SA514 Qib F Steel Phaj
SA514 Qib FHlau Phaj: Kev Profile
SA514 Qib F yog siab -lub zog, quenched thiab tempered alloy steel phaj raws li ASTM A514 / A514M specification. Nws yog renowned raws li ib tug "100 ksi yield zog" steel (Ntau tshaj los yog sib npaug zos rau 690 MPa), muab ib tug tshwj xeeb lub zog - rau - luj piv ua ke nrog zoo toughness.
Quick- Daim Ntawv Qhia Cov Ntaub Ntawv
| Qeb | Specification |
|---|---|
| Txuj | ASTM A514/A514M |
| Hom | Alloy Steel, Quenched & Tempered |
| Yield zog (ReH) | Ntau dua lossis sib npaug rau 690 MPa (Ntau dua lossis sib npaug rau 100 ksi) |
| Tensile zog (Rm) | 790 - 930 MPa (115 - 135 ksi) |
| Ntsiab Feature | Boron- kho kom sib sib zog nqus hardenability hauv daim hlau tuab. |
| Qhov tseem ceeb | Khaws zoo toughness ntawm qhov kub thiab txias. |
1. Tshuaj muaj pes tsawg leeg txog SA514 Qib F (Qhov hnyav %)
Qhov tseeb chemistry ua rau nws ua haujlwm siab los ntawm kev kho cua sov.
| Element | Ntau / Limit | Muaj nuj nqi |
|---|---|---|
| Cov pa roj carbon (C) | 0.15 - 0.21% | Base zog & hardenability |
| Manganese (Mn) | 0.95 - 1.30% | Lub zog, toughness, hardenability |
| Silicon (Si) | 0.40 - 0.80% | Deoxidizer, lub zog |
| Chromium (Cr) | 0.40 - 0.65% | Hardenability, hnav tsis kam |
| Molybdenum (hli) | 0.15 - 0.25% | Hardenability, temper stability |
| Vanadium (V) | 0.03 - 0.08% | Grain refinement, nag lossis daus hardening |
| Boron (B) | 0.001 - 0.003% | Critical: Drastically boosts hardenability |
| Phosphorus (P) | Tsawg dua lossis sib npaug li 0.035% | Tswj impurity |
| Sulfur (S) | Tsawg dua lossis sib npaug li 0.035% | Tswj impurity |
Nco tseg:Cov ntsiab lus boron muaj kev tiv thaiv los ntawm ib qho me me titanium (Ti) ntxiv kom ntseeg tau tias muaj txiaj ntsig zoo.
2. Mechanical Properties txog SA514 Qib F
Cov khoom yog ua tiav los ntawm dej quenching thiab tempering.
Yield zog
Ntau tshaj los yog sib npaug rau 690 MPa (100 ksi) Tus nqi tsim thawj. Tensile Strength 790 - 930 MPa (115-}135 ksi) Elongation (hauv 2") Ntau dua los yog sib npaug li 18% Zoo ductility rau nws lub zog. Charpy V-Notch Impact Ntau dua lossis sib npaug rau 54 J (40 ft-lbf) - 4 ° F-10 ° F (-40℃Excel) tawv.
Thickness Muaj: Feem ntau muab txog li 4 ntiv tes (100 mm) tuab. Cov phaj nyias nyias feem ntau muaj qhov muaj zog ntau dua.
3. Qhov tseem ceeb & Cov yam ntxwv ntawm SA514 Qib F
Lub zog loj heev: 100 ksi tawm los tso cai rau kev txo qhov hnyav hauv cov qauv.
Zoo Toughness: Tswj qhov cuam tshuam tsis kam mus rau -40℃F / -40 degree, haum rau qhov chaw txias.
Los ntawm -Thickness Properties: Cov txheej txheem quench & temper nrog boron ua kom cov khoom zoo ib yam txawm nyob hauv cov phaj tuab.
Fatigue Resistance: Fine-grained microstructure muab kev ua haujlwm zoo rau kev thauj khoom cyclic.
4. Cov ntawv thov tseem ceeb txog SA514 Qib F
SA514 Qib F phaj tau teev tseg rau siab -kev nyuaj siab, hnyav- cov khoom tseem ceeb:
Khoom hnyav: Excavator booms, loader caj npab, crane Cheebtsam.
Mining: Txau cov thoob, dragline lug.
Kev thauj mus los: Chassis rau hnyav- tsheb thauj khoom, tsheb thauj khoom.
Kev tsim kho: Cov kev sib txuas tseem ceeb hauv cov txuas hniav (xws li, cov phaj sib txuas), siab - nce lub tsev.
Zog: Cua turbine yees (siab- ntu kev ntxhov siab), cov khoom siv drilling.
Kev Tiv Thaiv: Armored tsheb qhov chaw, cov khoom siv.
