Hoʻokaʻawale ʻana i ke kila kila

Hiki ke hoʻokaʻawale ʻia ke kila kila i ka austenitic stainless steel, ferritic stainless steel, martensitic stainless steel a me ka duplex stainless steel e like me kona ʻano metallographic.

(1) Austenitic kila kila

ʻO ke ʻano wela o ka lumi o ka austenitic stainless steel he austenite, ka mea i hana ʻia ma ka hoʻohui ʻana i ka nickel kūpono i ke kila kila chromium kiʻekiʻe.

Austenitic kuhiliʻole kila i paʻa austenite hale wale no ka Cr aia ma kahi o 18%, Ni 8% a 25%, a me C ma kahi o 0.1%. Hoʻokumu ʻia ke kila kila Austenitic ma ka Cr18Ni9 iron-based alloy. Me nā ʻano hoʻohana like ʻole, ua hoʻomohala ʻia nā ʻano ʻeono o nā kila stainless austenitic.

Nā māka maʻamau o austenitic stainless steel:
(1) 1Cr17Mn6Ni15N; (2) 1Cr18Mn8Ni5N; (3) 1Cr18Ni9; (4) 1Cr18Ni9Si3; (5) 06Cr19Ni10; (6) 00Cr19Ni10; (7) 0Cr19Ni9N; (8) 0Cr19Ni10NbN; (9) 00Cr18Ni10N; (10) 1Cr18Ni12; (11) 0Cr23Ni13; (12) 0Cr25Ni20; (13) 0Cr17Ni12Mo2; (14) 00Cr17Ni14Mo2; (15) 0Cr17Ni12Mo2N; (16) 00Cr17Ni13Mo2N; (17) 1Cr18Ni12Mo2Ti; (18) 0Cr; 1Cr18Ni12Mo3Ti; (20) 0Cr18Ni12Mo3Ti; (21) 0Cr18Ni12Mo2Cu2; (22) 00Cr18Ni14Mo2Cu2; (23) 0Cr19Ni13Mo3; (24) 00Cr19Ni13Mo3; (25) 0Cr18Ni16Mo5; (26) 1Cr18Ni9Ti; (27) (29) 0Cr18Ni; 0Cr18Ni13Si4;

ʻO ke kila kila Austenitic ka nui o Ni a me Cr, e hana ana i ke kila austenite ma ka lumi wela. Loaʻa iā ia ka plasticity maikaʻi, paʻakikī, weldability, corrosion resistance a me nā waiwai magnetic non-magnetic a nāwaliwali paha. Loaʻa iā ia ka pale corrosion maikaʻi i ka oxidizing a me ka hōʻemi ʻana i ka media. Hoʻohana ʻia ia no ka hana ʻana i nā mea paʻa i ka waika, e like me nā pahu corrosion-resistant a me nā mea hana lining a me ka halihali. Hiki ke hoʻohana ʻia nā paipu, nitric acid-resistant equipment, etc. Hoʻohana maʻamau ʻo Austenitic stainless steel i ka lāʻau hoʻonā, ʻo ia hoʻi, hoʻomehana ʻia ke kila i 1050 a 1150 ° C, a laila hoʻoheheʻe ʻia i ka wai a i ʻole ka ea e loaʻa ai kahi hoʻolālā austenite hoʻokahi.

(2) kila kuhiliʻole ferritic

ʻO nā māka i hoʻohana mau ʻia o ke kila kuhiliʻole ferritic: (1) 1Cr17; (2) 00Cr30Mo2; (3) 00Cr17; (4) 00Cr17; (5) 1Cr17Mo; (6) 00Cr27Mo;

Ferritic kuhiliʻole kila he kuhiliʻole kila nona ka hale i ka nui ferrite ma lumi wela. ʻO ka chromium ka 11% -30%, kona pale ʻana i ka corrosion, ka paʻakikī a me ka hoʻonui ʻana i ka weldability me ka piʻi ʻana o ka ʻike chromium, ʻoi aku ka maikaʻi o ka pale ʻana i ka corrosion o ka chloride ma mua o nā ʻano ʻano kila kila ʻē aʻe, ʻaʻole i loaʻa i kēia ʻano kila ka nickel, i kekahi manawa aia kekahi wahi liʻiliʻi o Mo, Ti, Nb a me nā mea ʻē aʻe. ʻO kēia ʻano kila nā hiʻohiʻona o ka conductivity thermal nui, ka helu hoʻonui liʻiliʻi, ke kūpaʻa oxidation maikaʻi, a me ke kūpaʻa koʻikoʻi koʻikoʻi. Hoʻohana nui ʻia e hana i ke kūpaʻa o ka lewa, ka mahu wai, ka wai a me nā waikawa oxidizing. ʻāpana ʻino. Eia nō naʻe, ʻaʻole maikaʻi nā waiwai mechanical a me nā hana kaʻina hana, a ua hoʻohana nui ʻia lākou i nā hale kūʻokoʻa waikawa me ke koʻikoʻi liʻiliʻi a me nā kila anti-oxidation. Hiki iā ia ke hana i nā ʻāpana hana i nā wela kiʻekiʻe, e like me nā ʻāpana turbine kinoea.