Nkurɔfo taa susuw saavalve noa wɔde dade a ɛnyɛ den ayɛ na ɛrensɛe. Sɛ ɛba saa a, ebia ɛbɛyɛ dade no ho haw. Eyi yɛ adwene a ɛnteɛ a ɛwɔ ɔfã biako wɔ dade a ɛnyɛ den a ebetumi ayɛ nkannare nso wɔ tebea horow bi mu ho ntease a wonni ho.
Dade a ɛnyɛ den wɔ tumi a ɛko tia wim oxidation— .kyerɛ sɛ, ɛko tia nkannare, na ɛsan nso tumi sɛe wɔ nsɛm a acid, alkali, ne nkyene wom mu— .kyerɛ sɛ, ɛko tia nsɛe. Nanso, ne tumi a ɛko tia nsɛe no kɛse sesa esiane nnuru a ɛwɔ ne dade no ankasa mu, tebea a ɛbɔ ho ban, tebea horow a wɔde di dwuma ne nneɛma a atwa yɛn ho ahyia no su nti.
Wɔtaa kyekyɛ dade a ɛnyɛ den mu ayɛ no:
Mpɛn pii no, sɛnea dade nhyehyɛe kyerɛ no, wɔkyekyɛ dade a ɛnyɛ den a ɛnyɛ den mu akuw abiɛsa: austenitic dade a ɛnyɛ den, ferritic dade a ɛnyɛ den, ne martensitic dade a ɛnyɛ den. Wɔgyina saa dadeɛ mfitiaseɛ mfitiaseɛ mmiɛnsa yi so, wɔ ahiadeɛ ne atirimpɔ pɔtee bi ho no, wɔnya dadeɛ a ɛwɔ afã mmienu, dadeɛ a ɛnyɛ den a ɛma osuo yɛ den ne dadeɛ a wɔde afrafra kɛseɛ a dadeɛ a ɛwɔ mu no nnu 50%.
1. Austenitic dade a ɛnyɛ den.
Matrix no yɛ austenite nhyehyɛe (CY phase) a ɛwɔ anim-centered cubic crystal structure, a ɛnyɛ magnetic, na ɛyɛ den titiriw denam awɔw mu adwuma (na ebetumi ama magnetic su ahorow bi aba) stainless dade. Wɔde akontaahyɛde ahorow a ɛwɔ 200 ne 300 a ɛtoatoa so te sɛ 304 na ɛkyerɛ Amerika Dade ne Dade Asoɛe no.
2. Ferritic dade a ɛnyɛ den.
Matrix no ne sɛ a ferrite nhyehyɛe ((afã bi) a ɛwɔ nipadua no mfinimfini cubic crystal nhyehyɛe no na ɛhyɛ so, a ɛyɛ magnetic na mpɛn pii no wontumi mfa ɔhyew a wɔde yɛ adwuma no nyɛ den, nanso wobetumi de awɔw adwuma ahyɛ mu den kakra.Wɔde 430 ne 446 ahyɛ Amerika Dade ne Dade Asoɛe no agyirae.
3. Martensitic dade a ɛnyɛ den.
Matrix no yɛ martensitic nhyehyɛe (nipadua-centered cubic anaa cubic), magnetic, na wobetumi asiesie ne mfiridwuma su denam ɔhyew a wɔde yɛ adwuma so. Wɔde nɔma 410, 420 ne 440 na ɛkyerɛ Amerika Dade ne Dade Asoɛe no.Martensite wɔ austenite nhyehyɛe wɔ ɔhyew a ɛkɔ soro mu, na sɛ wɔma ɛyɛ nwini kɔ dan mu hyew mu wɔ dodow a ɛfata mu a, wobetumi adan austenite nhyehyɛe no ayɛ no martensite (kyerɛ sɛ, ɛyɛ den).
4. Austenitic-ferritic (duplex) dade a ɛnyɛ den.
Matrix no wɔ austenite ne ferrite abien-fase nhyehyɛe, na nea ɛwɔ less-phase matrix no mu no taa boro 15%. Ɛyɛ magnetic na wobetumi ahyɛ no den denam awɔw mu adwumayɛ so. 329 yɛ dade a ɛnyɛ den a wɔde yɛ duplex a wɔtaa yɛ. Sɛ wɔde toto austenitic dade a ɛnyɛ den ho a, dade a ɛwɔ afã abien no wɔ ahoɔden kɛse, na sɛnea ɛko tia intergranular corrosion ne chloride stress corrosion ne pitting corrosion no tu mpɔn kɛse.
