15 Txoj hauv kev los txheeb xyuas Fake thiab Shoddy Steel

Hauv kev lag luam uas muaj kev nyab xeeb, durability, thiab zoo yog qhov tseem ceeb, sivhlau tiagtsis yog ib qho teeb meem ntawm kev nyiam - nws yog qhov tsim nyog. Hmoov tsis zoo, cov khoom cuav thiab cov khoom tsis zoo steel yog nce nkag mus rau hauv kev ua lag luam, tshwj xeeb tshaj yog nyob rau hauv kev tsim kho, tsim khoom, thiab engineering sectors. Sivfake los yog shoddy steeltuaj yeem ua rau muaj kev puas tsuaj loj, kev puas tsuaj ntawm cov qauv, thiab kev poob nyiaj txiag. Raws li tus neeg muag khoom ntseeg siab,sakysteel uantseeg hauv kev qhia cov neeg yuav khoom thiab engineers txog yuav ua li cas txhawm rau txheeb xyuas thiab zam cov hlau tsis zoo. Hauv kab lus no, peb sau15 txoj hauv kevtxhawm rau txheeb xyuas cov hlau tsis raug lossis tsis zoo ua ntej nws lig dhau lawm.

1. Tshawb xyuas cov Chaw Tsim Khoom Cov Cim

Cov khoom siv hlau tiag feem ntau muajkom meej meej stamped cim, suav nrog:

• Lub tuam txhab lub npe lossis lub logo

• Qib lossis tus qauv (xws li ASTM A36, SS304)

• Kub tooj los yog batch tooj

Hlau cuavfeem ntau tsis muaj cov cim kom raug lossis qhia tsis sib xws, smudged, lossis tsis raug formatted identification.

2. Tshawb xyuas qhov chaw tiav

Authentic steel khoom feem ntau muaj auniform, du ntonrog tswj mill scale los yog coatings.

Cov cim ntawmhlau tsis zoosuav nrog:

• Rough, pitted, los yog xeb nto

• Tsis sib npaug

• Pom pom tawg los yog delaminations

At sakysteel ua, tag nrho cov ntaub ntawv raug kuaj pom ua ntej xa khoom.

3. Txheeb xyuas qhov tseeb ntawm Dimensional

Siv calipers lossis micrometers los ntsuas:

• Txoj kab uas hla

• Thickness

• Ntev

Hlau cuavfeem ntau deviates los ntawm qhov ntev, tshwj xeeb tshaj yog nyob rau hauv qis-nqi rebar los yog structural seem.

4. Thov daim ntawv pov thawj khoom siv (MTC)

Tus neeg muag khoom raug cai yuav tsum muab ib qhoEN 10204 3.1 lossis 3.2 MTC, nthuav dav:

• Tshuaj muaj pes tsawg leeg

• Mechanical zog

• Kev kho cua sov

• Cov qhabnias xeem

Tsis muaj daim ntawv pov thawj lossis cov ntaub ntawv forged yog tus chij liab loj.

5. Ua ib qho Kev Ntsuas Hluav Taws Xob

Siv lub log sib tsoo, saib cov pob zeb ua los ntawm cov hlau:

• Cov pa roj carbon steel: Ntev, dawb los yog daj daj

• Stainless hlau: luv luv, liab los yog txiv kab ntxwv sparks nrog tsawg tawg

Cov qauv tsis sib xwstej zaum yuav qhia tau tias cov khoom yog mislabeled los yog alloyed incorrectly.

6. Ua Kev Xeem Magnet

• Cov pa roj carbon steelyog magnetic

• Austenitic stainless hlau (304/316)feem ntau tsis yog magnetic

Yog tias cov hlau tsis sib nqus cov lus teb tsis sib xws rau qib uas xav tau, nws tuaj yeem yog cuav.

