ASTM A{0}} honed tubeyog ib qho txias -kos los yog kub- tiav seamless mechanical raj ntawm UNS G41400 chromium-molybdenum alloy steel uas nws sab hauv bore tiav los ntawm precision honing rau H8 / H9 kam rau ua thiab Ra 0.2-0.4 μm. Nws yog qhov npaj tau-rau- sib dhos thoob ntawm lub tog raj kheej hydraulic: cov hlau nqa lub hoop stress, thiab honed bore nqa lub foob thiab lub piston. Rau kev pabcuam lub tog raj kheej lub raj feem ntau yog quenched thiab tempered rau 28–32 HRC, thiab peb yam txiav txim siab seb qhov kev txiav txim muab ua li cas - qhov kev xa khoom, cov chav kawm tiav bore kam rau ua, thiab phab ntsa thickness txheeb ze rau kev ua haujlwm siab.
ASTM A519 Cov Lus Qhia Tshwj Xeebyog seamless mechanical tubing specification, tsis yog siab - yeeb nkab txheem. Nws txhais cov niam txiv raj - chemistry, mob, sab nraud txoj kab uas hla thiab phab ntsa - thaum honing txhais lub bore uas A519 nws tus kheej tsis npog. Ob qhov kev xav tau yuav tsum tau sau rau ntawm daim ntawv xaj khoom raws li ib qho kev qhia tshwj xeeb, thiab lub tog raj kheej tsim siab yog xam cais los ntawm cov raj geometry thiab cov xwm txheej.
Technical Specifications
| Parameter | Muaj peev xwm |
|---|---|
| Base txheem | ASTM A519 / A519M-24a (Qib 4140, UNS G41400) |
| Sab nraud txoj kab uas hla (parent tube) | Txog li 325 hli (12¾ nyob rau hauv); Cov khoom siv dav dav 40-260 mm |
| Phab ntsa thickness | Ib qho kev tsim, raug 5-40 mm; qhov ntev tau hais raws li OD × phab ntsa, tsis yog NPS |
| Ua tiav bore (ID) | Kev cai rau kev kos duab; Kev kam rau siab H7 / H8 / H9 rau ISO 286-1 |
| Surface finish (dhau) | Ra 0.2-0.4 μm honed; Ra Tsawg dua lossis sib npaug li 0.2 μm SRB |
| Kev ncaj | Tsawg dua lossis sib npaug li 0.3 hli / m tus qauv; Tsawg dua los yog sib npaug li 0.1-0.15 mm / m rau cov kab ntev |
| Ntev | Mus txog 12 m, tsau los yog random |
| Xaus | Plain, beveled los yog threaded; bore tiv thaiv los ntawm lub kaus mom yas |
| Kev kho cua sov | Annealed / normalized / stress-relieved / quenched & tempered |
| Daim ntawv pov thawj | EN 10204 3.1; thib peb-kev soj ntsuam tog (SGS / BV / TÜV) muaj |
Tshuaj muaj pes tsawg leeg
A{0}} tshuaj muaj pes tsawg leeg yog chromium- molybdenum tshuav nyiaj li cas tswj hwm los ntawm UNS G41400; cov kev txwv hauv qab no yog cov cua sov- ntsuas qhov ntsuas.
| Lub ntsiab | 4140 (max / ntau) |
|---|---|
| Cov pa roj carbon (C) | 0.38–0.43 % |
| Manganese (Mn) | 0.75–1.00 % |
| Phosphorus (P) | 0.040% max |
| Sulfur (S) | 0.040% max |
| Silicon (Si) | 0.15–0.35 % |
| Chromium (Cr) | 0.80–1.10 % |
| Molybdenum (hli) | 0.15–0.25 % |
Chromium thiab molybdenum yog dab tsi nqa 4140 saum cov pa roj carbon monoxide: chromium ntxiv zog thiab hardenability, molybdenum ntxiv toughness thiab siab - kub stability. Kev tsom xam cov khoom lag luam yog A519 Table 5 kam rau ua (+0.005 rau P thiab S), yog li daim ntawv pov thawj zeb tau nyeem tawm tsam cov cua sov- tsom xam txwv ntxiv rau qhov kev ua siab ntev.
