Qhov "Gold Standard" rau Screw Selection
Raws li peb cov lus qhia, peb pom zoo rau cov nram qab no hom screws:
Khoom siv: 304 lossis 316 stainless hlau
304 Stainless Hlau: piav qhia tias qhov kev xaiv no yog qhov muaj ntau yam. Stainless hlau muaj chromium thiab npib tsib xee. cov ntsiab lus no tsim cov txheej txheem tiv thaiv uas ua rau cov hlau tsis muaj zog tiv taus corrosion ntau dua . 304 stainless hlau ua haujlwm rau feem ntau thaj chaw uas nyob deb ntawm ntug hiav txwv dej thiab qhov chaw siab ntsev.
316 stainless hlau: 316 stainless hlau alloy yog qhov zoo tshaj plaws rau ze rau - dej hiav txwv lossis ntsev. Cov hlau muaj molybdenum uas txhim kho corrosion kuj ntawm alloys rau chlorides. A 316 alloy yog qhov ruaj khov ntev - lub sijhawm peev.
Zam: Tsis txhob siv cov anodized, hom hlau lossis aluminium screws vim tias cov txheej txheej galvanized tuaj yeem ua rau cov alkaline teeb tsa ntawm cov cement fiberboard thiab xeb. Tsis tas li ntawd, aluminium screws yuav mos thiab corrode yooj yim.
Xov: Zoo- hniav, siab- xov tsim
Fiber cement board yog ntom thiab nkig. Txheem ntoo ntsia hlau nrog cov xov loj tuaj yeem ua rau muaj kev ntxhov siab thiab tawg. Hloov chaw, siv zoo - hniav, siab - xov screws ua rau fiber ntau cement. Qhov kev tsim no muaj:
Tsawg txiav tsis kam: Nws tso cai rau kev nkag tau yooj yim, txo cov ntug chipping.
Kev koom tes loj hauv cheeb tsam: Cov xov ntom ntom tsim kom muaj zog tuav, txo qis.
Stress dispersion: Nws eases expansion pressure thaum lub sij hawm zawm.
Drill Bits: Tus kheej -drilling muaj nuj nqi yog qhov tseem ceeb.
Xaiv cov ntsia hlau nrog ua - hauv cov khoom siv tungsten carbide nyuaj. Cov no nkag mus rau fiber ntau cement nrog yooj yim yam tsis muaj pre-drilling. Qhov no txhim kho kev ua tau zoo thiab ua kom cov ntsia hlau sib dhos. Ua ntej- drilling tuaj yeem siv sijhawm thiab tuaj yeem ua rau lub qhov loj, cuam tshuam rau kev ruaj ntseg.
Ntsia taub hau: trumpet taub hau los yog lub taub hau tiaj tus nrog lub tshuab ntxhua khaub ncaws.
Lub taub hau trumpet: Qhov kev xaiv no feem ntau muaj cov qauv tapered uas tso rau hauv lub rooj tsavxwm kom huv si.
Lub taub hau nrog lub tshuab ntxhua khaub ncaws: Txawm li cas los xij, lub tshuab ntxhua khaub ncaws yog qhov tseem ceeb. Nws ua haujlwm rau ob lub hom phiaj tseem ceeb:
Distributing siab: Nws kis tau tus ntsia hlau lub zog nyob rau hauv ib tug sib npaug zos yam. Qhov no pab tiv thaiv kev puas tsuaj rau cov npoo ntawm lub rooj tsavxwm.
Nws haum nruj rau lub rooj tsavxwm. Qhov no tsim ib qho kev tiv thaiv tsis muaj dej uas tiv thaiv cov dej noo los ntawm kev nkag mus rau hauv lub qhov ntsia hlau.
Ntsiab Installation ceev faj
Xaiv txoj cai ntsia hlau yog qhov tseem ceeb, tab sis kev txhim kho kom zoo yog qhov tseem ceeb.
Khaws ib qho kev taw qhia ntsug: Ib txwm thawb cov ntsia hlau ncaj qha rau hauv lub rooj tsavxwm. Tsis txhob ntxig cov ntsia hlau rau ntawm lub kaum sab xis- ua li ntawd, yuav ua rau tsis muaj zog tuav thiab ua kom lub qhov.
Tighten ntswj me ntsis: Tighten lub hau kom txog thaum lub tshuab ntxhua khaub ncaws tiaj tus ntawm lub rooj tsavxwm. Tshaj -Tightening tus ntsia hlau tuaj yeem tsoo lub rooj tsavxwm thiab ua rau lub foob tsis muaj dej.
Tso cai rau thermal expansion thiab contraction: Boards yuav nthuav thiab cog lus nrog kub. Nco ntsoov tawm qhov sib txawv ntawm cov laug cam thiab cov npoo ruaj khov raws li tau qhia hauv peb cov lus qhia kev teeb tsa.