Li-cutters tsa polycrystalline diamond compact (PDC).
Taemane ea maiketsetso
Hangata grit ea daemane e sebelisoa ho hlalosa lithollo tse nyane (≈0.00004 in.) tsa daemane ea maiketsetso e sebelisoang e le sesebelisoa sa mantlha sa li-cutters tsa PDC.Mabapi le lik'hemik'hale le thepa, taemane e entsoeng ke motho e tšoana le taemane ea tlhaho.Ho etsa grit ea taemane ho kenyelletsa ts'ebetso e bonolo ea lik'hemik'hale: k'habone e tloaelehileng e futhumatsoa tlas'a khatello e phahameng haholo le mocheso.Leha ho le joalo, ha e le hantle, ho etsa taemane ha ho bonolo.
Likristale tsa daemane ka bomong tse ka har'a grit ea daemane li na le mekhoa e fapaneng.Sena se etsa hore thepa e be matla, e be bohale, 'me, ka lebaka la ho thatafala ha daemane e ka har'a eona, e hana ho apara ka ho fetisisa.Ha e le hantle, sebopeho se sa reroang se fumanoang ka daemane ea maiketsetso e kopantsoeng e sebetsa hantle ho kuta ho feta litaemane tsa tlhaho, hobane litaemane tsa tlhaho ke likristale tsa cubic tse robehang habonolo ho latela meeli ea tsona e hlophisitsoeng, ea kristale.
Leha ho le joalo, grit ea daemane ha e tsitsitse mochesong o phahameng ho feta taemane ea tlhaho.Hobane metallic catalyst e qabeletsoe ka har'a sebopeho sa grit e na le sekhahla se phahameng sa katoloso ea mocheso ho feta daemane, katoloso e fapaneng e beha libonto tsa daemane ho isa ho taemane tlas'a sekuti, 'me haeba meroalo e phahame ka ho lekana, e baka ho hloleha.Haeba litlamo li hlōleha, litaemane li lahleheloa ka potlako, kahoo PDC e lahleheloa ke boima ba eona le bohale ba eona 'me e fetoha e sa sebetseng.Ho thibela ho hloleha ho joalo, li-cutters tsa PDC li tlameha ho pholile ka ho lekaneng nakong ea ho cheka.
Litafole tsa taemane
Ho etsa tafole ea daemane, grit ea daemane e tšeloa ka tungsten carbide le metallic binder ho etsa lera le nang le taemane e ngata.Li na le sebopeho se kang sephaphatha, 'me li lokela ho etsoa tse teteaneng ka hohle kamoo ho ka khonehang, hobane molumo oa daemane o eketsa bophelo ba ho apara.Litafole tsa daemane tsa boleng bo holimo ke ≈2 ho isa ho 4 mm, 'me tsoelo-pele ea theknoloji e tla eketsa botenya ba tafole ea daemane.Li-substrates tsa Tungsten carbide hangata li phahame ka ≈0.5 in. 'me li na le sebopeho le litekanyo tse tšoanang le tsa tafole ea daemane.Likarolo tse peli, tafole ea daemane le substrate, li etsa sehahi (setšoantšo sa 4).
Ho theha PDC hore e be libopeho tse molemo bakeng sa li-cutters ho kenyelletsa ho beha grit ea daemane, hammoho le substrate ea eona, ka har'a sejana sa khatello ebe se chesa mocheso o phahameng le khatello.
Liseha tsa PDC li ke ke tsa lumelloa ho feta mocheso oa 1,382°F [750°C].Mocheso o feteletseng o hlahisa ho apara ka potlako, hobane katoloso e fapaneng ea mocheso pakeng tsa binder le daemane e atisa ho pshatla likristale tsa grit tsa daemane tse kenang ka har'a tafole ea daemane.Matla a tlamahano pakeng tsa tafole ea daemane le substrate ea tungsten carbide a boetse a behiloe kotsing ke katoloso e fapaneng ea mocheso.
Nako ea poso: Apr-08-2021