Mechanical Properties
Lub A519 4140 cov khoom siv kho tshuab nyob ntawm qhov kev xa khoom; lub rooj muab A519 puag- rooj tsawg kawg nkaus los ntawm qhov xwm txheej.
| Qhov xwm txheej | Yield MPa (ksi) | Tensile MPa (ksi) | Elongation |
|---|---|---|---|
| Nthuav dav (A) | Ntau dua lossis sib npaug rau 414 (60) | Ntau dua lossis sib npaug rau 552 (80) | Ntau dua lossis sib npaug li 25% |
| Normalized (N) | Ntau dua lossis sib npaug rau 621 (90) | Ntau dua lossis sib npaug rau 855 (120) | Ntau dua lossis sib npaug li 20% |
| Kev ntxhov siab -relieved (SR) | Ntau dua lossis sib npaug rau 689 (100) | Ntau dua lossis sib npaug rau 855 (120) | Ntau dua lossis sib npaug li 10% |
| Kub-ua tiav (HF) | Ntau dua lossis sib npaug rau 621 (90) | Ntau dua lossis sib npaug rau 855 (120) | Ntau dua lossis sib npaug li 15% |
| Quenched & tempered (Q&T) | Tsis nyob rau hauv A519 lub hauv paus rooj - teev los ntawm tus neeg yuav khoom; Lub tog raj kheej lub tog raj kheej feem ntau yog 28–32 HRC (UTS 850–1000+ MPa, tawm los 700–850+ MPa) | ||
Qhov yuam kev feem ntau yog nyeem "4140" ua ib lub zog ruaj khov. A519 kho chemistry thiab mob, tsis yog ib qho txiaj ntsig - qhov kev mob annealed muab ≈414 MPa tawm los, thaum Q&T chim muab 700+ MPa. Tsim ib lub thoob siab rau tus nqi annealed tawm roughly ib feem peb ntawm cov muaj zog uas tsis siv. Elongation yog ntsuas ntawm 50 hli (2 hauv) ntsuas qhov ntev thiab txawv raws li qhov xwm txheej, yog li nws tsis yog ib qho tas li.
Qib thiab txheej txheem sib piv
| Kev xav tau | 4140 (A519) | 42CrMo4 (EN 10305-1) | 4130 |
|---|---|---|---|
| Khoom naj npawb | UNS G41400 | 1.7225 | G41300 |
| Yam Q&T tawm los | 700–{1}} MPa | 700-900 MPa (tsawg dua lossis sib npaug li 16 hli) | qis; feem ntau siv annealed / SR |
| Hom kev siv | Heavy hydraulic chim | European -spec chim | Lighter, qis dua -load chim |
Nyob rau hauv lub honed raj vs SRB raj xaiv, ob qho tag nrho cov bore mus rau ib tug precision kam rau ua. Honing tshem tawm cov khoom siv pob zeb thiab muab Ra 0.2-0.4 μm; SRB skives thiab roller-burnishes, ua hauj lwm- hardens saum npoo thiab ncav Ra Less tshaj los yog sib npaug rau 0.2 μm. Qhov kev txiav txim siab yog tsav los ntawm hom foob, ntim thiab nqi, tsis yog los ntawm qhov yooj yim "zoo dua."
Xaiv cov qib zoo thiab kev xa khoom
A519 4140 kev xa khoom, tsis yog lub npe qib, txiav txim siab tus nqi tsim. Rau hydraulic cylinder chim,quenched thiab tempered 4140 raj ntawm 28-32 HRC yog lub neej ntawd: nws muab lub zog tswj thiab qaug zog tiv thaiv lub siab chim siab xav tau. Annealed 4140 (≈414 MPa tawm los) yog mos heev rau kev pabcuam siab thiab yog lub tshuab ua haujlwm dawb, tsis yog lub thoob. Txias- rub tawm- nyuaj (+C) nqa cov kev ntxhov siab seem uas tuaj yeem cuam tshuam lub bore thaum lub sij hawm honing, yog li nws yog zam rau tej chim.
