He aha ka ʻokoʻa ma waena o ke kila kila 309 a me SS316?

Ma ka ʻoihana kila kila,309a me316ʻelua mau papa kaulana loa i hoʻohana pinepine ʻia i nā noi ʻoihana a me nā noi moana. ʻOiai ʻo nā mea ʻelua e hāʻawi i ka maikaʻi loake kūpaʻa ʻana i ka palahoa meikaika mīkini, ua hoʻolālā ʻia lākou no nā kūlana lawelawe like ʻole. He mea nui ka hoʻomaopopo ʻana i ko lākou ʻokoʻa no nā ʻenekinia, nā mea hana, a me nā loea kūʻai e ʻimi nei i ka hana maikaʻi loa ma ke kumukūʻai kūpono loa.

Ma kēia alakaʻi kikoʻī maiSAKYSTEEL, he mea hana kila kila kila honua hilinaʻi a me ka mea hoʻolako, e wehewehe mākou i kanā ʻokoʻa koʻikoʻi ma waena o ke kila kila 309 a me SS316, e uhi ana i kā lākou haku mele ʻana, microstructure, pale ʻana i ka pala, nā palena mahana, a me nā noi kūpono.

1. Hoʻolauna i ke kila kila 309

Kila kila 309(UNS S30900)hemea hoʻohuihui austenitic kūpaʻa welai hoʻomohala mua ʻia nolawelawe wela kiʻekiʻeLoaʻa iā ia nā pae kiʻekiʻe okromium (23%)a menikela (13%)ma mua o 304 a i ʻole 316 kila kila, e hāʻawi ana iā ia i ke kūpaʻa maikaʻi loa i ka oxidation, scaling, a me ka carburization i nā mahana kiʻekiʻe.

ʻAʻole e like me nā papa ʻē aʻe he nui, ʻaʻole i hoʻonohonoho pono ʻia ʻo 309 no ke kūpaʻa ʻana i ka ʻōpala kai a waikawa paha akā noke kūpaʻa wela a me ke kūpaʻa oxidationi loko o nā umu ahi, nā ʻūlū ahi, a me nā lako hana wela.

Ke noho nei kona ʻano austenitic ʻoiai ma nā mahana kiʻekiʻe, e mālama ana i ka paʻakikī maikaʻi a me ka ikaika mechanical ma lalo o nā kūlana thermal cyclic.

2. Hoʻolauna i ke kila kila 316

He kila ʻili ʻole 316 (UNS S31600)ʻo ia kekahi o nā mea i hoʻohana nui ʻia ma ka honuanā kila kila austeniticʻIke ʻia ʻo ia kametala pae moana, hāʻawi ia i ke kū'ē maikaʻi loa ika pala o ka chloride, nā waikawa, a me ka hoʻouka kaua kemika.

ʻO ka hiʻohiʻona koʻikoʻi o SS316 ʻo ia ka hoʻohui ʻia o2–3% molybdenum (Mo), kahi e hoʻonui nui ai i ke kū'ē ʻana ika pala o ka lua a me ka ʻōpala crevice— ʻoi aku hoʻi ma nā wahi wai paʻakai a i ʻole nā ​​​​​​wahi waiwai i ka chloride.

He maʻalahi ka SS316, hiki ke hoʻoheheʻe ʻia, ʻaʻohe magnetic, a mālama i ka ikaika a me ka ductility ma nā ʻano mahana like ʻole. Hoʻohana nui ʻia ia manā ʻoihana hana kemika, kūkulu moku, meaʻai, a me nā lāʻau lapaʻau.

3. Nā ʻokoʻa o ka hoʻohuihui kemika

ʻOiai ʻo nā mea ʻelua he mau kila kila austenitic, wehewehe kā lākou mau mea hoʻohui i kā lākou ʻano a me ka noi.

  • ʻAno kila kila 309:

    • Chromium: 22–24%

    • Nikala: 12–15%

    • Molybdenum: ≤0.75%

    • Kalapona: ≤0.08%

    • Manganese: ≤2%

    • Silika: ≤1%

  • ʻAno kila kila 316:

    • Chromium: 16–18%

    • Nikala: 10–14%

    • Molibdenum: 2–3%

    • Kalapona: ≤0.08%

    • Manganese: ≤2%

    • Silika: ≤1%

ʻIke Koʻikoʻi:

  • SS309ua loaʻaʻoi aku ka nui o ka chromium a me ka nickelakāmolybdenum liʻiliʻi a ʻaʻohe paha, e lilo ana i mea kūpono noka pale ʻana i ka ʻokikene a me ke kū'ē ʻana i ka mahana kiʻekiʻe.

