Q: Dab tsi yog cov khoom soj ntsuam zoo ntawm Q355 phaj?
A: Cov khoom siv tshuaj ntsuam xyuas zoo yog:
Kev txheeb xyuas tshuaj muaj pes tsawg leeg: txheeb xyuas cov ntsiab lus ntawm C, Si, Mn, P, S thiab lwm yam.
Mechanical Properties Test: tensile test, yield zog test, elongation test, impact test.
Dimension soj ntsuam: ntes thickness, dav, ntev, flatness, thiab lwm yam.
Kev tshuaj xyuas qhov zoo ntawm qhov chaw: xyuas seb puas muaj qhov tsis xws luag xws li cov kab nrib pleb, folds, khawb, thiab suav nrog ntawm qhov chaw.
Tsis yog-kev kuaj kev puas tsuaj: kev kuaj ultrasonic (UT), kuaj cov hlau nplaum sib nqus (MT), kev ntsuas nkag siab (PT), thiab lwm yam., txhawm rau txheeb xyuas qhov tsis xws luag sab hauv lossis qhov chaw.**
Q: Kev kuaj ultrasonic (UT) ntawm Q355 phaj yog dab tsi?
A: Kev kuaj ultrasonic yog ib qho kev sim uas tsis yog -kev puas tsuaj. Nws siv ultrasonic nthwv dej los nthuav tawm hauv lub phaj. Thaum cov ultrasonic nthwv dej ntsib cov teeb meem sab hauv (xws li cov kab nrib pleb, suav nrog, porosity), lawv yuav cuam tshuam, refracted los yog tawg. Los ntawm kev txheeb xyuas cov teeb liab cuam tshuam, txoj hauj lwm, qhov loj thiab cov duab ntawm qhov tsis xws luag tuaj yeem txiav txim siab. Q355 daim hlau siv rau hauv cov qauv tseem ceeb (xws li txuas hniav, cov hlab ntsha siab) feem ntau yuav tsum tau xeem ultrasonic.
Q: Dab tsi yog qhov yuav tsum tau flatness ntawm Q355 phaj?
A: According to GB/T 3274-2017, the flatness tolerance of Q355 plate is: for plates with thickness ≤10mm, the flatness tolerance is ≤3mm/m; for plates with thickness 10-40mm, the flatness tolerance is ≤2mm/m; for plates with thickness >40mm, lub flatness kam rau ua yog tsawg dua los yog sib npaug rau 1mm / m. Rau cov phaj uas yuav tsum tau flatness siab dua, peb tuaj yeem muab cov kev pab cuam leveling.
Q: Dab tsi yog qhov yuav tsum tau ua ntawm Q355 phaj?
A: Qhov saum npoo ntawm Q355 phaj yuav tsum du thiab huv si, tsis pom qhov tsis xws luag xws li tawg, folds, khawb, suav nrog, thiab npuas. Qhov chaw me me (xws li khawb me ntsis, qhov pits) uas tsis cuam tshuam rau kev siv tau tso cai, tab sis qhov tob ntawm qhov tsis xws luag yuav tsum tsis pub tshaj 1/2 ntawm lub thickness kam rau ua, thiab tag nrho cov thickness tom qab kho yuav tsum tsis txhob tsawg tshaj li qhov tsawg kawg nkaus tso cai thickness.
Q: Daim ntawv pov thawj zoo twg tuaj yeem muab rau Q355 phaj?
A: Peb tuaj yeem muab cov ntawv pov thawj zoo hauv qab no raws li cov neeg siv khoom xav tau:
Mill Test Certificate (MTC): muab los ntawm cov hlau zeb, suav nrog cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, qhov ntev, lub xeev xa khoom thiab lwm yam ntaub ntawv.
Thib peb- daim ntawv pov thawj kev soj ntsuam tog: muab los ntawm cov chaw soj ntsuam thoob ntiaj teb xws li SGS, BV, TUV, suav nrog kev tshuaj xyuas cov txiaj ntsig zoo, ntau, ntim, thiab lwm yam.
CE daim ntawv pov thawj: rau cov khoom xa tawm mus rau European Union, los ua pov thawj tias cov khoom ua raws li cov cai ntawm European Union.
ASTM daim ntawv pov thawj: rau cov khoom xa tawm mus rau Tebchaws Meskas, ua pov thawj tias cov khoom ua raws li tus qauv ASTM.**