Cov yam ntxwv tseem ceeb ntawm tus kheej tapping Screws
Sep 12, 2022
Txawm hais tias muaj ntau yam ntawm tus kheej tapping screws, lawv txhua tus muaj cov yam ntxwv tseem ceeb hauv qab no:
(1) Nws feem ntau yog ua los ntawm cov hlau carburized (99 feem pua ntawm tag nrho cov khoom). Kuj muaj nyob rau hauv stainless hlau los yog non-ferrous hlau.
(2) Cov khoom yuav tsum tau kho cua sov. Carbon steel self-tapping screws yuav tsum tau carburized, thiab stainless hlau self-tapping screws yuav tsum tau tov hardened. Txhawm rau ua kom tus kheej tapping ntsia hlau ua tau raws li cov khoom siv kho tshuab thiab kev ua tau zoo raws li tus qauv.
(3) Cov khoom muaj qhov tawv tawv siab thiab cov tub ntxhais zoo toughness. Ntawd yog, "sab hauv softness thiab txheej rigidity". Qhov no yog qhov tseem ceeb ntawm kev ua haujlwm ntawm tus kheej tapping screws. Yog hais tias qhov saum npoo hardness tsawg, nws tsis tuaj yeem ntsia hlau rau hauv matrix; Yog hais tias lub toughness ntawm cov tub ntxhais yog tsis zoo, nws yuav tawg sai li sai tau raws li nws yog screwed, thiab nws yuav siv tsis tau. Yog li ntawd, "sab hauv softness thiab txheej rigidity" yog qhov yuav tsum tau rau tus kheej-tapping screws kom tau raws li qhov yuav tsum tau ua.
(4) Qhov saum npoo ntawm cov khoom xav tau kev kho qhov chaw tiv thaiv, feem ntau electroplating kho. Qee cov khoom nto yuav tsum tau kho phosphate (phosphating). Xws li: phab ntsa vaj huam sib luag self-tapping screws feem ntau phosphating.
(5) Nws yog tsim los ntawm cov txheej txheem txias. Nws raug nquahu kom siv lub tshuab ua kom txias txias thiab lub tshuab ua haujlwm ceev ceev los yog lub tshuab ua haujlwm ceev ceev kom paub meej cov khoom zoo. Tus kheej-tapping ntsia hlau tsim nyob rau hauv txoj kev no muaj lub taub hau tsim zoo thiab cov xov zoo zoo.
