Bei pii lɛ, mɛi susuɔ nakaivalve lɛni akɛ dade ni sɛɛ efooo fee lɛ, ni ekɛ ŋmɔtɔ baaa. Kɛji eba lɛ nakai lɛ, ekolɛ eji dade lɛ he naagba. Enɛ ji susumɔ ni ejaaa ni kɔɔ dade ni sɛɛ efooo, ni baanyɛ afee ŋmɔtɔ hu yɛ shihilɛi komɛi amli lɛ he shishinumɔ ni bɛ lɛ he.
Dade ni bɛ ŋmɔlɔ yɛ nyɛmɔ ni ekɛteɔ shi ewoɔ kɔɔyɔɔ mli la ni haa hulu tsoɔ waa lɛ—ni ji, ŋmei nyɛŋ afee lɛ, ni eyɛ nyɛmɔ hu ni ekɛbaafite nibii ni acid, alkali, kɛ ŋmei yɔɔ mli lɛ amli .—ni ji, ŋmei ni nyɛɔ eshiɔ. Shi kɛlɛ, bɔ ni enyɛɔ ewuɔ eshiɔ ŋmeii lɛ dalɛ tsakeɔ kɛ tsofai ni yɔɔ edade lɛ diɛŋtsɛ mli lɛ, bɔ ni ebuɔ ehe ehaa, shihilɛi ni akɛtsuɔ nii kɛ shihilɛ mli adafitswaa henɔi lɛ.
Bei pii lɛ, ajaa dade ni bɛ ŋmɔlɔ mli awo:
Bei pii lɛ, taakɛ dade he mfonirifeemɔ gbɛjianɔtoo lɛ tsɔɔ lɛ, ajaa dade ni bɛ ŋmɔlɔ ni ji austenitic, dade ni bɛ ŋmɔlɔ ni ji ferritic, kɛ dade ni bɛ ŋmɔlɔ ni ji martensitic. Yɛ nɛkɛ shishijee dade he mfonirifeemɔ gbɛjianɔtoi etɛ nɛɛ anɔ lɛ, kɛha hiamɔ nii kɛ yiŋtoi pɔtɛɛi lɛ, anáa dade ni yɔɔ fãi enyɔ, dade ni haa nugbɔshiimɔ mli waɔ kɛ dade ni dade ni yɔɔ mli lɛ shɛɛɛ 50% lɛ.
1. Austenitic dade ni bɛ ŋmɔlɔ.
Matrix lɛ ji nɔ ni austenite shishitoo (CY fa) ni ji hiɛ-teŋgbɛ kubik kristalo shishitoo, ni jeee magnetic, ni fɛ̃i nitsumɔ (ni ebaanyɛ ekɛ magnetic nibii komɛi aba) dade ni bɛ ŋmɔlɔ woɔ mli hewalɛ titri. Akɛ yibɔi ni yɔɔ 200 kɛ 300 mli, tamɔ 304 etsɔɔ Amerika Dade kɛ Dade Nitsumɔhe lɛ.
2. Ferritic dade ni bɛ ŋmɔlɔ.
Matriks lɛ ji ni ferrite shishitoo lɛ yeɔ nɔ ((fã) ni ji gbɔmɔtso lɛ teŋgbɛ kubik kristalo shishitoo lɛ, ni ji magnetic ni bei pii lɛ, anyɛɛɛ aha ewa kɛtsɔ la ni akɛtsuɔ nii lɛ nɔ, shi abaanyɛ awo mli hewalɛ fioo kɛtsɔ fɛ̃i nitsumɔ nɔ. Akɛ 430 kɛ 446 ekadi American Iron and Steel Institute lɛ.
3. Martensitic dade ni bɛ ŋmɔlɔ.
Matrix lɛ ji martensitic structure (gbɔmɔtso lɛ teŋgbɛ cubic loo cubic), magnetic, ni abaanyɛ atsake etsɔne mli nibii kɛtsɔ la ni akɛtsuɔ nii lɛ nɔ. Akɛ yibɔi ni ji 410, 420 kɛ 440 etsɔɔ Amerika Dade kɛ Dade Nitsumɔhe lɛ. Martensite yɛ austenite shishitoo mla ko yɛ hulutsoo be ni mli wa mli, ni kɛ́ ajie lɛ kpo kɛyashɛ tsu mli latsaa mli yɛ be ni sa mli lɛ, abaanyɛ atsake austenite shishitoo mla lɛ afee martensite (ni ji, ni efee nɔ ni wa).
