AISI 4140 1.7225 42CrMo4 SCM440 B7 Hlau Bar
Kev Piav Qhia Luv:
AISI SAE 4140 hlau hlau yog chromium molybdenum alloy steel specification dav siv rau hauv cov hom phiaj dav dav hlau tensile rau cov khoom, xws li axles, shafts, bolts, iav thiab lwm yam kev siv.
Cov Hlau Carbon:
AISI 4140, 1.7225 (42CrMo4), SCM440, thiab B7 Steel Bar yog cov npe sib txawv rau tib hom hlau sib xyaw. Lawv paub txog lub zog siab thiab tawv, feem ntau siv rau hauv cov ntawv thov xws li iav thiab bolts. AISI 4140 yog lub npe Asmeskas, 1.7225 yog tus qauv European EN, SCM440 yog lub npe Nyiv JIS, thiab B7 yog hais txog qib ua tau raws li ASTM A193 cov lus qhia. Cov npe no sawv cev rau cov hlau sib xyaw chromium-molybdenum nrog cov khoom zoo sib xws, thiab kev xaiv yuav nyob ntawm thaj chaw lossis cov qauv kev lag luam.
Cov Lus Qhia Txog 4140 1.7225 42CrMo4 SCM440 B7:
| Qib | 4140 1.7225 42CrMo4 SCM440 B7 |
| Tus Qauv | ASTM A29, ASTM A193 |
| Nto | Dub, Rough Machined, Tig |
| Txoj kab uas hla ntau yam | 1.0 ~ 300.0 hli |
| Ntev | 1 txog 6 Meters |
| Kev Ua Haujlwm | Txias Kos & Polished Txias Kos, Centerless Av & Polished |
| Cov Khoom Siv Raw | POSCO, Baosteel, TISCO, Saky Steel, Outokumpu |
Nta & Cov txiaj ntsig:
•Lub Zog Muaj Zog: Cov hlau no muaj lub zog tensile siab, ua rau lawv haum rau cov ntawv thov uas lub zog thiab kev ua haujlwm ntev yog qhov tseem ceeb.
•Kev Ruaj Khov: Lawv muaj kev ruaj khov zoo thiab kev cuam tshuam tsis kam, ua rau lawv muaj peev xwm tiv taus cov khoom hnyav thiab kev ntxhov siab dynamic.
•Kev Siv Tau Ntau Yam: AISI 4140, 1.7225, 42CrMo4, SCM440, thiab B7 yog cov hlau sib xyaw ua ke uas siv tau ntau yam, suav nrog cov iav, cov ntsia hlau, cov ncej, thiab cov khoom siv hauv cov qauv.
•Kev Hnav Tsis kam: Cov khoom sib xyaw, xws li chromium thiab molybdenum, pab txhawb rau kev hnav tsis kam, ua rau cov hlau no haum rau cov ntawv thov uas raug rau cov xwm txheej abrasive.
•Kev Siv Tau: Cov hlau no muaj kev siv tau zoo thaum kho cua sov kom zoo, ua rau cov txheej txheem siv tau zoo thaum lub sijhawm tsim khoom.
•Kev vuam tau: Lawv tuaj yeem vuam tau, txawm hais tias kev kho cua sov ua ntej thiab tom qab vuam yuav tsum tau ua kom tswj tau cov khoom xav tau thiab zam cov teeb meem xws li brittleness.
Cov Tshuaj Muaj Peev Xwm:
| Qib | C | Mn | P | S | Si | Cr | Mo |
| 4140 | 0.38-0.43 | 0.75- 1.0 | 0.035 | 0.040 | 0.15-0.35 | 0.8-1.10 | 0.15-0.25 |
| 42CrMo4/ 1.7225 | 0.38-0.45 | 0.6-0.90 | 0.035 | 0.035 | 0.40 | 0.9-1.20 | 0.15-0.30 |
| SCM440 | 0.38-0.43 | 0.60-0.85 | 0.03 | 0.030 | 0.15-0.35 | 0.9-1.20 | 0.15-0.30 |
| B7 | 0.37-0.49 | 0.65-1.10 | 0.035 | 0.040 | 0.15-0.35 | 0.75-1.20 | 0.15-0.25 |
Cov khoom siv kho tshuab:
| Qib | Lub Zog Tensile [MPa] | Yiled Lub zog [MPa] | Kev ntev% |
| 4140 | 655 | 415 | 25.7 |
| 1.7225/42CrMo4 | 1080 | 930 | 12 |
| SCM440 | 1080 | 930 | 17 |
| B7 | 125 | 105 | 16 |
Cov Lus Nug Feem Ntau:
Vim li cas ho xaiv peb?
•Koj tuaj yeem tau txais cov khoom zoo meej raws li koj xav tau ntawm tus nqi qis tshaj plaws.
•Peb kuj muab cov nqi Reworks, FOB, CFR, CIF, thiab tus nqi xa khoom tuaj rau koj. Peb xav kom koj ua qhov kev pom zoo rau kev xa khoom uas yuav pheej yig heev.
