Yuav Ua Li Cas Paub Cov Hlau Stainless

Stainless hlau yog ib qho ntawm cov khoom siv ntau yam thiab siv dav hauv ntau yam kev lag luam - suav nrog kev tsim kho, tsheb, kev ua zaub mov, thiab kev lag luam marine. Tab sis nyob rau hauv ntau qhov xwm txheej tiag tiag, txheeb xyuas seb cov hlau puas yog stainless hlau - thiab txiav txim siab qhov twgqibntawm stainless hlau nws yog - tuaj yeem nyuaj.

Yog koj puas tau nug koj tus kheej,yuav ua li cas txheeb xyuas stainless hlau, phau ntawv qhia no yuav taug kev koj los ntawm txoj kev ntseeg siab tshaj plaws. Los ntawm kev kuaj pom yooj yim mus rau kev sim siab, peb yuav pab koj paub qhov txawv ntawm cov hlau tsis muaj hlau los ntawm lwm cov hlau thiab txheeb xyuas nws cov khoom tshwj xeeb nrog kev ntseeg siab.

Kab lus tob no nthuav tawm los ntawmsakysteel ua, yog lub ntiaj teb kev lag luam ntawm cov khoom lag luam stainless hlau, muab cov ntaub ntawv qib siab zoo thiab kev txhawb nqa rau kev thov kev lag luam.

Vim li cas thiaj paub tias Stainless Hlau tseem ceeb?

Paub seb cov hlau puas yog stainless hlau - thiab qib twg nws yog - tuaj yeem pab koj:

• Xaiv cov khoom tsim nyog rau fabrication lossis kho

• Xyuas kom corrosion kuj thiab lub zog

• Ua raws li cov qauv kev lag luam thiab cov ntawv pov thawj

• Tsis txhob raug nqi ua yuam kev lossis kev nyab xeeb

Cov qib stainless hlau sib txawv sib txawv hauv kev tiv thaiv corrosion, hlau nplaum, hardness, thiab kub tsis kam, yog li kev txheeb xyuas kom zoo yog qhov tseem ceeb rau kev ua haujlwm thiab kev nyab xeeb.

Hom Hom Stainless Hlau Koj tuaj yeem ntsib

Ua ntej dhia mus rau hauv cov txheej txheem kev txheeb xyuas, nws yuav pab kom paub txog cov tsev neeg stainless hlau:

• Austenitic (300 series):Tsis-sib nqus, zoo heev corrosion kuj (xws li, 304, 316)

• Ferritic (400 series):Sib nqus, nruab nrab corrosion kuj (xws li, 409, 430)

• Martensitic (400 series):Sib nqus, muaj zog dua, siv hauv cutlery thiab cov cuab yeej (xws li, 410, 420)

• Duplex:Cov qauv sib xyaw, siab zog thiab corrosion kuj (xws li, 2205)

sakysteel uamuaj ntau yam kev xaiv ntawm cov hlau tsis muaj steel nyob rau hauv daim ntawv, phaj, yeeb nkab, thiab bar daim ntawv-txhua tus engineered rau kev siv tshwj xeeb.

1. Kev tshuaj xyuas qhov muag

Txawm hais tias tsis yog qhov tseeb ntawm nws tus kheej, cov ntsiab lus pom tau tuaj yeem pab koj ua qhov kev kawm paub.

Nrhiav:

• Xim thiab tiav:Stainless hlau feem ntau muaj ib tug silver-grey tsos nrog ib tug du, reflective los yog txhuam tiav.

• Rust Resistance:Stainless hlau resists xeb zoo dua me me los yog carbon hlau. Yog tias qhov chaw huv si thiab tsis muaj xeb hauv qhov chaw noo, nws yuav zoo li tsis muaj xeb.

• Cov cim los yog Stamps:Nrhiav cov lej cim xws li "304", "316", lossis "430" etched lossis stamped rau saum npoo hlau.

Nco tseg:Polished aluminium tuaj yeem zoo sib xws, yog li kev tshuaj xyuas qhov muag yuav tsum tau ua raws li kev sim ntxiv.

2. Magnet Test

Covhlau nplaum kuajyog ib txoj hauv kev yooj yim thiab ceev kom paub qhov txawv ntawm qee hom stainless hlau.

Yuav ua li cas:

• Siv cov hlau nplaum me me thiab muab nws tawm tsam cov hlau.

• Yog hlausib nqus hlau nplaum, nws tuaj yeem yog ferritic (430) lossis martensitic (410, 420) stainless hlau.

• Yog cov hlau nplaumtsis lo, lossis tsuas yog tsis muaj zog, nws yuav yog austenitic stainless hlau (304 lossis 316).

Daim ntawv tseem ceeb:Qee cov qib austenitic yuav dhau los ua cov hlau nplaum me ntsis tom qab ua haujlwm txias (khoov, machining), yog li qhov kev ntsuam xyuas hlau nplaum yuav tsum tsis yog koj txoj kev nkaus xwb.

3. Ntsuas ntsuas

Txoj kev no suav nrog kev sib tsoo ib feem me me ntawm cov hlau thiab saib xyuas lub txim taws. Nws yog feem ntau siv hauv cov khw muag khoom hlau.