4. Austenitic-ferritic (duplex) dade ni sɛɛ efooo.
Matrix lɛ yɛ austenite kɛ ferrite ni yɔɔ fãi enyɔ mli lɛ fɛɛ, ni nɔ ni yɔɔ less-phase matrix lɛ mli lɛ fa fe 15%. Eyɛ magnetic ni abaanyɛ awo mli hewalɛ kɛtsɔ fɛ̃i nitsumɔ nɔ. 329 ji dade ni bɛ ŋmɔlɔ ni afɔɔ namɔ. Kɛ akɛto austenitic dade ni bɛ ŋmɔlɔ he lɛ, dade ni yɔɔ fãi enyɔ lɛ yɛ hewalɛ babaoo, ni shitee-kɛ-woo ni teɔ shi ewoɔ intergranular ŋmeii kɛ chloride stress ŋmeii kɛ pitting ŋmeii lɛ yaa hiɛ jogbaŋŋ.
5. Nugbɔshiimɔ ni haa dade ni sɛɛ efooo lɛ mli wa.
Matrix lɛ ji austenite loo martensitic shishitoo ni abaanyɛ aha ewa kɛtsɔ nugbɔshiimɔ ni haa ewaa lɛ nɔ. Akɛ yibɔ ni ji 600, tamɔ 630, ni ji 17-4PH lɛ ekadi Amerika Dade kɛ Dade Nitsumɔhe lɛ.
Kɛ aawie he lɛ, kɛfata dade ni akɛwoɔ dade mli lɛ he lɛ, dade ni ji austenitic ni bɛ ŋmɔlɔ ni nyɛɔ efiteɔ nii lɛ hi jogbaŋŋ. Yɛ he ko ni ŋmɔtɔ bɛ mli lɛ, abaanyɛ akɛ dade ni ji ferritic ni bɛ ŋmɔtɔ atsu nii. Yɛ shihilɛ ko ni mli wa mli lɛ, kɛji akɛ ehe miihia ni nibii lɛ aná nɔ ni nɔ kwɔ Kɛha hewalɛ loo nɔ ni wa waa lɛ, abaanyɛ akɛ martensitic dade ni bɛ ŋmɔlɔ kɛ dade ni haa nugbɔshiimɔ mli wa lɛ atsu nii.
Dade ni bɛ ŋmɔlɔ ni afɔɔ namɔ kɛ nibii ni yɔɔ mli
01 304 Dade ni bɛ ŋmɔlɔ
Eji dade ni ji austenitic ni akɛtsuɔ nii waa ni akɛtsuɔ nii babaoo lɛ ateŋ ekome. Ehi jogbaŋŋ kɛha fãi ni agbala mli shɔŋŋ kɛ acid paipii, tsɛnsii, tsɔne mli fãi, nibii srɔtoi ni akɛtsuɔ nii lɛ ahe gbɔmɔtsei, kɛ ekrokomɛi afeemɔ.
02 304L Dade ni bɛ ŋmɔlɔ
Bɔni afee ni atsu naagba ni ji ultra-low carbon austenitic stainless steel ni afee yɛ Cr23C6 ni shwieɔ shi lɛ hewɔ lɛ, dade ni bɛ dade 304 lɛ mli fitemɔ ni naa wa baa yɛ shihilɛi komɛi amli lɛ, e-sensitised state intergranular corrosion shitee-kɛ-woo lɛ hi kwraa fe 304 stainless steel lɛ. Kɛ jeee hewalɛ ni baa shi fioo lɛ, nibii krokomɛi ni yɔɔ mli lɛ tamɔ dade 321 ni sɛɛ efooo lɛ nɔŋŋ. Akɛtsuɔ nii titri kɛhaa nibii ni nyɛɔ efiteɔ kɛ nibii ni yɔɔ mli ni anyɛɛɛ akɛ tsofa awo mli yɛ tsɔne ni akɛwoɔ mli lɛ sɛɛ, ni abaanyɛ akɛfee nibii srɔtoi ni akɛtsuɔ nii lɛ ahe gbɔmɔtsei.