| Qhov xwm txheej | Hardness | Puas siv rau lub cev? |
|---|---|---|
| Q&T (+ QT) | 28-32 HRC | Yog - tus qauv rau lub siab chim chim |
| Normalized (+ N) | 190–240 HB | Weldable blanks, tsis yog -siab |
| Kev ntxhov siab -relieved (+SR) | 190–230 HB | Stable bore, lub luag hauj lwm lub teeb |
| Annealed (+A) | Tsawg dua lossis sib npaug li 197 HB | Machining Tshuag, tsis yog lub thoob |
Nyob rau sab bore, 4140 honed tube id kam rau ua H8 H9 thiab 4140 honed tube nto tiav Ra 0.2 txog 0.4 μm yog xaiv los ntawm kev foob hom thiab siab, thaum A519 4140 qhov ntev OD phab ntsa tau teev raws li sab nraud txoj kab uas hla × phab ntsa, tsis yog NPS lossis lub sijhawm.
Thaum qhov project tau sau tseg rau cov qauv European, qhia meej42CrMo4 honed raj (1.7225)rau EN 10305-1 (los yog EN 10297-1 rau phab ntsa hnyav); cov hlau yog tib yam li 4140 thiab daim ntawv pov thawj tsuas yog ua raws li EN hom. A519 niam txiv raj thiab lub honed bore yog kev txiav txim siab ywj pheej, yog li hais ob leeg.
Daim ntawv thov
Lub ASTM A519 4140 hydraulic lub tog raj kheej raj tau teev nyob rau txhua qhov chaw ua tiav, npaj tau- los - sib dhos lub tog raj kheej lub tog raj kheej yuav tsum nqa lub siab siab, kev poob siab thiab ntau lab lub voj voog yam tsis muaj kev tho txawv. A 4140 honed tube rau hydraulic lub tog raj kheej kev pabcuam yog tus qauv pub khoom noj rau hnyav- lub tog raj kheej lub luag haujlwm, thiab tsib daim ntawv thov pab pawg npog feem ntau xaj:
Hydraulic thooj voos kheej kheej
Qhov tseem ceeb siv. Excavator boom thiab caj npab cylinders, crane thiab loader thooj voos kheej kheej, thiab kev ua liaj ua teb loader caj npab khiav ntawm 160-350 bar nrog rau kev thauj khoom, thiab honed 4140 Q&T bore yog ib feem uas tau muab khi thiab coj lub piston.
Txhaj tshuaj molding thiab nias lub tog raj kheej
Clamping thiab txhaj tshuaj rams voj voog lab lab zaug hauv ib xyoos; 4140's qaug zog tiv thaiv thiab ruaj khov, honed bore kom to thiab downtime tsawg.
Mining thiab tawm - cov cuab yeej loj
Muab pov tseg- tsheb hoist cylinders thiab laum rig rams pom kev poob siab thiab qhov chaw abrasive. Hnyav-phab ntsa 4140 Q&T tej kas tham tiv yielding thiab bore qhab nia.
Muaj thiab mobile hydraulic actuators
Steering cylinders, hatch npog, lawj machinery thiab robotic caj npab siv tib lub raj uas ib tug meej, huv si bore shortens lub sij hawm los ua ke.
Aerospace thiab oilfield actuators
Lub dav hlau tsaws - iav hydraulics thiab lub taub hau tswj actuators siv 4140 (thiab 4130) qhov twg lub zog - rau - hnyav thiab traceable chemistry teeb meem.
Xaiv cov qib zoo thiab kev xa khoom
A519 4140 kev xa khoom, tsis yog lub npe qib, txiav txim siab tus nqi tsim. Rau hydraulic cylinder chim,quenched thiab tempered 4140 raj ntawm 28-32 HRC yog lub neej ntawd: nws muab lub zog tswj thiab qaug zog tiv thaiv lub siab chim siab xav tau. Annealed 4140 (≈414 MPa tawm los) yog mos heev rau kev pabcuam siab thiab yog lub tshuab ua haujlwm dawb, tsis yog lub thoob. Txias- rub tawm- nyuaj (+C) nqa cov kev ntxhov siab seem uas tuaj yeem cuam tshuam lub bore thaum lub sij hawm honing, yog li nws yog zam rau tej chim.
