwa kuti mamwe masimbi akadai seTungsten (isina oxidized) anogona kugadzira WC musana pamusoro peadomasi pakadzika tembiricha (anenge 800 ℃), iro sosi yekusimbisa mabvumirano inogona kuwanikwa nekudziya kweawa 1 pasi vacuum uye pamusoro pe600 ℃ zvinoenderana nemaitiro anoshandiswa kuziva madhaimani epamberi metallization. Zvinoenderana nemamiriro ezvinhu anotadza ezvishandiswa zvinoshandiswa zvakamisikidzwa kutemwa kwedhaimondi, hazvigoneki kuti simbi iyi ichaumbwa padhaimani kana ikadzipisa kwemaminitsi mashanu pa 900 ℃ mukusavhaza kana pakadzika. Nekuti kana iyo inoshanda simbi maatomu (Ti, V, Cr, nezvimwewo) yakafumiswa pane iyo diamondi kumusoro kana chimiro chekuita chinosvika kune metallurgios yekubatanidza chisungo nedhaimondi maitiro eatomu. Zvinoenderana nekushisa kunoshandiswa kupisa kupisa uye kwenguva pfupi, maitiro aya haana kukwana zvakakwana. Pasi pechimiro chakasimba chechikamu chekutadza (dzimwe nguva kune mashoma mashoma esimba uye yakaderera yakanyungudutsa simbi kana alloy mvura chikamu), iyo yemakemikari bonding kana simbi inosunga chisimba chematrix kune diamondi haina kusimba kana haizoumbiki zvachose.
Iyo yekutanga metallization yedhaimani repasi haisi iyo yekupedzisira chinangwa, asi chete imwe yezviyero zvekuziva iyo metallurgy yemakemikari kusangana nematrix simbi. Mushure mekuti iyo yakarukwa diamoni yakanyungudutswa kuita saw (drill) mazino, iyo diamondi yakavhurwa pane chikamu chechikamu chakarasikirwa kubatika, uye pamusoro pemakomba asara ari akanyorovera, zvinoita sekunge zvinoratidza kuti madomasi nematrix haasati asvika padanho re kusangana kwemakemikari. Naizvozvo, kunyangwe kana uso hwesimbi isati yatanga yedhaimani inozikanwa, tsika yakasimba-chikamu cheputi simbi yekuisa simbi haigoni kuziva iko kusangana kwakasimba pakati pemadomasi uye matrix zvinhu.