03 304H Dade ni bɛ ŋmɔlɔ
304 dade ni sɛɛ efooo lɛ mligbɛ nine lɛ yɛ carbon mass fraction ni ji 0.04%-0.10%, ni etsuɔ nii yɛ hulutsoo ni nɔ kwɔ mli lɛ hi fe 304 dade ni sɛɛ efooo lɛ nɔ lɛ.
04 316 Dade ni bɛ ŋmɔlɔ
10Cr18Ni12 dade lɛ nɔ molybdenum ni akɛfataa he lɛ haa dade lɛ náa hewalɛ kpakpa ni ekɛbaa ŋwɛi kɛ ŋmeii ni shwieɔ shi lɛ shi. Yɛ ŋshɔ mli nu kɛ nibii krokomɛi amli lɛ, nɔ ni nyɛɔ eshiɔ ŋmeii lɛ hi fe dade 304 ni bɛ ŋmɔlɔ, ni akɛtsuɔ nii titri kɛhaa nibii ni nyɛɔ eshiɔ ŋmeii lɛ.
05 316L Dade ni bɛ ŋmɔlɔ
Ultra-low carbon dade lɛ yɛ hewalɛ kpakpa ni ekɛteɔ shi ewoɔ ŋmeii ni haa mɔ he jɔ̃ɔ ehe lɛ, ni ehi kɛha nibii ni akɛ weld fee kɛ nibii ni fãi ni mli wa lɛ feɔ, tamɔ nibii ni nyɛɔ eshiɔ ŋmeii ni yɔɔ petrochemical nibii amli lɛ.
06 316H Dade ni bɛ ŋmɔlɔ
316 dade ni sɛɛ efooo lɛ mligbɛ nine lɛ yɛ carbon mass fã ni ji 0.04%-0.10%, ni etsuɔ nii yɛ hulutsoo ni nɔ kwɔ mli lɛ hi fe 316 dade ni sɛɛ efooo lɛ nɔ lɛ.
07 317 Dade ni bɛ ŋmɔlɔ
Nibii ni haa ŋmeii shwieɔ shi kɛ ŋmeii ni shwieɔ shi lɛ hi fe 316L dade ni bɛ ŋmɔlɔ, ni akɛtsuɔ nii yɛ petrochemical kɛ organic acid ŋmeii ni nyɛɔ eshiɔ ŋmeii lɛ afeemɔ mli lɛ.
08 321 Dade ni bɛ ŋmɔlɔ
Titanium-ni akɛwo dade ni bɛ ŋmɔlɔ mli, ni akɛ titanium fataa he koni ekɛha ŋmeii ni yɔɔ ŋmeii ateŋ lɛ aya hiɛ, ni eyɛ tsɔne ni hi jogbaŋŋ ni haa hulutsoo lɛ yaa hiɛ waa lɛ, abaanyɛ akɛ ultra-low carbon austenitic dade ni bɛ ŋmɔlɔ awo najiaŋ. Kɛ jeee bei krɛdɛɛi tamɔ hulutsoo be ni mli wa loo hydrogen ni fiteɔ nii lɛ, bei pii lɛ, atsɔɔɔ akɛ akɛtsu nii.
