Txoj Kev Brazing Zoo Tshaj Plaws Rau Cov Khoom Zoo Gr1 Titanium

High Quality Gr1 titanium thiab hlau, txhuas, vanadium, molybdenum thiab lwm yam hlau ntsiab los tsim alloys nrog siab zog, siab kub tsis kam, zoo corrosion kuj thiab lwm yam zoo heev lub cev thiab mechanical zog, yog dav siv nyob rau hauv cov tshuaj kev lag luam, marine engineering, tsheb thauj mus los. , kev kho mob, kev tsim kho, nrog rau aerospace, tub rog thiab lwm yam khoom siv high-tech, yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob, uas cov kev lag luam aerospace yog ib qho tseem ceeb hauv cov ntawv thov hauv qab no.

Titanium thiab titanium alloy rau cov hlau ua haujlwm, hauv kev lag luam aerospace, petrochemical thiab atomic zog kev lag luam tau siv dav, titanium thiab titanium alloy brazing hauv cov teeb meem tseem ceeb hauv cov hauv qab no:
① qhov ruaj khov ntawm qhov chaw ntawm oxide zaj duab xis, titanium thiab nws cov alloys thiab oxygen affinity, qhov saum npoo yog yooj yim los tsim ib txheej ntawm oxide zaj duab xis ruaj khov, yog li thaiv cov khoom siv brazing wetting thiab kis, yog li brazing yuav tsum tau muab tshem tawm.
② muaj lub siab nyiam nqus, titanium thiab nws cov alloys nyob rau hauv cov txheej txheem cua sov ntawm hydrogen, oxygen thiab nitrogen muaj ib tug nyiam nqus, thiab qhov kub thiab txias, qhov hnyav dua qhov nqus, yog li ntawd lub plasticity thiab toughness ntawm titanium hlau. yog sharply txo, yog li brazing yuav tsum tau nqa tawm nyob rau hauv lub tshuab nqus tsev los yog inert cua.
③ yooj yim los tsim cov sib txuas sib txuas, titanium thiab nws cov alloys tuaj yeem raug tshuaj lom neeg nrog rau feem ntau ntawm cov khoom siv, tsim cov khoom sib txuas, ua rau cov pob qij txha ua nkig. Yog li, cov khoom siv brazing siv rau brazing lwm cov ntaub ntawv yog qhov yooj yim tsis haum rau brazing active hlau.
④ Lub koom haum thiab cov khoom yog hloov tau yooj yim. Titanium thiab nws cov alloys nyob rau hauv cov cua kub yuav tshwm sim theem hloov thiab grain coarsening, qhov siab dua qhov kub thiab txias ntau coarsening, yog li qhov kub ntawm kub brazing yuav tsum tsis txhob siab dhau.
Nyob rau hauv luv luv, brazing titanium thiab nws cov alloys yuav tsum tau them sai sai rau lub brazing cua kub kub. Feem ntau hais lus, brazing kub yuav tsum tsis txhob ntau tshaj 950 ~ 1000 degree, qhov qis brazing kub, qhov cuam tshuam rau kev ua tau zoo ntawm cov khoom siv hauv paus. Rau quenched aging alloy, kuj tuaj yeem raug brazed nyob rau hauv qhov xwm txheej tsis tshaj qhov kev laus kub.
Txhawm rau tiv thaiv oxidation ntawm brazed pob qij txha thiab oxygen nqus, hydrogen absorption cov tshuaj tiv thaiv, titanium thiab titanium alloy brazing yog nqa tawm hauv lub tshuab nqus tsev thiab lub siab lub ntsws, feem ntau tsis txhob siv cov nplaim taws. Hauv lub tshuab nqus tsev lossis cov tshuaj chlorine brazing, koj tuaj yeem siv cov cua kub ntau zaus, cov cua sov hauv lub tshuab cua sov thiab lwm txoj hauv kev, cov cua sov yog ceev ceev thaum tshav kub kub preservation lub sij hawm luv luv, lub interface cheeb tsam ntawm lub compound yog thinner, kev sib koom ua tau zoo dua. Yog li ntawd, nws yog ib qho tsim nyog los tswj lub koob vuam qhov kub thiab txias lub sij hawm, kom cov khoom siv brazing tuaj yeem ntws tag nrho qhov sib txawv.
Yog vim li cas vim li cas titanium thiab titanium alloy yog qhov zoo tshaj plaws nyob rau hauv lub tshuab nqus tsev thiab argon brazing, vim hais tias nyob rau hauv lub tshuab nqus tsev brazing, txawm hais tias lub affinity ntawm titanium rau oxygen yog loj heev, tab sis titanium nyob rau hauv lub nqus tsev vacuum ntawm 13.3Pa yuav tau txais ib tug du nto, uas. yog vim qhov saum npoo ntawm oxide zaj duab xis tuaj yeem yaj hauv titanium.
Brazing nyob rau hauv kev tiv thaiv ntawm argon, brazing kub ntau yam ntawm 760 ~ 927 degree, thiaj li yuav tiv thaiv titanium discoloration, qhov yuav tsum tau ntawm siab purity argon, feem ntau siv cov kua argon nyob rau hauv lub tub yees cia ntim vim nws muaj purity siab heev.
Brazing ntawm titanium thiab titanium alloys, feem ntau nyob rau hauv lub interface los yog brazing seam nyob rau hauv tsim ntawm brittle compounds, txo cov kev ua tau zoo ntawm brazed pob qij txha. Vim li no, diffusion vuam tuaj yeem siv los txhim kho kev ua haujlwm ntawm cov pob qij txha. Brazing, nyob rau hauv titanium alloy tau muab tso rau ntawm 50μm tuab tooj liab ntawv nyiaj, npib tsib xee ntawv ci los yog nyiaj ntawv ci, cia siab rau titanium thiab cov hlau tiv thaiv cov tshuaj tiv thaiv, ntsig txog, tsim ntawm Cu-Ti, Ni-Ti thiab Ag-Ti eutectic. Tom qab ntawd cov brittle intermetallic compounds diffusion tawm, ntawm ib qho kub thiab ib lub sij hawm nyob rau hauv diffusion brazing pob qij txha muaj kev ua tau zoo heev.
Tsis tas li ntawd, a + B theem titanium alloys tuaj yeem siv rau hauv cov txheej txheem annealed, tshuaj kho lossis laus lub xeev. Yog hais tias lub brazing yuav tsum tau tom qab annealing, muaj peb txoj kev xaiv: tom qab annealing nyob rau hauv annealing kub los yog hauv qab lub annealing kub brazing; nyob rau hauv lub annealing kub saum lub kub brazing, thiab nyob rau hauv lub brazing voj voog coj ib feem ntawm cov txheej txheem txias, thiaj li yuav tau txais lub koom haum annealed; nyob rau hauv annealing kub tshaj qhov kub thiab txias brazing, thiab ces annealing kev kho mob.