Los ntawm kev tshawb nrhiav, peb tau kawm tias ntau tus neeg tsis muaj kev piav qhia meej txogfasteners. Piv txwv li, qee tus neeg xav yuav ib co fasteners, tab sis thaum lawv tham txog cov ntsiab lus thiab yuav ua li cas, lawv ib txwm tsis paub yuav piav qhia txog cov fasteners uas lawv xav yuav. Tab sis pib hnub no, koj tsis tas yuav txhawj txog nws. Raws li cov khoom lag luam zoo qub ntawm cov fasteners, hnub no Xiaorui yuav coj koj mus kawm ntxiv txog yuav ua li cas piav qhia cov khoom fastener kom raug.
Cov yam ntxwv uas yuav tsum tau cim los piav txog cov fasteners yog: cov khoom npe (tus qauv), specification, cov khoom, qib zog, thiab kev kho deg. Xws li: DIN912, M4-0.7x8, SCM435, 12.9 qib, blackened.
1. Cov khoom npe (tus qauv): Lus Cim: Rau cov ntsia hlau tsis muaj cov qauv, uas yog cov khoom tsis zoo, cov duab kos yuav tsum tau muab.
Piv txwv li, DIN912, Suav lub npe yog:hexagon socket taub hau ntsia hlau, qhov no yog lub npe khoom.
Txawm li cas los xij, qhov tseeb tshaj plaws yog hu rau tus qauv, vim hais tias GB70 kuj muaj xws li cov khoom npe; tab sis ob tus qauv muaj qhov sib txawv ntawm ntau qhov chaw.
Cov qauv kev muaj peev xwm tshaj plaws hauv ntiaj teb yog: German Standard (DIN), International Standard (ISO), Suav Tebchaws Standard (GB), American Standard (ANSI), thiab Japanese Standard (JIS).
2. Specifications: General screws hu ua nominal txoj kab uas hla ntawm cov xov thiab qhov ntev ntawm cov ntsia hlau.
Nominal thread inch, metric feem ntau siv yog: M2, M3, M4, M5, M6, M8, M10, M12, thiab lwm yam;
Cov neeg Asmeskas uas nquag siv yog: 4#-40, 6#-32, 8#-32, 10#-24, 1/4-20, 5/{ {11}}, 3/8-16, 1/2-13, thiab lwm yam.
Cov ntsia hlau ntev yog hais txog qhov ntev uas tau muab tso rau hauv cov khoom thauj khoom. Piv txwv li: countersunk taub hau screws yog loaded nrog tag nrho ntev, ib nrab countersunk taub hau screws yuav tsum tau ntxiv ib nrab ntawm qhov ntev ntawm lub taub hau, thiab qhov ntev ntawm cylindrical taub hau screws tsis suav nrog lub taub hau loj. zoo li:
Rau specifications, lub npe tag nrho yog nyiam dua ntxiv rau lub suab. Piv txwv li, M{{0}}.7x8, sab nraud ntawm 4 ntiv tes yog 4mm, 0.7 txhais tau tias qhov kev ncua deb ntawm ob tus hniav peaks yog 0.7mm, thiab qhov ntev ntawm 8 ntiv tes embedded nyob rau hauv lub loaded khoom yog 8mm.
Rau qhov yooj yim, yam tsis tau sau cov hniav nyob deb, peb default tus hniav ntxhib raws li tus qauv hniav, vim nws yog cov feem ntau; yog li tsis tas yuav kos nws. Qhov no tsuas yog muaj nyob rau hauv metric system, thiab Asmeskas cov khoom tseem yuav tsum tau kos lub suab.
Ntawm no peb yuav tsom mus rau qhov tshwj xeeb ntawm American screws, xws li 6#-32* 3/8, 6# yog cov kab uas hla ntawm cov hniav, uas yog ze rau 3.5 hli; 32 yog 32 cov hniav nyob rau hauv cov xov ntev ib nti (sib npaug rau cov hniav ntawm metric screws nrug); 3/8 yog qhov ntev ntawm cov ntsia hlau (tshwj xeeb yog tib yam li cov ntsia hlau metric).
Nov yog 2 cov qauv uas yuav tsum nco ntsoov: Hniav sab nraud A#=(Ax0.013 ntxiv rau 0.06)x25.4(mm), 1 nti=25.4mm.
