C71500 puas tuaj yeem Welded?
Yog lawm,C71500 tooj liab nickel yeeb nkabmuaj zoo weldability.Qhov tseeb, C71500 (70/30) muaj weldability zoo dua C70600 (90/10) vim nws cov ntsiab lus ntau dua nickel. Txawm li cas los xij, cov txheej txheem tsim nyog thiab cov hlau muab tub lim yog xav tau.
| Vuam txoj kev | Haum rau C71500 | Sau ntawv |
|---|---|---|
| TIG (GTAW) | Zoo heev | Txoj kev nyiam rau cov phab ntsa nyias |
| MIG (GMAW) | Zoo heev | Haum rau cov kav dej uas hnyav dua |
| Coated hlau arc (MMA / SMAW) | Zoo heev | Zoo rau kev kho thaj chaw |
| Resistance vuam (qhov chaw, seam) | Zoo heev | Rau daim ntawv thiab lub teeb ntsuas |
| Brazing | Zoo heev | Rau qis-siab, qis-kub pob qij txha |
| Soldering | Zoo heev | Rau qhov tsis yog{0}} kev sib txuas tseem ceeb |
| Oxyacetylene vuam | Zoo | Txais tau tab sis tsis nyiam |
| Carbon arc vuam | Tsis pom zoo | Yuav ua rau carbide nag lossis daus |
Pom zoo Filler Hlau rau C71500
| Filler Hlau | AWS Classification | Zoo tshaj rau | Vim li cas |
|---|---|---|---|
| ERNi-7 | AWS A5.14 | Kev xaiv zoo tshaj plaws rau kev pabcuam dej hiav txwv | Zoo heev corrosion kuj, tawg kuj, ntais ntawv C71500 |
| RNi-7 | – | SMAW (stick electrode) | Field welding, kho kev ua haujlwm |
| ERCuNi | AWS A5.7 | Lub hom phiaj dav dav | Txaus siab rau cov ntawv thov tsis yog - tseem ceeb |
| Nc70/30 | – | Sib phim | Zoo sib xws rau hauv paus hlau |
Rau C71500 yeeb nkab siv hauv seawater lossis marine ib puag ncig,siv ERNi-7 muab tub lim hlau. ERCuNi tuaj yeem ua rau kub tawg nyob rau hauv cov kev txwv nruj.
TIG Welding (GTAW)
TIG vuam yog txoj kev nyiam rau C71500 tooj liab nickel yeeb nkab, tshwj xeeb tshaj yog rau cov phab ntsa nyias (tsawg dua lossis sib npaug li 3 hli phab ntsa tuab).
| Parameter | Pom zoo teeb tsa |
|---|---|
| Polarity | DCEN (Direct Current Electrode Negative) |
| Tungsten electrode | 2% thoriated (liab) lossis 2% lanthanated (xiav), 1.6-2.4mm |
| Tiv thaiv roj | 100% argon (15-20 LPM) |
| Rov qab tshem tawm (hauv cov yeeb nkab) | 100% argon (yuav tsum tau rau hauv paus pass) |
| Filler hlau | ERNi-7 (AWS A5.14) |
| Preheat | Tsis tas yuav tsum tau (chav kub tau txais) |
| Interpass kub | Qhov siab tshaj 150℃(300℃F) |
| Thaum tshav kub kub input | Nruab nrab - tsis txhob overheating |
TIG welding cov kauj ruam:
Ntxuav cov yeeb nkab kawg rau cov hlau ci - tshem tawm tag nrho cov roj, roj, thiab oxide
Bevel the pipe ends for wall thickness >3mm (V-groove, 60-70℃suav nrog lub kaum ntse ntse)
Teeb tsa argon rov qab ntxuav hauv cov yeeb nkab
Tack weld ntawm 3-4 ntsiab lus nyob ib ncig ntawm lub voj voog
Weld cag hla nrog rov qab ntxuav, siv ERNi-7 muab tub lim
Weld filling thiab cap hla tsis rov qab tshem tawm (argon shielding tseem yuav tsum tau)
Cia txias txias - tsis txhob quench
MIG Welding (GMAW)
| Parameter | Pom zoo teeb tsa |
|---|---|
| Polarity | DCEP (Direct Current Electrode Positive) |
| Tiv thaiv roj | 100% argon lossis argon + helium mix |
| Hloov hom | Txau hloov pauv (tsis txhob luv luv Circuit Court) |
| Filler hlau | ERNi-7 (AWS A5.14) |
| Preheat | Tsis xav tau |
| Interpass kub | Qhov siab tshaj 150℃(300℃F) |
SMAW (Welding)
Coated hlau arc vuam yog siv tau rau kev kho teb thiab cov kav dej loj dua qhov twg TIG / MIG tsis ua haujlwm.
