1. Metallurgical Identity: Kev sib raug zoo ntawm UNS N10665, Hastelloy B-2, thiab Hastelloy B-3 yog dab tsi? Puas yog lawv interchangeable rau round bar daim ntaub ntawv?
Q: Peb muaj cov lus qhia tshwj xeeb hu rau Hastelloy UNS N10665 puag ncig bar rau cov khoom siv hydrochloric acid. Peb tus neeg muag khoom tau muab cov khoom lag luam npe hu ua "Hastloy B-2." Qhov no puas yog tib yam? Tsis tas li, peb puas tuaj yeem hloov B-3 yog tias B-2 tsis muaj?
A: Qhov no yog ib qho kev tsis meej pem hauv kev lag luam. Kev nkag siab txog kev sib raug zoo ntawm cov npe no yog qhov tseem ceeb rau kev xaiv cov khoom tsim nyog thiab tsis txhob raug nqi yuam kev.
Direct Equivalency:
UNS N10665 yog Tus Txheej Txheem Kev Sau Npe Sib Koom Tes rau Hastelloy B-2. Yog tias koj cov lus qhia tshwj xeeb hu rau UNS N10665, thiab koj tus neeg muag khoom muab "Hastloy B-2" nrog Daim Ntawv Qhia Txog Mill Test qhia txog kev sib tw ntawm UNS N10665, lawv tau muab cov khoom siv raug.
Chemistry txhais:
UNS N10665 (B-2) muaj ntau yam chemistry:
Nickel: Sib npaug (feem ntau 65% min)
Molybdenum: 26.0% - 30.0%
Hlau: 2.0% max
Chromium: 1.0% max
Cobalt: 1.0% max
Manganese: 1.0% max
Nqe Lus Nug B-3 (UNS N10675):
Hastelloy B-3 yog lub npe UNS N10675. Nws yog ib qho kev sib cais, txhim kho alloy.
Puas yog lawv interchangeable? Tsis yog, tsis yog tsis muaj kev tshuaj xyuas engineering.
Chemistry Sib txawv: B-3 muaj kev tswj nruj dua ntawm cov hlau thiab chromium thiab muaj cov me me ntxiv uas ua rau lub microstructure ruaj khov. Nws yog tsim los kov yeej cov teeb meem embrittlement ntawm B-2.
Corrosion Performance: Hauv cov ntshiab hydrochloric acid, ob leeg ua tau zoo ib yam. Txawm li cas los xij, B-3 zam me me oxidizing impurities zoo dua B-2.
Vuam / Fabrication: B-3 muaj kev zam txim ntau dua thaum vuam thiab thermal raug.
Kev Txiav Txim Siab Hloov:
Yog hais tias tus specification mandates UNS N10665: Koj yuav tsum muab B-2 tshwj tsis yog tus neeg siv khoom pom zoo qhov sib txawv. B-3 tsis yog kev hloov pauv tsis siv neeg tsis muaj kev pom zoo.
Yog tias koj muaj kev xaiv: Rau cov qauv tsim tshiab, B-3 (UNS N10675) feem ntau nyiam vim nws txoj kev txhim kho metallurgical stability. Txawm li cas los xij, rau cov khoom siv uas twb muaj lawm tsim nyob ib puag ncig B-2, lo nrog B-2 tshwj tsis yog tsim nyog.
Kev pom zoo:
Txheeb xyuas tus neeg muab khoom Mill Test Report. Yog tias nws pom tias ua raws li UNS N10665 chemistry, txais cov khoom siv B-2. Yog tias koj xav hloov B-3, tau txais kev pom zoo los ntawm tus kws ua haujlwm ntawm cov ntaub ntawv, sau cov ntaub ntawv hloov pauv thiab lees paub kev sib raug zoo nrog ib puag ncig kev pabcuam.
2. Mechanical Properties: Cov cuab yeej cuab tam yam tsawg kawg nkaus rau UNS N10665 round bars hauv qab ASTM B335 yog dab tsi, thiab lawv txawv li cas ntawm B-3?
Q: Peb tab tom machining tus ncej los ntawm UNS N10665 round bar rau lub twj tso kua mis hauv HCl kev pabcuam. Tus tsim yuav tsum muaj qhov tsawg kawg nkaus lub zog ntawm 40 ksi ntawm chav tsev kub. Puas yog tus qauv annealed bar ua tau raws li qhov no, lossis peb puas xav tau kev npau taws tshwj xeeb?
