Vuam yuav tsum tau thiab ceev faj rau titanium alloy kav
(1) Teeb tsa kev cob qhia vuam tshwj xeeb kom deb li deb tau. Kev haus luam yeeb yog txwv tsis pub nyob hauv chav. Ib puag ncig yog huv si thiab qhuav thiab convection ntawm huab cua yog nruj me ntsis tswj.
(2) Welders hnav khaub ncaws ua hauj lwm huv si thiab degreasing hnab looj tes thaum vuam. Tsis txhob siv tes kov ntawm qhov chaw yog nruj me ntsis txwv.
(3) Degrease qhov chaw vuam thiab hlau nto nrog acetone.
(4) Tiv thaiv argon nrog siab purity, purity tsis tsawg dua 99.99 feem pua. Cov pa roj thaum lub sij hawm vuam yuav tsum tiv thaiv lub hauv ntej thiab nraub qaum ntawm cov hlaws raws li qhov tseem ceeb hauv cov txheej txheem kev cai.
(5) Thaum lub sij hawm vuam txheej txheem, argon ntws tus nqi ntawm cov roj argon thiab cov vuam cuab yeej nozzle nyob rau hauv cov titanium alloy kav yuav tsum tau khaws cia tas mus li kom tsis txhob muaj convexity thiab concavity ntawm weld pas dej ua ke nyob rau hauv cov yeeb nkab.
(6) Qhov luv luv arc vuam nrog me me vuam kab yuav tsum tau siv thaum vuam.
(7) Thaum qhov chaw vuam lub pob tw, qhov kev tshem tawm tsawg dua 30 feem pua ntawm phab ntsa thickness. Txhua qhov vuam yuav tsum tau welded ib zaug li sai tau.
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(8) Thaum vuam, cov cuab yeej vuam yuav tsum tsis txhob viav vias ntawm sab laug mus rau sab xis thiab qhov kawg ntawm cov hlau vuam yuav tsum tsis txhob txav tawm ntawm qhov chaw tiv thaiv roj. Gas yuav tsum tau muab rau 10-15s ua ntej thaum arc tawm tsam. Cov phom vuam tsis tuaj yeem nqa tam sim ntawd thaum muaj kev cuam tshuam arc. Cov pa roj yuav tsum tau ncua sijhawm rau 15-30s kom txog thaum qhov kub poob qis dua 250 C.
Titanium alloy yeeb nkab vuam txheej txheem
1) Ntxuav ua ntej vuam
Lub cim ntawm vuam tsis xws luag yog ze ze rau qhov huv si ntawm qhov chaw vuam thiab cov xov hlau. Roj, dej, oxide zaj duab xis, thiab lwm yam av ntawm ntug ntawm cov yeeb nkab sib koom ua ke nyob rau hauv 15-20 hli thiab qhov chaw ntawm vuam hlau yuav tsum tau ntxuav ua ntej vuam. Cov kev tu huv muaj xws li tshuaj (pickling) lossis mechanical (stainless steel txhuam) tshem tawm cov nplais saum npoo. Acetone lossis cawv yuav tsum tau siv los so cov welds ua ntej vuam. Cov welds huv yuav tsum tau welded tsis pub dhau 24 teev, txwv tsis pub lawv yuav tsum tau muab ntxuav dua. Nws yog qhov zoo tshaj rau dehydrogenate lub vuam hlau tom qab pickling thiab degrease nws nrog acetone ua ntej vuam.
2) Kev tiv thaiv roj. Txhawm rau tiv thaiv kev sib koom ua ke los ntawm kev sib kis los ntawm cov pa phem thiab cov ntsiab lus ntawm qhov kub thiab txias thaum lub sij hawm vuam, qhov tsim nyog argon tiv thaiv yuav tsum tau ua rau lub vuam nrog purity ntawm 99.99 feem pua.
3) Kev xaiv cov txheej txheem vuam tsis.
(1) Kev xaiv vuam hlau. Lub hom ntawm muab tub lim yuav tsum tau xaiv raws li lub hauv paus hlau. Feem ntau, lub hauv paus ntsiab lus ntawm homogeneity nrog lub hauv paus hlau yog saws. Qee lub sij hawm, txhawm rau txhim kho cov yas ntawm qhov sib koom ua ke, cov vuam hlau nrog qis qis qis dua cov hlau hauv paus tuaj yeem xaiv tau.
(2) Xaiv cov khoom siv hluav taws xob thiab polarity. Phau ntawv argon-tungsten arc fais fab mov feem ntau yog siv rau titanium thiab titanium alloy vuam, thiab ib tug ncaj tam sim no siv rau polarity kev twb kev txuas.
(3) Kev xaiv ntawm tungsten electrode. Txoj kab uas hla ntawm tungsten electrode yuav tsum raug xaiv raws li phab ntsa tuab ntawm titanium alloy yeeb nkab, feem ntau ntawm 1. ~ 45 degree.
(4) Kev xaiv ntawm vuam tam sim no thiab lwm yam tsis.
