Qhov txawv ntawm vuam thiab brazing yog dab tsi?

Vuam, tseem hu ua fusion, yog cov txheej txheem tsim khoom thiab thev naus laus zis uas siv cov cua sov, kub lossis kub siab los koom nrog cov hlau lossis lwm yam khoom siv thermoplastic xws li plastics.

Muaj ntau qhov chaw ntawm lub zog rauniaj hnub vuam, nrog rau cov pa taws, arcs, lasers, electron beams, kev sib txhuam thiab ultrasound. Ntxiv nrog rau kev siv hauv cov chaw tsim khoom, vuam kuj tseem tuaj yeem ua rau ntau qhov chaw, xws li sab nraum zoov, hauv qab dej thiab hauv qhov chaw. Vuam tuaj yeem ua rau muaj kev phom sij rau cov neeg ua haujlwm txhua qhov chaw, yog li kev tiv thaiv tsim nyog yuav tsum tau ua thaum vuam. Muaj kev raug mob rau tib neeg lub cev los ntawm kev sib txuas xws li kub hnyiab, hluav taws xob poob siab, pom kev tsis pom kev, nqus pa ntawm cov pa phem, hluav taws xob ultraviolet ntau dhau, thiab lwm yam.

Vuam ua tiav lub hom phiaj ntawm kev koom nrog peb txoj hauv qab no:

Fusion welding - cua sov lub workpieces yuav tsum tau koom nrog ib nrab yaj lawv los ua ib tug molten pas dej ua ke, uas yog koom tom qab lub molten pas dej ua ke txias thiab solidifies. Yog tias tsim nyog, molten fillers tuaj yeem muab ntxiv los pab. Nws yog tsim rau vuam ntawm ntau yam hlau thiab alloys tsis muaj siab.

Siabvuam- cov txheej txheem vuam yuav tsum siv lub siab rau lub vuam, uas yog cov txheej txheem ntawm ntau yam hlau thiab cov ntaub ntawv hlau ib nrab.

Brazing - Siv cov khoom siv hlau uas muaj qhov qis qis dua li cov khoom siv niam txiv ua cov khoom siv brazing, siv cov khoom siv kua brazing kom ntub cov khoom siv niam txiv, sau qhov sib koom ua ke, thiab diffuse nrog cov khoom niam txiv kom ua tiav qhov kev sib txuas ntawm cov khoom siv welded. . Nws yog tsim rau vuam ntawm ntau yam ntaub ntawv, thiab kuj haum rau vuam ntawm txawv hlau los yog heterogeneous cov ntaub ntawv.

Brazing yog hais txog txoj kev vuam nyob rau hauv qhov sib txawv ntawm cov khoom ua haujlwm tau ntim nrog cov khoom siv ua kua tom qab cov khoom siv brazing thiab cov welment nrog qis melting point tshaj qhov vuam yog rhuab mus rau melting kub ntawm cov khoom siv brazing tib lub sijhawm. Thaum brazing, oxide zaj duab xis thiab roj stains ntawm qhov chaw ntawm cov khoom siv niam txiv yuav tsum tau muab tshem tawm ua ntej, txhawm rau pab txhawb lub capillary los ua lub luag haujlwm tom qab cov khoom siv brazing melts, ua kom cov dej noo thiab cov dej ntws ntawm cov khoom siv brazing. Raws li cov ntsiab lus melting sib txawv ntawm cov khoom siv brazing, brazing yog muab faib ua tawv brazing thiab mos brazing.

Brazing muaj me me deformation thiab du thiab zoo nkauj pob qij txha. Nws yog tsim rau vuam precision, complex thiab Cheebtsam ntawm cov ntaub ntawv sib txawv, xws li honeycomb qauv daim hlau, turbine hniav, carbide cov cuab yeej thiab luam Circuit Court boards. Ua ntej brazing, lub workpiece yuav tsum tau ua tib zoo ua tiav thiab nruj me ntsis ntxuav kom tshem tawm cov roj stains thiab tuab oxide zaj duab xis ntau dhau los xyuas kom meej qhov sib txawv ntawm qhov sib txuas. Qhov sib txawv feem ntau yuav tsum nyob nruab nrab ntawm {{0}}.01 thiab 0.1 hli.