A: Rau UNS N10665 (Hastelloy B-2) puag ncig tuav, kev tswj xyuas tshwj xeeb yog ASTM B335 (Standard Specification rau Nickel-Molybdenum Alloy Qws, Bar, thiab Hlau). Nkag siab txog cov khoom tshwj xeeb piv rau cov khoom ib txwm yog qhov tseem ceeb rau kev tsim.
ASTM B335 Yam yuav tsum tau muaj yam tsawg kawg nkaus (Annealed Condition):
Rau UNS N10665 (B-2) puag ncig tuav hauv cov tshuaj annealed mob, ASTM B335 qhia meej:
Tensile zog: 110 ksi (760 MPa) yam tsawg kawg nkaus
Yield zog (0.2% offset): 45 ksi (310 MPa) yam tsawg kawg nkaus
Elongation: 40% yam tsawg kawg nkaus hauv 2 nti (50mm)
Hardness: Feem ntau 100 HRB siab tshaj plaws (cov ntaub ntawv, tsis tas yuav tsum tau)
Teb rau koj cov lus nug:
Yog lawm, tus qauv annealed UNS N10665 bar yuav ua tau raws li koj qhov kev xav tau 40 ksi yooj yim. Qhov tsawg kawg nkaus tau teev tseg yog 45 ksi, uas muab 5 ksi margin saum koj qhov kev xav tau tsim. Qhov tseeb qhov tseem ceeb yog feem ntau siab dua, xws li ntawm 50-60 ksi.
Sib piv rau B-3 (UNS N10675):
ASTM B335 kuj tseem suav nrog B-3, nrog rau qhov sib txawv me ntsis:
Yield zog (B-3): 40 ksi (276 MPa) yam tsawg kawg nkaus
Lus Cim: B-3 yeej muaj me ntsisqisQhov tsawg kawg nkaus tawm lub zog tshaj B-2. Qhov no qhia txog qhov sib txawv ntawm metallurgical; B-3 yog tsim los rau kev ruaj ntseg, tsis tas yuav muaj zog dua.
Kev xaiv ua haujlwm txias:
Yog tias koj xav tau lub zog loj dua (piv txwv li, 80+ ksi tawm los), koj tuaj yeem hais kom txias kos lossis txias tiav UNS N10665 bar. Txawm li cas los xij, qhov no los nrog kev ua lag luam -offs:
Txo ductility
Residual stresses
Muaj peev xwm rau kev ntxhov siab corrosion tawg hauv qee qhov chaw
Tej zaum yuav xav tau kev ntxhov siab
Kev pom zoo tsim:
Rau cov twj tso kua mis hauv HCl kev pabcuam, qhov kev mob annealed yog nyiam. Kev sib xyaw ua ke ntawm 45 ksi yam tsawg kawg nkaus tawm los thiab 40% elongation muab zoo heev toughness thiab qaug zog kuj. Tsis txhob rub cov khoom txias rau daim ntawv thov no tshwj tsis yog tias tsim nyog rau lub zog, thiab yog tias siv, xyuas kom muaj kev ntxhov siab zoo.
Kev txheeb xyuas:
Thaum koj tau txais cov khoom, thov Daim Ntawv Qhia Txog Mill Test thiab txheeb xyuas qhov tseeb tensile thiab cov txiaj ntsig tau. Lawv yuav tsum tau yooj yim tshaj ASTM B335 minima.
3. Thaum tshav kub kub Response: Rau loj - txoj kab uas hla UNS N10665 puag ncig tuav, qhov kev pom zoo yog dab tsi yog qhov kev daws teeb meem annealing kub thiab quench txoj kev kom ua tiav cov khoom sib xws?
Q: Peb tab tom tsim loj - txoj kab uas hla (12") UNS N10665 puag ncig los ntawm forged billets. Tom qab ua haujlwm kub, peb yuav tsum tau ua qhov kev daws teeb meem zaum kawg. Qhov kub thiab txias npaum li cas kom peb ua tiav qhov muag muag, corrosion-cov qauv tiv thaiv thoob plaws hauv ntu tuab?
A: Thaum tshav kub kub kho qhov loj -inch UNS N10665 bars yog ib qho haujlwm tseem ceeb. Lub hom phiaj yog ua kom tiav tag nrho recrystallized, homogeneous austenitic qauv dawb los ntawm embrittling theem, tshwj xeeb tshaj yog nyob rau hauv nruab nrab ntawm lub bar qhov twg txias yog qeeb.
Kev daws teeb meem Annealing Parameters:
Qhov kub thiab txias:
Lub hom phiaj: 1065℃txog 1120℃(1950℃F txog 2050℃F).
