Nānā nui
ʻO ke kila kila he mea kaulana i nā ʻoihana like ʻole, me ke kūkulu ʻana, ka automotive, a me ka aerospace. ʻO kāna mau waiwai pale-corrosion a me ka lōʻihi e lilo ia i koho maikaʻi loa no nā noi he nui. Eia naʻe, hoʻokahi nīnau e ulu pinepine nei, ʻo ia ka "porous paha ke kila kila". ʻO ka pane pololei, ʻaʻole porous ka kila kuhili ʻole maʻamau.
Ma kēia pou blog, e ʻimi mākou i ke kumuhana o ka porosity i ke kila kila a hoʻoholo inā he mea porous.
1. He aha ke kila kila?
ʻO ka mea mua, pono mākou e ʻike he aha ke kila kila?
ʻO ke kila kila he ʻano kila i loaʻa ma kahi o 10.5% chromium. Hiki ke hoʻohui ʻia nā mea ʻē aʻe, e like me ka nickel, molybdenum, a me ka titanium e hoʻomaikaʻi ai i kāna mau waiwai pale-corrosion. ʻIke ʻia ke kila kila no kona ikaika kiʻekiʻe, ka lōʻihi, a me ke kūpaʻa ʻana i ka corrosion, i mea kūpono no ka hoʻohana ʻana i nā wahi paʻakikī.
Akā ʻoiaʻiʻo, Nui nā ʻano ʻano like ʻole o ke kila kila, kēlā me kēia me kona mau waiwai a me nā ʻano. E like me Austenitic stainless steel, he non-magnetic a he maikaʻi ke kūpaʻa corrosion, aʻo ka ferritic stainless steel he magnetic a emi ʻole ka corrosion.
2. Porosity i loko o nā mea
A laila pono mākou e ʻike i ka Porosity.
ʻO ka pōkole, ʻo Porosity ka hele ʻana o nā hakahaka a i ʻole nā pores i loko o kahi mea. Hiki i nā mea porous ke komo i nā wai a me nā kinoea, hiki ke hoʻopilikia i ko lākou mau waiwai a me ka lōʻihi. Hiki ke loaʻa ka porosity i kekahi mau mea, e like me ka lāʻau a i ʻole ka sponge, a i ʻole he hopena o nā kaʻina hana, e like me ka hoʻolei ʻana a i ʻole ka welding.
Hiki i ka hele ʻana o ka porosity ke hoʻopilikia nui i nā waiwai mechanical o kahi mea, e like me ka ikaika, ductility, a me ka paʻakikī. ʻOi aku paha ka maʻalahi o nā mea porous i ka ʻinoʻino, no ka mea, hiki i ka loaʻa ʻana o nā hakahaka ke hana i nā ala no nā mea ʻino e komo i ka mea.
3. Porosity i ke kila kila
Hiki i ke kila kila ke lilo i porous ma muli o nā kumu he nui, e like me nā kaʻina hana maikaʻi ʻole, ka ʻike ʻana i nā kaiapuni corrosive, a me ka hele ʻana o nā haumia. ʻO ke ʻano maʻamau o ka porosity i loko o ke kila kila he intergranular porosity, ka mea i hoʻokumu ʻia e ka ua o nā carbide ma nā palena palaoa i ka wā wili.
Hiki i ka intergranular porosity ke hoʻemi nui i ka pale ʻana o ke kila kila a hoʻopilikia i kona mau waiwai. ʻO nā ʻano porosity ʻē aʻe e hiki mai ana i loko o ke kila kila, ʻo ia ka hydrogen-induced porosity a me ka dendritic segregation.
4. Ho'āʻo no ka Porosity i ke kila kila
Nui nā ʻano hana no ka hoʻāʻo ʻana i ka porosity o ke kila kila, me ka nānā ʻike maka, ka hoʻāʻo wai penetrant, a me ka radiograph X-ray. ʻO ka nānā ʻana i nā hiʻohiʻona e pili ana i ka nānā ʻana i ka ʻili o ka mea no nā hōʻailona o ka porosity, e like me nā hakahaka a me nā māwae. ʻO ka hoʻāʻo wai penetrant e pili ana i ka noi ʻana i kahi hopena penetrant i ka ʻili o ka mea a laila hoʻohana i ka mea hoʻomohala e hōʻike i nā hemahema o ka ʻili.
ʻO ka radiography X-ray he ʻano hoʻāʻo ʻino ʻole e hoʻohana ana i nā kukui X e hana i nā kiʻi o ke ʻano o loko o kahi mea. Pono kēia ʻano hana no ka ʻike ʻana i ka porosity i loaʻa ma lalo o ka ʻili o ka mea.
5. Nā noi o ka porous kuhiliʻole
He mea nui ke kila kuhiliʻole porous i kekahi mau ʻoihana, e like me ka hana ʻana i ka meaʻai, nā lāʻau lapaʻau, a me nā mea lapaʻau. ʻO ka ʻili porous ʻole o ke kila kila he mea maʻalahi ia e hoʻomaʻemaʻe a hoʻomaʻemaʻe, e lilo ia i mea kūpono no ka hoʻohana ʻana i nā kaiapuni kahi e koʻikoʻi ai ka maʻemaʻe.
