ASTM A705 Qib 630 Forgings|17-4PH Supplier

Zhengzhou Huitong Pipeline Equipment Co., Ltd. yog ib qho ntawm cov ua lag luam thiab cov neeg muag khoom ntawm astm a705 qib 630 forgings|17-4ph tsum nyob hauv Suav teb. Peb sov siab txais tos koj mus yuav peb astm a705 qib 630 forgings|17-4 ph neeg. Peb lub Hoobkas kuj lees txais cov kev txiav txim customized. Thov pub dawb kom txaus siab rau peb cov nqi sib tw thiab kev pabcuam zoo heev.

ASTM A705 Qib 630yog qhov specification rau hnub nyoog- hardening ( nag lossis daus -hardening, PH) stainless hlau forgings ua los ntawm17-4PH (UNS S17400). Qib nce mus txog lub zog tawm ntawm 1170 MPa (170 ksi) nyob rau hauv H900 mob thiab 725 MPa (105 ksi) hauv NACE-raws li H1150 mob. Nws cov kev tiv thaiv corrosion lem 304 stainless, tsis yog 316L, yog li nws tau teev nyob rau qhov twg alloy{11}}steel lub zog yuav tsum coexist nrog nruab nrab corrosion kuj - valve stems, twj tso kua mis shafts, impellers, thiab aerospace hardware.

Nws tsis yog rau cov dej hiav txwv immersed, sov chlorides, los yog kev pab cuam saum toj 315℃(600℃F). A705 630 forgings yog yuav los ntawm kev laus, tsis yog qib: H- tus lej ntawm daim ntawv xaj txiav txim siab seb qhov twg hla NACE cov kev pabcuam qaub lossis snaps cuam tshuam.

Ntsiab Cai

• A705 npog nag lossis daus- hardening stainless forgings; Qib 630 yog 17-4PH, kuj muag raws li UNS S17400, EN 1.4542, thiab JIS SUS630.
• Lub zog yog teem los ntawm kev laus: H900 muab 1310 MPa (190 ksi) tensile / 1170 MPa (170 ksi) yield; H1150 muab 930 MPa (135 ksi) tensile / 725 MPa (105 ksi) tawm los.
• Chloride kuj tsuas yog 304-chav kawm. PREN khiav 16-17 vim tias cov hlau yuav luag tsis muaj molybdenum lossis nitrogen. Tsis txhob siv rau hauv dej hiav txwv los yog sov chlorides.
• Rau kev pabcuam qaub raws li NACE MR0175 / ISO 15156-3, qhia H1150 lossis H1150M (hardness Tsawg dua lossis sib npaug rau 33 HRC / 311 HBW). H900 txog H1100 tshaj 33 HRC qab nthab thiab tsis tsim nyog.
• Forge ntawm 1170-1230℃(2150-}2250℃F), tsis txhob qis dua 950℃(1740℃F), tom qab ntawd tshuaj-anneal thiab hnub nyoog. Kev kho mob tom qab ua haujlwm yog qhov yuav tsum tau ua.
• Tus nqi yog li 1.5-2x 316L thiab 2-3x 304 rau bar; forged thiab NDT-tshuaj xyuas qhov chaw nqa tau tus nqi ntxiv thiab feem ntau yog hais rau ib daim duab.

ASTM A705 yog ASTM spec rau hnub nyoog - hardening stainless hlau forgings. Qib 630 yog qib txiav txim siab tshaj plaws hauv nws, thiab nws yog tib yam hlau uas lwm lub ntiaj teb hu.17-4PH, UNS S17400, EN 1.4542 (X5CrNiCuNb16-4), lossis JIS SUS630. Cov "17-4" npe nominal 17% chromium thiab 4% npib tsib xee; "PH" qhia tias nag lossis daus hardening.

Cov qib yog martensitic stainless ntxiv dag zog los ntawm tooj liab - nplua nuj precipitate uas tsim thaum lub sij hawm qis - kub aging step, tsis yog carbon. Ntawd ib leeg yog vim li cas nws thiaj li tau teev tseg: cov khoom yog machined muag hauv cov tshuaj - kho mob A, ces hnub nyoog mus rau tag nrho lub zog nrog tsuas yog 0.05-0.10% shrinkage. Rau txoj kev, kaw - kam rau ua forged Cheebtsam - valve lub cev, impellers, shafts - uas distortion-free hardening yog tag nrho cov ntsiab lus.

