Ultrasonic riveting tshuab
Lub hauv paus ntsiab lus ntawm ultrasonic riveting: Ib txoj hauv kev los kho cov ntu thermoplastic rau lwm feem ntawm cov khoom siv sib txawv. Cov rivets lossis thawj coj yuav tsum muaj lub vojvoog loj heev lossis cov pob kws nyob hauv qab kom tiv thaiv kev tawg lossis yaj. Txhawm rau mloog zoo lub zog ultrasonic, saum toj ntawm tus thawj coj yuav tsum tsim los txo qis kev sib txuas ua ntej nrog lub taub hau vuam. Sab saum toj ntawm tus thawj coj tuaj yeem ua ncaj nraim lossis conical, thiab lub semi-crystalline lossis puv polymer yog dua li conical. Lub sam xeeb ntawm ultrasonic riveting nyob ntawm qhov tseeb muaj peev xwm sib raug zoo ntawm rivet thiab lub taub hau vuam.
Txheem lub riveting-tiaj lub taub hau rivets nrog lub taub ntawm 1.6-4.0mm. Cov phom sij zoo thiab yoog raws tsis siv cov thermoplastics yog pom zoo rau cov qauv duab.
Hemispherical riveting-rivets nrog lub cheeb tsawg dua 1.6mm yog pom zoo rau hemispherical riveting. Nws yog haum rau hnav-resistant plastics.
Overflow riveting welding-Overflow riveting vuam siv nyob rau hauv cov ntawv thov uas qhov saum npoo yuav tsum tau ua kom tiaj lossis tsa thiab qhov tuab ntawm qhov xauv tau tso cai.
Hollow riveting-Boss lossis rivets nrog txoj kab uas hla loj dua 4mm tuaj yeem tsim cov dig muag cov thawj coj tom qab cov tub ntxhais raug tshem tawm.
Thaum tsis tau los ntawm lub qhov raug tso cai nyob rau hauv qhov chaw mating, cov khoom siv ultrasonic vuam kuj tuaj yeem tsim kev sib txuas txhua yam. Moulded yas rivets thiab dig muag chamfers nyob rau hauv mating qhov chaw tuaj yeem ua qhov tseeb cov tshuab sib koom ua ke raws li kev sib haum.
Cov yam ntxwv ntawm ultrasonic vuam:
1. Amorphous polymers, tshwj xeeb tshaj yog cov uas tawm ntawm iav ntawm chav tsev, feem ntau yog cov neeg sib tw zoo rau kev ua haujlwm vuam. Lub iav amorphous polymer muaj cov khoom sib kis tau zoo, pub ua tiav vuam nrog ze-teb thiab deb kev teb vuam kev. Thaum cov ntaub ntawv muag, cov vuam ultrasonic ntawm cov khoom qhib-puab ua ib qho teeb meem. Piv txwv li, vuam siab qhov kev cuam tshuam ps feem ntau yuav xav tau ntau lub zog thiab ntxiv ntau dua li vuam dav dav ps.
2. Semi-crystalline polymers feem ntau nyuaj rau weld nrog ultrasonic zog. Ntxiv rau lub zog cov nqi tawm los ntawm kev siv tshuab vuam (uas yog, nce ntxiv); kom luv qhov kev ncua deb ntawm vuam lub taub hau / workpiece hu rau saum npoo thiab qhov sib koom tes; siv ze-teb ultrasonic vuam tshuab; siv lub taub hau vuam nrog qhov dav li ntawm 0.05-0.15mm. Cov txheej txheem vuam siab no yuav tsum tau siv lub taub hau vuam taub hau. Thaum muaj lub zog siab, kev sib koom ua ke yog qhov yuav tsum tau muaj, ob qho tib si ntawm shear pob qij txha thiab nruab nrab kem sib dhos yog qhov haum rau cov nplai crystalline polymers.
3. Vuam hygroscopic polymers: weld qhov chaw tam sim ntawd tom qab molding (thaum lawv tseem qhuav); qhuav cov ntu ua ntej welding; muab cov khoom tso rau hauv desiccator ua ntej vuam.