5. Fabrication Considerations txog SA514 Qib F (Critical)
Ua haujlwm nrog SA514 Qib F yuav tsum muaj cov txheej txheem tshwj xeeb vim nws lub zog siab thiab tawv tawv.
| Txheej txheem | Cov ntsiab lus tseem ceeb |
|---|---|
| Vuam | YUAV UA LI CAS YUAV TSUM: • Ua ntej-heat & Interpass Temp: Feem ntau 300-400℃F (150-200℃). • Filler Hlau: Siv qhov sib txuam siab -lub zog, qis- hydrogen electrodes (piv txwv li, E11018, E12018). • Ncej -Kev kho cua sov (PWHT): Feem ntau yuav tsum tau ua kom txo qis kev ntxhov siab (tempering). • Txheej Txheem Tsim Nyog: Qhov tseem ceeb ua ntej vuam ntau lawm. |
| Txiav | Thermal txiav (plasma, laser) yog tus qauv. Oxy- roj yuav tsum tau saib xyuas kom tsis txhob ua kom tawv tawv. Ua ntej- cua sov ua ntej nplaim taws txiav yog pom zoo rau cov phaj tuab. |
| tsim | Kev ua kom txias yog qhov nyuaj. Kev sib sau kub (Ntau dua lossis sib npaug ntawm 1650℃F / 900 degree) ua raws li re-kub- kev kho mob feem ntau tsim nyog rau kev khoov hnyav. |
| Tshuab dhos | Yuav tsum muaj kev teeb tsa nruj, qhov zoo rake kaum, thiab cov cuab yeej carbide. Nws yog qhov nyuaj rau tshuab ntau dua li cov hlau me me (A36). |
6. Qib sib npaug & Zoo sib xws txog SA514 Qib F
Teb chaws Europe (EN)
S690QL (EN 10025-6) Zoo sib xws 690 MPa tawm los, quenched & tempered. Chemistry txawv. International Hardox 450 (SSAB) Zoo sib xws lub zog, tab sis optimized rau puas kuj. Tej zaum yuav muaj qis toughness. Proprietary AR450 Abrasion-resistant qib; lub zog zoo sib xws, tab sis toughness specifications txawv. ASTM A709 Qib 100W Choj steel version nrog cov khoom zoo sib xws.
Kev Muag Khoom & Kev Pov Hwm Zoo
Thaum xaj SA514 Qib F phaj:
Qhia meej tus qauv: ASTM A514 Qib F.
Thov Mill Test Reports (MTRs): Qhov tseem ceeb los txheeb xyuas chemistry, mechanical properties, and impact test results.
Txhais kev xa khoom: Feem ntau muab raws li quenched thiab tempered.
Xav txog cov kev xav tau ntxiv: ASTM tus qauv muaj kev xaiv rau kev kuaj ntxiv (xws li, kuaj ultrasonic, los ntawm -thickness tests).
Cov ntsiab lus
SA514 Qib F steel phaj yog tus nqi siab, siab - cov khoom siv ua haujlwm rau cov kws ua haujlwm uas xav tau kom txuag tau qhov hnyav yam tsis muaj kev ua kom muaj kev ncaj ncees lossis tawv. Nws siv yog tsim nyog rau cov ntawv thov tseem ceeb uas cov khoom siv ntau dua thiab cov nqi tsim khoom raug cuam tshuam los ntawm cov txiaj ntsig kev ua tau zoo thiab kev txuag hnyav hauv cov qauv kawg. Kev siv tau zoo xav tau kev hwm rau nws txoj kev tsim khoom, tshwj xeeb tshaj yog hais txog vuam thiab kev kho cua sov.
1. Lub zog tawm ntawm SA514 Qib F yog dab tsi?
SA514 Qib F yog txhais los ntawm nws 100 ksi (690 MPa) yam tsawg kawg nkaus yield zog. Qhov no ua rau nws muaj tseeb "100 ksi steel," tso cai rau kev txo qhov hnyav ntawm cov qauv hauv qab kev ntxhov siab.
2. Daim ntawv thov thawj zaug ntawm SA514 Qib F yog dab tsi?
Cov hlau no feem ntau siv rau hauv cov mining thiab cov cuab yeej hnyav-xws li excavator booms, crane Cheebtsam, thiab cov qauv dragline- qhov twg muaj zog, toughness, thiab qaug zog kuj tseem ceeb heev rau kev ua haujlwm thiab kev nyab xeeb.
3. SA514 Qib F puas tuaj yeem welded?
Yog lawm, tab sis nws yuav tsum tau ua cov txheej txheem vuam nruj nrog rau kev ua kom sov ua ntej (300-400℃F), qis-hydrogen electrodes, thiab feem ntau tom qab vuam cua sov (PWHT) vim nws muaj zog hardenability thiab pheej hmoo ntawm hydrogen-induced cracking.
4. Puas yog SA514 Qib F puas muaj qhov zoo ntawm qhov kub thiab txias?
Yog lawm, nws muaj qhov ua tau zoo heev ntawm qhov kub thiab txias, feem ntau yuav tsum muaj qhov tsawg kawg nkaus Charpy V-notch cuam tshuam tus nqi ntawm 54 J (40 ft-lb) ntawm -40℃(-40℃F), ua rau nws haum rau kev siv huab cua txias.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