Spark cwj pwm:

• Stainless hlau:Luv luv, reddish-txiv kab ntxwv sparks nrog tsawg tawg piv rau carbon steel

• Me me steel:Ci daj sparks nrog ntau tawg

• Cov cuab yeej steel:Ntev, dawb sparks nrog forked tails

Tsuas yog ua qhov kev sim no hauv qhov chaw nyab xeeb nrog kev tiv thaiv qhov muag kom raug.sakysteel uapom zoo rau txoj kev no rau cov kws tshaj lij kev cob qhia nkaus xwb.

4. Kev kuaj tshuaj

Cov tshuaj ntsuam xyuas tuaj yeem paub meej tias cov hlau puas yog stainless hlau thiab qee zaum txawm txiav txim siab qib tshwj xeeb.

a. Nitric Acid Test

Stainless hlau yog resistant rau nitric acid, thaum carbon hlau tsis yog.

• Siv ob peb tee ntawmconcentrated nitric acidmus rau saum npoo hlau.

• Yog hlautsis hnov mob, nws zoo li stainless hlau.

• Yog nwsnpuas los yog discolors, nws tuaj yeem yog carbon hlau.

b. Molybdenum Test

Siv los sib txawv ntawm304thiab316stainless hlau. 316 muaj molybdenum rau txhim kho corrosion kuj.

• Siv cov khoom siv kuaj molybdenum (muaj muag).

• Siv cov reagent rau saum npoo hlau.

• A xim hloovqhia tias muaj molybdenum (316).

Cov kev ntsuam xyuas no muaj txiaj ntsig zoo rau kev txheeb xyuas qhov tseeb hauv kev tswj xyuas qhov zoo lossis thaum lub sijhawm tshuaj xyuas cov khoom.

5. XRF Analyzer (Advanced)

X-ray fluorescence (XRF)analyzers yog handheld pab kiag li lawm uas instantly txheeb xyuas covcov tshuaj muaj pes tsawg leegntawm stainless hlau.

• Muab tag nrho cov alloy tawg xws li chromium, nickel, molybdenum, thiab lwm yam

• Siv tau rau kev txheeb xyuas thiab ntawv pov thawj hauv kev lag luam ib puag ncig

• Feem ntau siv los ntawm cov neeg xa khoom hlau, cov khoom siv rov ua dua tshiab, thiab cov neeg soj ntsuam

sakysteel uasiv XRF xeem los txheeb xyuas cov khoom muaj pes tsawg leeg thiab xyuas kom meej rau txhua qhov khoom xa tuaj.

6. Kev Ntsuas Qhov Ntsuas thiab Qhov Ntsuas

Stainless hlau yog denser thiab hnyav dua txhuas los yog lwm yam hlau alloys.

Sib piv:

• Ntsuas qhov ntim paub (piv txwv li, 1 cm³) ntawm cov khoom

• Ntsuas nws thiab piv rau qhov theoretical ntom ntawm stainless hlau (~ 7.9 g / cm³)

• Yog tias sib dua, nws yuav yog txhuas (qhov ceev ~ 2.7 g / cm³)

Qhov kev ntsuam xyuas no yuav pab kom tsis txhob muaj qhov tsis zoo ntawm polished aluminium li stainless hlau.

7. Corrosion Test (Lub Sijhawm Raws)

Yog tias cov hlau raug ntsia rau hauv ib puag ncig corrosive (xws li, marine lossis chemical plant), saib seb nws ua haujlwm li cas thaum lub sijhawm:

• 304 stainless hlautej zaum yuav xeb hauv thaj chaw nplua nuj chloride

• 316 stainless hlauyuav nyob twj ywm vim molybdenum

• Me me hlauyuav pom pom xeb tsis pub dhau hnub

Qhov no tsis yog qhov zoo tshaj plaws rau kev txheeb xyuas ceev tab sis pab kom muaj txiaj ntsig ntawm kev ua haujlwm ntawm cov khoom siv.

Thaum Yuav Hu Rau Tus Kws Lij Choj

Yog tias koj tsis paub meej txog koj cov hlau tus kheej, tshwj xeeb tshaj yog rau cov ntawv thov tseem ceeb (cov hlab ntsha siab, cov khoom noj khoom haus, kev teeb tsa sab nrauv), nco ntsoov sab laj nrog lub chaw kuaj hlau lossis cov chaw muag khoom xws lisakysteel ua.

Lawv tuaj yeem muab:

• Cov ntaub ntawv pov thawj (MTC)

• Kev txheeb xyuas qib

• Cov kws tshaj lij xaiv raws li cov qauv kev lag luam (ASTM, EN, ISO)

Summary of Identification Methods

Xaus: Yuav ua li cas txheeb xyuas Stainless Hlau nrog Kev Ntseeg

Kev txheeb xyuas cov hlau stainless kom raug yog qhov tseem ceeb rau kev ua kom cov khoom ua tau zoo, ua raws, thiab kev nyab xeeb. Nrog rau kev sib xyaw ua ke ntawm cov kev ntsuam xyuas yooj yim xws li hlau nplaum thiab qhov hnyav, thiab cov txheej txheem siab heev xws li tshuaj ntsuam xyuas lossis XRF scanning, koj tuaj yeem txiav txim siab tias cov hlau yog stainless hlau - thiab txawm tias ntsuas qib.

Txawm hais tias koj tab tom kho cov khoom noj khoom haus, vuam cov khoom siv, lossis cov khoom siv marine fittings,qhov tseeb stainless hlau txheeb xyuas qhov teeb meem.Thiab thaum nws los txog rau kev nrhiav cov khoom zoo stainless hlau,sakysteel uayog lub npe kws tshaj lij ntseeg.