A705 tswj kev forging. Companion specs npog lwm yam khoom siv:ASTM A564 Cov Lus Qhia Tshwj Xeebrau bar thiab cov duab, ASTM A693 rau phaj thiab ntawv, AMS 5643 rau aerospace bar thiab forgings, thiab ASTM A182 F6a / A182 npog cov hnub nyoog martensitic qib uas flanges thiab fittings yog yuav los siab - tuav specs. Raws li cov ncauj lus kom ntxaws ntawm nplooj ntawv forged flange khoom, A705 630 yog muab ua cov nplhaib, thaiv, thiab ua tiav forged flanges rau roj thiab roj thiab kev pabcuam valve. Cov khoom siv feem ntau yog muab rau hauv Kev Kho Mob A (kev daws teeb meem) lossis ua ntej - hnub nyoog rau H- xwm txheej, nrog EN 10204 3.1 lossis 3.2 ntawv pov thawj.

Qhov taw qhia 2026 ex- tus nqi ua haujlwm (Shanghai, USD / kg) ntab nrog LME npib tsib xee, tooj liab, thiab ferro-niobium, tsis yog npib tsib xee ib leeg:

* Qhia tus nqi raws li xyoo 2026, raug rau Ni, Cu, thiab Nb kev lag luam hloov pauv, lub xeev kho cua sov, thiab xaj ntim.

Kev Hais Dawb

Forgings raug nqi ntau tshaj qhov sib npaug rau ob qho laj thawj: forged dawb paug poob 20-40% rau machining, thiab roj-thiab-gas forgings feem ntau yog UT- tshuaj xyuas rau ASTM A388 Class B lossis zoo dua ntxiv rau qhov hardness-tsim pov thawj ntawm ib lub tshav kub. A705 630 yog kwv yees li ib nrab ntawm tus nqi PH 13-8 Mo thiab ib feem peb ntawm Inconel 625, uas yog vim li cas nws yog lub neej ntawd thaum chloride tsis kam tswj.

ASTM A705 Qib 630 chemistry (dawb tsom xam, wt%):

Raws li ASTM A705 / A705M.

Chromium tsim cov zaj duab xis passive thiab khoom siv ze li ntawm tag nrho cov pitting kuj. Nickel khaws cov qauv martensitic tseem ua haujlwm tau. Copper yog tus tsav hardening - nplua Cu- nplua nuj precipitates pin dislocations thaum laus. Niobium (columbium) refines grain thiab stabilizes tus qauv. Molybdenum yog capped ntawm 0.50% thiab feem ntau yog zero, uas yog vim li cas PREN nyob ntawm 16-17.

Yam khoom yam tsawg kawg nkaus los ntawm kev laus (ntev, ntu txog 75 hli / 3 nyob rau hauv, ib ASTM A564 / A705):

Cov nqi muag muag 5-8% hauv ntu tuab dua 75 hli (3 nti). Kev lag luam yog tsau: siab dua kub ua lag luam lub zog rau toughness thiab kev ntxhov siab-corrosion kuj. H900 yog qhov muaj zog tshaj plaws thiab nkig tshaj plaws; H1150 yog qhov nyuaj tshaj plaws thiab NACE-raws li.

Cov khoom siv yog hlau nplaum hauv txhua qhov xwm txheej - cov qauv martensitic, tsis zoo li 304/316. Qhov ntawd yog qhov tseem ceeb rau kev sib nqus sensors thiab tswj nws tawm rau MRI thiab tsis yog- sib nqus sib nqus.

17-4PH corrosion tus cwj pwm yog qhov zoo tshaj plaws piav raws li "304-chav kawm nrog lub zog ntxiv." Hauv huab cua, dej tshiab, thiab cov kua qaub me me thiab ntsev, nws ua tau zoo li 304 stainless. Nws tuav lub hardenable 400-series (410, 420) kom meej meej. Nws tsis phim 316L hauv kev pabcuam chloride.

