Thaum ua haujlwm kev tsim kho, kho cov rooj tog, nrog rau kev kho ntau yam khoom siv sab hauv tsev (duab, txee, thiab lwm yam), nws tsis tuaj yeem ua yam tsis muaj qhov tsim nyog xws li tus kheej tapping ntsia hlau. Muaj ntau ntau yam ntawm cov cuab yeej fastening no, tab sis ntoo screws yog kab tias hom siv ntau tshaj plaws. Nws muab kev ruaj ntseg fastening ntawm ntoo los yog cov ntaub ntawv ntoo (hardboard, chipboard, plywood), nrog rau fastening drywall los xij rau lub hauv paus ntoo.
Nyob rau hauv tsos, cov tapping tus kheej no zoo li cov ntsia hlau. Tab sis lawv txawv ntawm cov hom fasteners, uas yog threaded rau 2/3 ntawm qhov ntev, nyob rau hauv uas lawv yog threaded raws tag nrho ntev ntawm cov khoom.
Lub ntsiab feature uas txawv nws tus kheej tapping screws rau ntoo los ntawm tib yam rau hlau yog ib tug rarer xov suab (lub kaum sab xis ntawm inclination yog 45 otxheeb ze rau saum lub profile), ntsig txog, thiab tus lej tsawg dua. Qhov no yog vim lub fact tias, nyob rau hauv nws cov qauv, ntoo tsis yog li nyuaj thiab ntom li hlau.
Dab tsi yog ntoo ntsia hlau
polawv cov tsos, uas nyob ntawm qhov tshwj xeeb ntawm kev tsim khoom, lawv yog:
- golden (daj-dhau);
- dawb (galvanized);
- dub (phosphated).
Txawm hais tias muaj xim, cov khoom siv rau kev tsim tus kheej tapping screws yog high-strength carbon steel. Nws tau txais kev kho tshwj xeeb uas ua rau muaj kev tiv thaiv kom ya raws. Tom qab ntawd, cov hlau yog coated nrog ib tug nyias txheej ntawm zinc, los yog kho nrog ib tug tshwj xeeb tshuaj uas muab ib tug daj xim, los yog phosphate los txhim kho zawv zawg ntawm cov khoom thiab muab ib tug siab ntawm adhesion ntawm lub hau nto mus rau lub finishing. khoom. Nws yuav tsum raug sau tseg tias cov ntoo dub siv ntau zaus.
Structurally, lawv muaj cov hauv qab no:
- Rov. Lub hauv paus ntawm tus kheej tapping ntsia hlau, uas muaj xov.
- Head a. Nyob rau hauv tsos, muaj conical, carob, voj.
- Slot. Nyob ntawm cov cuab yeej siv rau kev sib tw, muaj cov cruciform, ncaj thiab hex.
- Tib. Tej zaum yuav taw tes los yog xyaum.
Nyob ntawm seb qhov twg yog siv los kho cov ntsia hlau ntoo, lawv qhov ntau thiab tsawg tuaj yeem sib txawv - los ntawm 11 txog 300 hli ntev. Feem ntau siv tus kheej tapping screws yog 35 hli ntev thiab 3.5 hli dav.
Txoj kev siv tus kheej tapping screws
- Yuav kom kev sib txuas kom txaus ntseeg tau, nws yog ib qho tseem ceeb uas yuav tau xaivqhov xav tau ntev ntawm cov ntsia hlau, uas yuav tsum tshaj qhov tuab ntawm qhov txuas los ntawm tsawg kawg ib thiab ib nrab zaug.
- Feem ntau ntawm tus kheej tapping screws siv rau fastening qhov chaw tsis xav tau pre-drilling qhov. Txawm li cas los xij, qee zaum koj yuav tsum tau nrog cov ntoo tawv. Nyob rau hauv rooj plaub no, nws yog ib qho tsim nyog yuav tsum tau laum ib lub qhov kom tsis txhob ua txhaum txoj kev ncaj ncees ntawm lub qhov ntawm qhov kev sib tshuam. Yog tias siv cov ntsia hlau nrog lub cheeb ntawm ntau tshaj 4 hli, nws yuav tsum tau ua kom tsis txhob tawg ntawm cov ntoo ua haujlwm. Lub qhov yog drilled mus rau ib tug ntev ntawm 2/3 ntawm tus kheej-tapping ntsia hlau, thiab txoj kab uas hla ntawm lub laum yuav tsum yog 1-1.5 hli thinner tshaj qhov dav ntawm tus kheej-tapping ntsia hlau. Txij li thaum nws nyuaj heev los nrhiav kev xyaum tshwj xeeb rau ntoo ntawm txoj kab uas xav tau, koj tuaj yeem siv tib yam, tab sis rau hlau.
- Thaum siv rooj tog tus kheej tapping screws (paub meej), drilling lub qhov yog yuav tsum tau. Nyob rau hauv cov ntaub ntawv no, nws yuav tsum tau siv ib tug tshwj xeeb xyaum nrog ib tug sib txawv txoj kab uas hla ntawm nws ntev, vim hais tias xws li tus kheej-tapping screws muaj ib tug thickening ze rau lub taub hau.
