No ka pane ʻana i kēia nīnau, pono mākou e hoʻomaopopo mua i ke ʻano o ka pahū? A he aha ka ʻōhua metala?
1. Hoʻokaʻawale ʻia nā mea pahū i nā mea pahū kino a me nā kemika
- ʻO ke kumu o ka pahū kino:
ʻO ka pahū kino ma muli o nā hoʻololi kino (e like me ka mahana, ka leo, ke kaomi, a me nā mea ʻē aʻe), a ʻaʻole loli nā waiwai a me ka hui kemika o nā mea pahū ma mua a ma hope o ka pahū.
Loaʻa ka ikehu pahū waiwai mai ka ikehu shrinkage, ka ikehu hoʻololi ʻana, ka ikehu kinetic, ka ikehu kahe, ka ikehu wela, ka ikehu uila, etc.
ʻO ka overpressure pahū o ke kinoea non-chemical kaʻina, pahū o ka wai kinoea, pahū o ke kinoea liquefied a me ka superheated wai, wela o ka hoʻoheheʻe ʻana, wela o ka dilution, wela o ka adsorption, pahū ma muli o ka hoʻomehana ʻana o waho, pahū i hana ʻia e ka wai kahe, pahū i hana ʻia e ka overcurrent , pahū i hana ʻia e ka wahi hoʻokuʻu ʻia nā pahū ea āpau i ke ʻano o nā pahū kino.
- Nā loina o ka pahū kemika:
Puka mai ka hopena kemika mai ka hopena kemika.
ʻO ka hui pū ʻana o nā mea puhi ahi a me ka ea, a i ʻole ka mea pahū (e like me ka dynamite), ʻo ka mea o ka pahū kemika he ʻōnaehana paʻa ʻole, e loaʻa i kahi hopena exothermic ikaika ma lalo o ka hana a kekahi ikehu o waho. , hana i ka wela kiʻekiʻe a me ke kaomi kiʻekiʻe, a hoʻopuka i kahi hopena luku ikaika.
- Pono e hoʻokō ʻia nā kūlana ʻelima:
H. Nā mea hiki ke puhi i ka ikehu, ʻo ia hoʻi, nā mea pahū;
B. ʻO nā mea hoʻoheheʻe ahi (oxidants), e like me ka oxygen, ea;
Hoʻohui like ʻia ka mea puhi ahi a me ka mea hoʻolalelale;
D. Hoʻokomoʻia ka huiʻana i kahi ākea paʻa (hoʻopuniʻia);
E hoʻomālamalama i kahi lako ikehu.
2. He aha ke ʻano metala?
ʻO ka pahu metala kahi ʻano metala porous me ka porosity oi aku ma mua o 90% a me kekahi ikaika a paʻakikī. ʻO kēia huahana he mea metala i loaʻa ka pore foam, ʻoi aku ka kiʻekiʻe o ka porosity ma mua o ka metala porous sintered maʻamau, a hiki i ka nui o ka pore ke hiki i 7 mm.
ʻO ka pahu metala kahi mea i hui pū ʻia i ʻelua ʻāpana i haku ʻia me ka pore dispersed phase a me ka metala matrix skeleton hoʻomau ka pae a me ka pae, a hilinaʻi kona mau waiwai i ka mana o ka metala matrix, porosity, pore structure a me ka hoʻomākaukau ʻana.
3. Hoʻohana ʻia ka ʻūhā metala i ka pale ahi pahū
He maikaʻi ka wai permeability a me ke kūpaʻa ahi maikaʻi. Hiki ke waiho ʻia i loko o nā paipu e lawe ana i nā kinoea lapalapa a i ʻole nā wai e hoʻōki i ka pahū ʻana ma o ka lawe ʻana i ka wela e hoʻōki i ka laha ʻana o ke ahi.
He kūpono kēia huahana no ka acetylene, oxygen flame gas welding and gas cutting technology, mining motors and power switches, oil refining and combustible gas pipelines, burner system, oil and gas recovery systems, heating furnaces, gas hoʻomaʻemaʻe pūnaewele, etc. e hoʻohana ʻia ma ke ʻano he mea hoʻopiha ahi a pahū no nā pahu mālama e like me ke kinoea liquefied a me ka wahie.
Ka manawa hoʻouna: Apr-08-2022 