PREN=%Cr + 3.3 x %Mo + 16 x %N. Nrog ~16-17% Cr thiab qhov tseem ceeb tsis muaj Mo lossis N, PREN av ntawm 16-17 - qis dua 316L (24-26) thiab qis dua 304L (~19). Tsis muaj ASTM G48 CPT daim duab tau luam tawm rau qib vim tias qhov qis PREN tso nws tawm ntawm kev pabcuam chloride-intensive; txoj cai hauv teb yog kom chlorides dilute thiab kub qis.

Kev kub siab kev laus txhim kho SCC kuj. Tias yog vim li cas H1150, tsis yog H900, yog lub neej ntawd rau roj - thiab - roj valve stems. Passivation tom qab machining yog tus qauv, thiab tsis pub dawb- machining sulfur (S Tsawg dua lossis sib npaug li 0.030%) ua kom lub ntsej muag huv ntawm cov hlau uas yuav cov noob xeb.

Qib tsis yog siab - cov khoom kub. Cov kev pab cuam xaus nyob ze 315℃(600℃F). Kev ncua sij hawm nyob rau hauv 370-500℃band caw 475℃embrittlement (sigma-theem thiab chromium-enriched ferrite nag lossis daus) uas tua chav-kub ductility. Nws kuj tsis tsim nyog rau lub luag haujlwm cryogenic tiag tiag - tsis zoo li 304/316, uas nyob ruaj khov rau -196℃(320℃F).

17-4PH welds zoo li 300 series tab sis nrog ib txoj cai uas tsis quav ntsej: weld nyob rau hauv Cov Kev Cai A, ces kev daws teeb meem-anneal thiab hnub nyoog tag nrho lub rooj sib txoos. Vuam ib qho twb- laus ib feem tawm ntawm HAZ ib nrab re- daws thiab ib nrab dhau los- laus, yog li qhov kev sib tw hardness qhia tau hais tias ib pawg mos - thiab qhov ntawd yog qhov pib ua tsis tiav.

• Cov txheej txheem:GTAW (TIG), GMAW (MIG), SMAW (stick), PAW all work.
• Filler hlau:AWS A5.9 ER630 / A5.4 E630. Qee lub khw siv 17-7PH muab tub lim, tab sis ER630 yog qhov sib tw ncaj qha.
• Preheat:ib txwm tsis muaj. Hauv qab 16℃(60℃F) lossis ntawm cov pob qij txha tuab, txwv tsis pub, 150℃(300℃F) preheat pab.
• PWHT:yuav tsum tau rov qab muaj zog - tshuaj anneal (1038℃/ 1900℃F, 30 min ib 25 mm) ces hnub nyoog mus rau lub hom phiaj mob.
• Forging:so ~ 1170-1230℃(2150-2250℃F), tsis ua haujlwm qis dua 950℃(1740℃F). Tuav lub qhov rais forging kom tsis txhob muaj kev tawg sab hauv thiab qhov chaw laps, tom qab ua haujlwm daws kev kho mob.
• Machining:tshuab hauv Condition A (zoo ib yam li 304), ces muaj hnub nyoog. Hnub nyoog H900 ua haujlwm- khov sai thiab noj cov cuab yeej; Carbide qib thiab ntau cov coolant. Tso cai 0.05-0.10% shrinkage nyob rau hauv tus tsim kam rau ua.

Ib tus neeg ua haujlwm sab qaum teb Hiav Txwv peb tau ua haujlwm nrog khiav H1150 valve stems hauv qab - roj tsheb ciav hlau rau rau xyoo uas tsis muaj qhov xwm txheej SSC; tib stems nyob rau hauv H1025 yuav ua tsis tau tejyam 33 HRC NACE qab nthab nyob rau hauv lub quote theem.

Tiag -Kev Kawm Txuj Ci Ntiaj Teb

Field xyaum diverges los ntawm datasheet nyob rau hauv peb txoj kev rov tshwm sim.

Ua ntej, qhov xwm txheej tau teev tseg tsis raug. Ib qho yuam kev feem ntau yog xaj "17-4PH" yam tsis muaj tus lej H, tom qab ntawd pom lub khw xa H900 - nyuaj heev rau kev pabcuam qaub thiab ua rau muaj kev cuam tshuam. Ib txwm hais qhov xwm txheej ntawm PO; 32 HRC nyeem ntawv ntawm "H900" txhais tau tias nws yeej tsis muaj hnub nyoog rau spec.

