He aha ke kila kila paʻakikī?

ʻO ke kila kila paʻakikī precipitation, i ʻike ʻia hoʻi ʻo ke kila kila PH, he ʻano kūikawā ia o ke kila kila e loaʻa ai ka ikaika kiʻekiʻe ma o ke kaʻina hana wela kūikawā i kapa ʻia ʻo ka paʻakikī precipitation. Hoʻomaikaʻi kēia kaʻina hana i nā waiwai mechanical me ka ʻole o ka hoʻohaʻahaʻa ʻana i ke kūpaʻa ʻana i ka pala, e hoʻolilo ana i nā kila kila PH i koho makemake ʻia i nā ʻoihana koi e like me ka aerospace, petrochemical, moana, a me ka pale kaua.

Hoʻohui kēia ʻano kila kila i ke kūpaʻa ʻana i ka pala o nā papa kila austenitic me ka ikaika a me ka paʻakikī e hiki ke ʻoi aku ma mua o nā kila kalapona ikaika kiʻekiʻe. ʻO ka hopena he metala versatile e hāʻawi ana i ke kūpaʻa, ka hana, a me ke ola lawelawe lōʻihi i nā wahi hoʻonāukiuki.

Ke Kumumanaʻo Kumu o ka Paʻakikī ʻana o ka Ua

ʻO ka hoʻopaʻakikī ʻana o ka ua kahi hana hoʻomehana metallurgical e hoʻonui ai i ka ikaika o nā mea malleable, me ke kila kila, ka alumini, a me nā mea hoʻohuihui nickel. I loko o nā kila kila PH, pili kēia kaʻina hana i ʻekolu mau ʻanuʻu nui:

1. Lapaʻau Hoʻonā– Hoʻomehana ʻia ka mea hoʻohuihui i kahi mahana kiʻekiʻe e hoʻoheheʻe i nā mea hoʻohuihui i loko o kahi hopena paʻa.

2. Ke hoʻopau ʻana– Hoʻopaʻa ka hoʻoluʻu wikiwiki i nā mea hoʻohuihui ma kahi, e pale ana i ka hoʻokumu ʻana o nā pae i makemake ʻole ʻia.

3. Ka ʻelemakule ʻana (Ua)– ʻO ka hoʻomehana hou ʻana i kāohi ʻia e ʻae i nā ʻāpana liʻiliʻi, i ʻike ʻia he precipitates, e hana i loko o ka microstructure, e pale ana i ka neʻe ʻana o ka dislocation a me ka hoʻonui ʻana i ka ikaika.

Hana nā ʻōpala liʻiliʻi ma ke ʻano he mea keakea i ka neʻe ʻana o ka dislocation, kahi e hoʻonui nui ai i ka paʻakikī a me ka ikaika tensile o ka mea me ka mālama ʻana i kona mau waiwai kū i ka corrosion.

Nā ʻAno Maʻamau o ka Paʻakikī ʻana o ka Ua Kila Kila

Loaʻa kekahi mau papa o ke kila kila PH, kēlā me kēia me kona ʻano ponoʻī, nā waiwai mechanical, a me nā noi. ʻO nā mea maʻamau:

• 17-4PH (UNS S17400)– Loaʻa ma kahi o 17% chromium a me 4% nickel me nā hoʻohui keleawe. Hāʻawi i ka ikaika kiʻekiʻe, ka paʻakikī maikaʻi, a me ke kūpaʻa maikaʻi loa i ka pala i nā kūlana paʻakikī a me nā kūlana ʻelemakule.

• 15-5PH (UNS S15500)– Ua like me 17-4PH akā me ka paʻakikī ʻoi aku ka maikaʻi a me nā waiwai mechanical transverse i hoʻomaikaʻi ʻia.

• 17-7PH (UNS S17700)- Ua kaulana ʻia no kona ʻano maikaʻi i ke kūlana annealed a me ka ikaika kiʻekiʻe ma hope o ka paʻakikī ʻana o ka ua.

• 13-8Mo (UNS S13800)– Hāʻawi i ka paʻakikī koʻikoʻi, ke kūpaʻa i ka pala, a me ka ikaika kiʻekiʻe, hoʻohana pinepine ʻia i nā ʻoihana aerospace a me nā ʻoihana nukelea.

Nā Waiwai Koʻikoʻi o nā Kila Kila PH

1. Ikaika Kiʻekiʻe– Hiki ke hoʻokō i nā ikaika tensile ma mua o 1000 MPa ma hope o ka mālama ʻana i ka wela.

2. Kū'ē maikaʻi loa i ka palaho- Hoʻohālikelike ʻia me ke kila kila 304 a i ʻole 316 ma nā ʻano he nui.

3. Paʻakikī maikaʻi– Mālama i ke kūpaʻa hopena ʻoiai ma nā pae paʻakikī kiʻekiʻe.

4. Paʻa Ana– Ka liʻiliʻi o ka hoʻopilikia ʻana i ka wā o ka paʻakikī ʻana, e kūpono ai no nā ʻāpana kikoʻī.

5. Ke kū'ē ʻana i ka ʻaʻahu- Kūpono no nā noi i pili i ka friction a me ka abrasion.

Kaʻina Hana Hoʻomehana ma ke kikoʻī

Hiki ke hoʻopilikino ʻia ke kaʻina hana wela no nā kila kila PH e hoʻokō ai i nā pae ikaika a me nā pae paʻakikī kikoʻī.