Ntawm lawv, 2#=2.2mm, 4#=2.9mm, 6#{7}}.5mm, 8#4.2mm, 10#=4.8mm yog cov ntaub ntawv uas yuav tsum nco ntsoov. Tus naj npawb ntawm cov hniav sib raug rau cov ntsia hlau ntawm txhua qhov tshwj xeeb yuav tsum tau cim: 2#-56, 4#-40, 6#-32, 8#-32, 10# -24, 1/4-20, 5/16-18 ,3/8-16,1/2-13 (American standard hniav).
Lus Cim: UNC cov hniav yog ib tus hniav txheem, thiab UNF yog cov hniav zoo. Peb ua cov hniav ntxhib raws li cov hniav txheem.
3. Khoom siv: Cov khoom siv feem ntau yog: carbon steel, stainless hlau, stainless hlau, tooj liab, txhuas, thiab lwm yam.
Cov pa roj carbon steel tau muab faib ua cov pa roj carbon tsawg (xws li C1008 / C1010 / C1015 / C1018 / C1022), nruab nrab carbon steel (xws li C1035), siab carbon steel (C1045 / C1050), hlau alloy (SCM435/10B21/40Cr).
Feem ntau, C1008 yog ua los ntawm cov khoom qib zoo tib yam, xws li 4.8 qib screws thiab cov txiv ntseej qib zoo tib yam; C1015 feem ntau yog siv rau lub nplhaib screws; C1018 feem ntau yog siv rau lub tshuab screws, ntawm chav kawm, nws kuj yog siv rau tus kheej tapping screws; C1022 feem ntau yog siv rau tus kheej tapping screws; C1035 ua si 8.8 qib screws; C1045/10B21/40Cr ua si 10.9 qib screws; 40Cr / SCM435 ua si 12.9 qib screws.
Stainless hlau yog SS302 / SS304 / SS316 ntau tshaj. Tau kawg, cov khoom lag luam SS201 coob kuj tseem nrov tam sim no, thiab txawm tias cov khoom lag luam nrog cov ntsiab lus qis nickel, peb hu cov khoom tsis muaj tseeb stainless hlau; cov tsos zoo li zoo li cov hlau tsis muaj steel, tab sis kev ua haujlwm tiv thaiv corrosion yog qhov sib txawv heev.
4. Qib zog: Qib zog feem ntau yog hais txog carbon steel fasteners.
Cov qib siab zog ntawm carbon steel screws yog: 4.8, 5.8, 6.8, 8.8, 10.9, 12.9. Cov txiv ntseej yog sib npaug: qib 4, qib 6, qib 8, qib 10, qib 12.
Feem ntau, cov ntsia hlau hauv qab qib 8.8 yog hu ua cov ntsia hlau zoo tib yam, thiab cov ntsia hlau saum qib 8.8 (nrog rau qib 8.8) yog cov ntsia hlau muaj zog. Qhov txawv yog tias cov ntsia hlau muaj zog yuav tsum tau tempered thiab kub-kho.
5. Kev kho deg: Kev kho deg yog tsuas yog ua kom muaj kev tiv thaiv corrosion, thiab qee qhov kuj coj mus rau hauv tus account cov xim, yog li nws tsuas yog rau cov khoom siv carbon steel, uas feem ntau yuav tsum tau kho deg.
Kev kho saum npoo muaj xws li: blackening, galvanizing, tooj liab plating, nickel plating, chrome plating, nyiaj plating, kub plating, Dacromet, kub-dip galvanizing, thiab lwm yam.;
Muaj ntau ntau hom galvanizing, xws li xiav thiab dawb zinc, xiav zinc, dawb zinc, daj zinc, dub zinc, ntsuab zinc, thiab lwm yam, thiab lawv kuj tau muab faib ua kev tiv thaiv ib puag ncig thiab kev tiv thaiv ib puag ncig. Txhua hom plating muaj ntau yam txheej thicknesses kom tau raws li cov kev xav tau sib txawv. Ntsev tshuaj tsuag cov nyhuv.
Ceeb Toom: Qhov no feem ntau yog qhov cim cim ntawm lub fastener, tab sis yog tias koj xav tau kom meej, tseem muaj ntau, piv txwv li, lub nominal txoj kab uas hla ntawm cov xov nyob rau hauv lub fastener specification yog muab faib ua ntau yam, piv txwv li, muaj ib tug ntau yam xov. (M), yeeb nkab xov (C, Rc, Rp, R), trapezoidal xov (Tr) thiab zigzag xov (B), thiab lwm yam.
