Txhuas Alloy Vuam Txheej Txheem
1 roj vuam ntawm aluminoy alloy
Lub thermal efficiency ntawm oxygen-acetylene roj vuam yog tsis muaj thaum lub tshuab hluav taws kub tsis xav tau thaum aluminium alloys, thiab cov seem yuav tsum tau muab tshem tawm tom qab vuam. Cov sib koom ua ke thiab kev ua tau zoo tsis yog siab. Vim tias cov khoom siv vuam roj yog yooj yim, tsis tas yuav tsum muaj lub zog, xws li kev kho kom zoo, xws li ua haujlwm nyias nyias thiab cov khoom siv yuag, cov khoom sib xyaw thiab cov khoom siv txhuas.
(1) roj av tshuab vuam sib txuas ua ke thaum cov roj av sib tw ua ke Alloys, ncej puab pob qij txha thiab T-pob qij txha yuav tsum tsis txhob siv. Hom kev sib koom ua ke no yog qhov nyuaj los ntxuav cov ntawv sau flux thiab vuam slag uas ntws mus rau qhov sib txawv. Cov pob tw taub hau yuav tsum tau siv kom ntau li ntau tau. Txhawm rau kom ntseeg tau tias cov weldment yog weldrment yog welded los ntawm yam tsis muaj kev sib tsoo lossis hlawv-los, ib tug grooved ncoo yuav siv tau. Cov ncoo feem ntau yog ua los ntawm cov hlau tsis xeb lossis tooj liab. Vuam nrog lub ncoo tuaj yeem tau txais kev rov qab zoo thiab txhim kho kev lag luam vuam.
(2) Xaiv Flux rau roj vuam thaum roj av ua kom zoo nkauj, kom pom tau zoo ntawm Weld, Flux yog xav tau tshem tawm cov yeeb yaj kiab oxide thiab lwm yam impurities ntawm txhuas nto.
Roj vuam flux (tseem hu ua roj flux) yog flux rau roj vuam. Nws lub ntsiab muaj nuj nqi yog kom tshem tawm cov yeeb yaj kiab oxide ua rau ntawm cov khoom siv aluminium thaum muaj roj av vuam, thiab txhawb nqa qhov tau txais cov qauv siv tuab Weld. Roj Vuam ntawm txhuas alloys yuav tsum siv flux. Feem ntau, flux yog ncaj qha rau ntawm qhov zawj ntawm workpiece yuav tsum welded ua ntej vuam hlau thiab ntxiv rau hauv pas dej molten.
Aluminium alloy flux yog chloride ntsev ntawm cov ntsiab xws li potassium, ntsev, calcium, thiab cov kua qaub. Nws yog cov hmoov nplej uas yog crushed, sieved, thiab npaj nyob rau hauv ib qho kev faib ua feem. Piv txwv li, txhuas cryolite (na3alf6) tuaj yeem ua rau aluminium oxide ntawm 1000 degree, thiab poov tshuaj chloride tuaj yeem hloov refractory aluminium oxide rau hauv fusible aluminium chloride. Flux no muaj qhov tsawg me me me me thiab zoo. Nws tseem tuaj yeem txhim kho cov dej ntawm cov hlau molten thiab ua kom cov weld zoo tsim.
(3) Xaiv ntawm Welding Nozzle thiab Nplaim Txhuas Alloy muaj cov khoom siv oxidizing thiab roj oxidast thiab roj av. Nyob rau hauv cov roj vuam, txhawm rau tiv thaiv txhuas los ntawm cov nplaim hluav taws xob, cov nplaim hluav taws xob tsis muaj zog los yog lub cev muaj zog los tiv thaiv oxidation ntawm oxidation uas muaj kev tiv thaiv kev tiv thaiv. Nws yog nruj me ntsis txwv tsis pub siv cov nplaim oxidizing, vim tias kev siv cov nplaim taws oxidizing muaj zog heev, zom zaws cov vuam txheej txheem; Thiab yog tias muaj ntau acetylene, free hydrogen yuav yaj mus rau hauv lub pas dej molten, uas yuav ua rau poles thiab ua kom muaj weld xoob.
