Vim li cas titanium vuam txawv ntawm stainless hlau
Stainless hlau welders feem ntau xav tias titanium yog tib yam. Nws tsis yog.
Titanium yog reactive. Thaum vuam kub, nws absorbs oxygen, nitrogen, thiab hydrogen los ntawm huab cua. Cov welds uas tsis muaj kab mob ua nkig thiab tawg.Stainless hlau tolerates tej huab cua thaum lub sij hawm vuam. Titanium tsis yog.
ASTM B338 GR1 titanium rajyuav tsum muaj kev ceev faj tib yam li lwm cov qib titanium. Tsis muaj shortcuts.
Rau tag nrho technical specifications ntawmASTM B338 GR1 titanium raj, nrog rau cov ntaub ntawv weldability thiab muab tub lim cov lus pom zoo, saib cov khoom nplooj ntawv ntawm no.
Argon shielding xav tau
Qhov chaw vuam yuav tsum raug tiv thaiv los ntawm huab cua kom txog thaum cov hlau txias dua 400℃(750℃F).
Peb cheeb tsam xav tau kev tiv thaiv:
Weld Puddle (pem hauv ntej ntaub thaiv npog)
Sab nraub qaum ntawm weld (rov qab tshem tawm)
Lub tshav kub- cuam tshuam thaj tsam tom qab qhov vuam (trailing shield)
Rau tube welding,100% argon thaub qab yuav tsum tau ntxuav.Tsis muaj kev zam. Kev tshem tawm yuav tsum khiav ua ntej ntaus lub arc thiab txuas ntxiv tom qab lub arc nres kom txog thaum lub raj txias.
Txais tau shielding gases:Ntshiab argon (99.995% yam tsawg kawg nkaus). Argon-helium sib tov tau txais tab sis tsis tsim nyog. Tsis txhob siv argon -CO₂ sib tov. CO₂ contaminates titanium.
Cov cim qhia ntawm kev tiv thaiv tsis txaus:Xiav, straw, los yog grey discoloration ntawm lub vuam los yog cov yeeb nkab uas nyob ib sab. Ib tug zoo shielded weld yog ci nyiaj.
Filler hlau xaiv
Rau pob tw welding ntawmGR1 titanium raj, muab tub lim hlau feem ntau tsis tas yuav tsum tau. Lub weld yog tsim los ntawm fusing lub raj ntug ncaj qha.
Thaum xav tau muab tub lim (rau kev kho lossis tsis sib haum xeeb -up), sivGR1 lossis GR2 titanium muab tub lim. Tsis txhob siv ERTi-5 (6Al-4V) muab tub lim rau GR1 puag hlau. Qhov tsis sib haum xeeb hauv lub zog thiab ductility ua rau muaj teeb meem.
Filler pas nrig yuav tsum tau ntxuav ua ntej siv.So nrog acetone thiab khaws cia rau hauv lub thawv huv. Oily los yog qias neeg muab tub lim contaminates lub weld.
Ntxuav cov kauj ruam ua ntej vuam
Kev kis kab mob yog qhov ua rau ua tsis tiav ntawm titanium welds.
Yuav tsum tau ntxuav cov kauj ruam:
Tshem cov roj, roj, lossis cov ntiv tes nrog acetone lossis isopropyl cawv
Tshem tawm oxide txheej nrog cov hlau tsis huv stainless hlau txhuam (mob rau titanium nkaus xwb - tsis txhob siv cov pa roj carbon steel lossis lwm yam hlau)
So dua nrog cov kuab tshuaj
Weld hauv 4 teev tom qab ntxuav
Tsis txhob siv:Chlorinated cov kuab tshuaj (carbon tetrachloride, trichloroethylene). Cov no tawm cov seem uas ua rau muaj kev ntxhov siab corrosion tawg.
Tsis txhob siv:Abrasive pads los yog lub log uas tau siv rau lwm yam hlau. Embedded hlau hais ua rau galvanic corrosion tom qab.