Lub Sijhawm Soak: Lub sijhawm txaus los xyuas kom qhov chaw ntawm 12 "bar ncav cuag qhov kub ntawm lub hom phiaj, txoj cai dav dav yog 1 teev ib nti ntawm tuab, tab sis qhov no yuav tsum tau xyuas los ntawm cov thermocouples muab tso rau hauv cov chaw sawv cev.
Lub Quench (The Critical Step):
Qhov yuav tsum tau muaj: Kev ua kom txias ceev yog qhov tseem ceeb los hla qhov "kev txiav txim" thiab nag lossis daus ntau (550℃txog 850 degree) qhov twg B-2 ua nkig.
Txoj kev: Dej quenching yog yuav tsum tau rau loj diameters. Lub bar yuav tsum tau hloov los ntawm lub cub tawg mus rau lub quench tank sai sai (nyob rau hauv 30-60 vib nas this siab tshaj plaws) kom tsis txhob kub poob ua ntej quenching.
Quench Tank: Lub tank yuav tsum muaj cov dej ntim txaus thiab kev ntxhov siab kom tswj tau qhov txias txias nruab nrab thoob plaws hauv qhov dej. Stagnant, dej sov yuav tsis txias qhov chaw nrawm txaus.
Kev sib tw nrog 12 "inch:
Txawm tias muaj dej quenching, qhov nruab nrab ntawm 12 "bar yuav txias qeeb dua qhov saum npoo.
Daim Ntawv Cog Lus Xeem: Yog tias ua tau, suav nrog qhov txuas txuas txuas ntxiv lossis ib qho kev sim cais ntawm tib txoj kab uas hla hauv cov khoom siv cua sov.
Sectional Testing: Tom qab kev kho cua sov, txiav ib tug hlais hlais los ntawm ib tug sawv cev bar kawg. Ua hardness traverses ntawm nto mus rau qhov chaw.
Tau: Uniform hardness hla ntu (piv txwv li, 88-95 HRB).
Unacceptable: Hardness increase toward the center (>5 ntsiab lus HRB qhov txawv) qhia tias tsis tiav annealing.
Microstructure: Polish thiab etch ib tus qauv los ntawm qhov chaw. Saib rau equiaxed nplej nrog annealing ntxaib. Tsis muaj qhov tsaus ntuj -etching grain ciam teb precipitates paub meej tias ua tiav.
Yog tias dej quenching tsis txaus:
Rau cov diameters loj heev, qhov chaw yuav tsis txias sai txaus. Hauv cov xwm txheej zoo li no:
Polymer Quenchants: Qee lub khw siv dej - cov tshuaj polymer uas ua kom txias qeeb dua li dej tab sis sai dua huab cua, txo cov thermal stress thaum tseem ua tiav cov khoom tsim nyog. Qhov no yuav tsum tau validation.
Re-forging: Xav txog seb qhov kawg ntawm txoj kab uas hla tuaj yeem ua tiav los ntawm kev ua haujlwm kub uas xaus rau hauv qab nag lossis daus, tom qab ntawd quench tam sim ntawd.
Kev pom zoo:
Rau 12" UNS N10665 tuav, qhia meej "kev daws teeb meem ntawm 1080℃yam tsawg kawg nkaus, ua raws li cov dej nrawm nrawm." Xav kom tus neeg muag khoom muab pov thawj ntawm txoj kev quench thiab, yog tias ua tau, hardness traverse tshwm sim nyob rau hauv seem.
4. Machinability Rating: UNS N10665 puag ncig bar piv rau 316L stainless hlau li cas ntawm machinability, thiab yuav tsum tau hloov kho li cas rau kev tsim cov khoom precision?
Q: Peb yog lub khw muag khoom siv los ua cov khoom los ntawm 316L stainless hlau puag ncig bar. Peb muaj daim ntawv cog lus tshiab uas yuav tsum muaj cov khoom siv los ntawm UNS N10665. Peb lub sijhawm voj voog yuav qeeb qeeb npaum li cas, thiab cov cuab yeej hloov pauv twg yog qhov tseem ceeb?
A: Koj tab tom txav los ntawm ib qho ntawm cov hlau tsis zoo tshaj plaws mus rau ib qho ntawm cov nickel nyuaj tshaj plaws -raws li alloys. Cia siab tias yuav muaj kev hloov pauv loj. Ntawm no yog qhov kev sib piv tiag tiag thiab kev taw qhia.
Machinability Rating:
Yog hais tias peb muab 316L stainless hlau ib tug machinability ntsuam xyuas ntawm 100% (baseline):
UNS N10665 (Hastelloy B-2) feem ntau yog 15-20%. Qhov no txhais tau tias nws yog 5 mus rau 6 lub sij hawm nyuaj rau tshuab tshaj 316L.
