Kahe kaʻina sintering carbide sima

ʻO ka sintering ocarbide simaʻO ka hoʻoheheʻe ʻana i ka pae wai, ʻo ia hoʻi, ua hana ʻia ma lalo o ke ʻano o ka pae hoʻopaʻa ʻana i ka pae wai.Hoʻomaʻamaʻa ʻia ka compact i 1350C-1600C i loko o kahi umu ahi.ʻO ka shrinkage linear o ka compact i ka wā sintering ma kahi o 18%, a ʻo ka nui o ka shrinkage ma kahi o 50%.ʻO ka hoʻohaʻahaʻa pololei e pili ana i ka nui o ka nui o ka pauka tungsten carbide a me ke ʻano o kacarbide sima.

ʻO ka sintering ocarbide simahe hana kino a me kemika paʻakikī, e komo pū ana me ka wehe ʻana i ka plasticizer, degassing, solid phase sintering, liquid phase sintering, alloying, densification, dissolution and precipitation, etc. ma lalo o nā kūlana sintering kūikawā.ʻOkoʻa loa kēia mau kaʻina hana ma muli o nā ʻano hana sintering like ʻole.

CarbideʻO ka hoʻoheheʻe ʻana i ka momi he kaʻina o ka sintering ma lalo o 1atm (1atm=101325Pa).ʻO ka Sintering ma lalo o nā kūlana vacuum e hoʻemi nui i ka pale o ka densification e ke kinoea adsorbed ma ka lepo lepo a me ke kinoea i loko o nā pores i pani ʻia, e kūpono ana i ke kaʻina diffusion a me ka densification, a pale i ka hopena ma waena o ka metala a me kekahi mau mea i ka lewa i ka wā o ka sintering.Hiki iā ia ke hoʻomaikaʻi maikaʻi i ka pulu o ka pae hoʻopaʻa wai a me ka pae paʻakikī, akā pono e mālama ʻia e pale i ka nalowale ʻana o ka cobalt i ka wā o ka sintering vacuum.Hiki ke hoʻokaʻawale ʻia ka sintering vacuum i ʻehā mau pae, ʻo ia hoʻi ka plasticizer removal stage, pre-sintering stage,tungsten carbidekiʻekiʻe-mehana sintering pae, a me ka hooluolu pae.