Tau ntau tshaj 50 xyoo, dowel fastening tau tshwm sim nyob rau hauv cov tsev lag luam, tab sis ntau tus neeg tseem tawm tsam kom nkag siab tias yuav ua li cas dowels tuaj yeem txuas rau cov hlau kom ruaj ntseg zoo li cov tsoos ntsia hlau. Tus yuam sij rau kev ua haujlwm ntawm tus pin thev naus laus zis yog qhov tsim ntawm tus pin thiab tsav system.
Yuav ua li cas fasteners ua hauj lwm
Cov pins yog tsim los ntawm qib tshwj xeeb ntawm cov hlau, hardened los ntawm cov txheej txheem kev kho cua sov tshwj xeeb, ua rau lawv muaj zog thiab muaj zog heev.
Thaum tsav mus rau hauv cov hlau nrog cov cuab yeej hluav taws xob tsim nyog, lawv cov lus qhia zoo li lub ntsej muag tho lub hlau sib npaug, tsis yog khawb nws tawm lossis rhuav tshem nws zoo li tus ntsia hlau ib txwm. Cov hlau tshem tawm bounces ib ncig ntawm tus pin, tsim kom muaj zog compressive quab yuam los ntawm cov hlau ntawm lub shank ntawm fastener.
Txhua tus pin thiab knurl qauv yog tsim los rau ntau yam kev siv, sib piv cov yam ntxwv thiab kev ua tau zoo rau cov khoom raug fastened. Thaum cov pins tsim nyog siv rau hauv daim ntawv thov uas lawv tsim, lawv tuav lub zog thiab kav ntev feem ntau tshaj cov ntsia hlau.