Vim li cas qhov txawv:
Ua Haujlwm Hardening Rate: B-2 ua hauj lwm nyuaj heev. Thaum lub sij hawm lub cuab tam kov cov khoom, qhov saum npoo hardens.
Siab Shear Strength: Cov ntsiab lus molybdenum (28%) muab lub zog siab ntawm qhov kub siab, yuav tsum tau muaj zog ntau dua los txiav.
Tsawg Thermal Conductivity: Thaum tshav kub kub nyob hauv cheeb tsam txiav, tsis yog lub nti, ua rau cov cuab yeej siv ceev ceev.
Galling Tendency: Lub alloy xav welding nws tus kheej mus rau lub cuab tam txiav nyob rau hauv siab thiab kub.
Qhov tseem ceeb hloov kho rau Machining UNS N10665:
Ceev thiab Pub (Txoj Cai "Kho Mus Ntxiv"):
Txiav ceev: Txo los ntawm 70-80% piv rau 316L.
316L: 150-250 SFM
UNS N10665: 40-70 SFM (nrog carbide)
Tus nqi pub: nce pub piv rau 316L. Koj yuav tsum txiavhauv qabcov haujlwm- hardened txheej. Lub teeb pub ua rau rubbing thiab ua haujlwm hardening.
Qhov tob ntawm kev txiav: Khaws qhov sib npaug, txaus qhov tob ntawm kev txiav. Tsis txhob cia lub cuab yeej nyob los yog rub.
Tooling:
Khoom siv: tsuas yog siv cov carbide inserts (C2 lossis C3 qib). Cov cuab yeej HSS feem ntau tsis haum rau kev tsim khoom.
Txheej: TiAlN lossis AlTiN coated carbides yog qhov tseem ceeb. Lawv muab thermal barrier thiab lubrication.
Geometry: Siv cov kaum sab xis zoo, cov npoo ntse, thiab cov chip tawg tsim rau cov nickel alloys.
Coolant:
Flood Coolant: Siab ntim, siab siab. Lub coolant yuav tsum ncav cuag qhov txiav ntug kom tshem tawm cov cua sov.
Hom: Siv dej-soluble coolants nrog siab siab (EP) additives. Rau tapping, xav txog cov roj chlorinated txiav.
Tshuab Rigidity:
Lub tshuab cuab yeej yuav tsum nruj. Ib qho kev vibration lossis kev sib tham yuav ua rau kev ua haujlwm nyuaj thiab cov cuab yeej tsis ua haujlwm.
Lub Sijhawm Cycle Expected:
Tiag tiag, cia siab tias lub sijhawm machining lub sijhawm yuav tsum yog 3 mus rau 5 zaug ntev dua li qhov sib npaug 316L qhov sib npaug, ua rau qeeb qeeb thiab hloov cov cuab yeej ntau zaus.
Kev pom zoo:
Ua ntej ntau lawm, khiav ib qho kev xeem uas siv cov kev ntsuas saum toj no. Saib xyuas cov cuab yeej hnav zoo. Thawj qhov kos npe ntawm flank hnav lossis ua tau - sab ntug txhais tau tias nws yog lub sijhawm los hloov cov ntxig ntxig. Hauv B-2, "dull" tshwm sim sai, thiab cov cuab yeej npub ua rau qhov chaw ntog.
5. Traceability thiab Certification: Yuav tsum muaj cov ntaub ntawv tshwj xeeb dab tsi rau UNS N10665 round bars siv nyob rau hauv kev siv tshuaj tseem ceeb?
Q: Peb tab tom muab UNS N10665 puag ncig bar rau cov neeg siv khoom uas tsim cov reactors rau lub tuam txhab tshuaj. Lawv tab tom thov "tag nrho traceability" thiab "EN 10204 3.1 ntawv pov thawj." Peb tus qauv lag luam MTR yog ib nplooj ntawv. Puas yog txaus?
A: Rau cov ntawv thov tseem ceeb, tshwj xeeb hauv kev lag luam tshuaj thiab tshuaj ua lag luam, tus qauv ib - nplooj ntawv lag luam MTR feem ntau tsis txaus. Cov kev cai rau "tag nrho traceability" thiab "EN 10204 3.1" qhia txog qhov xav tau rau cov ntaub ntawv pov thawj ntawm kev tswj kom zoo thiab cov saw hlau ntawm kev saib xyuas.