5. Osutɔ a ɛma ɛyɛ den dade a ɛnyɛ den.
Matrix no yɛ austenite anaa martensitic structure na wobetumi ayɛ den denam osutɔ a ɛyɛ den so. Wɔde 600 series nɔma ahyɛ Amerika Dade ne Dade Asoɛe no agyirae, te sɛ 630, a ɛyɛ 17-4PH.
Sɛ yɛbɛka no ɔkwan biara so a, wɔ aduru a wɔde afra akyi no, sɛnea austenitic dade a ɛnyɛ den no tumi ko tia nsɛe no ye yiye koraa. Wɔ baabi a ɛnyɛ den pii no, wobetumi de dade a ɛnyɛ den a ɛyɛ ferritic adi dwuma. Wɔ tebea a ɛyɛ mmerɛw mu no, sɛ wɔhwehwɛ sɛ ade no nya ahoɔden a ɛkorɔn anaasɛ ɛyɛ den kɛse a, wobetumi de martensitic dade a ɛnyɛ den ne osutɔ a ɛyɛ den dade a ɛnyɛ den adi dwuma.
Dade a ɛnyɛ den a wɔtaa de di dwuma ne nea ɛwɔ mu
01 304 Dade a Ɛnyɛ Den
Ɛyɛ austenitic dade a ɛnyɛ den a wɔde di dwuma kɛse na wɔde di dwuma kɛse no mu biako. Ɛfata sɛ wɔyɛ afã horow a wɔatwe emu dɔ ne acid pipelines, nsukorade, adansi afã horow, nnwinnade ahorow ahorow, ne nea ɛkeka ho Wobetumi nso de ayɛ nnwinnade a ɛnyɛ magnetic, a ɛyɛ hyew a ɛba fam ne ɔfã bi.
02 304L Dade a Ɛnyɛ Den
Sɛnea ɛbɛyɛ a wobedi ɔhaw a ɛfa ultra-low carbon austenitic stainless dade a wɔyɛe esiane osutɔ a Cr23C6 de aniberesɛm intergranular corrosion su a 304 stainless dade wɔ tebea horow bi mu no ho dwuma no, ne sensitized tebea intergranular corrosion resistance no ye kɛse sen 304 stainless dade. Gye sɛ ahoɔden a ɛba fam kakra no, nneɛma afoforo te sɛ 321 dade a ɛnyɛ den. Wɔde di dwuma titiriw ma nnwinnade a ɛko tia nsɛe ne nneɛma a wontumi mfa nhyɛ solution treatment mu wɔ welding akyi, na wobetumi de ayɛ nnwinnade nipadua ahorow.
03 304H Dade a Ɛnyɛ Den
304 stainless steel no mu baa dwumadibea no wɔ carbon mass fraction a ɛyɛ 0.04%-0.10%, na ne ɔhyew a ɛkorɔn adwumayɛ no ye sen 304 stainless steel no.
04 316 Dade a Ɛnyɛ Den
Molybdenum a wɔde ka ho a egyina 10Cr18Ni12 dade so no ma dade no nya ahoɔden a ɛko tia yiye sɛ ɛbɛtew medium ne pitting corrosion so. Wɔ po mu nsu ne nneɛma afoforo mu no, sɛnea ɛko tia nsɛe no ye sen dade a ɛnyɛ den 304, a wɔde yɛ nneɛma a ɛko tia amena titiriw.
05 316L Dade a Ɛnyɛ Den
Ultra-low carbon dade wɔ ahoɔden pa a ɛko tia sensitized intergranular corrosion na ɛfata ma welded afã horow ne nnwinnade a thick section dimensions, te sɛ corrosion-resistant nneɛma wɔ petrochemical mfiri mu.
06 316H Dade a Ɛnyɛ Den
316 stainless steel no mu baa dwumadibea no wɔ carbon mass fraction a ɛyɛ 0.04%-0.10%, na ne ɔhyew a ɛkorɔn adwumayɛ no ye sen 316 stainless steel no.