  • SS316hoʻokomo pūmolibdenum, ka mea e hāʻawi iā ia i ʻoi aku ka maikaʻike kūpaʻa ʻana i ka chloride a me ka waikawa, kūpono no nā ʻoihana moana a me nā kemika.

4. Nā Waiwai Microstructure a me Metallurgical

ʻO SS309 lāua ʻo SS316 nāpiha i ka austeniticnā kila kila me kahi ʻano kristal cubic face-centered (FCC).

Eia nō naʻe, ʻo ke kiʻekiʻe o ka chromium a me ka nickel o SS309 e hoʻopaʻa i ka hale ma nā mahana kiʻekiʻe, e pale ana i ka ʻike ʻana i ka palena o ka palaoa a me ka mālama ʻana i ka paʻakikī ma hope o ke kaʻapuni wela.

ʻO ka microstructure o SS316, i hoʻonui ʻia e ka molybdenum, hāʻawi i kahiʻiliʻili passive ʻoi aku ka paʻaka mea e pale aku ai i ka pitting a me ka pala i hoʻokumu ʻia e ka chloride — kahi waiwai i nele i 309.

5. Nā Waiwai Mekanika

Hōʻike nā papa ʻelua i ka hana mechanical ikaika, ʻoiai ua hoʻonohonoho pono ʻia no nā pae mahana like ʻole.

Nā waiwai mechanical maʻamau (kūlana annealed):

  • Ikaika Hoʻopaʻa:

    • SS309: 620 MPa

    • SS316: 515 MPa

  • Ikaika Hua (0.2% offset):

    • SS309: 310 MPa

    • SS316: 205 MPa

  • Hoʻolōʻihi:

    • SS309: 40%

    • SS316: 40%

Wehewehena:
Loaʻa iā SS309ikaika kiʻekiʻe ma nā mahana kiʻekiʻe, ʻoiai ʻo SS316 e hāʻawi neiʻoi aku ka maikaʻi o ka ductility a me ke kūpaʻa ʻana i ka corrosioni nā kūlana pulu, i loaʻa ka chloride.

6. Ke kū'ē ʻana i ka palaho

6.1 SS316 – Ka Poʻokela Moana a me nā Kemika

ʻO ka hiʻohiʻona kūikawā o SS316 ʻo ia konake kū'ē ʻana i ka lua chloride a me ka corrosion crevice, mahalo i ka molybdenum. Hana maikaʻi loa ia i loko o:

  • Ka ʻike ʻia ʻana o ke kai

  • Nā hale hana kemika a me nā lāʻau lapaʻau

  • Nā waikawa e like me ka acetic, phosphoric, a me ka sulfuric (dilute)

ʻO kānaPREN (Helu Kūlike o ke Kū'ē ʻana o ka Lua)ʻo ka maʻamau he 24–26, e ʻoi aku ka maikaʻi ma mua o 309 i nā pāpaho ʻino.

6.2 SS309 – Ka Mea Hana Kūpaʻa Wela

Kū'ē ʻo SS309 i ka oxidation a me ka carburization ma nā mahana a hiki i1000–1100°C (1830–2010°F)He kūpono ia no:

  • Nā uhi umu a me nā ʻōmole ʻālohilohi

  • Nā mea hoʻololi wela

  • Nā lako hana wela

Eia nō naʻe, ʻo 309emi ke kūpaʻa i ka palaho chloridea meʻaʻole i ʻōlelo ʻiano ka hoʻolōʻihi ʻana i ka wai kai a i ʻole nā ​​​​lewa i piha i ka paʻakai.

7. Ke kū'ē ʻana i ka mahana

ʻO kēia kekahi o nānā ʻokoʻa nuima waena o nā papa ʻelua:

  • SS309:ʻO ke kūpaʻa maikaʻi loa i ka oxidation a me ka scaling a hiki i 1100°C. Mālama ia i ka pono mechanical a me ke kūpaʻa o ka ʻili ma lalo o ka hoʻomehana mau.

  • SS316:Hana maikaʻi a hiki i 870°C (1600°F), akā ma luna o kēlā, hiki ke hoʻomaka e unahi a nalowale ka ikaika o ke kūkulu ʻana.

No laila,ʻO SS309 ke koho maikaʻi loa no ka lawelawe wela kiʻekiʻe, ʻoiaiHe kūpono ʻo SS316 no nā kūlana pala pulu a me ka kemika.

8. Ka hiki ke hoʻopili ʻia a me ka hana ʻana

ʻO SS309 lāua ʻo SS316 nāhiki ke hoʻopili koke ʻiame ka hoʻohana ʻana i nā kaʻina hana maʻamau e like me TIG, MIG, a me SMAW.

