Ib tsab xov xwm kom nkag siab txog lub tshuab nqus tsev brazing tshuab thiab daim ntawv thov

1. Introduction

 Txij li thaum xyoo 1940, lub tshuab nqus tsev brazing tau dhau los ua cov cuab yeej siv tau zoo heev. Brazing tooj liab thiab stainless hlau qhov chaw thawj zaug tau tshwm sim hauv kev lag luam hluav taws xob. Tom qab ntawd, nrog kev loj hlob sai ntawm kev lag luam aviation, kev lag luam hluav taws xob, kev lag luam tsheb, kev lag luam oxygen generator thiab foob pob hluav taws thiab missile technology, lub tshuab nqus tsev brazing tshuab kuj tau tsim raws li. Nqus brazing tshuab yog dav siv nyob rau hauv kev tsim ntawm honeycomb sandwich qauv panels, sib dhos ntawm lub dav hlau xyaw thiab foob pob ua ntxaij missile li, hlau lim, waveguides thiab ntau yam radiators.

2. Lub tshuab nqus tsev brazing yog dab tsi

Nqus brazing yog hais txog txheej txheem txheej txheem rau brazing los ntawm kev siv vuam hlau brazing muab tub lim hlau tsis muaj flux nyob rau hauv lub tshuab nqus tsev siab.

txoj haujlwm ua haujlwm:

Lub brazing muab tub lim hlau yog coated rau ntawm qhov chaw ntawm lub tshuab nqus tsev, thiab tom qab ntawd muab tso rau hauv lub tshuab nqus tsev vacuum. Lub tshuab nqus tsev pib ua haujlwm thiab cov pa tawm. Thaum lub tshuab nqus tsev kawm ntawv nce mus txog 10-3Pa lub tshuab nqus tsev, cov cua sov pib, thiab cov cua kub mus txog 10-3Pa. Thaum lub brazing kub yuav tsum tau los ntawm tus txheej txheem, lub brazing muab tub lim hlau pib yaj, thiab cov kua brazing muab tub lim hlau wets lub hauv paus hlau thiab sau qhov sib txawv ntawm cov laum khoom nyob rau hauv capillary kev txiav txim. Nyob rau tib lub sij hawm, cov ntsiab lus solder diffuse mus rau lub hauv paus hlau, thiab lub hauv paus hlau dissolves nyob rau hauv cov kua solder los ua ib tug high-zoo brazing sib koom.

3. Qhov zoo ntawm lub tshuab nqus tsev brazing

• Nyob rau hauv tus txheej txheem ntawm lub tshuab nqus tsev brazing, lub workpiece yuav tsum tau brazed nyob rau hauv lub tshuab nqus tsev tej yam kev mob, thiab yuav tsis muaj oxidation, carbon nce, decarburization thiab muaj kuab paug deterioration. Kev huv huv ntawm cov welded sib koom ua ke yog qhov zoo thiab lub zog yog siab.

• Thaum brazing, lub brazing kub yog qis dua lub melting point ntawm lub hauv paus hlau, uas muaj me ntsis cuam tshuam rau lub hauv paus cov ntaub ntawv, tag nrho ib feem yog rhuab tusyees, thiab thermal stress yog me me, thiab lub deformation yuav tsum tau tswj kom tsawg kawg nkaus, uas yog tshwj xeeb tshaj yog haum rau brazing ntawm precision khoom.

• Lub siab tsis tshua muaj siab (lub tshuab nqus tsev) nyob ib ncig ntawm lub hauv paus hlau thiab cov khoom siv hlau brazing tuaj yeem tshem tawm cov pa roj carbon monoxide thiab impurities tso tawm los ntawm cov hlau ntawm qhov kub thiab txias, thiab tuaj yeem txhim kho kev ua haujlwm ntawm lub hauv paus hlau.

• Cov khoom tsim qauv tau nthuav dav, thiab qhov chaw brazable tau tso cai kom muaj qhov nqaim, cov rooj hloov pauv me me, qhov qhov muag tsis pom, thiab lwm yam. Nws yog qhov tshwj xeeb tshaj yog tsim rau cov khoom uas muaj cov thawv kaw thiab cov duab nyuaj, thiab tuaj yeem brazed nyob rau hauv ntau qhov kev hla. ntawm ib lub sijhawm. Nws muaj kev ua haujlwm siab brazing thiab tsis tas yuav xav txog cov teeb meem ntawm corrosion, tu thiab kev puas tsuaj los ntawm flux, thiab lwm yam.

• Cov txheej txheem kev kho cua sov ntawm cov khoom ua haujlwm tuaj yeem ua tiav tib lub sijhawm thaum lub sijhawm txheej txheem brazing, cov txheej txheem vuam tsim nyog tuaj yeem xaiv tau, thiab cov brazing tuaj yeem npaj tau raws li cov txheej txheem kawg kom tau txais kev sib koom ua ke uas nws ua tau raws li cov qauv tsim.