07 317 Dade a Ɛnyɛ Den
Pitting corrosion resistance ne creep resistance ye sen 316L stainless steel, a wɔde yɛ petrochemical ne organic acid corrosion resistant mfiri.
08 321 Dade a Ɛnyɛ Den
Titanium-a ɛyɛ den austenitic dade a ɛnyɛ den, a ɛde titanium ka ho ma ɛma intergranular corrosion resistance tu mpɔn, na ɛwɔ ɔhyew a ɛkorɔn mfiridwuma su pa, betumi de asi ultra-low carbon austenitic stainless dade ananmu. Gye mmere titiriw te sɛ ɔhyew a ɛkɔ soro anaasɛ hydrogen a ɛko tia a, mpɛn pii no wɔmfa nni dwuma.
09 347 Dade a Ɛnyɛ Den
Niobium-stabilized austenitic stainless dade, de niobium ka ho ma intergranular corrosion resistance tu mpɔn, corrosion resistance wɔ acid, alkali, nkyene ne corrosive media afoforo yɛ pɛ sɛ 321 stainless dade, welding adwumayɛ pa, wobetumi de adi dwuma sɛ corrosion-resistant ade ne anti-corrosion Hot dade titiriw na wɔde di dwuma wɔ thermal tumi ne petrochemical mfuw, te sɛ nkuku, paipu, ɔhyew a wɔde sesa nneɛma, nnua a wɔde hyɛ mu, fononoo mu nsukorade a ɛwɔ mfiridwuma mu fononoo mu, ne fononoo mu nsu a wɔde kyerɛ ɔhyew ho a wɔyɛ.
10 904L Dade a Ɛnyɛ Den
Super complete austenitic stainless dade yɛ super austenitic dade a ɛnyɛ den a OUTOKUMPU na ɛyɛe wɔ Finland. , Ɛwɔ ahoɔden pa a ɛko tia nsɛe wɔ acid a ɛnyɛ oxidizing te sɛ sulfuric acid, acetic acid, formic acid ne phosphoric acid mu, na ɛsan nso wɔ ahoɔden a ɛko tia mpaapaemu nsɛe ne nhyɛsoɔ a ɛko tia. Ɛfata ma sulphuric acid dodow ahorow a ennu 70°C, na ɛwɔ ahoɔden pa a ɛko tia nsɛe wɔ acetic acid ne acid a wɔadi afra a ɛyɛ formic acid ne acetic acid wɔ dodow ne ɔhyew biara mu wɔ nhyɛso a ɛfata ase.
11 440C dade a ɛnyɛ den
Martensitic dade a ɛnyɛ den na ɛyɛ den sen biara wɔ dade a ɛnyɛ den a wotumi yɛ den ne dade a ɛnyɛ den mu, a ne den yɛ HRC57. Wɔde yɛ nozzles, bearings, .afafrantɔvalve cores, .afafrantɔvalve nkongua, nsateaa, .valve ntini, ne nea ɛkeka ho.
12 17-4PH dade a ɛnyɛ den
Martensitic precipitation hardening stainless steel a ne den yɛ HRC44 no wɔ ahoɔden a ɛkorɔn, ɛyɛ den na ɛko tia nsɛe na wontumi mfa nni dwuma wɔ ɔhyew a ɛboro 300 mu°C. Ɛwɔ tumi pa a ɛko tia nsɛe wɔ wim ne acid anaa nkyene a wɔafrafra mu. Sɛnea ɛko tia nsɛe no te sɛ nea ɛwɔ dade a ɛnyɛ den 304 ne dade a ɛnyɛ den 430 de no. Wɔde yɛ mpoano asɛnka agua, turbine blades, .afafrantɔvalve (valve cores, valve nkongua, nsateaa, valve ntini) wait.
In valve nhyehyɛe ne nea wɔpaw, nhyehyɛe ahorow, ntoatoaso, ne dade a ɛnyɛ den a wɔde yɛ nneɛma ahorow no taa hyia. Sɛ wɔrepaw a, ɛsɛ sɛ wosusuw ɔhaw no ho fi akwan horow pii so te sɛ ɔkwan pɔtee a wɔfa so yɛ adwuma, ɔhyew, nhyɛso, afã horow a wɔahyɛ no den, nsɛe, ne ɛka.
Bere a wɔde bɛkyerɛw: Jul-20-2022