(4) Qhov chaw muab kev pab kom tiv thaiv qhov loj me thiab txheeb ze ntawm kev siv fais fab ntawm kev hloov pauv, chaw welding yuav tsum ua ntej vuam. Txij li txhuas muaj qhov loj tshaj tawm cov coefficient, ceev thermal conductivity, thiab ib qho chaw hluav taws xob kub rau cov roj vuam, thiab cov chaw tso hluav taws xob weld yuav tsum tau denser dua li ntawm cov hlau.
Tus muab cov xaim xaim siv rau txoj kev ua kom muaj qhov chaw vuam yog tib yam li uas siv rau cov khoom vuam. Ua ntej tso cov vuam vuam, ib txheej ntawm cov roj glux yuav tsum tau siv rau weld sib. Cov nplaim hluav taws xob ntawm txoj kev muab vuam vuam yog me ntsis loj dua li cov roj vuam.
(5) Roj Vuam kev lag luam thaum vuam hlau, cov cua sov yuav raug txiav txim los ntawm cov xim hloov ntawm cov hlau. Txawm li cas los xij, qhov mob no tsis muaj nyob thaum vuam aluminium. Vim tias tsis muaj qhov pom tseeb xim hloov nyob rau hauv cov txheej txheem ntawm cov cua sov aluminium alminoy los ntawm chav kub los ntawm tus neeg teb xov tooj kom tswj tau qhov kev kub siab. Txawm li cas los xij, lub sij hawm ntawm vuam vuam tuaj yeem nkag tau raws li cov ntawv tshaj tawm hauv qab no:
1) Thaum lub saum npoo ntawm cov kev hloov pauv rhuab los ntawm qub dawb kom diam phib tawj-dawb, thiab cov hlau ntawm qhov kub yaj tau hais txog thiab vuam tau ua;
2) Thaum lub vuam hlau xaus dhuav nyob rau hauv flux thiab ib feem kub tau fuse nrog cov khoom siv hauv paus, qhov kub me tau mus txog thiab vuam yuav ua tau;
3) Thaum lub ntug ntawm cov hauv paus khoom siv poob qis, cov khoom siv hauv paus mus txog qhov kub thiab txias thiab kub thiab txias.
Txoj kev vuam sab laug yuav siv tau rau roj av vuam ntawm daim hlau nyias. Lub vuam hlau nyob rau hauv pem hauv ntej ntawm lub warding nplaim taws. Nyob rau hauv no vuam txoj kev, vim hais tias cov nplaim taws taw rau cov hlau txias uas tsis tau muaj txiaj ntsig los tiv thaiv kev kub ntxhov, uas muaj kev loj hlob ntawm cov hlau sib tsoo, thiab hlawv-los ntawm. Yog tias cov ntaub ntawv hluav taws xob ua tuab loj dua 5 hli, txoj kev vuam vuam yuav siv tau. Hauv hom no, lub vuam hlau yog tom qab lub teeb veel av, thiab cov nplaim nplaim rau hauv Weld. Lub tshav kub tsis yog me me, lub tob yaj yog loj, thiab kev kub nyhav npaum li cas yog siab.
Thaum roj av vuam nyias qhov chaw nrog lub thickness ntawm tsawg dua 3 hli, qhov vuam taws teeb kaum yog {{1} degree; Thaum roj av vuam tuab qhov chaw, lub vuam teeb lub kaum sab xis yog {}} degree, thiab lub kaum dav hlau yog {}}} degree. Thaum roj vuam aluminium alloys, kev sib koom tes yuav tsum tau welded ib zaug li ntau tau ntau li ntau tau yam tsis tau tso cov txheej thib ob, vim tias kev tso cov txheej txheej thib ob yuav ua rau slag incusion hauv Weld.
