Cov hlau twg tsis lo rau lub hlau nplaum?

Muaj coob tus neeg xav tsis thoob thaum paub tias tsis yog txhua hom hlau yog hlau nplaum. Qhov tseeb, qee cov hlau tsis lo rau hlau nplaum kiag li. Cov yam ntxwv no muaj txiaj ntsig zoo rau kev lag luam xws li kev tsim kho dej hiav txwv, kev ua zaub mov noj, cov khoom siv kho mob, thiab cov khoom siv hluav taws xob, qhov twg yuav tsum zam kev cuam tshuam lossis kev ua qias tuaj ntawm hlau nplaum.

Yog li, hom hlau ua dab tsitsis txhob lo rau lub hlau nplaumCov lus teb nyob rau hauv nws cov qauv sab hauv thiab cov tshuaj lom neeg sib xyaw. Hauv tsab xov xwm no, peb yuav piav qhia vim li cas qee cov hlau tsis yog hlau nplaum, cov qib twg zoo tshaj plaws, thiab yuav ua li cas xaiv cov khoom siv zoo rau koj daim ntawv thov. Ua tus neeg muag khoom stainless hlau uas ntseeg siab,SAKYSTEELmuaj ntau yam hlau tsis muaj hlau nplaum uas tsim los kom muaj kev ua tau zoo, kev ntseeg siab, thiab kev tiv thaiv corrosion thoob ntiaj teb.

1. Nkag Siab Vim Li Cas Qee Cov Hlau Nplaum Rau Cov Hlau Nplaum

Yuav kom nkag siab tias cov hlau twg tsis lo rau ntawm lub hlau nplaum, peb yuav tsum xub nkag siabvim li cas feem ntau cov hlau yog sib nqus.
Hlau feem ntau yog ua los ntawm hlau, uas yog ib txwm muaj hlau nplaum vim nwslub cev-centered cubic (BCC)cov qauv siv lead ua uas tso cai rau cov chaw sib nqus kom sib dhos tau yooj yim.

Txawm li cas los xij, thaum nickel lossis lwm yam khoom sib xyaw ntxiv, cov qauv siv lead ua hloov mus rau ib qholub ntsej muag-centered cubic (FCC)daim ntawv, uas tsis pub sib nqus sib dhos. Qhov no yog cov qauv pom nyob rau hauvcov hlau tsis xeb austenitic, uas yog cov hom hlau tsis sib nqus tseem ceeb.

2. Kev Tshawb Fawb Txog Kev Sib Nqus Hauv Cov Hlau Stainless

Muaj peb pawg tseem ceeb ntawm cov hlau tsis xeb raws li lawv cov qauv siv lead ua thiab tus cwj pwm sib nqus:

• Cov Hlau Stainless Austenitic (Tsis yog hlau nplaum):
  Muaj cov qauv FCC thiab cov ntsiab lus nickel siab, ua rau lawv tsis muaj hlau nplaum txawm tias nyob rau qhov kub qis.

• Cov Hlau Stainless Ferritic (Sib Nqus):
  Muaj cov qauv BCC thiab muaj chromium tab sis me ntsis lossis tsis muaj nickel, ua rau lawv muaj zog magnetic.

• Cov Hlau Stainless Martensitic (Sib Nqus):
  Muaj cov pa roj carbon thiab chromium ntau, kho tau kub, thiab muaj cov khoom sib nqus muaj zog.

Yog li ntawd,cov hlau tsis xeb austeniticyog cov hlau uastsis txhob lo rau lub hlau nplaumnyob rau hauv lawv cov mob annealed.

3. Cov Hlau Uas Tsis Lo Rau Cov Hlau Nplaum

A. Hom 304 Stainless Steel

Cov hlau tsis xeb feem ntau hauv ntiaj teb, 304 muaj kwv yees li 18% chromium thiab 8% nickel.
Nws cov qauv yog austenitic tag nrho thiab yog li ntawd tsis yog magnetic. Txawm li cas los xij, tom qab ua haujlwm txias lossis vuam, nws yuav tsim cov lus teb magnetic me ntsis vim yog ib feem ntawm kev hloov pauv mus rau hauv martensite.

Cov ntawv thov:Cov khoom siv hauv chav ua noj, cov thoob dej, cov kav dej, thiab cov qauv vaj tse.

B. Hom 316 Stainless Steel

Hu ua "marine grade," 316 stainless hlau muaj 16–18% chromium, 10–14% nickel, thiab 2–3% molybdenum. Qhov ntxiv molybdenum ua rau kom tiv taus xeb, tshwj xeeb tshaj yog tiv taus chlorides thiab dej ntsev. Nws tseem tsis muaj hlau nplaum txawm tias tom qab ua lossis siv tshuab lawm, ua rau nws zoo tagnrho rau cov chaw uas yuav tsum tsis txhob muaj kev cuam tshuam hlau nplaum.

Cov ntawv thov:Cov khoom siv hauv hiav txwv, cov khoom siv ua tshuaj lom neeg, thiab cov cuab yeej kho mob.

