Hauv kuv 20 xyoo ntawm kev xa tawm stainless hlau, zaj dab neeg mob siab tshaj plaws uas kuv tau hnov los ntawm cov neeg siv khoom tshiab yog ib txwm zoo ib yam:
"Kuv yuav ib pawg ntawm ' pheej yig dua'304 pajlos ntawm lwm tus neeg muag khoom. Peb lub hlis tom qab, kuv cov neeg siv khoom yws lawv tau xeb. Nws tau dhau los ua Qib 201. "
Qhov pom qhov sib txawv ntawm polished Qib 304 thiab Qib 201 yog yuav luag xoom. Nkawd ob leeg ci. Lawv ob leeg tsis yog-magnetic (feem ntau). Tab sis tus nqi sib txawv yog qhov loj, thiab qhov sib txawv ntawm qhov kev ua tau zoo yog qhov loj dua.
Qee cov neeg muag khoom tsis ncaj ncees sib pauv cov qib no kom nce lawv cov nyiaj tau los. Ua ib tus neeg yuav khoom, koj yuav tsum paub txog kev tiv thaiv koj lub lag luam.
Nov yog cov lus qhia kawg rau kev pom qhov sib txawv siv tshuaj Reagents thiab PMI Spectrometers.
Yog vim li cas qhov sib pauv tshwm sim: "Nickel" ntxiab
Yuav kom nkag siab qhov cuav, koj yuav tsum nkag siab txog chemistry.
304 Stainless Hlau: Muaj 8% Nickel. Nickel yog kim, tab sis nws tsim ib txheej tiv thaiv uas tiv thaiv xeb.
201 Stainless Hlau: Muaj tsuas yog ~ 1% Nickel. Yuav kom txuag tau tus nqi, manufacturers hloov Nickel nrog Manganese.
Lub txim: Manganese tsis ruaj khov. Qib 201 yuav xeb sai sai hauv qhov chaw ntub lossis sab nraum zoov. Qib 304 yuav kav ntau xyoo.
Yog li, ua li cas koj ntes tus cuav?
Txoj Kev 1:Kev Xeem "Manganese Liquid" (Quick & Cheap)
Qhov no yog qhov kev sim ntau tshaj plaws siv hauv Suav teb. Nws suav nrog cov kua ntsuas tshwj xeeb (feem ntau hu ua "N8" lossis "Stainless Steel Identification Fluid") uas cuam tshuam nrog Manganese.
Yuav ua li cas:
- Ntxuav ib qho chaw me me rau ntawm qhov chaw steel.
- Muab ib tee ntawm cov kua ntsuas rau ntawm cov hlau.
- Tos li 1-2 feeb.
Cov txiaj ntsig:
- Yog tias nws yog tiag 304: Cov tee dej tseem pom tseeb lossis hloov xim daj heev. Tsis muaj tshuaj tiv thaiv vim Manganese tsawg.
- Yog tias nws yog Fake (201): Cov tee dej yuav tig ib lub cib - liab lossis liab liab xim yuav luag tam sim ntawd.
Pro Tip: Qhov kev ntsuam xyuas no zoo heev rau kev kuaj xyuas sai, tab sis nws tsis yog 100% cov pov thawj tshawb fawb rau rooj plaub hauv tsev hais plaub. Rau qhov ntawd, koj xav tau Txoj Kev 2.
Txoj Kev 2: PMI Spectrometer Test (Tus Qauv Txuj Ci)
Yog tias koj mus xyuas lub Hoobkas lossis tshuaj xyuas cov khoom xa tuaj loj, koj yuav tsum thov PMI (Positive Material Identification) test. Qhov no siv ib rab phom X-ray fluorescence (XRF) handheld.
Yuav ua li cas nyeem qhov screen:
Tsis txhob cuam tshuam los ntawm cov hlau (Fe) cov ntsiab lus. Saib ncaj nraim ntawm ob tus lej no:
Nickel (Ni):
- 304: Yuav tsum Ntau dua lossis sib npaug li 8.0%
- 201: Yuav yog <1.5%
Manganese (Mn):
- 304: Yuav yog <2.0%
- 201: Yuav> 5.5% (feem ntau mus txog 10%)
Yog tias rab phom qhia Nickel ntawm 1.2%, uas tsis yog 304, txawm tias tus neeg muag khoom qhia koj li cas.
Txoj Kev 3: Qhov Kev Xeem Spark (Lub Tsev Kawm Ntawv Qub Txoj Kev)
Yog tias koj tsis muaj tshuaj lom neeg lossis $ 20,000 spectrometer, koj tuaj yeem siv lub tshuab sib tsoo. Qhov no yuav tsum muaj kev paub txog qhov muag.
Sib tsoo ntug ntawm tus qauv.
304 Sparks: Cov sparks yog streamlined, yooj yim, thiab tsis heev ntom.
201 Sparks: Vim muaj Manganese thiab Carbon cov ntsiab lus siab, cov sparks yog "explosive." Lawv ceg tawm wildly thiab saib ntau denser, zoo li foob pob hluav taws.
304 vs . 201 Cov lus sib piv
Peb cog lus rau koj
Ntawm Gnee Steel, peb nkag siab tias koj lub koob npe nrov nyob ntawm qhov zoo ntawm cov khoom koj muag. Peb tsis hloov cov qib. Puas tau.
Rau txhua qhov kev txiav txim ntawm 304/304L lossis 316/316L, peb muab:
- Daim Ntawv Pov Thawj Tag Nrho Mill Test (MTC) sib piv tus lej Kub.
- PMI Kev Tshawb Fawb Video ntawm koj cov khoom tshwj xeeb ua ntej crating.
- Thib peb-Kev Pabcuam Kev Tshawb Fawb (SGS/BV) thaum twg koj thov.
Tsis txhob twv nrog qhov zoo.
Xav tau ib tus neeg muag khoom txhim khu kev qha rau 304 Stainless Hlau?
Email:ru@gneesteelgroup.com
Xov tooj: +8615824687445