| Qhov xwm txheej | Hardness | Puas siv rau lub cev? |
|---|---|---|
| Q&T (+ QT) | 28-32 HRC | Yog - tus qauv rau lub siab chim chim |
| Normalized (+ N) | 190–240 HB | Weldable blanks, tsis yog -siab |
| Kev ntxhov siab -relieved (+SR) | 190–230 HB | Stable bore, lub luag hauj lwm lub teeb |
| Annealed (+A) | Tsawg dua lossis sib npaug li 197 HB | Machining Tshuag, tsis yog lub thoob |
Nyob rau sab bore, 4140 honed tube id kam rau ua H8 H9 thiab 4140 honed tube nto tiav Ra 0.2 txog 0.4 μm yog xaiv los ntawm kev foob hom thiab siab, thaum A519 4140 qhov ntev OD phab ntsa tau teev raws li sab nraud txoj kab uas hla × phab ntsa, tsis yog NPS lossis lub sijhawm.
Thaum qhov project tau sau tseg rau cov qauv European, qhia meej42CrMo4 honed raj (1.7225)rau EN 10305-1 (los yog EN 10297-1 rau phab ntsa hnyav); cov hlau yog tib yam li 4140 thiab daim ntawv pov thawj tsuas yog ua raws li EN hom. A519 niam txiv raj thiab lub honed bore yog kev txiav txim siab ywj pheej, yog li hais ob leeg.
Kev Tswj Xyuas Zoo thiab Kev Xeem
Chemistry thiab daim ntawv pov thawj.Kev ntsuas kub rau A519 txwv, tshaj tawm ntawm EN 10204 3.1 daim ntawv pov thawj zeb kuaj nrog cua sov thiab mob.
Kev kuaj xyuas tshuab.Tension, hardness thiab (rau Q&T) hardness pom zoo rau ASTM A370; elongation ntawm qhov ntsuas qhov ntev.
Ua pov thawj.ID gauging rau H7 / H8 / H9, roughness ntsuas (Ra / Rz), thiab ncaj nraim kuaj xyuas qhov ntev.
NDT ntawm niam txiv tube.UT lossis eddy-tam sim no qhov twg tau teev tseg, ua ntej honing.
Thib peb-kev soj ntsuam tog.SGS, BV lossis TÜV raug xaiv los ntawm tus neeg yuav khoom raws li kev thov; Kev huv huv rau NAS 8-10 qhov twg lub tog raj kheej sib dhos xav tau nws.
Vim li cas Source ASTM A519 4140 Honed Tube los ntawm GNEE
Muab ob qho tib si A519 niam txiv raj thiab qhov tseeb honing nyob rau hauv ib qho kev txiav txim, nrog rau cov mob thiab bore kam rau ua tau teev nyob rau tib daim ntawv pov thawj.
Tshuag thiab hloov dua siab tshiab hla OD 40–260 mm, ID thiab H7 / H8 / H9 kam rau ua, Ra 0.2–0.4 μm honed los yog Ra Less tshaj los yog sib npaug rau 0.2 μm SRB.
EN 10204 3.1 daim ntawv pov thawj, SGS/BV/TÜV thib peb-kev kuaj xyuas tog, thiab cua sov- tus lej traceability ntawm txhua qhov ntau.
Kev hais lus hauv 24 teev, nrog rau- txiav qhov tseem ceeb- mus rau -ntev, NAS tu thiab xa tawm seaworthy ntim.
Kev kuaj thiab tshuaj xyuas
Ntim thiab shipping
Xa koj cov khoom tiav lawm ID × OD (los yog phab ntsa yam tsawg kawg nkaus) × ntev, qib, kev xa khoom (Q&T 28–32 HRC), H kam rau ua thiab Ra, thiab peb pab pawg kws tshaj lij yuav lees paub qhov tshwj xeeb thiab xa rov qab cov lus hais nrog lub sijhawm ua haujlwm hauv 24 teev.
Thov ib qho ASTM A 519 4140 Honed Tube Quote
FAQ
ASTM A 519 4140 honed tube yog dab tsi?
ASTM A519 4140 honed tube yog txias-kos lossis kub-tiav seamless mechanical raj ua los ntawm UNS G41400 chromium-molybdenum alloy steel, nrog nws txoj kab uas hla ua tiav los ntawm precision honing rau H8 / H9 kam rau ua thiab Ra 0.2-0.4 μm. ASTM A519 txhais cov niam txiv raj; honing txhais lub bore, yog li ob txoj cai yuav tsum tau teev tseg nyias nyob rau hauv daim ntawv yuav khoom.