C. Hom 310 Stainless Hlau

Cov hlau tsis xeb no uas tiv taus cua sov, muaj 25% chromium thiab 20% nickel, muaj ob qho tib si lub zog kub thiab cov yam ntxwv tsis yog hlau nplaum.

Cov ntawv thov:Cov cub tawg, cov hlawv, thiab cov hloov pauv cua sov.

D. Hom 321 Stainless Hlau

Ruaj khov nrog titanium, 321 stainless hlau tswj nws cov qauv tsis sib nqus txawm tias tom qab vuam, ua rau nws yog qhov kev xaiv zoo rau kev siv tshuaj lom neeg hauv aerospace thiab kev siv tshuaj kub siab.

Cov ntawv thov:Cov kav dej tso pa tawm, cov khoom siv ntawm lub cav dav hlau, thiab cov chaw tsim tshuaj lom neeg.

E. Hom 904L Stainless Hlau

Ib hom hlau stainless hlau zoo tshaj plaws uas muaj nickel ntau heev (24–26%) thiab molybdenum (4–5%), ntxiv rau me ntsis tooj liab kom tiv taus kua qaub.
Nws yogtsis muaj hlau nplaum kiag litxawm tias tom qab ua ntau yam los yog vuam ua haujlwm.

Cov ntawv thov:Cov platforms offshore, cov khoom siv tshuaj, cov reactors tshuaj, thiab cov khoom kim heev.

4. Dab tsi ua rau Austenitic Stainless Steel tsis yog hlau nplaum

Cov hlau Austenitic stainless hlau tau ruaj khov los ntawmnpib tsib, uas hloov kho cov qauv hlau los ntawm BCC (sib nqus) mus rau FCC (tsis yog sib nqus).
Tus qauv FCC tsis tso cai rau kev sib phim ntawm cov chaw sib nqus, uas tiv thaiv cov hlau kom tsis txhob lo rau cov hlau nplaum.

Tsis tas li ntawd, cov ntsiab lus zoo linitrogenthiabmanganesetuaj yeem ua kom cov qauv tsis yog hlau nplaum no ruaj khov ntxiv. Yog vim li cas cov qib xws li 316 thiab 904L, uas muaj cov ntsiab lus nickel thiab molybdenum ntau dua, tseem tsis yog hlau nplaum txawm tias tom qab ua tiav ntau lawm.

5. Cov Ntawv Thov Uas Yuav Tsum Tau Cov Hlau Uas Tsis Yog Hlau Sib Nqus

A. Cov Khoom Siv Kho Mob thiab Cov Khoom Siv Kuaj Mob

Cov hlau tsis yog hlau nplaum yog qhov tseem ceeb rau MRI scanners, cov cuab yeej phais, thiab cov rooj tog hauv tsev kho mob, qhov twg txawm tias me me ntawm cov hlau nplaum tuaj yeem ua rau muaj kev cuam tshuam lossis kev nyab xeeb.

B. Cov Qauv Dej Hiav Txwv thiab Offshore

Hauv dej hiav txwv lossis dej ntsev, cov qib tsis muaj hlau nplaum zoo li 316 thiab 904L muab kev tiv thaiv zoo heev rau kev xeb thiab zam kev rub cov khib nyiab lossis cov khoom xeb los ntawm hlau nplaum.

C. Kev Lag Luam Ua Khoom Noj

Cov hlau tsis muaj hlau nplaum ua kom huv si, tiv thaiv kev xeb, thiab tiv thaiv cov hlau tsis huv los ntawm cov teb sib nqus thaum lub sijhawm tsim khoom.

D. Khoom Siv Hluav Taws Xob thiab Kev Caij Dav Hlau

Cov khoom tsis yog hlau nplaum tiv thaiv kev cuam tshuam ntawm lub teeb liab, ua kom muaj qhov tseeb hauv cov txheej txheem navigation, sensors, thiab cov cuab yeej precision.

E. Cov Khoom Siv Tshuaj thiab Petrochemical

Hauv cov tshuaj reactors thiab cov kav dej uas qhov kev tiv thaiv corrosion thiab kev huv yog qhov tseem ceeb, cov hlau tsis muaj hlau nplaum ua haujlwm tau zoo nyob rau hauv cov xwm txheej hnyav.

6. Yuav Ua Li Cas Txheeb Xyuas Cov Hlau Uas Tsis Yog Hlau Sib Nqus

Ib qho kev sim hlau nplaum yooj yim tuaj yeem qhia qhov txawv:

• Tsis muaj kev nyiam:Tsis muaj hlau nplaum kiag li (austenitic).

• Kev nyiam me ntsis:Kev hloov pauv ib nrab vim yog ua haujlwm txias lossis vuam.

• Lub zog nyiam:Sib nqus (ferritic lossis martensitic).

Rau kev txheeb xyuas kev lag luam, kev ntsuas permeability ntawm lub zog sib nqus tuaj yeem ntsuas tau siv cov khoom siv siab heev los paub meej tias cov khoom siv puas ua tau raws li cov lus qhia rau kev ua haujlwm tsis yog hlau nplaum.

7. Kev Sib Piv Cov Hlau Uas Tsis Yog Hlau Sib Nqus Thiab Cov Hlau Sib Nqus