7. Txheeb xyuas qhov hnyav

Ntsuas tus qauv ntev thiab sib piv nrog qhov ntsuas qhov ntsuas raws li qhov ceev. Deviations yuav qhia tau tias:

• Hollow los yog porous seem

• Qib khoom tsis raug

• Qhov loj me me

Authentic steel los ntawmsakysteel uaib txwm phim kev lag luam kam rau ua.

8. Tshawb xyuas Weldability

Cov hlau tsis zoo lossis qib qis feem ntau ua haujlwm tsis zoo hauv vuam, ua rau:

• Cov kab nrib pleb ze ntawm thaj chaw weld

• Tshaj tawm ntau dhau

• Kev tsis sib haum xeeb

Ib qho kev ntsuas me me tuaj yeem nthuav tawm cov qauv tsis xws luag hauv vib nas this.

9. Nrhiav kev suav nrog thiab qhov tsis xws luag

Siv lub portableUltrasonic kuaj ntaus ntawvlos yog X-ray scanner los kuaj xyuas:

• Sab hauv tawg

• Slag suav nrog

• Laminations

Cov kev tsis zoo no feem ntau tshwm sim hauv cov hlau cuav lossis cov khoom siv rov ua dua tshiab nrog kev tswj tsis tau zoo.

10. Kuaj qhov Hardness

Siv aPortable hardness tester, xyuas kom meej tias cov khoom sib tw rau qhov xav tau hardness ntau yam (xws li, Brinell lossis Rockwell).

Cov nqi hardness tsawg dhau los yog siab tshaj rau qib uas tau tshaj tawm yog cov cim ntawm kev hloov pauv.

11. Tshawb xyuas Edge Quality

Cov khoom siv hlau tiag muajhuv-txiav, burr-dawb npoolos ntawm txoj kev shearing los yog dov.

Fake lossis recycled steel tej zaum yuav qhia:

• Jagged ntug

• Thaum tshav kub kub discoloration

• Chip los yog tawg sab

12. Ntsuas Corrosion Resistance

Yog tias koj tab tom cuam tshuam nrog stainless hlau, ua antsev tsuag los yog vinegar kuajntawm ib qho me me:

• Qhov tseeb stainless yuav tsum tiv thaiv corrosion

• Fake stainless yuav tsim xeb hauv cov xuab moos lossis hnub

sakysteel uamuab corrosion-resistant stainless cov khoom nrog tag nrho traceability.

13. Paub meej nrog kev kuaj mob thib peb

Thaum tsis ntseeg, xa ib qho qauv mus rau ib qhoISO-certified kuaj kuajrau:

• Spectrochemical tsom xam

• Kev ntsuam xyuas lub zog tensile

• Kev ntsuam xyuas microstructure

Kev txheeb xyuas ywj pheej yog qhov tseem ceeb rau cov haujlwm loj lossis kev pheej hmoo siab.

14. Tshawb xyuas tus neeg muab khoom lub npe

Ua ntej yuav khoom:

• Tshawb xyuas lub tuam txhab cov ntawv pov thawj (ISO, SGS, BV)

• Tshawb xyuas thiab kev lag luam keeb kwm

• Nrhiav kom paub cov ntaub ntawv tiv tauj thiab chaw nyob ntawm lub cev

Unknown los yog untraceable sellers yog ntau qhov chaw ntawmhlau cuav.

sakysteel uayog ib lub chaw tsim khoom muaj ntawv pov thawj nrog xyoo ntawm kev xa tawm thoob ntiaj teb.

15. Sib piv Tus Nqi Ua Lag Luam

Yog tus nqi muabdeb tshaj tus nqi lag luam, nws yuav zoo dhau los ua qhov tseeb.

Cov neeg muag khoom cuav feem ntau ntxias cov neeg yuav khoom nrog tus nqi pheej yig tab sis xa cov khoom tsis zoo. Ib txwm sib piv cov lus los ntawmntau qhov chaw ntseeg.

Cov lus piav qhia