Yuav ua li cas mus xaiv cov kua nplaum rau yas

Hom ntawm yas no thiaj li muaj ntau yam, tab sis tag nrho lawv poob mus rau hauv ob pawg: thermoplastics thiab thermosets.

Yog li ntawd, rau high-zoo kho ntawm yas khoom yuav tsum tau paub dab tsi hom yas lawv ua, nws yuav pab tau los mus txiav txim yog dab tsi kua nplaum rau muab cov hnab yas ntawm ib tug tej pab pawg neeg. Txawm nyob rau hauv no seemingly uncomplicated yeej muaj lawv tricks. Piv txwv li, yas cov khoom ua si yuav kho siv ib tug pa soldering hlau, tab sis rau karbalitovoy ashtray zoo siv cov nplaum rau cov yas hom BF-2. Kuv qhia rau xav txog ob pab pawg ntau, nyob rau hauv thiaj li yuav to taub tag nrho cov subtleties ntawm tsevneeg puas qhov chaw.

Kho thiab gluing ntawm thermosets

Khoom ntawm no hom ntawm yas yuav tsis muag, yaj thiab re-daim ntawv no, thiab yog hais tias tus tshaj plaws lawm, nws ua tau tsuas yog cov kua nplaum. From xws li yas ua cov tais diav, naj hoom rhawv zeb, cov nyees khawm, tus neeg mob rau cov xov tooj thiab cov koob yees duab, nyob thiab plugs. Tag nrho cov ntawm cov khoom no yuav yooj yim tawg los yog keej mus rau ib tug lub caij nplooj zeeg, thiab lawv yuav tsum tau kho cov nplaum rau cov yas hom BF-2 thiab BF-4, raws li zoo raws li nitrocellulose, polyvinyl tshuaj dawb thiab polyvinyl acetate adhesives.

Bonding yog nqa tawm nyob rau hauv ob peb theem:

1. Puas yog ua tib zoo ntxuav los ntawm hmoov av thiab av, thiab nco ntsoov degrease. Rau lub hom phiaj no lub siab tawg tag cov ntsiab lus zoo yaug nrog dej kub thiab xab npum.
2. Thaum ua tib zoo qhuav los ntawm cov kua nplaum thov mus rau qhov chaw ib tug nyias txheej thiab qhuav nws ces nws yuav tsis lo rau tus ntiv tes.
3. Qhov thib ob nplaum txheej kuj yog muaj ntaub ntawv rau ob qho tib si chaw thiab tso cai rau sawv ntsug rau 1-2 feeb, tom qab uas lub chaw ua ke thiab muab tso rau hauv xovxwm.
4. Lub qhuav txheej txheem kav 3-4 hnub.

Kho thiab tsevneeg ntawm thermoplastics

Yas pab pawg neeg thermoplastics yooj yim softened los ntawm high kub thiab tau ntsib nyob rau hauv qhov kev txiav txim ntawm tej yam kuab tshuaj. Qhov no yas yog siv nyob rau hauv qhov siv thiab ua ntawv sau cwjmem, xab npum ntxuav tais diav, zuag ntsis plaub hau, spectacle ntas thiab cov me nyuam cov khoom ua si. Yav tas, cov khoom tau ua los ntawm combustible yas celluloid, tab sis tam sim no nws yog nce los hloov uas tsis yog-flammable cellulose acetate. Thiab nws thiab lwm yam yas soluble nyob rau hauv acetone. Adhesive ntawm no hom yuav tsum ua los ntawm yas nyob ib leeg, qhov no yuav yuav tsum tau khiav hauj lwm rau cov yam yas hom hnyav (2 qhov chaw) thiab celluloid chips (1 ib feem). Cov khoom xyaw tov thiab muab cia rau hauv ib lub taub ntim nrog ib tug nruj hau.

Tsevneeg thermoplastic txawv los ntawm thermosets, nws muaj peev xwm muab los siv nyob rau hauv ob peb txoj kev:

1 txoj kev

Txhoov qhov chaw lubricating ntxim rau cov yas hnyav, thiab tos kom txog thaum lub cais npoo yuav ua nplaum, ces ntxiv mus cov khoom thiab muab nyob rau hauv lub xovxwm mus ua kom tiav hardening.

txoj kev 2

Rau gluing siv nitrocellulose cov nplaum rau cov yas hom "Mars", "C-1" thiab "MC-1".

3 Txoj Kev

Lub npoo yuav tsum tau sib raug zoo yog rhuab saum toj no rau hauv lub teeb yog thov thereto los yog molten hlau, whereupon lub softened ntug qhov chaw muaj kev cob cog. Thaum cua sov yog tsim nyog los tiv thaiv kom txhob burning, hais tias cov leeg yog tsis tsaus ntuj nti.

Yog li ntawd, yuav kho tus tshaj plaws kav rau ib ntev lub sij hawm thiab tsis tau poob rau hauv daim ntawv, nws yog tsim nyog los xaiv qhov zoo tshaj plaws cov nplaum rau cov hom yas. Tom qab tag nrho, tsuas yog kom zoo xaiv nplaum yuav muab ib tug txhim khu kev qha kev twb kev txuas.