1. Hoʻoheheʻe ʻana i ka hopena– Ke hoʻomehana ʻana i 1020–1060°C e hoʻoheheʻe i nā mea hoʻohuihui i loko o kahi hopena paʻa like.

2. Hoʻomaʻalili wikiwiki (Quenching)– ʻO ka maʻamau, ua kinai ʻia ka ea a i ʻole ka ʻaila e mālama i ka hopena paʻa.

3. Ka ʻelemakule ʻana (Ua)– Ke hoʻomehana hou nei i nā mahana ma waena o 480–620°C no kekahi manawa i kuhikuhi ʻia, e ʻae ana i nā mea i hoʻoheheʻe ʻia e like me nā hui keleawe a i ʻole nā ​​​​​​pae intermetallic e hana.

Ma ka hoʻoponopono ʻana i ka mahana a me ka manawa ʻelemakule, hiki i nā ʻenekinia ke hoʻomaikaʻi i nā waiwai mechanical. No ka laʻana, ʻo ka ʻelemakule ʻana ma nā mahana haʻahaʻa e hana pinepine i ka paʻakikī loa, ʻoiai ʻo nā mahana ʻelemakule kiʻekiʻe e hoʻonui i ka paʻakikī.

Nā noi o ka hoʻopaʻakikī ʻana i ke kila kila

Hoʻohana nui ʻia nā kila kila PH ma nā ʻāpana like ʻole ma muli o ko lākou mau waiwai kaulike.

• ʻOihana Lehulehu– Nā ʻāpana kūkulu, nā ʻāpana kapa pae, a me nā ʻāpana mīkini e pono ai ka lakio ikaika-a-kaumaha kiʻekiʻe.

• ʻOihana Moana– Nā ʻau hoʻowali, nā mea paʻa, a me nā ʻāpana ʻē aʻe i pili i ka wai kai.

• ʻAila a me ke Kinoea– Nā ʻāpana valve, nā ʻau pamu, a me nā mea hana downhole e pono e kū i ke kaomi kiʻekiʻe a me nā wahi ʻino.

• Ka Hana Kemika– Nā ipu reactor, nā mea hoʻohuihui, a me nā lako e pono ai ke kū'ē i nā kemika ʻino.

• Palekana a me nā Pū– Nā pahu pū, nā poloka breech, a me nā ʻāpana ʻē aʻe i hoʻokaumaha nui ʻia.

• Nā Mea Lapaʻau– Nā mea hana ʻokiʻoki, nā mea hana orthopedic, a me nā implants e pono ai ka ikaika a me ka biocompatibility.

Nā Pōmaikaʻi o ka Hoʻohana ʻana i nā kila kila PH

1. Ikaika e like me nā kila hao– Hoʻohālikelike pinepine nā kila kila PH a ʻoi aku paha i ka ikaika o nā kila metala, akā me ke kūpaʻa ʻoi aku ka maikaʻi o ka pala.

2. Hoʻemi ʻia nā kumukūʻai mālama– ʻO ke kūpaʻa maikaʻi loa i ka pala e hōʻemi ana i ka pono no nā uhi pale a i ʻole nā ​​​​​​hoʻololi pinepine.

3. Nā Hoʻonā Māmā– ʻO ka ikaika kiʻekiʻe e ʻae ai i ka hoʻemi ʻana i ka mānoanoa o ka ʻāpana kea, e hoʻohaʻahaʻa ana i ke kaumaha me ka ʻole o ka hoʻopilikia ʻana i ka hana.

4. Ka Versatility i ka Hana ʻana– Hiki ke hana ʻia i loko o ke ʻano annealed a laila hoʻopaʻakikī ʻia ma hope.

5. Ola lawelawe lōʻihi– Mālama i nā waiwai i ka hala ʻana o ka manawa, ʻoiai ma nā wahi paʻakikī.

Nā Palena a me nā Manaʻo

ʻOiai ko lākou mau pono, he mau palena ko nā kila kila PH:

• Kumukūʻai– ʻOi aku ke kumukūʻai ma mua o nā kila kila maʻamau.

• Nā Palena Mahana– Hiki ke emi ka ikaika i nā mahana hoʻomau ma luna o 300°C.

• Ka hiki ke hoʻopili ʻia– Pono paha kekahi mau papa i ka mālama wela ma hope o ka wili ʻana e hoʻihoʻi i nā waiwai mechanical.

Hoʻohālikelike me nā kila kila Austenitic a me Martensitic