• Muaj ntau hom hlau uas tuaj yeem ua tau brazed, tshwj xeeb tshaj yog tsim rau txhuas thiab txhuas alloys, titanium thiab titanium alloys, stainless hlau, high-temperature alloys, thiab lwm yam.; kuj haum rau brazing kev sib txuas ntawm titanium, zirconium, niobium, molybdenum, tungsten thiab lwm yam tib yam los yog sib txawv hlau; Kuj tseem haum rau cov ntaub ntawv sib xyaw, ceramics, graphite, iav, pob zeb diamond thiab lwm yam ntaub ntawv.

4.Lub ntsiab daim ntawv thov ntawm lub tshuab nqus tsev brazing tshuab

• Aero cav

Nqus brazing yog dav siv nyob rau hauv honeycomb lug ua sealing Cheebtsam ntawm ntau yam aero-engines. Lub brazing txheej txheem ntawm honeycomb qauv yog preset lub brazing khoom nyob rau hauv lub honeycomb core, ces sib sau ua ke lub honeycomb thiab lub plhaub, thiab thaum kawg txais yuav lub tshuab nqus tsev brazing txoj kev rau brazing, lub zog ntawm lub brazed ob leeg yog hais txog 50% ntawm lub hauv paus khoom. Grouped stator hniav ntawm aero-engine compressors kuj yog tsim los ntawm txoj kev brazing no. Nws muaj cov nplhaib sab hauv thiab sab nrauv thiab ntau tshaj 10 cov hniav txuas nrog lub tshuab nqus tsev brazing. tag nrho.

Tsis tas li ntawd, lub tshuab nqus tsev brazing kuj tseem siv rau hauv kev tsim cov turbine guides, qhia vanes, diffusers, nplaim taws, roj lim thiab lwm yam khoom hauv aero-engines.

• AMB ceramic substrate

Cov txheej txheem AMB (active hlau brazing) yog kev txhim kho ntxiv ntawm DBC txheej txheem thev naus laus zis. Nws siv ib qho me me ntawm cov khoom nquag Ti thiab Zr uas muaj nyob rau hauv cov khoom siv hlau brazing kom hnov ​​​​mob nrog cov ceramic los tsim cov txheej txheem tshuaj tiv thaiv uas tuaj yeem ntub dej los ntawm cov kua brazing muab tub lim hlau. Ib txoj kev koom nrog. Nws tsis tsuas yog muaj cov thermal conductivity ntau dua thiab zoo dua tooj liab txheej kev sib txuas, tab sis kuj muaj qhov zoo ntawm cov thermal tsis kam thiab kev ntseeg siab dua. Nws yog qhov tsim nyog rau kev npaj ntawm ceramic tooj liab-clad substrates rau IGBT module ntim rau hauv tsheb fais fab thiab lub zog locomotives. Tshwj xeeb tshaj yog nyob rau hauv tej yam tseem ceeb xws li cua zog, hnub ci zog, tshav kub twj tso kua mis, hydropower, biomass zog, ntsuab vaj tse, tshiab zog khoom, hluav taws xob tsheb, tsheb ciav hlau, thiab lwm yam. tooj liab clad laminates, cov khoom tseem ceeb rau IGBT module ntim. xav tau.

• Cov cuab yeej pob zeb diamond

Brazed pob zeb diamond cov cuab yeej muab faib ua ob hom: nto inlay thiab impregnation. Cov cuab yeej deg inlay yog ncaj qha braze lub pob zeb diamond rau saum npoo ntawm substrate. Cov cuab yeej impregnated yog cov txheej txheem sintering ntawm sintering pob zeb diamond thiab lwm yam ntaub ntawv rau hauv lub cev pob zeb diamond sib xyaw. Diffusion brazing txheej txheem nrog cov khoom siv hauv paus. Lub brazing ntawm cov cuab yeej pob zeb diamond tau muab faib ua peb pawg: ib txheej pob zeb diamond cuab yeej brazing, pob zeb diamond me ntsis brazing thiab PDC composite brazing, uas tau siv dav hauv ntau lub lag luam xws li cov cuab yeej pob zeb, cov cuab yeej ua haujlwm ntoo, aerospace thiab tub rog kev lag luam.

• Tsheb thiab nkoj

Nqus brazed phaj-fin roj txias yog siv rau hauv tsheb thiab nkoj. Phaj-fin roj txias txias muaj cov yam ntxwv ntawm kev kub siab hloov hluav taws xob, cov qauv compact thiab lub teeb yuag. Nws yog ib qho kev hloov khoom ntawm niaj hnub diesel cav txias thiab tau dav siv hauv tsheb, tsheb laij teb, marine diesel xyaw thiab lwm yam.

