Vuam Hlau Cia Thiab Kev Ua Si
Raws li lub ntiaj teb tsim kev lag luam hloov mus rau qhov siab thiab siab muaj kev pab, vuam hlau, ntsib kev cuam tshuam vuam, ntsib kev ua haujlwm ntawm Weld kev ua haujlwm thiab cov khoom lag luam nqa nyiaj. Txawm hais tias alloL cov txheej txheem hauv aerospace lossis siab {1 ox {1 ox mechanical strength ox mechanical, los yog ua rau muaj kev puas tsuaj, thiab txawm tias ua tsis tiav ntawm tag nrho cov qauv welded.
Kev tswj hwm ib puag ncig
Vaub hlau cia yuav tsum nruj me ntsis raws li peb qhov kev xav tau ntawm qhov kub tsawg, thiab tsis muaj roj av tiv thaiv kom tiv thaiv cov khoom muaj kev mob ntshav:
Tswj kub:
General - Lub Hom Phiaj Vuam Hlau (xws li Hlau Hlau (xws li Hlau Thiab Stainless Hlau): Lub Chaw Cia Khoom Yuav Tsum Tau Tswj Nruab Nrab ntawm 5-35 Degree. Qhov kub tshaj tshaj 40℃yuav ua rau cov roj nplua nyeem ntawm cov xaim hluav taws xob kom yaj, ua rau hauv cov hlau tsis zoo. Qhov kub thiab txias hauv qab no 0 Qib yuav ua rau cov roj nplua nyeem kom ruaj khov, ua rau cov hlau hlau.
Cov hlau tshwj xeeb hlau (xws li txhuas thiab titanium): Yuav tsum khaws cia kub ntawm 10-25 degree. Noj ER4043 Aluminium Vuam Hlau ua piv txwv, yog tias qhov kub hloov kho ntawm cov kab hlau ua kom ntev dua ± 5 degree, ua rau muaj 20% txo hauv vuam arc stability.
International Standard Siv: AWS A5.20 teev A5.20 cov lus qhia nyob rau hauv cov chaw khaws cia rau kev sib txuas lus ntawm kev ntxhov siab ntawm thermal hauv cov khoom siv.
Vaum tswj:
Kev Xav Yuav Tsum: Cov feem ntawm cov av noo yuav tsum tsawg dua lossis sib npaug rau 60%. Thaum cov av noo siab tshaj 70%, cov xaim hlau saum npoo av yooj yim, uas decomposes rau hauv hydrogen thiab oxygen rau ntawm lub siab vuam kub, ua rau muaj kev sib tw weld. Piv txwv li, tom qab cov roj hlau vuam hlau yog khaws cia hauv ib puag ncig nrog 24 teev rau 24 teev ntawm Weld Porost tuaj yeem nce 0.5% mus rau 3%.
Cov xwm txheej tshwj xeeb: rau qis - hydrogen welding hlau (xws li e70), thiab ib puag ncig yuav tsum tau khaws cia siv cov sillica gel desiccant lossis dehumidifier.
Kev rho nyiaj roj:
Kev tiv thaiv oxidation: txhuas thiab titanium vuam hlau yuav tsum tau muab cia rau hauv cov nitrogen lossis argon chaw nrog cov ntsiab lus oxygen tsawg dua los yog sib npaug rau 0.01%. Piv txwv li, 5N qib siab siab - Kev ua yeeb yaj kiab txuas ntxiv ntawm cov xim oxide ntawm 3 lub hlis mus rau 12 hlis.
Corrosion Kev Tiv Thaiv: Vuam hlau siv hauv kev lag luam tshuaj yuav tsum tau muab cia kom deb ntawm cov roj corrosive xws li chloride ions thiab sulfides. Ib puag ncig khaws cia 0.1 mg / mp / mg ntawm clr
Kev tswj ntim ntim
Vaub hlau ntim yuav tsum muaj kev tiv thaiv lub cev nrog cov ntaub ntawv tracability kom ntseeg tau tias cov khoom tsis raug puas thaum lub sijhawm kev thauj mus los thiab chaw cia khoom:
Saws Tshuab:
Lub nqus ntim ntim: tsim nyog rau cov khoom yooj yim oxidizable cov khoom xws li txhuas thiab titanium vuam hlau. Los ntawm kev txo lub nqus tsev kom tsawg dua lossis sib npaug rau 1 kPA, cov tshuaj tiv thaiv oxidation yuav raug txhawb nqa. Piv txwv li, txoj kev loj hlob ntawm cov oxide zaj duab xis tuab ntawm lub tshuab nqus hlau tuaj yeem txo mus rau 0.2 μm / hnub (piv rau 0.1 μm / hnub rau kev tso pa). Hloov cov cua tshuab hluav taws xob: ib 95% ar+ 5 ₂ sib tov yog sau rau hauv lub ntim kom tsim cov txheej txheem tiv thaiv. Rau flux - cored vuam hlau tuaj yeem txo cov flux noo noo noo noo noo noo noo noo noo noo noo noo noo noo noo ntawm 0.5% / hli mus 0.1% / hli.
Tsim Qauv:
Reeled vuam hlau: Siv high - Lub zog siv cov khoom siv ntau dua lossis muaj kev sib npaug nrog 20 kj / m². Siv cov ntawv sau ua haujlwm qis dua tuaj yeem ua rau cov hlau deformation thaum lub sij hawm thauj mus los, ua rau cov kav hlau tsis zoo.
Ncaj vuam hlau: Siv npuas dej lossis npuas qhwv kom nqus lub zog. Piv txwv li, ntxiv 5 hli tuab ua npuas npuas txheej thaum lub tshuab thauj pa hluav taws tuaj yeem txo cov hlau tawg rog ntawm 3% mus rau 0.2%.
Kev tshawb xyuas tsis tu ncua thiab kev sib hloov
Lub txee lub neej ntawm vuam hlau feem ntau yog 1 {- 2 xyoo (kev lag luam rau cov khoom lag luam tshwj xeeb). Tom qab lub sijhawm no, nws cov neeg kho tshuab thiab ua cov khoom tuaj yeem ua rau tsis ncaj. Cov tuam txhab yuav tsum tsim cov hlau vuam cov khoom lag luam cov cuab yeej siv hlau thiab hnub ua ntej, thiab hnub ua ntej lossis rov tshawb xyuas vuam hlau ze nws hnub tas sij hawm. Nyob rau tib lub sijhawm, zam kev yuav khoom loj ib zaug los txo cov kev pheej hmoo ntawm cov khoom muag kev ua tau zoo.
Vuam hlau cia yog li tsuas yog "cia"; Nws cuam tshuam nrog kev tswj hwm zoo thoob plaws hauv cov khoom siv tau ua haujlwm. Los ntawm qhov kub {- tswj cov tsev rau khoom hauv chaw tsim khoom ntawm lub tshuab tso rau weld kev ntseeg tau thiab muaj kev nyab xeeb.