Eia nō naʻe, aia kekahi mau ʻōlelo koʻikoʻi no ka hana ʻana:

  • Pono ʻo SS309hoʻoluʻolu i kāohi ʻiama hope o ka hoʻoheheʻe ʻana e pale aku i ka hoʻoheheʻe ʻia ʻana o ka carbide.

  • ʻO SS316, ʻoi aku ka ductile,maʻalahi ke hana a hoʻowali, e hoʻolilo ana i mea kaulana no ka hoʻohana ʻana i ke kuhikuhipuʻuone a me nā mea hoʻonaninani.

Paipai ʻia ka hoʻomaʻemaʻe ma hope o ka hoʻopili ʻia ʻana a me ka passivation no ka hoʻihoʻi ʻana i ke kūpaʻa i ka pala.

9. Ka mālama wela

ʻO nā papa ʻeluaʻaʻole hiki ke paʻakikī ʻia e ka mālama welaa ua hoʻomehana ʻia ma waena o 1010–1120°C a ukali ʻia e ka hoʻomaʻalili wikiwiki.

Loaʻa iā SS309 ka pōmaikaʻi mai ka hoʻomehana ʻana ma hope o ka hana ʻana i ka wā e hōʻike ʻia ai i ka hoʻomehana cyclic, e hōʻoia ana i ka wehe ʻana o nā carbides i makemake ʻole ʻia.

Pono ka SS316 i ka annealing ma hope o ka hana anu kaumaha a i ʻole ka kuʻi ʻana e hoʻihoʻi i ka ductility.

10. Nā Waiwai Makemakika

ʻO SS309 lāua ʻo SS316 nāʻaʻohe magnetic i ke ʻano annealed, ʻoiai paha e hōʻike iki lākou i ka magnetism ma hope o ka hana anu a i ʻole ka kuʻihao.

No nā noi e koi ana i ka hana non-magnetic (e like me nā mea kani, nā lako meaʻai, a i ʻole nā ​​​​ʻōnaehana cryogenic), kūpono nā mea ʻelua, akāMakemake ʻia ʻo SS316ma muli o kona permeability haʻahaʻa a me ke kūpaʻa maikaʻi.

11. Kumukūʻai a me ka Loaʻa

Ma ke ʻano kumukūʻai, ʻo SS309 ma ke ʻano maʻamauʻoi aku ke kumukūʻai no kēlā me kēia tonama muli o kona kiʻekiʻenikala a me chromiumʻike. Eia nō naʻe, hāʻawi ia i nā mālama kālā lōʻihi i lokonā lako wela kiʻekiʻekahi e hāʻule ai nā kila kila maʻamau.

Loaʻa ka SS316 ma nā ʻoihana like ʻole a hoʻohana nui ʻia, e hana ana iamaʻalahi ke kūʻai aku ma ka honua holoʻokoʻaa pinepine ʻoi aku ka hoʻokele waiwai no ka hana nui ʻana.

Inā pili ka ʻōnaehana hanawela ma luna o 900°C, kohoSS309Inā ʻo ka pilikiaka ʻike ʻana i ka wai paʻakai a i ʻole ka waikawa, SS316ʻo ia ka mea lanakila maopopo.

12. Nā Hoʻohana Maʻamau o SS309

  • Nā ʻāpana umu a me nā hīnaʻi lapaʻau wela

  • Nā nozzles a me nā muffles puhi

  • Nā ʻōnaehana hoʻopau a me nā umu

  • Nā mea hoʻololi wela e hana ana i ka mahana kiʻekiʻe

  • Nā paila ʻoihana a me nā heleuma refractory

I ka pōkole, hoʻohana ʻia ʻo SS309 ma kahike kūpaʻa welaʻoi aku ka koʻikoʻi ma mua o ke kūpaʻa ʻana i ka corrosion.

13. Nā Hoʻohana Maʻamau o SS316

  • Nā lako hana moana a me nā ʻāpana moku

  • Nā lako hana meaʻai

  • Nā mīkini lāʻau lapaʻau

  • Nā pahu mālama kemika a me nā paipu

  • Nā ʻaoʻao hale a me nā lima lima

  • Nā mea hoʻololi wela a me nā ipu kaomi

ʻOi aku ka makemake o SS316 ma kahinā kemika ʻino, ka makū, a i ʻole ka paʻakaiʻo ia nā pilikia nui.

