Ultrasonic Yas Vuam Tshuab
Lub hauv paus ntsiab lus ntawm ultrasonic vuam yog siv cov kev siv tshuab kev co ntawm ultrasonic zaus (Qhov zaus yog 10-70 kHz, qhov nrawm yog 1-250μm) los ua cov khoom yas rau hauv qhov kub hauv zos (Cua sov yog vim muaj kev sib xyaw ua ke ntawm nplaim thiab molecular. kev sib txhuam) thiab yaj lawv, yog li tsim txoj kev kho weld nyob hauv siab.
Cov txheej txheem vuam ultrasonic tau muab faib ua plaub theem.
Theem 1:
Lub taub hau vuam kov rau ntu feem, nias thiab pib ua haujlwm. Kev txhuam kub kub melts lub zog coj ua tav thiab cov kev daws teeb meem mus rau qhov sib txuam. Raws li qhov kev ncua deb ntawm ob ntu tsawg zuj zus, txoj haujlwm vuam (qhov kev ncua deb ntawm ob ntu poob qis vim ntws los ntawm yaj) pib nce. Lub vuam txav chaw nce ntxiv sai sai thaum xub thawj, thiab tom qab ntawd nws qeeb qeeb vim lub zog molten deflector kis tawm thiab kov qhov chaw qis dua. Hauv lub xeev cov txheej txheem txhuam cov theem, cov cua sov yog tsim vim qhov kev sib txhuam ntawm lub zog ntawm ob qhov chaw thiab qhov kev sib txhuam sab hauv ntawm qhov chaw. Kev sib txhuam cua sov ua rau cov khoom siv polymer ua kom sov rau nws qhov chaw melting. Tus nqi calorific nyob ntawm ntau zaus ntawm kev nqis tes ua, qhov dav thiab siab.
Theem 2:
qhov nce ntawm melting nrawm ua rau kev nce ntawm vuam chaw thiab kev sib cuag ntawm cov chaw ntawm ob ntu. Nyob rau theem no, txheej nyias nyias txheej yog tsim, thiab vim yog cov cua kub tas mus li, cov tuab ntawm txheej molten nce ntxiv. Cov kub hauv theem no yog tsim los ntawm khov visipous.
Theem 3:
lub tuab ntawm cov txheej txheem daws teeb meem nyob rau hauv lub weld tseem tsis hloov, thiab nyob rau hauv ib qho kev faib tawm qhov kub thiab txias tas mus li, lub xeev khov kho melting tshwm sim.
Theem 4:
Tom qab ncav lub sijhawm teev tseg lossis kev siv hluav taws xob tshwj xeeb, qib fais fab lossis nrug deb, lub hwj chim txiav tawm, lub ultrasonic kev co nres, thiab theem plaub pib. Tswj lub siab kom nyem tawm ib feem ntawm cov kev daws teeb meem los ntawm daim phiaj tsev. Lub weld ncav nws qhov chaw siab tshaj plaws tom qab txias thiab solidification, thiab intermolecular diffusion tshwm sim.
