Nā ʻōpala a me nā kumu maʻamau o ka Sintering

ʻO ka mea nui o ka carbide cemented he micro-sized tungsten carbide pauka o ka paʻakikī kiʻekiʻe. ʻO ka carbide Cemented ka huahana hope loa i hana ʻia me ka pauka metallurgy a hoʻopaʻa ʻia i loko o ka umu ahi a i ʻole ka umu hoʻemi hydrogen. Hoʻohana ka hana i ka cobalt, nickel, a i ʻole molybdenum e like me ka mea hoʻopaʻa. He hana koʻikoʻi ka Sintering i ka carbide cemented. ʻO ke kaʻina hana sintering ʻo ia ka wela i ka pauka paʻa i kahi mahana, mālama iā ia no kekahi manawa, a laila hoʻomaha a loaʻa kahi mea me nā ʻano i makemake ʻia. He paʻakikī loa ke kaʻina hana sintering carbide, a ua maʻalahi ka hana ʻana i nā ʻōpala sintered inā hana hewa ʻoe. E kamaʻilio ana kēia ʻatikala e pili ana i kekahi mau ʻōpala sintering maʻamau a me ke kumu o ka ʻōpala.

1. Ihi

ʻO ka ʻōpala sintering maʻamau mua ka ʻili. ʻO ka ʻili ʻana i ka wā e ʻike ʻia ai ka ʻili o ka carbide i hoʻopaʻa ʻia me nā māwae ma nā ʻaoʻao a me nā pūpū warping. Eia kekahi, ʻike ʻia kekahi mau ʻili liʻiliʻi liʻiliʻi e like me nā unahi iʻa, nā māwae pohā, a me ka pulverization. ʻO ka peeling ma muli o ka hoʻopili ʻana o ka cobalt i loko o ka compact, a laila hoʻopau ke kinoea i loko o ke kalapona i ke kalapona manuahi i loko o ia mea, ka hopena i ka emi ʻana o ka ikaika kūloko o ka compact, ka hopena i ka peeling.

2. Pores

ʻO ka lua o ka ʻōpala sintering maʻamau he pores maopopo ma ka ʻili o ka carbide cemented. Ua kapa ʻia nā puka ma luna o 40 microns he pores. ʻO nā mea a pau e hoʻoulu ai i nā ʻōpū e hoʻoulu i nā pores ma ka ʻili. Eia kekahi, i ka wā e loaʻa ai nā haumia i loko o ke kino sintered ʻaʻole i pulu ʻia e ka metala i hoʻoheheʻe ʻia a i ʻole ke kino sintered he pae paʻa koʻikoʻi a hiki i ka hoʻokaʻawale ʻana o ka pae wai ke kumu o nā pores.

3. Nā ʻōhū

ʻO nā ʻōhū ke loaʻa nā lua i loko o ka carbide i hoʻopaʻa ʻia a hoʻoulu ʻia i ka ʻili o nā ʻāpana pili. ʻO ke kumu nui o nā ʻōhū, ʻo ia ke kino kino i hoʻopaʻa ʻia. Loaʻa nā ʻano kinoea ʻelua.

4. ʻAʻole i hoʻonohonoho ʻia ma muli o ka hui ʻana i nā pauka like ʻole.

5. Deformation

ʻO ke ʻano like ʻole o ke kino sintered i kapa ʻia he deformation. ʻO nā kumu nui o ka deformation ʻo ia: ʻaʻole like ka puʻupuʻu paʻa o nā compacts; ʻo ke kino i hoʻopaʻa ʻia ʻaʻole lawa ka kalapona ma ka ʻāina; ʻAʻole kūpono ka hoʻouka ʻana o ka waʻa, a ʻaʻole kūlike ka pā hope.

6. Waena ʻEleʻele

Ua kapa ʻia ka ʻāpana ākea ma ka ʻili o ka haki ʻana i ke kikowaena ʻeleʻele. ʻO ke kumu o ka ʻeleʻele ʻeleʻele ka nui o ke kalapona a ʻaʻole lawa ka ʻike kalapona. ʻO nā mea āpau e pili ana i ka ʻike kalapona o ke kino sintered e hoʻopili i ke kikowaena ʻeleʻele o ka carbide.

7. Nā māwae

He mea maʻamau ka māwae i ka ʻōpala sintered carbide. ʻElua ʻano o nā māwae, ʻo ka māwae kōmi, a ʻo nā māwae oxidation kekahi.

8. ʻOi aku ke ahi

Ke kiʻekiʻe loa ka mahana o ka sintering a i ʻole ka lōʻihi o ka manawa paʻa, e hoʻopau ʻia ka huahana. ʻO ka hoʻopau ʻana o ka huahana e ʻoi aku ka mānoanoa o ka palaoa, piʻi ka pores, a emi nui nā waiwai alloy. ʻAʻole ʻike ʻia ka luster metala o nā huahana ma lalo o ke ahi, a pono e puhi hou ʻia.