Puas yog ASTM A 519 4140 ntsuas rau kev pabcuam siab?
No. ASTM A519 yog cov khoom siv tubing tshwj xeeb thiab tsis muaj qhov ntsuas siab. Hydraulic-lub tog raj kheej tsim siab yuav tsum raug xam cais los ntawm lub raj geometry, kev xa khoom, kev tsim kho kawg thiab cov kev cai tsim tsim. Rau siab-cov kav dej, qhia ASTM A106 lossis A335 hloov.
Yuav ua li cas tus me nyuam mob yuav tsum 4140 honed tube muab nkag rau hauv hydraulic kheej kheej?
Rau hydraulic lub tog raj kheej chim, 4140 yog ib txwm muab quenched thiab tempered (Q&T) ntawm 28-32 HRC, nrog hardness tau lees paub ntawm daim ntawv pov thawj zeb xeem. Annealed 4140 (≈414 MPa yield) yog mos heev rau lub siab chim chim: nyob rau hauv ib qho kev tshaj tawm cov ntaub ntawv ib tug buyer teev tsuas yog '4140 raj', tau txais annealed Tshuag, thiab cov thoob mus tas li deformed nyob rau hauv ib tug 280 bar hydrotest vim hais tias tus tsim assumed 650+ MPa tawm los.
Dab tsi ID kam rau ua thiab nto tiav yog 4140 honed lub tog raj kheej raj muaj?
Kev ua tiav qhov siab ntev yog feem ntau H8 lossis H9 rau ISO 286-1 (H7 rau servo lossis leakage-cov thooj voos kheej kheej), thiab honed nto roughness yog Ra 0.2-0.4 μm nrog 30-45℃cross-hatch. Skived thiab roller burnished (SRB) raj ncav cuag Ra Tsawg dua lossis sib npaug li 0.2 μm. Kev ncaj yog feem ntau Tsawg dua los yog sib npaug li 0.3 mm / m, nrog Less tshaj los yog sib npaug li 0.1–0.15 mm / m muaj rau ntev, slender barrels.
Puas yog ASTM A 519 4140 yuav tsum tau kuaj hydrostatic?
Tsis yog los ntawm lub neej ntawd. Vim tias A519 tubing tsis raug ntsuas rau qhov kev pabcuam siab, kev kuaj hydrostatic yog qhov kev xaiv ntxiv (S1) uas yuav tsum tau teev rau ntawm daim ntawv xaj khoom. Ultrasonic lossis eddy- kev kuaj tam sim no kuj tau teev tseg thaum thov.
A{0}} sib npaug li cas hauv European system?
A519 4140 yog qib US; nws cov European sib npaug yog 42CrMo4 raws li cov khoom siv 1.7225 (EN 10083-3 / EN 10305-1), nrog rau Japanese SCM440 thiab Suav 42CrMo raws li qhov sib npaug ntxiv. Cov hlau yog ze li qub; qhov kev xaiv feem ntau yog tsav los ntawm qhov project cov ntaub ntawv thiab cov qauv ntawv pov thawj.
Puas yog ASTM A519 zoo ib yam li ASTM A106?
No. ASTM A519 yog seamless mechanical tubing rau machining thiab cov qauv siv, tsis muaj kev ntsuas siab thiab tsis tas yuav tsum muaj hydrotest. ASTM A106 yog seamless yeeb nkab rau siab - qhov kub thiab txias kev pab cuam, siab- ntsuas nrog txawv chemistry txwv thiab yuav tsum tau kuaj hydrostatic. Lawv tsis yog interchangeable.
A 519 4140 honed raj puas tuaj yeem welded?
Yog lawm, tab sis 4140 muaj cov pa roj carbon ntau sib npaug - CE_IIW ≈ 0.79 thiab CE_Pcm ≈ 0.52 rau cov cua sov ib txwm - yog li cov welds xav tau preheat ntawm 150-260℃thiab tswj kom txias kom tsis txhob txias tawg. Q&T mob xav tau kev saib xyuas ntau dua; cov pa roj carbon sib npaug tsis tau luam tawm ntawm daim ntawv pov thawj thiab yuav tsum tau thov nyias.