Thaum muas stainless hlau yeeb nkab, kev tshuaj xyuas kom zoo yog qhov tseem ceeb los xyuas kom meej cov khoom zoo, kev nyab xeeb thiab kev ua haujlwm ntev. Txawm hais tias koj tab tom yuav cov yeeb nkab rau kev lag luam, kev tsim kho, roj thiab roj, kev siv tshuaj lom neeg lossis zaub mov, kev nkag siab txog kev tshuaj xyuas cov yeeb nkab steel hlau tuaj yeem pab koj kom tsis txhob raug nqi tsis zoo thiab kev tsis sib haum xeeb.
Phau ntawv qhia no piav qhia yuav ua li cas los tshuaj xyuas cov yeeb nkab stainless ib kauj ruam, tsom mus rau cov ntsiab lus tshuaj xyuas tseem ceeb uas tseem ceeb tshaj rau cov neeg yuav khoom.
Vim li cas stainless hlau yeeb tshuaj ntsuam xyuas tseem ceeb?
Stainless hlau kav yog dav siv los ntawm lawv cov corrosion kuj, lub zog thiab durability, tab sis tsis xws li cov ntaub ntawv tsis raug, tsis zoo nto tiav los yog qhov sib txawv ntawm qhov yuav cuam tshuam rau kev ua tau zoo.
Kev tshuaj xyuas kom zoo pab cov neeg yuav khoom:
Txheeb xyuas cov qib thiab cov qauv (ASTM, EN, JIS, thiab lwm yam)
Xyuas kom meej qhov tseeb
Tshawb xyuas qhov tsis xws luag lossis sab hauv
Paub meej tias cov khoom siv kho tshuab thiab tshuaj lom neeg
Txo cov kev pheej hmoo thaum lub sijhawm teeb tsa thiab kev pabcuam
1. Kev soj ntsuam xyuas ntawm cov kav dej stainless hlau
Thawj thiab cov kauj ruam yooj yim tshaj plaws yog kev tshuaj xyuas qhov muag.
Xyuas cov hauv qab no:
Qhov saum npoo yuav tsum du, huv si thiab tsis muaj kab nrib pleb.
Tsis pom khawb, dents, pits los yog xeb stains.
Welded kav: lub vuam seam yuav tsum zoo ib yam thiab tas mus li.
Pickled los yog polished kav yuav tsum muaj ib tug uniform deg tiav.
📌 Lub tswv yim: Cov teeb meem saum npoo yuav qhia tau tias kev ua haujlwm tsis zoo lossis tsis muaj paug, tshwj xeeb tshaj yog rau 304, 316, 321 lossis duplex stainless hlau yeeb nkab.
2. Dimensional soj ntsuam (OD, Phab ntsa thickness, Ntev)
Qhov tseeb qhov ntev yog qhov tseem ceeb rau kev haum thiab kev ua haujlwm siab zoo.
Cov tshev tseem ceeb suav nrog:
Sab nraud txoj kab uas hla (OD)
phab ntsa thickness
Ntev thiab ncaj
Ovality thiab roundness
Kev ntsuas yuav tsum ua raws li cov qauv xws li:
ASTM A 312 / A213 / A268 / ASTM A312 / A213 / A268 / ASTM A312 / A213 / A268 / ASTM A312 / A213 / A268 / ASTM A312 / A213 / A268 / ASTM A312 / A213 / A268 / ASTM A312 / A213 / A268)
TS EN 10216
JIS G3459
📌 Cov neeg yuav khoom yuav tsum kuaj xyuas qhov ntev ntawm kev siv calipers, micrometers, lossis ultrasonic thickness gauges.
3. Kev txheeb xyuas cov khoom qib thiab tshuaj lom neeg muaj pes tsawg leeg
Ib qho ntawm cov txheej txheem tshuaj xyuas tseem ceeb tshaj plaws yog lees paub qhov tseeb qib ntawm stainless hlau. Cov txheej txheem ntau:
Factory Test Certificate (MTC/EN 10204 3.1)
PMI (Positive Material Identification) Kev Xeem
Portable XRF Analyzers
Cov ntsiab lus tseem ceeb los txheeb xyuas:
Chromium (Cr)
Nickel (Ni)
Molybdenum (hli)
Carbon (C) - tshwj xeeb tshaj yog tseem ceeb rau 304H / 316H
📌 Cov kauj ruam no tiv thaiv kev hloov pauv qib, muaj kev pheej hmoo ntau hauv ntiaj teb stainless hlau khoom.
4. Kev ntsuam xyuas cov khoom siv tshuab
Mechanical kev ua tau zoo txiav txim siab seb cov yeeb nkab puas tuaj yeem tiv taus siab thiab kub.
Cov kev ntsuam xyuas muaj xws li:
Lub zog tensile
elastic txwv
Elongation
hardness kuaj
Cov txiaj ntsig no yuav tsum ua kom tau raws li qhov yuav tsum tau ua ntawm tus qauv siv, xws li ASTM A312 Stainless Steel Pipe Specifications.
📌 Rau kev pabcuam kub, qib xws li TP321 lossis TP304H yuav tsum tau saib xyuas tshwj xeeb.
5. Kev kuaj tsis yog kev puas tsuaj (NDT)
Rau cov ntawv thov tseem ceeb, kev sim tsis muaj kev puas tsuaj yog qhov tseem ceeb.
Cov txheej txheem NDT:
Kev kuaj ultrasonic (UT) - kuaj pom qhov tsis xws luag sab hauv
Eddy tam sim no kuaj (ECT) - kuaj xyuas qhov chaw thiab qhov ze ntawm qhov chaw
Hydrostatic los yog pneumatic ntsuas ntsuas
Muaj radiography (RT) rau welded kav
📌 Seamless stainless hlau kav feem ntau raug kuaj rau ASTM A999 / A1016.
6. Kev kho deg thiab kev tiv thaiv corrosion
Tshawb xyuas seb cov yeeb nkab saum npoo kho tau raws li qhov xav tau ntawm koj daim ntawv thov:
Stripping thiab passivation
qaim annealed
Polishing (180/240/320/400 grit)
Rau corrosive ib puag ncig, cov neeg yuav khoom tuaj yeem thov:
Tshuaj tsuag ntsev
Intergranular corrosion test
Ntim, cim thiab cov ntaub ntawv
Kev tshuaj xyuas zaum kawg yuav tsum muaj xws li:
Clear marking (qib, qhov loj, qauv, batch tooj)
Txheem export ntim (cov thawv ntoo, pob khoom, lub kaus mom yas)
Ua kom tiav cov ntaub ntawv:
TCM
Cov ntawv ntim khoom
coj mus muag invoice
Kev tshuaj ntsuam xyuas
📌 Kev ntim khoom kom zoo tiv thaiv kev puas tsuaj thaum thauj thoob ntiaj teb.
