ASTM A588 yog qib Corten Steel siv dav hauv cov haujlwm txawv teb chaws, nrog Qib A thiab Qib K raws li cov qib sib txawv. Lawv qhov sib txawv tseem ceeb nyob hauvalloy muaj pes tsawg leeg optimization, uas ntxiv ua rau variations ntawm txhua yam khoom thiab corrosion kuj. Kab lus no qhia meej txog qhov sib txawv no los pab cov neeg siv khoom xaiv kom raug.
1. Core Difference: Alloy Composition
Qhov tseem ceeb ntawm qhov sib txawv yog qhov sib ntxiv ntawm cov nplej-refining ntsiab nyob rau hauv Qib K: - ASTM A588 Qib A: Basic Cu-Cr-Ni alloy system (Cu: 0.25-0.40%, Cr: 0.40-0.65%, Ni Tsawg dua los yog sib npaug li 0.40%) ntawm Nb (niobium) lossis V (vanadium). - ASTM A588 Qib K: Raws li Qib A, nws yuav tsum tau Nb thiab / lossis V (tag nrho cov ntsiab lus: 0.015-0.060%) los kho cov qauv nplej, txhim kho cov khoom sib xws thiab kev ua haujlwm ruaj khov.
2. Qhov sib txawv ntawm cov cuab yeej cuab tam
Yield & Tensile zog: Ob leeg ua tau raws li qhov tsawg kawg nkaus lub zog (Ntau dua lossis sib npaug ntawm 345MPa) thiab lub zog tensile (485-655MPa) cov cai ntawm ASTM A588, tsis muaj qhov txawv txav.
Impact Toughness & Ductility: Qib K muaj qhov zoo. Ntawm 0℃(tus qauv ntsuas kub), Qib K qhov tsawg kawg nkaus cuam tshuam lub zog (Ntau dua lossis sib npaug ntawm 27J) ruaj khov dua, thiab nws qhov elongation (Ntau dua lossis sib npaug li 20%) yog siab dua li Qib A. Cov nplej-refining nyhuv ntawm Nb/V txo qhov kev pheej hmoo ntawm nkig tawg, ua rau Qib K ntau haum rau qis dua dynamic load{{6}.
Formability: Qib K's refined nplej txhim kho kev ua haujlwm txias. Nws tsis tshua muaj kev tawg thaum khoov, stamping thiab lwm yam txheej txheem, tshwj xeeb tshaj yog rau tuab - ntsuas cov ntawv (Ntau dua lossis sib npaug li 8 hli).
3. Qhov sib txawv ntawm Corrosion Resistance
Ob qib muaj kev tiv thaiv corrosion zoo heev (qhov ntsuas huab cua Kuv Ntau dua lossis sib npaug ntawm 6.0) vim tib yam Cu-Cr-Ni core alloy piv, tsis muaj qhov sib txawv tseem ceeb hauv thaj chaw huab cua dav dav (nyob deb nroog, thaj chaw hauv av). Lawv txhua xyoo corrosion tus nqi yog 0.01-0.02mm / xyoo, thiab cov txheej txheem tiv thaiv tus kheej tiv thaiv xeb hauv 6-12 lub hlis.
Txawm li cas los xij, Qib K cov qauv zoo ib yam ua rau cov txheej txheem xeb ua kom sib npaug, zam cov ntsiab lus tsis muaj zog hauv zos los ntawm cov nplej tsis sib xws. Nyob rau hauv ib puag ncig hnyav me ntsis (xws li, thaj chaw ntug dej hiav txwv uas tsis tshua muaj ntsev tsuag), Qib K qhov xeb txheej ruaj khov zoo dua me ntsis.
4. Cov tswv yim xaiv tswv yim
XaivASTM A588 Qib Arau cov qauv sab nraum zoov zoo li qub (xws li, cov phab ntsa toj roob hauv pes zoo tib yam, tsis yog- thauj khoom-cov khoom sib xyaws) hauv qhov chaw me me, los tswj cov nqi.
XaivASTM A588 Qib Krau: ① Tsawg- qhov kub thiab txias (ze li 0 degree); ② Dynamic load structures (piv txwv li, cov choj me me, kev txhawb nqa txhua yam); ③ Thick - ntsuas cov khoom yuav tsum tau ua kom txias; ④ Ib puag ncig corrosive me ntsis (nruab ntug ntug dej hiav txwv).
Nyob rau hauv cov ntsiab lus, ASTM A588 Qib K optimizes mechanical zog stability thiab formability los ntawm grain -refining ntsiab, thaum Qib A yog tus nqi ntau dua -zoo rau cov xwm txheej dav dav. Kev xaiv yuav tsum ua raws li ib puag ncig thiab cov kev xav tau ntawm cov qauv.