Nkag siab EN 10204:
Cov txheej txheem European no txhais cov hom ntaub ntawv tshuaj xyuas:
EN 10204 2.2 (Test Report): Ib nqe lus yooj yim ntawm kev ua raws cai. Cov chaw tsim khoom tshaj tawm cov khoom ua tau raws li qhov yuav tsum tau ua, tab sis tsis muaj cov txiaj ntsig tshwj xeeb txuas nrog. Qhov no feem ntau yog tsis tsim nyog rau cov khoom tseem ceeb.
EN 10204 3.1 (Kev Tshuaj Xyuas Daim Ntawv Pov Thawj 3.1): Cov chaw tsim khoom tshaj tawm kev ua rawsthiabmuab cov ntawv xeem tshwj xeeb. Qhov tseem ceeb, kev tshuaj xyuas yog ua los ntawm cov chaw tsim khoom ntawm tus kheej lub tuam txhab tsim nyog uas yog ywj pheej ntawm kev tsim khoom. Qhov no yog qhov tsawg kawg nkaus tau txais rau feem ntau cov ntawv thov tseem ceeb.
EN 10204 3.2 (Kev Tshawb Fawb Daim Ntawv Pov Thawj 3.2): Kev tshuaj xyuas yog ua los ntawm ib tus thib peb- tog (tus neeg soj ntsuam ywj siab lossis tus neeg sawv cev ntawm cov neeg siv khoom) ntxiv rau cov chaw tsim khoom cov kev sim. Qhov no yog qib siab tshaj plaws.
Yuav Ua Li Cas Tsim Nyog 3.1 Daim Ntawv Pov Thawj rau UNS N10665 Yuav Tsum Muaj:
Product Identification:
UNS Number (N10665) thiab txhua lub npe lag luam (xws li Hastelloy B-2).
Khoom daim ntawv (Round Bar).
Dimensions (inch thiab ntev).
Traceability:
Thaum tshav kub kub Number: Tus cim cim rau lub yaj.
Tus lej Bar Tus Kheej: Yog tias xav tau, txhua lub bar yuav tsum tau rov qab mus rau qhov kub. Daim ntawv pov thawj tuaj yeem sau ntau yam ntawm tus lej bar uas tau them.
Chemistry:
Tag nrho cov ntsiab lus tsom xam (Ni, Mo, Fe, Cr, Co, Mn, C, Si, thiab lwm yam) los ntawm cov cua sov (ladle tsom xam) lossis los ntawm cov qauv khoom tiav (kuaj xyuas).
Mechanical Properties:
Tensile zog, yield zog (0.2% offset), thiab elongation feem pua ntawm cov qauv uas sawv cev rau ntau.
Hardness qhov tseem ceeb (yog tias teev).
Kev kho cua sov:
Daim ntawv tshaj tawm lees paub cov khoom siv tau daws cov tshuaj annealed, feem ntau suav nrog qhov ntsuas kub thiab quench txoj kev.
Kev xeem thiab cov txiaj ntsig:
Cov txiaj ntsig ntawm ib qho kev ntsuam xyuas ntxiv (xws li, ASTM G28 corrosion test, ultrasonic kuaj, grain loj).
Cov Lus Qhia Ua Raws Cai:
Ib nqe lus hais tias cov khoom ua tau raws li ASTM B335 thiab cov neeg siv khoom yuav khoom yuav tsum tau ua.
Qhov teeb meem "Ib -Page MTR":
Ib daim ntawv - nplooj ntawv ib leeg yuav tsis muaj cov ncauj lus kom ntxaws ntxaws thiab cov lus qhia ua raws li xav tau. Tej zaum nws yuav yog "daim ntawv pov thawj ntawm kev ua raws" lossis EN 10204 2.2, uas tsis txaus.
Yuav Thov Li Cas ntawm Koj Daim Ntawv Yuav Khoom:
Txhawm rau kom txaus siab rau koj cov neeg siv khoom, suav nrog qhov no ntawm koj qhov kev txiav txim rau lub zeb:
"Cov ntaub ntawv yuav tsum tau muab nrog EN 10204 Hom 3.1 kev tshuaj xyuas daim ntawv pov thawj. Daim ntawv pov thawj yuav tsum muaj tag nrho cov ntaub ntawv pov thawj ntawm cov cua sov. Daim ntawv pov thawj yuav tsum muaj xws li: kub chemistry, mechanical zog (tensile, yield, elongation), solution annealing statement, and compliance to ASTM B335. Individual bar marking with heat number.
Qhov no ua kom koj tau txais cov ntaub ntawv pov thawj uas yuav tsum tau ua kom dhau qhov kev tshuaj ntsuam xyuas kev lag luam thiab muab rau koj cov neeg siv khoom nrog "tag nrho traceability" lawv xav tau.