| Parameter | Pom zoo teeb tsa |
|---|---|
| Hluav taws xob | RNi-7 los yog ENiCu-7 |
| Polarity | DCEP |
| Preheat | Tsis xav tau |
| Interpass kub | Qhov siab tshaj 150℃(300℃F) |
Brazing thiab Soldering
Rau qhov tsis yog - tseem ceeb, qis - siab, qis - qhov kub thiab txias kev sib txuas, brazing thiab soldering yog cov kev xaiv zoo heev.
| Txoj kev | Filler Khoom | Qhov kub thiab txias | Daim ntawv thov |
|---|---|---|---|
| Brazing | Silver-raws li brazing alloy (BCuP series) | 650-815 degree | Thaum tshav kub kub exchangers, fittings |
| Soldering | Tin- txhuas los yog txhuas - dawb solder | 180-250 degree | Tsawg- cov kab dej siab |
Cov Vuam Tsis Zoo li qub thiab yuav ua li cas zam lawv
| Tsis zoo | Ua rau | Kev tiv thaiv |
|---|---|---|
| Kub tawg | Tsis ncaj ncees lawm muab tub lim hlau (ERCuNi), nruj heev | Siv ERNi-7 muab tub lim, txo kev txwv |
| Porosity | Qhov chaw paug, tsis txaus shielding gas | Ntxuav cov yeeb nkab kom huv si, xyuas argon ntws |
| Tsis muaj fusion | Tsawg cua sov input, tsis ncaj ncees lawm polarity | Ua kom muaj cua sov nkag, txheeb xyuas DCEP rau MIG |
| Oxidation (hauv paus) | Tsis rov qab tshem tawm | Siv 100% argon rov qab ntxuav kom huv hauv paus |
| Undercut | Tshaj tawm cua sov los yog mus ncig ceev | Txo cov cua sov tawm tswv yim, kho qhov nrawm nrawm |
| Embrittlement | Overheating, qeeb txias | Tswj interpass kub, cia qeeb txias |
Ua ntej-Kev Npaj Weld
| Kauj ruam | Kev ua |
|---|---|
| 1. Kev ntxuav | Tshem tawm cov roj, roj, xim, thiab oxides los ntawm qhov chaw vuam (50mm yam tsawg kawg nkaus ntawm kev sib koom ua ke) |
| 2. Degreasing | Siv acetone lossis cawv - tsis txhob siv cov kuab tshuaj chlorinated |
| 3. Beveling | For wall thickness >3mm, tsim V-groove nrog 60-70℃nrog lub kaum sab xis |
| 4. Haum -up | Khaws qhov sib txawv hauv paus (1-2mm raug) |
| 5. Tack vuam | 3-4 tacks tusyees spaced, xyuas kom meej kev sib raug zoo |
| 6. Rov qab tshem tawm teeb | Rau TIG hauv paus hla, kaw yeeb nkab xaus thiab sau nrog 100% argon |
Ncej -Kev kho Weld
| Kev kho mob | Thaum Yuav Tsum Tau | Kev piav qhia |
|---|---|---|
| Kev nyuaj siab nyem annealing | Rau txias khoov C71500 yeeb nkab tom qab khoov | 280-500 degree, tuav 1 teev ib nti tuab |
| Ntxuav | Ib txwm | Tshem tawm slag (SMAW) los yog oxidation (TIG/MIG) |