•Cov ntaub ntawv peb muab yog qhov tseeb tag nrho, txoj cai los ntawm daim ntawv pov thawj xeem raw khoom mus rau qhov kawg ntawm daim ntawv qhia. (Cov ntawv qhia yuav qhia raws li qhov xav tau)
•Peb lav tias yuav teb tsis pub dhau 24 teev (feem ntau hauv tib lub sijhawm)
•Muab daim ntawv qhia SGS TUV.
•Peb mob siab rau peb cov neeg siv khoom. Yog tias nws tsis tuaj yeem ua tau raws li koj xav tau tom qab kuaj xyuas txhua txoj kev xaiv, peb yuav tsis dag koj los ntawm kev cog lus cuav uas yuav tsim kev sib raug zoo nrog cov neeg siv khoom.
•Muab kev pabcuam ib zaug xwb.
4140 vs 42CRMO4 - Qhov txawv yog dab tsi?
AISI 4140 thiab 42CrMo4 yog cov hlau zoo ib yam, nrog rau AISI 4140 yog lub npe Asmeskas thiab 42CrMo4 yog lub npe European. Lawv muaj cov tshuaj sib xws, muaj zog siab, thiab tawv, ua rau lawv haum rau cov ntawv thov xws li iav thiab bolts. Txawm hais tias muaj lub npe sib txawv thiab cov qauv hauv cheeb tsam, lawv feem ntau suav tias yog sib pauv tau vim muaj cov khoom sib xws.
42CrMo4 hlau yog dab tsi?
42CrMo4 yog cov hlau chromium-molybdenum alloy uas tau teev los ntawm European standard EN 10083. Nws paub txog nws lub zog siab, kev tawv, thiab kev ua kom tawv zoo. Nrog cov pa roj carbon ntawm 0.38% txog 0.45%, nws feem ntau siv rau hauv cov ntawv thov uas xav tau cov khoom siv ruaj khov, xws li cov iav, crankshafts, thiab cov pas nrig txuas hauv kev lag luam xws li tsheb thiab aerospace. Cov hlau teb tau zoo rau kev kho cua sov, muab lub peev xwm los kho cov khoom siv kho tshuab, thiab nws suav tias yog sib npaug thoob ntiaj teb rau lwm cov npe xws li AISI 4140 thiab SCM440.
Qib B7 steel yog dab tsi?
Qib B7 yog ib qho lus qhia hauv ASTM A193 tus qauv, uas suav nrog cov khoom siv bolting muaj zog rau kev siv hauv qhov kub thiab txias lossis kev pabcuam siab. ASTM A193 yog tus qauv tsim los ntawm ASTM International (yav tas los hu ua American Society for Testing and Materials) thiab siv dav hauv kev lag luam roj thiab roj, petrochemical, thiab kev tsim hluav taws xob. Qib B7 hlau yog cov hlau chromium-molybdenum qis uas tau quenched thiab tempered (heat-treated) kom ua tiav cov khoom siv kho tshuab xav tau. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias Qib B7 hlau feem ntau siv ua ke nrog Qib 2H txiv ntoo kom ntseeg tau tias muaj kev sib raug zoo thiab kev ua tau zoo hauv cov ntawv thov uas xav tau. Thaum teev tseg, cov ntaub ntawv yuav tsum ua tau raws li cov kev cai teev tseg hauv ASTM A193 thiab A194 tus qauv kom ntseeg tau tias muaj zog, ductility, thiab lwm yam khoom siv kho tshuab.
Peb Cov Neeg Siv Khoom
Cov Lus Teb Los Ntawm Peb Cov Neeg Siv Khoom
Cov hlau AISI 4140, 1.7225, 42CrMo4, SCM440, thiab B7 teb tau zoo rau kev kho cua sov, uas ua rau muaj kev hloov kho cov khoom siv kho tshuab xws li qhov nyuaj thiab kev tawv. Cov hlau no muaj lub zog tensile siab, ua rau lawv haum rau cov ntawv thov uas lub zog yog qhov tseem ceeb. Lawv muaj kev tawv zoo thiab kev tiv thaiv kev cuam tshuam, ua rau lawv muaj peev xwm tiv taus cov khoom hnyav thiab kev ntxhov siab dynamic. Cov hlau no muaj ntau yam thiab pom cov ntawv thov hauv ntau yam lag luam, suav nrog tsheb, aerospace, kev tsim kho, thiab kev tsim khoom. Cov ntsiab lus alloying, xws li chromium thiab molybdenum, pab txhawb rau kev tiv thaiv kev hnav zoo dua, ua rau cov hlau no haum rau cov ntawv thov uas raug rau cov xwm txheej abrasive.
Ntim:
1. Kev ntim khoom yog qhov tseem ceeb heev tshwj xeeb tshaj yog thaum xa khoom mus thoob ntiaj teb uas cov khoom xa tuaj dhau ntau txoj kev sib txawv kom mus txog qhov chaw kawg, yog li peb thiaj li txhawj xeeb txog kev ntim khoom.
2. Saky Steel ntim peb cov khoom ntau txoj kev raws li cov khoom. Peb ntim peb cov khoom ntau txoj kev, xws li,