Qhov thib ob, kev hloov pauv zais hauv qhov pom tseeb . 17-4PH, 15-5PH, thiab 410 zoo ib yam thiab kev kuaj xyuas qhov tawv ib leeg yuav tsis cais lawv. Qhov kho yog OES pov thawj ntawm tooj liab (3-5%) thiab niobium (0.15-0.45%); 15-5PH qhia siab dua Ni thiab tsis txhob txwm Nb, thiab 410 qhia tsis muaj tooj liab txhua.

Thib peb, engineers qhia tias qhov loj tshaj plaws tiag tiag- hom kev ua tsis tiav hauv ntiaj teb yog crevice corrosion nyob rau hauv threads thiab gasketed pob qij txha raug chloride-laden, stagnant kua. Lub zos PREN nyob rau hauv ib tug crevice te thiab nres pib qhov twg koj tsis pom nws mus txog rau thaum ib tug hydrostatic xeem tsis. Cov tshuaj yog lub vojvoog ntawm cov ces kaum, yaug lub rooj zaum gasket, thiab hauv kev pabcuam chloride siv H1150 lossis nce mus rau duplex.

Rau cov twj tso kua mis thiab lub valve sab hauv uas lub zog tswj hwm thiab cov kua dej qab zib los yog qaub qaub, A705 630 yog tus nqi - hu tau zoo. Thaum cov tshuaj chlorides los yog kub tsis txias, nce mus txog 316L (corrosion) los yog qib duplex . 15-5PH tau txais nws cov nqi tsuas yog thaum transverse (los ntawm -} tuab) toughness los yog huv si suav nrog suav qhov tseem ceeb; PH 13-8 Mo yog tshwj tseg rau kev ya davhlau-tseem ceeb heev.

Yog hais tias tus nqi yog qhov txwv thiab chloride / kub yog me me, 316L los yog 304L muab zoo corrosion ntawm tus nqi qis. Rau qhov ua tau zoo tshaj plaws yam tsis muaj kev txwv nyiaj txiag, nyob nrog A705 630 nyob rau hauv txoj cai lossis txav mus rau PH 13-8 Mo.

Teb cov lus no ua ntej koj cog lus rau A705 630:

1. Qhov kev ntxhov siab siab tshaj plaws li cas?Yog tias koj xav tau> 700 MPa (100 ksi) tawm los ntawm stainless, 630 yog ua si. Hauv qab no, 316L yog pheej yig dua thiab ntau dua corrosion-resistant.

2. Kev pabcuam qaub?Txhua H2S saum toj no 0.05 psi (0.3 kPa) ib nrab siab → qhia H1150 lossis H1150M thiab xav tau 100% hardness pov thawj ntawm MTR.

3. Chloride raug?Dilute thiab ambient → 630 ua haujlwm. Sov, concentrated, los yog raus → 316L los yog 2507.

4. Kub?Tshaj 315℃(600℃F) txuas ntxiv, lossis cryogenic hauv qab -30℃(-20℃F) → 630 yog cov hlau tsis raug.

5. Sib nqus xav tau?Tsis yog -magnetic xav tau → 630 tawm (nws yog martensitic, ib txwm sib nqus).

Forged 630 Cheebtsam yog ib txwm muab nyob rau hauv Mob A lossis ua ntej - hnub nyoog, nrog UT rau ASTM A388 thiab EN 10204 3.1/3.2 MTR. Nplooj ntawv forged yeeb fittings sau tau tshaj A705 630 thiab F6a martensitic fittings rau valve thiab twj tso kua mis.

1. Qhov txawv ntawm ASTM A705 Qib 630 thiab 17-4PH yog dab tsi?

Lawv yog tib yam hlau. A705 yog ASTM forging spec; Qib 630 yog qib hauv nws. "17-4PH" yog lub npe alloy (UNS S17400, EN 1.4542). Ib lub bar lossis phaj yuav es tsis txhob nqa A564 lossis A693, tab sis cov chemistry thiab cov khoom zoo ib yam.

2. Yam xwm txheej twg kuv yuav tsum qhia rau NACE MR0175 kev pabcuam qaub?

H1150 los yog H1150M. Ob leeg tuav hardness ntawm lossis qis dua 33 HRC (311 HBW) qab nthab hauv NACE MR0175 / ISO 15156-3 Table A.22. H900 txog H1100 tshaj lub qab nthab thiab tsis tsim nyog los ntawm kev pabcuam qaub.

