pehea ke kaʻina hana sintering i ka pauda metallurgy

Aloha e nā hoa! He ʻoihana mākounā mea hana ʻāpana metala pauda ma Kina. He nui kā mākoupauda metallurgy sintering o na mea. Ma ke ʻano he mea hana pauka metallurgy, e haʻi wau iā ʻoe pehea ke kaʻina hana ʻana i ka pauka metallurgy!

 ʻO ke kaʻina hana sintering ma ka pauda metallurgye hoʻololi i nā loli kino a me nā kemika, e like me ka wai a i ʻole ka hoʻoheheʻe ʻana a i ʻole ka volatilization, ka hoʻomaʻemaʻe ʻana i ke kinoea adsorption, ka hoʻopau ʻana i ke kaumaha, ka hoʻemi ʻana o ka oxide particle surface, intergranular material migration, recrystallization a me ka ulu ʻana o ka palaoa, no laila e hoʻonui ai i ke aniani aniani ma waena o nā ʻāpana, e emi a nalo paha ka pore. Ke ʻike ʻia ka māhele wai, e hiki mai ana ka hemo a me ka ua o ka māhele paʻa. ʻAʻohe palena ʻokoʻa o kēia mau kaʻina hana, akā ʻāwili a hoʻoikaika kekahi i kekahi. Ma kahi o nā sintering ʻē aʻe i ka metallurgy, paʻakikī ka hopena o nā huahana holoʻokoʻa i hana ʻia e ka pauka metallurgy. I ka makahiki 1942, ua hoʻohana ʻo German GF Schutig i nā ʻano noiʻi kino a me nā kemika e ana i ka mana o ka sintering wela ma ka electromotive ikaika, solubility, density, microstructure, mechanical properties of sintered body, a ʻike ʻia he hana paʻakikī loa ka sintering. I ka makahiki 1949, ua aʻo ʻo GCKuczynski o ʻAmelika Hui Pū ʻIa i ka sintering o nā pōpō metala a me nā papa metala a manaʻoʻiʻo ʻo ka neʻe ʻana o nā mea i ka wā o ka sintering i hana nui ʻia e ka diffusion. ʻO kā lākou hana i hoʻoikaika i ke aʻo ʻana i ke kumumanaʻo sintering i kahi pae hou. ʻO ka hapa nui o ka hana noiʻi ma hope mai i kālele ʻia i ke ʻano o ka neʻe ʻana o nā mea i ka wā o ka sintering.

Manaʻo maʻamau he ʻelima mau ʻano o ka neʻe ʻana o nā mea i ka wā o ka sintering: ke kahe ʻana a i ʻole ka plastic, evaporation a me ka condensation, volume diffusion, grain boundary diffusion, a me surface diffusion. Ke hoʻopaʻa ʻia nā ʻāpana pōʻai ʻelua e pili ana, pili paha ka ulu ʻana o ka radius ʻāʻī pili X me ka manawa sintering t penei:

Kaʻina Sintering Pono e hoʻokō ʻia ka Sintering i loko o ka umu sintering me kahi ea pale e pale aku i ka oxidation o ke kino sintered a i ʻole nā ​​hopena kemika ʻino. Nui nā ʻano umu sintering, hiki ke hoʻohana ʻia i kumu wela e like me ke kinoea maoli, ke kinoea, ka aila a me ka uila. He mea waiwai a maʻalahi ka umu hoʻomehana uila, maʻalahi e hoʻoponopono a hoʻomalu. ʻO ka lewa pale i hoʻohana pinepine ʻia he vacuum, argon, helium, nitrogen, carbon dioxide a me nā kinoea inert ʻē aʻe a me ka hydrogen, decomposition o ka amonia, carbon monoxide, ka hoʻololi ʻana o ke kinoea maoli a me nā kinoea hoʻemi ʻē aʻe.

I mea e hoʻomaikaʻi hou ai i ka hana o nā huahana sintered a me ka nui a me ka pololei o ke ʻano, pono pinepine ia e hoʻokō i ka hana ʻana, hoʻopau, repressing, ʻaila immersion, mechanical processing, wela a me nā kaʻina hana ʻē aʻe.

Kahe kaʻina hana hoʻoheheʻe