| Kev tshuaj xyuas qhov muag | Ib txwm | Tshawb xyuas cov kab nrib pleb, porosity, undercut |
| Tsis yog -kev kuaj kev puas tsuaj (NDT) | Thaum tau teev tseg | PT (dye penetrant), RT (radiographic), lossis UT (ultrasonic) |
C71500 vs C70600 Weldability
| Khoom | C71500 (70/30) | C70600 (90/10) |
|---|---|---|
| Weldability | Zoo heev | Zoo heev |
| Pom zoo muab tub lim | ERNi-7 | ERCuNi los yog ERNi-7 |
| Kub cracking nyiam | Lower (Ni cov ntsiab lus siab dua) | Me ntsis siab dua |
| Rov qab tshem tawm yuav tsum tau | Yog (rau root pass) | Yog (rau root pass) |
| Preheat yuav tsum tau | Tsis muaj | Tsis muaj |
| Kev ntxhov siab tom qab vuam | Tsis xav tau | Tsis xav tau |
Daim ntawv thov -Tshwj xeeb Vuam
| Daim ntawv thov | Cov txheej txheem pom zoo | Filler Hlau | Kev txiav txim siab tshwj xeeb |
|---|---|---|---|
| Seawater piping, kev pabcuam | TIG or MIG | ERNi-7 | Rov qab tshem tawm yuav tsum tau rau hauv paus pass |
| Naval / tub rog systems | TIG | ERNi-7 | Yuav tsum tau ua tiav cov txheej txheem weld |
| Thaum tshav kub kub exchanger tubes (thin phab ntsa) | TIG (orbital) | ERNi-7 | Tsis siv neeg vuam, tsis muaj muab tub lim qee zaum |
| Kev kho teb | SMAW (zeeg) | RNi-7 | Khaws cov electrodes kom qhuav |
| High-pressure pipe (>5mm phab ntsa) | MIG (kev hloov pauv) | ERNi-7 | Multi-pass, interpass tu |
| Tsawg-siab, qis-temp | Brazing los yog soldering | BCuP los yog tin - txhuas | Tsis yog rau cov ntawv thov kev ntxhov siab |
FAQ
Q1: Txoj kev vuam zoo tshaj plaws rau C71500 tooj liab nickel yeeb nkab yog dab tsi?
TIG (GTAW) yog txoj kev zoo tshaj plaws rau C71500 yeeb nkab, tshwj xeeb tshaj yog rau phab ntsa tuab txog 3 hli.Rau cov phab ntsa tuab, MIG (GMAW) tshuaj txau kuj zoo heev. Rau kev kho thaj chaw, cov vuam nplaum (SMAW) nrog RNi-7 electrodes yog qhov siv tau. Txhua txoj kev tshwj tsis yog cov pa roj carbon arc vuam tau ntsuas zoo heev lossis zoo rau C71500.
Q2: Dab tsi muab cov hlau uas kuv yuav tsum siv rau vuam C71500 hauv kev pabcuam dej hiav txwv?
Siv ERNi-7 (AWS A5.14) muab cov hlau rau C71500 yeeb nkab hauv seawater lossis marine applications.ERNi-7 muab kev tiv thaiv corrosion zoo heev thiab tawg tsis kam. Tsis txhob siv ERCuNi rau qhov tseem ceeb seawater welds - nws tuaj yeem ua rau kub tawg nyob rau hauv nruj nruj.
Q3: Kuv puas yuav tsum tau preheat C71500 yeeb nkab ua ntej vuam?
