Yuav Ua Li Cas Weld Titanium
Hauv kev lag luam hlau, titanium paub txog nws lub zog zoo heev, corrosion kuj thiab lub teeb yuag. Txawm li cas los xij, vuam titanium tsis yog ib txoj haujlwm yooj yim thiab yuav tsum muaj cov cuab yeej tshwj xeeb thiab kev tswj xyuas meej kom ntseeg tau qhov zoo ntawm vuam. Kab lus no yuav qhia txog yuav ua li cas weld titanium kom ntxaws thiab muab qee cov lus qhia thiab cov lus qhia.
I, Kev npaj rau vuam titanium
Ua ntej tshaj plaws, ua ntej vuam titanium, kev npaj yog qhov tseem ceeb tshwj xeeb. Titanium yog rhiab heev rau kev sib kis, yog li qhov chaw vuam yuav tsum huv heev. Tag nrho cov cuab yeej thiab cov cuab yeej siv, nrog rau cov phom vuam, cov khoom siv hluav taws xob thiab cov khoom siv, yuav tsum tau ntxuav kom huv si. Tsis tas li ntawd, titanium nto nyob rau hauv qhov chaw vuam yuav tsum tsis muaj roj, oxide txheej thiab lwm yam impurities.
1. Ntxuav qhov chaw: Siv cov kuab tshuaj tsis muaj roj lossis cov tshuaj ntxuav tshwj xeeb kom huv si ntawm titanium. Siv cov ntawv xuab zeb tsis muaj cov pa roj carbon monoxide lossis cov txhuam hlau tsis huv rau kev tu txhua yam.
2. Tiv thaiv qhov chaw vuam: Thaum lub sij hawm vuam, titanium yuav tsum tau tiv thaiv cov pa oxygen thiab nitrogen hauv huab cua. High-purity argon tuaj yeem siv los tiv thaiv kom ntseeg tau tias qhov chaw vuam yog tag nrho hauv qab argon tiv thaiv txheej.
II, Vuam txoj kev xaiv
Muaj peb txoj hauv kev tseem ceeb rau titanium vuam: roj tungsten arc vuam (TIG), roj hlau arc vuam (MIG) thiab electron beam vuam (EBW). Ntawm lawv, TIG vuam yog txoj kev siv ntau tshaj plaws vim nws tuaj yeem muab cov txiaj ntsig zoo vuam.
1. TIG vuam: vuam yog ua los ntawm tungsten electrode nyob rau hauv ib puag ncig ntawm shielding roj (feem ntau yog argon). TIG vuam yog tsim rau nyias-walled titanium cov ntaub ntawv, nrog zoo vuam zoo, du welds thiab tsis spatter.
2. MIG vuam: haum rau cov ntaub ntawv tuab titanium, siv hlau electrode hlau ua cov khoom muab tub lim. MIG vuam yog ceev, tab sis qhov vuam zoo yog me ntsis qis dua TIG vuam.
3. Electron beam vuam: vuam yog ua los ntawm kev siv lub tshuab hluav taws xob hluav taws xob hauv lub tshuab nqus tsev. Electron beam welding yog tsim rau titanium qhov chaw nrog cov duab nyuaj thiab tsis tshua muaj siab vuam qhov yuav tsum tau ua.
III, Vuam txheej txheem tsis
Thaum lub sij hawm vuam txheej txheem, nws yog ib qho tseem ceeb los tswj cov txheej txheem vuam tsis. Cov tsis muaj xws li vuam tam sim no, voltage, vuam ceev, thiab shielding gas flow rate.
1. Vuam tam sim no: Xaiv qhov tsim nyog vuam tam sim no raws li qhov tuab ntawm cov khoom siv titanium. Feem ntau hais lus, cov ntaub ntawv tuab yuav tsum muaj cov dej ntws ntau dua, thaum cov ntaub ntawv nyias nyias yuav tsum tau qis dua.
2. Vuam ceev: Lub vuam ceev ncaj qha cuam tshuam qhov zoo ntawm vuam thiab vuam deformation. Vuam ceev uas ceev dhau yuav ua rau tsis tiav fusion los yog porosity, thiab vuam ceev uas qeeb dhau yuav ua rau overheating thiab deformation ntawm vuam.
3. Shielding gas flow rate: Tus nqi ntws ntawm argon yuav tsum txaus kom npog qhov chaw vuam kom tsis txhob muaj cov pa oxygen thiab nitrogen hauv huab cua nkag mus rau hauv qhov chaw vuam. Feem ntau pom zoo argon ntws ntawm 15-20 litres/feeb.
IV, Lub tswv yim thiab ceev faj rau vuam titanium
1. Preheating thiab tom qab cua sov: Titanium tsis tas yuav tsum tau preheating ua ntej welding, tab sis nws yuav tsum tau txias maj mam tom qab welding kom txo vuam kev ntxhov siab thiab tiv thaiv cov kab nrib pleb.
2. Fixtures thiab fixtures: Siv cov fixtures tsim nyog los kho titanium qhov chaw kom tsis txhob txav ntawm lub workpiece thaum vuam. Nyob rau tib lub sijhawm, lub fixture yuav tsum tau sim kom tsis txhob muaj kev sib cuag nrog qhov chaw vuam kom tsis txhob muaj kev sib kis.
3. Multi-pass welding: Rau cov phaj tuab titanium cov ntaub ntawv, kev siv vuam ntau dhau tau pom zoo. Tom qab txhua qhov vuam dhau tiav lawm, nws yuav tsum tau muab ntxuav thiab tshuaj xyuas kom ntseeg tau tias tsis muaj qhov tsis xws luag ua ntej mus rau qhov txuas txuas txuas ntxiv.
4. Welding ib puag ncig tswj: Khaws lub vuam ib puag ncig kom qhuav thiab huv si. Tsis txhob welding nyob rau hauv high humidity los yog windy ib puag ncig kom tsis txhob cuam tshuam rau vuam zoo.
Xaus
Vuam titanium yuav tsum tau siv technology meej thiab tswj nruj. Tsuas yog los ntawm kev npaj tag nrho thiab ua tiav txoj kev vuam kom raug tuaj yeem tau txais cov txiaj ntsig zoo vuam zoo. Los ntawm kev taw qhia ntawm kab lus no, kuv ntseeg tias txhua tus neeg muaj kev nkag siab tob txog yuav ua li cas vuam titanium. Kuv vam tias cov lus qhia thiab cov lus qhia no tuaj yeem pab koj nrog koj qhov kev ua haujlwm tiag tiag. Txawm hais tias nyob rau hauv kev tsim khoom lag luam lossis kev siv niaj hnub, txoj kev vuam kom raug yog tus yuam sij kom ntseeg tau qhov zoo thiab ua haujlwm ntawm cov ntaub ntawv titanium.