Piv nrog fusion vuam, cov khoom siv niam txiv tsis yaj thaum lub sij hawm brazing, tsuas yog cov khoom siv brazing melts; Piv nrog rau kev siv vuam, tsis muaj lub siab siv rau lub vuam thaum lub sij hawm brazing. Lub weld tsim los ntawm brazing yog hu ua brazing seam. Cov hlau muab tub lim siv rau brazing yog hu ua brazing muab tub lim.

Brazing txheej txheem:Cov workpieces nrog cov chaw ntxuav yog sib sau ua ke nyob rau hauv ib qho kev sib tshooj, thiab lub brazing muab tub lim tau muab tso rau ze lossis nruab nrab ntawm qhov sib koom ua ke. Thaum lub workpiece thiab brazing muab tub lim yog rhuab mus rau ib tug kub me ntsis siab tshaj lub melting point ntawm lub brazing muab tub lim, lub brazing muab tub lim melts (lub workpiece tsis melted), thiab yog nqus nyob rau hauv thiab ntim ntawm cov khoom workpiece khoob los ntawm capillary txiav txim. Cov kua brazing muab tub lim thiab lub workpiece hlau diffuse thiab yaj ib leeg, thiab ib tug brazed sib koom ua ke yog tsim tom qab condensation.

Vuamyog ib txoj kev ntawm kev sib txuas ntawm cov workpieces los ntawm cua sov los yog pressurizing los yog ob qho tib si, nrog los yog tsis muaj cov ntaub ntawv muab tub lim, yog li brazing yog ib qho ntawm txoj kev vuam.

Raws li ib qho ntawm peb txoj kev loj vuam txheej txheem, brazing yog txawv ntawm fusion vuam thiab siab vuam.

Fusion welding yog siv cov khoom siv hluav taws xob sab nraud (xws li arc) kom sov hauv zos thiab yaj thaj tsam ze ntawm qhov sib txuas ntawm cov khoom sib txuas (piv txwv li, cov khoom siv niam txiv), thiab tom qab ntawd txias los ua ib qho kev sib koom ua ke. Thaum lub sij hawm vuam txheej txheem, ob qho tib si niam txiv cov khoom thiab cov muab tub lim hlau yog melted, thiab ob qho tib si tshuaj ua ke. Xws li: phau ntawv arc vuam, CO2 vuam, TIG vuam, MIG vuam, submerged arc vuam, MAG vuam, plasma vuam, laser vuam, electron beam vuam, thiab lwm yam.

Siab vuam yog siv lub siab ua kom lub atomic spacing ntawm welded nto ze rau lub lattice nrug. Tsis siv cov vuam siv thaum vuam, cov hlau yuav tsum tau txuas nrog cov tshuaj lom neeg los yog lub cev sib xyaw ua ke, cov vuam yog nqaim, thiab thaj chaw muaj kev kub ntxhov me me, nrog rau kev siv vuam (qhov chaw vuam, seam vuam), flash vuam, txhuam vuam, txias. Lub siab vuam, thiab lwm yam. Brazing yog ua kom tiav qhov kev sib txuas ntawm cov khoom brazed los ntawm cov hlau molten (cov khoom siv brazing). Qhov kub ntawm cov khoom siv brazing yog qis dua qhov kub ntawm cov khoom siv niam txiv. Thaum lub sij hawm vuam, cov khoom siv brazing melts tab sis cov khoom niam txiv tsis yaj, thiab ob lub cev ua ke. Nws yog kev cai los faib cov brazing thiab soldering ntawm qhov kub ntawm 450 degree. Brazing feem ntau suav nrog nplaim taws, induction brazing, rauv brazing, tiv thaiv brazing, thiab lwm yam.

Peb Cov Khoom

Silver Brazing rauHluav taws xob tiv taujsiv cov khoom siv nyiaj zoo nrog cov khoom siv zoo heev, uas tuaj yeem ua kom muaj txiaj ntsig zoo thiab ruaj khov kis tau tus mob tam sim no thiab txo cov teeb liab poob thiab lub zog poob. Cov txheej txheem zoo ntawm cov nyiaj brazing ua rau kev sib txuas lus ruaj khov thiab txhim khu kev qha, thiab nws tsis yooj yim rau loosen lossis poob tawm thaum siv ntau zaus. Peb cov neeg muaj kev tiv thaiv corrosion zoo heev thiab tuaj yeem tswj xyuas kev ua haujlwm ruaj khov rau lub sijhawm ntev hauv qhov chaw nyuaj, txawm tias nws yog ib puag ncig ntub lossis ib qho chaw uas muaj qee yam tshuaj lom neeg.