Feem ntau welding defects
| Tsis zoo | Ua rau | Kev tiv thaiv |
|---|---|---|
| Blue los yog straw discoloration | Tsis txaus argon shielding | Ua kom cov roj ntws, xyuas kom huv, ntxiv cov ntaub thaiv npog |
| Grey weld | Kev kis mob hnyav | Ntxuav lub hauv paus hlau, xyuas cov roj purity, hloov muab tub lim |
| Cracking ntawm weld seam | Hydrogen embrittlement | Tshawb xyuas cov dej noo hauv argon kab, huv si hauv paus hlau |
| Porosity | qias neeg puag hlau los yog muab tub lim | Ntxuav kom huv si, khaws cov muab tub lim kom zoo |
| Undercut | Tshaj tam sim no lossis kev mus ncig ceev | Txo amperage, nce mus ncig ceev |
| fusion tsis tiav | Tsawg tam sim no los yog tsis zoo haum -up | Kho qhov ntsuas, xyuas kom lub raj kawg yog square |
Txhua qhov weld nrog xiav, straw, lossis grey xim yuav tsum tsis lees paub.Sib tsoo cov discoloration tam sim ntawd tsis kho qhov teeb meem. Cov hlau hauv qab no twb embritted.
Weld test xav tau
Rau weldedASTM B338 GR1 titanium raj, tus qauv xav tau:
Eddy tam sim no xeem- 100% ntawm weld seam
Kev ntsuam xyuas- weld seam yuav tsum tsis txhob tawg thaum lub raj yog flattened
Flaring xeem- weld seam yuav tsum tsis txhob tawg thaum lub raj kawg tau nthuav dav
Rau cov ntawv thov tseem ceeb, muaj kev sim ntxiv:
Kev ntsuas hluav taws xob (RT)- kuaj pom qhov tsis xws luag hauv qhov vuam
Kev xeem Penetrant (PT)- pom cov kab nrib pleb
Khoov xeem- lees paub qhov ductility ntawm thaj chaw weld
Cov kev ntsuam xyuas no yuav tsum tau sau rau ntawm daim ntawv pov thawj zeb.Yog tias tus neeg muag khoom tsis tuaj yeem muab cov txiaj ntsig tam sim no rau cov raj welded, cov raj tsis tau raws li ASTM B338.
Lub khw welding vs field welding
Kav vuam(ntawm lub raj zeb zeb) yog automated. Cov kev ntsuas yog tswj. Argon shielding yog zoo ib yam. Qhov zoo yog siab.
Teb welding(thaum lub sij hawm installation los yog kho) yog phau ntawv. Fit- nce yog nyuaj dua. Argon tshem tawm yog qhov nyuaj dua. Kev ua tau zoo nyob ntawm kev txawj welder.
Rau teb welding ntawmGR1 titanium raj, yuav tsum tau ceev faj ntxiv:
Siv lub ntim loj dua argon tshem tawm kom them nyiaj rau cov xau
Siv ib daim ntaub thaiv npog rau ntawm lub teeb
Weld nyob rau hauv tseem huab cua (tsis muaj kiv cua lossis cov ntawv sau)
Kuaj thawj ob peb lub welds thiab txiav lawv rau kev tshuaj xyuas
Ntau cov fabricators yuav tsum tau welder tsim nyog ntawm titanium ua ntej pib ua hauj lwm teb.Ib tug welder uas khiav zoo meej stainless hlau welds yuav poob ntawm titanium.
FAQ
1. GR1 titanium raj puas tuaj yeem welded rau stainless hlau?
Tsis ncaj. Titanium thiab stainless hlau tsim nkig intermetallic compounds. Siv cov kev hloov pauv sib koom ua ke (kev tawg- sib txuas titanium-stainless steel phaj) lossis cov khoom siv sib txuas (flanges, ferrules).
2. Yuav ua li cas yog lub titanium weld tig xiav?
Cov xim xiav txhais tau hais tias muaj pa paug. Lub weld hlau yog embrittled. Nws yuav tawg hauv kev ntxhov siab lossis hauv kev pabcuam.Txiav tawm xiav weld thiab rov-weld nrog kev tiv thaiv kom raug.