09 347 Dade ni bɛ ŋmɔlɔ
Niobium-stabilized austenitic dade ni bɛ ŋmɔlɔ, ni akɛ niobium fataa he koni ekɛha intergranular ŋmeii ahe shiwoo lɛ aya hiɛ, ŋmeii ni nyɛɔ eshiɔ ŋmeii ni yɔɔ acid, alkali, ŋoo kɛ ŋmeii krokomɛi amli lɛ ji nɔ kome kɛ 321 dade ni bɛ ŋmeii, nitsumɔ kpakpa ni akɛtsuɔ nii, abaanyɛ akɛtsu nii akɛ ŋmeii ni nyɛɔ eshiɔ nibii kɛ Ho stetroelchether hewalɛ ni akɛtsuɔ nii yɛ . ŋmɔji amli, tamɔ nibii ni akɛwoɔ mli, paipii, nibii ni akɛtsakeɔ dɔlɛ, ŋmeii, flɔnɔɔ mli tsɔnei ni yɔɔ nitsumɔhei flɔnɔɔi amli, kɛ flɔnɔɔ mli tsɔnei ni akɛkwɛɔ dɔlɛ mli lɛ afeemɔ.
10 904L Dade ni Akɛtsuuu Nii
Akɛ dade ni bɛ ŋmɔlɔ ni fe fɛɛ lɛ ji dade ni bɛ ŋmɔlɔ ni OUTOKUMPU ni yɔɔ Finland lɛ fee lɛ eko. , Eyɛ ŋmei ni hi jogbaŋŋ yɛ ŋmei ni bɛ ŋmei tamɔ sulfuric acid, acetic acid, formic acid kɛ phosphoric acid mli, ni eyɛ ŋmei ni ŋmei kɛ ŋmei ni haa mɔ he jɔ̃ɔ ehe hu. Ehi kɛha sulfuric acid srɔtoi ni yɔɔ shishi fe 70°C, ni eyɛ ŋmei ni hi jogbaŋŋ yɛ acetic acid kɛ formic acid kɛ acetic acid ni akɛfutu mli lɛ mli yɛ ŋmei kɛ ŋmei fɛɛ ŋmei mli yɛ nɔnyɛɛ ni sa shishi.
11 440C dade ni bɛ ŋmɔlɔ
Martensitic dade ni bɛ ŋmɔlɔ ji nɔ ni wa fe fɛɛ yɛ dade ni bɛ ŋmɔlɔ ni wa kɛ dade ni ŋmɔlɔ bɛ mli lɛ ateŋ, ni eyɛ hewalɛ ni ji HRC57. Akɛtsuɔ nii titri kɛfeɔ nozzles, bearings,abɛɛvalv kores,abɛɛvalv sɛii, nine,valv tsei, kɛ ekrokomɛi.
12 17-4PH dade ni bɛ ŋmɔlɔ
Martensitic nugbɔshiimɔ ni haa dade ni bɛ ŋmɔlɔ ni mli wa ni ji HRC44 lɛ yɛ hewalɛ ni nɔ kwɔ, ŋmɔlɔ ni nyɛɔ eshiɔ ŋmɔlɔ ni anyɛɛɛ akɛtsu nii yɛ hulutsoo be ni fe 300 mli .°C. Eyɛ hewalɛ ni hi ni ekɛteɔ shi ewoɔ kɔɔyɔɔ kɛ acid loo ŋmei ni atsɔ mli lɛ. Ehewalɛ ni ekɛteɔ shi ewoɔ ŋmeii lɛ tamɔ dade 304 ni sɛɛ efooo kɛ dade ni sɛɛ efooo 430 lɛ nɔŋŋ. Akɛtsuɔ nii kɛfeɔ ŋshɔ hiɛ gbɛjianɔtoi, turbine blades,abɛɛvalv (valve mli, valve sɛii, nine, valve shishifãi) wait.
In valv tsɔne kɛ halamɔ, gbɛjianɔtoi srɔtoi, sɛɛkuu, kɛ dade ni bɛ ŋmɔlɔ ni akɛfee lɛ srɔtoi lɛ ji nɔ ni afɔɔ namɔ. Kɛji akɛ ahala lɛ, esa akɛ asusu naagba lɛ he kɛjɛ gbɛi srɔtoi anɔ tamɔ gbɛ pɔtɛɛ ni atsɔɔ nɔ atsuɔ nii, latsaa, nɔnyɛɛ, fãi ni haoɔ mɔ, ŋmeii, kɛ shika ni awoɔ.
Be ni akɛbaatsu nii: Maawɛɛ-20-2022