Hoʻohana maʻamau ʻia ke kila kila i ke kūkulu ʻana i nā mea kanu kemika a me ka petrochemical, kahi e ʻike ʻia ai i nā kaiapuni corrosive paʻakikī. Pono ke kila kila non-porous i kēia mau noi e hōʻoia i ka pale ʻana o ka mea i ka corrosion a hiki ke kū i nā kūlana koʻikoʻi.
Ka hopena
I ka hopena, hiki ke lilo i porous ke kila kila ma muli o nā kumu he nui, ʻo ia hoʻi nā kaʻina hana maikaʻi ʻole, ka ʻike ʻana i nā kaiapuni corrosive, a me ka hele ʻana o nā haumia. Hiki i ka porosity i loko o ke kila kila ke hoʻemi nui i kona kūpaʻa corrosion a hoʻopilikia i kona mau waiwai mechanical.
Kekahi FAQ e pili ana i ke kila kila porous?
1. He aha ke kila kila, a no ke aha i hoʻohana ʻia ai?
ʻO ke kila kila heʻano kila i loaʻa ka liʻiliʻi o 10.5% chromium, e hāʻawi ana i ka mea me kona mau pono kūikawā, me ka paleʻana i ka corrosion, ka ikaika, a me ka lōʻihi. Hoʻohana maʻamau ia i ka nui o nā noi, me ke kūkulu ʻana, ka lawe ʻana, nā mea lapaʻau, a me nā mea pono hale.
2. Hiki i ke kila kuhili ke lilo i porous?
ʻAe, ma lalo o kekahi mau kūlana, hiki ke lilo i ke kila kila. Hiki i ka porosity i loko o ke kila kila i ka wā o ka hana ʻana, ʻoi loa i ka wā wili. ʻO nā kumu ʻē aʻe e hiki ai ke hoʻoulu i ka porosity e pili ana i ka ʻike ʻana i nā kaiapuni corrosive a me ka loaʻa ʻana o nā haumia i loko o ka mea.
3. Pehea e pili ai ka porosity i nā waiwai o ke kila kila?
Hiki i ka porosity ke hoʻemi nui i ka pale ʻana i ka corrosion o ke kila kila, ʻoi aku ka maʻalahi o ka corrosion. Hiki iā ia ke hoʻonāwaliwali i ka mea, hoʻemi i kona ikaika a me ka lōʻihi.
4. Pehea ka porosity i loko o ke kila kila?
ʻO ka nānā ʻana he ala maʻalahi o ka hoʻāʻo ʻana no ka porosity, akā ʻaʻole maikaʻi paha ia i ka ʻike ʻana i ka porosity aia ma lalo o ka ʻili o ka mea. ʻO ka hoʻāʻo ʻana i ka wai penetrant a me ka radiograph X-ray ʻoi aku ka maikaʻi o ka hoʻāʻo ʻana no ka porosity, no ka mea hiki iā lākou ke ʻike i nā hemahema o ka ʻili a me ka porosity i lalo o ka ʻili o ka mea.
5. ʻAʻole porous nā kila kuhili ʻole?
ʻAʻole, ʻaʻole porous nā kila kila a pau. ʻOi aku ka porous o kekahi ʻano kila kila ma mua o nā mea ʻē aʻe, ma muli o kā lākou haku mele ʻana a me ka hana hana. No ka laʻana, ʻaʻole porous ka 304 kila kila, ʻoiai ʻo 316 kila kila hiki ke maʻalahi i ka porosity ma muli o kāna ʻike molybdenum kiʻekiʻe.
6. He aha nā ʻoihana e hilinaʻi nei i ke kila kila ʻole porous?
He mea koʻikoʻi ke kila kuhili ʻole porous i nā ʻoihana he mea nui ka hoʻomaʻemaʻe a me ka pale ʻana i ka corrosion. ʻO kēia mau ʻoihana e pili ana i ka hana meaʻai, nā lāʻau lapaʻau, a me nā mea lapaʻau. Hoʻohana maʻamau ʻia ke kila kila i ke kūkulu ʻana i nā mea kanu kemika a me ka petrochemical, kahi e ʻike ʻia ai i nā kaiapuni corrosive paʻakikī.
7. Pehea e pale ʻia ai ka porosity i ke kila kila?
Hiki ke pale ʻia ka porosity i loko o ke kila kila ma ka hoʻohana ʻana i nā ʻenehana wili kūpono a me ka hōʻoia ʻana i ka loaʻa ʻole o ka mea mai nā haumia. He mea nui nō hoʻi ka pale ʻana i ke kila kila mai ka ʻike ʻana i nā kaiapuni corrosive, e like me nā waikawa, nā paʻakai, a me nā mea kemika ʻē aʻe.
No laila he aha ke ʻano kila kuhili ʻole āu e ʻimi nei? ʻO ke kila kūpilikiʻi ʻole a i ʻole ʻole Porosity kila?
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Ka manawa hoʻouna: Mar-20-2023
