Cov lus qhia:
Countersunk taub hau screws feem ntau yog siv rau fastening tom qab installation. Lawv muaj ob thicknesses. Tom qab cov screws tuab yog nruj, qee qhov ntawm cov xov yuav tsis nkag mus rau hauv qhov threaded qhov. Hauv qhov no, nws tuaj yeem txiav txim siab tias cov screws tuaj yeem raug kaw.
Tseem muaj ib tug nyias. Vim tias nws cov tuab me me, cov ntsia hlau ua tiav dhau los ua lub qhov conical tom qab dhau los ntawm lub qhov, yog li thaum koj xav tias cov ntsia hlau tau nruj, nws tsis tau nruj.
Cov lus qhia rau kev siv:
1. Thaum reaming, nws yuav tsum tau muab sau tseg tias taper yuav tsum yog 90 degrees. Yog tias 90 degree tsis tuaj yeem lav tau, lub taper yuav tsum tsawg dua 90 degrees kom ntau li ntau tau.
2. Yog hais tias lub thickness ntawm cov khoom teev yog nyias dua lub taub hau ntawm cov ntsia hlau, nws raug nquahu kom xaiv ib tug countersunk taub hau ntsia hlau nrog ib tug me me, los yog ua rau lub reaming qhov me me.
3. Yog hais tias koj yuav tsum tau siv ntau countersunk screws ntawm ib feem, koj yuav tsum tsis txhob drilling crookedly, thiaj li tsis mus saib unsightly nyob rau sab nraum tom qab sib dhos.
