Lub ntsiab txhais ntawm cov hlau tsis muaj steel hlau hais txog tus kheej tapping screws uas tsis tas yuav siv nrog txiv ntseej. Lub xov yog nws tus kheej tapping thiab muaj ib qho taw taub. Thaum cov voos plaub ntawm cov voos kheej kheej ua tus ciav hlau screwed rau hauv lub qhov nyob rau hauv cov yas hlau khoom, lawv nias rau hauv lub qhov rau sab hauv cov xov thiab tsim ib txhim khu xauv xov txuas.
Tapping self-tapping
Feem ntau yog hais txog cov xov hniav yog qhov khawb ntawm yus tus kheej, yog li ntawd tus kheej tapping, tsis tas yuav siv nrog txiv ntseej. Muaj ntau ntau yam ntawm cov ntsia hlau hau, nrog lub taub hau ntawm taub hau, lub taub hau lub lauj kaub, lub taub hau taub hau, thiab lub taub hau. Kiv taub hau, nrog hau thiab hais txog. Tail yog feem ntau tipped. Ua kom tus kheej khawm cov nyhuv.
Tapping self-tapping kuj tseem hu ua self-tapping screws. Lub npe tsis zoo li qub, tab sis lub ntsiab lus yog tib yam nkaus. Nws yog txhua tus kheej tapping. Kev ua haujlwm tseem ceeb ntawm tus kheej tapping screws yog tias lawv tsis tas yuav siv nrog ceev. Nyob rau hauv cov nqe lus ntawm tus nqi, ib tug loj tus naj npawb ntawm lawv tau txais kev cawmdim. Yuav tsis muaj nqi rau cov txiv ntseej.
Tseem ceeb nta Txawm hais tias muaj ntau ntau hom stainless hlau screws, lawv txhua tus muaj cov nram qab no tseem ceeb nta:
(1) Feem ntau yog ua los ntawm cov khoom thauj (99% ntawm tag nrho cov khoom). Nws tuaj yeem ua tau los ntawm cov hlau tsis muaj steel los yog cov hlau uas tsis yog ferrous.
(2) Cov khoom yuav tsum tau sov kho. Carbon steel self-tapping screws yuav tsum yog carburized thiab stainless hlau screws yuav tsum yog khoom tov hardened. Yog li ntawd tus kheej tapping screws tau raws li tus txheej txheem tus qauv ntawm cov khoom siv thiab kev ua haujlwm.
(3) Cov khoom muaj ib qhov chaw siab tawv thiab muaj lub zog zoo nyob hauv tus ntxhais. Qhov ntawd yog "puab sab nraum zoov xwb." Qhov no yog qhov tseem ceeb ntawm cov hlau tsis muaj hlau tsis muaj kev sib tw. Yog tias cov tawv tawv tsis qis, qhov ntsia hlau tsis tau muab tso rau hauv lub cev puag; Yog hais tias tus tub ntxhais muaj kev txom nyem, lub hau yuav txiav tawm thiab siv tsis tau. Yog li ntawd, "puab lub qhov muag tsis zoo" yog ib lub voos kheej kheej uas txaus siab rau kev ua haujlwm.
(4) Cov nplais ntawm cov khoom xav tau kev tiv thaiv kev tiv thaiv saum npoo, uas yog feem ntau electroplating. Qee cov khoom yuav tsum tau kho phosphate (phosphating). Xws li: phaj phaj nws tus kheej tapping screws feem ntau phosphating.
(5) Cov txheej txheem rau kev lag luam. Nws pom zoo kom siv high-speed txias heading machines thiab high-speed xov rolling cav tov los yog high-speed planetary xov rolling cav tov kom paub cov khoom zoo. Lub taub hau ntawm tus kheej tapping tob hau ua li no yog qhov zoo tsim thiab xov zoo yog siab.