• Cov khoom siv sib cais cua

Kev siv lub tshuab nqus tsev vacuum rau lub impeller hauv cov cuab yeej sib cais huab cua zoo heev txhim kho kev tsim khoom ntawm lub impeller nrog nqaim ntws raws, yog li tsis tsuas yog ua kom ntseeg tau cov qauv kev ua tau zoo, tab sis kuj txo cov nqi tsim khoom thiab txo lub voj voog ntau lawm.

5. ACME lub tshuab nqus tsev brazing txheej txheem thiab khoom siv

Tom qab ntau xyoo ntawm txoj kev loj hlob, ACME tuav txoj haujlwm tseem ceeb hauv kev siv lub tshuab nqus tsev vacuum hauv Suav teb thiab txawm nyob hauv lub ntiaj teb. Nws tau tsim ob yam khoom series ntawm lub tshuab nqus tsev brazing thiab nqus diffusion vuam. Tam sim no, ze li ntawm 200 lub tshuab nqus tsev vacuum brazing yog ua haujlwm ntawm cov neeg siv khoom. Cov ntawv thov suav nrog lub tshuab nqus tsev ntawm cov hlau tsis-ferrous, stainless hlau, aluminium alloys, titanium alloys, superalloys, hard alloys, thiab lwm yam, nrog rau lub tshuab nqus tsev brazing ntawm cov ntaub ntawv hlau thiab cov khoom tsis yog xim hlau, xws li lub tshuab nqus tsev brazing ntawm tooj liab thiab ceramics tos. .

• Daim ntawv thov ntawm ACME lub tshuab nqus tsev brazing khoom

Daim duab ntawm daim ntawv thov qhov chaw ntawm lub tuam txhab nyiaj txiag Nyij Pooj, AMB ceramic substrate AGV tsis siv neeg ntau lawm kab txais ACME 12 kab rov tav nqus brazing khoom hauv batch. Cov cuab yeej ua tiav yog ib qho kev txawj ntse tsis muaj neeg siv ntau lawm kab, npog MES ntse tswj system.

Daim duab ntawm lub tsev aero-engine daim ntawv thov chaw, ntsug tshuab nqus tsev brazing khoom, siv rau lub tshuab nqus tsev brazing ntawm honeycomb foob rings, turbine qhia, qhia vanes, diffusers, nplaim taws, roj lim thiab lwm yam khoom.

• Technical zoo ntawm ACME lub tshuab nqus tsev brazing khoom

• ACME muaj cov txuj ci tshaj lij ntawm lub teb chaws tiv thaiv tshwj xeeb vuam kuaj. Nyob rau hauv lub tshav pob ntawm lub tshuab nqus tsev brazing thiab diffusion vuam, cov txheej txheem thiab cov cuab yeej yog nyob rau hauv ib tug ua txoj hauj lwm nyob rau hauv tsev thiab txawv teb chaws, tshwj xeeb tshaj yog kev sib xyaw ntawm cov txheej txheem thiab cov cuab yeej ua rau peb lub tshuab nqus tsev brazing cov cuab yeej siv tau ntau dua.

  

• Txoj siv cua sov siv lub tshuab hluav taws xob rov qab (ACME patent), uas tsis yog tsuas yog ua rau thaj chaw tawg, tab sis kuj txo cov pa phem ntawm cov khoom siv insulating los ntawm cov hlau solder vapor;

• Lub inlet ntawm lub tshuab nqus tsev vacuum yog nruab nrog ib tug roj condensing theem converter thiab ib tug filtering thiab sau cov cuab yeej los tiv thaiv cov pa paug ntawm lub tshuab nqus tsev twj tso kua mis los ntawm cov evaporating roj ntawm cov flux thiab brazing khoom, tshwj xeeb tshaj yog ib tug loj npaum li cas ntawm lipid pa phem yuav generated. Thaum lub sij hawm brazing txheej txheem ntawm AMB ceramic substrate. Txog li 98%, kom ntseeg tau tias lub tshuab nqus tsev thermal yog huv si thiab tsis muaj paug;

• Qhov tshwj xeeb los tiv thaiv kev ua qias tuaj ntawm kev tswj lub tshuab nqus tsev kom lub neej ua haujlwm ntev ntawm kev tswj lub tshuab nqus tsev;

• Lub tshuab cua sov ntawm lub vijtsam hlau txais lub dav-dav molybdenum-lanthanum alloy cua sov txoj siv, thiab cov cua sov siv yog muab nrog ib tug tav zawj, uas muaj ib tug loj hluav taws xob cheeb tsam thiab tsis deformed tom qab siv ntev;

• Lub cub tawg liner yog optimized los ntawm modular tsim, thiab lub cub tawg kub uniformity yog zoo;

• Nruab nrog Ar gas pressurized ceev cua txias system kom ua kom txias txias thiab ua haujlwm tau zoo.