Vim li cas ib txwm austenitic stainless hlau raj hauv cov khoom siv hluav taws xob feem ntau raug kev nyuaj siab corrosion cracking (SCC) -los yog tsis ua hauj lwm ntxov ntxov- thaum raug chloride-muaj cov xov xwm los yog kub-kub aqueous ib puag ncig? Yog li ntawd, ib qho kev nce qib ntawm engineering tej yaam num tam sim no tig mus rau ASTM A213 TP444 seamless steel kav, feem ntau vim lawv qhov zoo ntawm SCC kuj thiab thermal stability.
ASTM A213 TP444 seamless steel raj rau cov khoom siv hluav taws xob uas peb muab yog tsim los siv lub siab purity ferritic stainless hlau system (muaj kwv yees li 17% mus rau 19% Cr, stabilized nrog Nb thiab Ti ntxiv). Cov ntaub ntawv muaj pes tsawg leeg no tshem tawm qhov kev pheej hmoo ntawm kev ntxhov siab corrosion tawg nyob rau hauv ib puag ncig chloride-nplua nuj. Nyob rau hauv cov nqe lus ntawm SCC tsis kam, TP444 qhia ob peb zaug ntau dua tawg tsis kam tshaj li ib txwm TP304/316 cov ntaub ntawv nyob rau hauv ib puag ncig nrog chloride ions, ua tshwj xeeb tshaj yog haum rau daim ntaub ntawv uas muaj seawater, condensers thiab siab chloride dej kho tshuab.
ASTM A213 TP444 Seamless Steel Yeeb Nkab rau Kub Exchangers
Hais txog kev ua haujlwm thermal, TP444 stainless hlau raj muaj thermal conductivity ntau dua (kwv yees li 1.3 txog 1.5 npaug ntawm austenitic stainless hlau) thiab qis thermal expansion coefficient (kwv yees li 10.5 × 10⁻⁶ / degree). Ob qho tib si sab hauv thiab sab nraud ntawm cov hlab ntsha tau ua tiav tiav thiab ntxuav kev kho mob kom ntseeg tau tias qib siab ntawm qhov smoothness; Sab hauv roughness (Ra) feem ntau tswj kom tsawg dua lossis sib npaug li 0.8 μm. Qhov no zoo txo cov kua dej tsis kam thiab txo cov fouling propensity los ntawm kwv yees li 15% mus rau 20%, ntxiv txhim kho tag nrho cov khoom siv hluav taws xob.
ASTM A213 Stainless hlau yeeb nkab Specification
| Yam khoom | Paub meej |
|---|---|
| Hom kev tsim khoom | Seamless / ERW / Welded / Fabric / CDW / CDS / DOM / CEW / 100% X-Ray Welded |
| Kev xa khoom | Annealed thiab pickled (AP), polished, ci annealed (BA), txias kos, MF |
| Nto tiav (304 raj) | BA, 2B, No.4, No.1, No.3, No.8, 8K, HL, 2D, 1D, iav polished, 180G, 320G, 400G satin / velvet |
| Thickness ntau | SCH 5, SCH 10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXH, SCH XXS, SCH |
| Cov qauv siv tau | SUS, JIS, AISI, ASTM, GB, DIN, EN |
| SWG/BWG gauges | 10, 12, 14, 16, 18, 20 SWB |
| Heev heev | Plain kawg, beveled, threaded |
Tshuaj muaj pes tsawg leeg ntawm A213 TP444 Seamless yeeb nkab
| Qib | UNS | c | mn | Q | Yog lawm | Yog lawm | Cr | Tsis yog | mo | N | Koj | Co | ua |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TIAB SA 213 TP444 | S44400 | 0.03 ib | 1 | 0.04 ib | 0.03 ib | 1 | 17.5–19.5 Nws | 1.75–2.5 Nws | 0.035 ib | - | - | - | - |
Tensile thiab Hardness Requirements - A213 TP444 Seamless Pipes
| Qib | UNS | Tensile zog min. (MPa) | Elastic txwv. (MPa) | Elongationmin. (%) | Hardness HBWmax. | Hardness HRBmax. |
|---|---|---|---|---|---|---|
| TIAB SA 213 TP444 | S44400 | 415 | 275 | 20 | 217 | 96 |
Daim ntawv thov ntawm ASTM A213 TP444 seamless raj rau cua sov exchangers:
fais fab kev lag luam
chemical processing kev lag luam
Kev lag luam zaub mov thiab dej haus
kev lag luam tshuaj
Desalination nroj tsuag
HVAC systems
kev lag luam nuclear
Xaus
Cov ntaub ntawv kawm: Capacitors rau cov khoom qab zib thiab cov chaw ua zaub mov
Cov Teeb Meem Cov Neeg Siv Khoom: Ib puag ncig kev sib hloov cua sov muaj qhov sib txawv ntawm qhov kub thiab txias; Lub siab coefficient ntawm thermal expansion ntawm tus qauv TP304 tshav kub exchanger raj feem ntau ua rau loosening ntawm cov pob qij txha ntawm cov hlab thiab tubesheets.
Peb cov kev daws teeb meem: Peb muab siab precision TP444 seamless raj, noj kom zoo dua ntawm nws intrinsically tsawg thermal expansion coefficient. Qhov no tau zoo daws cov teeb meem xoob los ntawm thermal cycling thiab txo cov khoom siv downtime uas xav tau rau kev saib xyuas.
Yog tias koj tab tom ntsib teeb meem kev ntxhov siab corrosion cracking (SCC), thov sab laj nrog peb cov kws tshaj lij! es@gescosteel.com
ASME SA213 TP444 Stainless Hlau Nto Kho Mob
Txias tiav ferritic alloy steel kav yuav tsum tsis muaj nplai thiab tsim nyog rau kev tshuaj xyuas. Ib qho me me ntawm oxidation tsis suav tias yog nplai.
Kub tiav SA213 TP444 ferritic alloy steel kav yuav tsum tsis txhob xoob xoob thiab haum rau kev tshuaj xyuas.
SA213 TP444 stainless hlau raj yuav tsum tau muab tshem tawm kom tshem tawm nplai. Nyob rau hauv cov ntaub ntawv ntawm SA213 TP444, thaum ci annealing yog siv, pickling yuav tsis tsim nyog. Txhua qhov kev xav tau tshwj xeeb tiav yuav raug pom zoo ntawm tus neeg muag khoom thiab tus neeg yuav khoom.
Yog tias koj muaj qee qhov kev xav tau rau TP444 stainless hlau kav, thov koj xav tias dawb tso koj qhov kev txiav txim. GNEE muaj cov khoom muag loj ntawm cov khoom nrov ntawm koj pov tseg. Cov no tuaj yeem ua tiav hauv ob qho tib si seamless thiab welded hom. Rau cov ncauj lus kom ntxaws txog tshuaj muaj pes tsawg leeg thiab kuaj dawb, thov hu rau peb lub Hoobkas tam sim ntawd. Peb muab cov nqi sib tw thiab kev pabcuam zoo heev.
Ntim nrog cov ntawv tsis muaj dej tsis zoo thiab cov hlua khi hlau, ua tau raws li cov txheej txheem ntim khoom rau kev thauj mus los hauv hiav txwv; Haum rau ntau txoj kev xa khoom lossis kho tau raws li cov neeg siv khoom xav tau.