Tsis yog, preheat tsis tas yuav tsum tau rau C71500 yeeb nkab.Chav ntsuas kub yog qhov siv tau rau ntau daim ntawv thov. Txawm li cas los xij, khaws qhov kub ntawm qhov sib txawv hauv qab 150℃(300℃F) kom tsis txhob muaj cua sov thiab embrittlement.
Q4: Kuv puas xav tau rov qab tshem tawm (argon hauv cov yeeb nkab) thaum vuam C71500?
Yog lawm, rau TIG vuam ntawm cov hauv paus hla, rov qab ntxuav nrog 100% argon yog xav tau.Yog tsis muaj rov qab ntxuav, sab hauv ntawm lub vuam yuav oxidize, tsim ib tug ntxeem tau, tsis muaj zog hauv paus hlaws. Rau MIG vuam nrog cov phab ntsa tuab, rov qab tshem tawm tsis tas yuav tsum tau sau thiab hla lub hau.
Q5: Kuv puas tuaj yeem txuas C71500 rau stainless hlau lossis carbon hlau?
Yog, tab sis nrog ceev faj.Siv ERNi-7 muab tub lim hlau. Rau vuam rau carbon steel, siv cov nickel-raws li electrode los tswj qhov sib txawv expansion. Rau galvanic corrosion kev txhawj xeeb hauv dej hiav txwv, siv cov flanges insulated es tsis txhob siv vuam ncaj qha thaum ua tau.
Q6: Vim li cas kuv C71500 puas tawg? Dab tsi ua yuam kev?
Feem ntau, koj siv ERCuNi muab cov hlau tsis yog ERNi-7, lossis koj muaj kev txwv ntau dhau.ERCuNi tuaj yeem ua rau kub tawg hauv C71500 nyob rau hauv cov xwm txheej nruj. Kuj xyuas: cov yeeb nkab puas raug ntxuav zoo? Puas yog rov qab tshem tawm siv rau hauv paus hla? Puas yog interpass kub tswj?
Q7: Kuv puas tuaj yeem siv oxyacetylene vuam rau C71500 yeeb nkab?
Oxyacetylene vuam yog ntsuas "Zoo" rau C71500, tab sis nws tsis pom zoo rau kev siv dej hiav txwv tseem ceeb.Nws yog qhov nyuaj dua los tswj cov khoom siv hluav taws xob thiab tsis txhob oxidation. TIG lossis MIG vuam yog nyiam.
Q8: Kuv puas yuav tsum tau ua kom muaj kev ntxhov siab rau anneal C71500 tom qab vuam?
Tsis yog, post-weld stress relief annealing tsis tas yuav tsum tau rau C71500 yeeb nkab.Txawm li cas los xij, yog tias cov yeeb nkab tau txias khoov ua ntej vuam, kev ntxhov siab annealing (280-500 degree) yuav tsum tau ua ua ntej vuam los tiv thaiv qhov seem ntawm kev ntxhov siab tawg.
Q9: Dab tsi yog qhov siab tshaj plaws interpass kub rau vuam C71500?
Qhov siab tshaj plaws interpass kub yog 150℃(300℃F).Tshaj qhov no tuaj yeem ua rau cov qoob loo loj hlob, txo qis corrosion, thiab embrittlement. Cia cov yeeb nkab kom txias ntawm qhov kev hla yog tias xav tau.
Q10: Kuv puas tuaj yeem txuas C71500 rau C70600? Dab tsi yog muab tub lim?
Yog lawm, C71500 thiab C70600 tuaj yeem txuas ua ke.Siv ERNi-7 muab tub lim hlau kom tau txais txiaj ntsig zoo tshaj plaws. Lub weld cheeb tsam yuav muaj cov khoom ntawm ob lub alloys. Rau cov ntawv thov tseem ceeb, tsim nyog cov txheej txheem vuam ua ntej ntau lawm.