14. SS309 vs SS316: Hōʻuluʻulu Manaʻo o nā ʻOkoʻa Koʻikoʻi

  • Pahuhopu:

    • SS309 → Hoʻolālā ʻia nolawelawe wela kiʻekiʻe

    • SS316 → Hoʻolālā ʻia nolawelawe kemika ʻino/lawelawe kai

  • ʻElemene Hoʻohuihui Nui:

    • SS309 → Chromium Kiʻekiʻe a me Nickel

    • SS316 → Loaʻa ka Molybdenum

  • Palena Mahana:

    • SS309 → A hiki i 1100°C

    • SS316 → A hiki i 870°C

  • Ke kū'ē ʻana i ka Chloride:

    • SS309 → Kaulike

    • SS316 → Maikaʻi loa

  • Ikaika ma ka mahana kiʻekiʻe:

    • SS309 → ʻOi aku ka maikaʻi

    • SS316 → Kaulike

  • Kumukūʻai:

    • SS309 → Kiʻekiʻe iki aʻe

    • SS316 → Loaʻa nui, kūpono ke kumukūʻai

ʻO kēia mau ʻokoʻa e hoʻokaʻawale i kēlā me kēia papa no kāna kahua i manaʻo ʻia.

15. Pehea e koho ai ma waena o ke kila kila 309 a me 316

I ke koho ʻana ma waena o kēia mau kila kila ʻelua, e noʻonoʻo i kēia mau mea:

  1. Mahana Hana:Inā hana ka ʻōnaehana ma luna o 900°C, ʻo 309 ke koho kūpono.

  2. Kaiapuni ʻino:Inā kiʻekiʻe ka ʻike ʻana i ka chloride a i ʻole ka waikawa, koho i ka 316.

  3. Nā Pono Hana:No nā ʻano paʻakikī a me nā hoʻopau i wili ʻia, ʻoi aku ka maʻalahi o ka hana me 316.

  4. Ka Waihona kālā a me ka Loaʻa:ʻOi aku ka maʻalahi o ka loaʻa ʻana o 316 a me ka uku kūpono no ka hoʻohana ʻana ma ka ʻoihana holoʻokoʻa.

Ma ka hoʻohālikelike ʻana i nā waiwai o nā mea i nā kūlana lawelawe, hiki iā ʻoe ke hoʻokō i ke ola lawelawe lōʻihi a me nā kumukūʻai mālama haʻahaʻa.

16. No ke aha e koho ai iā SAKYSTEEL ma ke ʻano he hoa kila kila nou

Me nā makahiki he ʻumi o ka ʻike i ka hana ʻana a me ka hoʻokuʻu aku i ke kila kila,SAKYSTEELhāʻawi i nā mea ʻeluaKila kila 309a meKila kila 316ma nā ʻano huahana he nui:

  • Nā Papa a me nā Pepa

  • Nā Kaola a me nā Koʻokoʻo Poepoe

  • Nā Paipu a me nā Paipu

  • Nā Mea Hoʻohui a me nā Flanges

  • Nā ʻāpana mīkini i hana kūikawā ʻia

Hele mai nā huahana āpau me ka piha pihaNā palapala hōʻoia EN 10204 3.1/3.2, e hōʻoiaʻiʻo ana i ke kūlike o nā kemika a me nā mīkini meNā kūlana ASTM, ASME, a me EN.

Hilinaʻi kā mākou mea kūʻai aku ma ʻEulopa, ka Hikina Waena, a me ʻAsiaSAKYSTEELno:

  • Kaohi maikaʻi loa

  • Kumukūʻai hoʻokūkū

  • Nā manawa hoʻouna wikiwiki

  • Palapala loea a me nā hōʻike NDT

Inā ʻoe e makemake ana i ka 309 kūpaʻa wela a i ʻole 316 kūpaʻa i ka palaho, hōʻoia mākou i ka maikaʻi hilinaʻi a me ka hoʻokō honua.

17. Nā Manaʻo Hope Loa

ʻO kaʻokoʻa ma waena o ke kila kila 309 a me SS316aia i loko o kā lākou hoʻolālā kikoʻī:ke kūpaʻa wela e kūʻē i ke kūpaʻa ʻana i ka pala.

  • HoʻohanaSS309nonā umu, nā mea hoʻopau, a me nā lako hana wela kiʻekiʻe.

  • HoʻohanaSS316nonā pahu kemika, nā hale kai, a me nā ʻōnaehana maʻalahi i ka makū.

ʻO ke koho ʻana i ka metala kūpono e hōʻoiaʻiʻo ana i ka palekana, ka hana, a me ke kumukūʻai kūpono.

I loko o ke ao e pono ai ke kūpaʻa a me ka hilinaʻi,SAKYSTEELke hoʻomau nei i ka hoʻolako ʻana i nā mea kila kila kiʻekiʻe loa e hoʻokō ana i nā kūlana honua a lawelawe i nā pono ʻoihana like ʻole.

Ka manawa hoʻouna: ʻOkakopa-22-2025