3. Dab tsi muab hlau hlau kuv siv los vuam A705 630 forgings?

Matching AWS A5.9 ER630 (or A5.4 E630) filler. Weld nyob rau hauv qhov xwm txheej A, tom qab ntawd kev daws teeb meem -anneal thiab hnub nyoog ntawm kev sib dhos. Vuam ib qho uas twb muaj lawm - hnub nyoog ib feem softens HAZ thiab yog ib txwm ua rau kev ua tsis tiav.

4. Puas tuaj yeem 17-4PH hloov 316L?

Rau lub zog, yog - 630 hauv H1025 xa txog 1000 MPa (145 ksi) tawm los piv rau 170 MPa (25 ksi) rau 316L, kwv yees li rau lub sijhawm. Rau corrosion, tsis muaj: 630's PREN yog 16-17 piv rau 316L's 24-26, yog li nws poob hauv chlorides thiab sov, aggressive media.

5. Puas yog 17-4PH zoo hauv dej hiav txwv?

Ntws, nyob ze - nto txaws - lub sij hawm luv luv. Cov dej hauv dej los yog dej tsis tu ncua ua rau pitting thiab crevice corrosion vim PREN tsuas yog 304-chav kawm. Rau dej hiav txwv immersed, siv super duplex 2507 los yog 6Mo.

6. Qhov siab tshaj plaws ua haujlwm kub yog dab tsi?

Txog 315℃(600℃F) rau kev pabcuam txuas ntxiv. Saum toj no tias nag lossis daus- cov qauv tawv tawv poob lub zog, thiab 370-500℃band txaus ntshai 475℃embrittlement. Nws tsis yog qib high-temperature.

7. Puas yog A705 630 hlau nplaum?

Yog, nyob rau hauv txhua yam mob. Nws yog martensitic thiab nyob ruaj khov tom qab laus, tsis zoo li 304/316. Tsis txhob qhia nws qhov twg tsis yog - cov khoom siv hlau nplaum yuav tsum tau.

8. Kuv yuav qhia li cas tiag 630 ntawm 15-5PH lossis 410?

Lub hardness check yuav tsis cais lawv. Siv OES kom paub meej tias tooj liab ntawm 3-5% thiab niobium ntawm 0.15-0.45%. 15-5PH muaj ntau dua nickel thiab tsis txhob txwm niobium; 410 qhia tias xoom tooj liab. Ib txwm rov ua kom zoo dua EN 10204 3.1 kab ntawv pov thawj los ntawm kab nrog tus lej stencilled kub.

9. Vim li cas lub tshuab nyob rau hauv Qhov A tsis muaj hnub nyoog?

Cov tshuab A zoo li 304. Hnub nyoog H900 ua haujlwm- khov sai, zom cov cuab yeej, thiab xav tau kev zam nruj. Machining mos ces laus kuj siv 0.05-0.10% shrinkage los tuav precision - hnub nyoog tom qab qhov kawg txiav.

10. Puas yog 17-4PH xav tau kev kho cua sov tom qab vuam?

Yuav kom rov qab muaj zog tag nrho, yog: tshuaj anneal ces hnub nyoog mus rau lub hom phiaj mob. Yog tsis muaj nws, lub weld thiab HAZ zaum ntawm cov khoom qis dua lub hauv paus hlau. Rau qhov tsis yog -load-cov kabmob welds, qhov sib txuam ua ke thiab cov laus hauv zos tuaj yeem txaus, tab sis lees paub tawm tsam daim duab.

11. Tus lej "H" txhais li cas?

Nws yog qhov kub thiab txias hauv℃F. H900=900℃F (482 degree), H1025=1025℃F (552 degree), H1150=1150℃F (621 degree). Tus lej siab dua=qis zog, siab dua toughness thiab corrosion kuj.

12. Puas yog 630 tus nqi ntau dua li 316L?

Kwv yees li 1.5-2x rau bar thiab 1.8-2.5x rau phaj hauv 2026, tsav los ntawm npib tsib xee, tooj liab, thiab niobium cov ntsiab lus ntxiv rau cov kauj ruam laus. Forged thiab UT-tshuaj xyuas qhov chaw tau hais los ntawm ib qho kev kos duab thiab ua haujlwm siab dua.

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