3. Tib tungsten electrode puas tuaj yeem siv rau titanium thiab stainless hlau?
Tsis yog. Tungsten tuaj yeem khaws cov hlau los ntawm cov hlau tsis muaj steel thiab hloov mus rau titanium weld. Hlau paug ua rau galvanic corrosion.Dedicate ib txheej ntawm tungsten electrodes rau titanium nkaus xwb.
4. Puas yuav tsum tau preheating rau GR1 titanium vuam?
No. GR1 tsis xav tau preheat. Tshaj dhau preheat (siab dua 150 degree) ua rau muaj kev pheej hmoo kis kab mob vim tias cov hlau kub absorbs oxygen sai dua.
5. Dab tsi yog qhov tsawg kawg nkaus phab ntsa thickness rau welded GR1 raj?
0.5 hli yog qhov ua tau tsawg kawg nkaus rau welded thiab kos cov hlab. Hauv qab no, welding yog qhov nyuaj thiab qhov vuam seam yuav tsis ntseeg. Rau cov phab ntsa nyias, siv seamless.
6. GR1 cov raj puas tuaj yeem welded hauv thaj teb yam tsis muaj kev thim rov qab?
Tsis yog. Qee tus neeg ua haujlwm tau sim hla qhov rov qab tshem tawm ntawm cov raj me me. Lub weld cag oxidizes thiab ua tsis tiav.Rov qab tshem tawm tsis yog xaiv tau.
7. Yuav ua li cas kuaj argon roj purity rau titanium vuam?
Siv lub ntsuas roj purity los yog vuam daim coupon kuaj thiab nrhiav xim. Ib tug silver weld qhia tias ntshiab argon. Xiav lossis straw txhais tau tias muaj kab mob. Qib 5 argon (99.995%) yog qhov tsawg kawg nkaus.
8. GR1 puas tuaj yeem txuas rau GR2?
Yog lawm. GR1 thiab GR2 yog sib xws. Siv GR2 muab tub lim lossis tsis muaj muab tub lim. Lub weld yuav muaj cov khoom ntawm ob qib.
9. Dab tsi yog qhov siab tshaj plaws kev hloov xim rau ASTM B338?
Lub teeb straw xim nyob rau sab nraub qaum ntawm qhov vuam tau tso cai los ntawm qee qhov kev txhais, tab sis feem ntau cov neeg yuav khoom qhiatsis muaj discolorationntawm ob sab. Nyiaj tsuas yog xim xim rau kev pabcuam tseem ceeb.
10. Puas yog vuam txo cov corrosion kuj ntawm GR1?
Tsis yog ua kom raug. Ib tug zoo shielded nyiaj weld muaj tib corrosion kuj zoo li lub hauv paus hlau. Ib qho kab mob xiav lossis grey weld yuav corrode nyiam dua.
Ntim
Anti-Corrosion VCI Ntawv:Muab qhwv ib leeg los tiv thaiv qhov chaw tiav.
Customized EVA Ua npuas ncauj:Rau cov khoom me me thiab cov khoom muaj tseeb, peb siv laser - txiav ua npuas ncauj los tiv thaiv kev txav mus los.
Muab ob npaug rau-Walled Cartons:Tag nrho cov khoom xa tuaj tawm mus rau hauv cov thawv txhawb nqa rau cov khoom thauj hnyav kom ntseeg tau tias koj cov peev nyiaj tuaj txog hauv qhov zoo.
Peb Cov Khoom Siv & Khoom Siv
Peb tsim nyob rau hauv- tsev siv German-engineered CNC tshuab dhos thiab milling chaw. Peb lub Hoobkas pem teb yog nruab nrog:
Nqus Annealing Furnaces:Txhawm rau kom tsis txhob muaj qhov paug paug thaum kho cua sov.
Laser Inspection Systems:Txhua batch yog ntsuas los xyuas kom meej qhov tseeb nyob rau hauv 0.01mm.
Clean Room Assembly:Rau peb cov kev kho mob thiab zaub mov- cov khoom qib, kev sib dhos zaum kawg tshwm sim nyob rau hauv ib puag ncig tswj kom tsis txhob muaj cov kab mob sib kis.
