
Dacromet galvanized Qib 8.8 thiab 10.9 siab - tensile B7 hex taub hau bolts thiab txiv ntseej feem ntau siv siab - lub zog alloy hlau ua cov khoom siv hauv paus.
Dacromet galvanized Qib 8.8 thiab 10.9 siab - tensile B7 hex taub hau bolts thiab txiv ntseej feem ntau siv siab - lub zog alloy hlau ua cov khoom siv hauv paus. B7 lub npe qhia tias cov khoom ua tau raws li cov qauv ASTM A193, uas tau lees paub dav dav rau lawv cov khoom siv kho tshuab thiab tshuaj lom neeg muaj pes tsawg leeg hauv cov ntawv thov kev ntxhov siab.
Rau Qib 8.8 bolts thiab ceev, cov hlau alloy feem ntau muaj cov khoom xws li carbon, manganese, thiab silicon. Tom qab kev kho cua sov kom zoo, cov khoom no ua haujlwm ua ke kom ua tiav lub zog tensile yam tsawg kawg nkaus ntawm 800 MPa thiab lub zog tawm los ntawm 640 MPa. Qhov no ua rau lawv haum rau kev siv dav dav - mus rau nruab nrab - hnyav - lub luag haujlwm uas txhim khu kev qha fastening nyob rau hauv qhov tseem ceeb loads yuav tsum tau.
Qib 10.9 siab - tensile variants, ntawm qhov tod tes, yog tsim los ntawm cov hlau alloy uas muaj kev tswj xyuas ntau dua ntawm cov tshuaj muaj pes tsawg leeg thiab kev kub ntxhov ntau dua - kev kho mob. Lawv muaj peev xwm ua tau lub zog tensile yam tsawg kawg nkaus ntawm 1000 MPa thiab lub zog tawm los ntawm 900 MPa, ua rau lawv tiv taus cov loads siab heev, kev vibrations, thiab cov neeg kho tshuab kev ntxhov siab. Qhov qib siab-lub zog no feem ntau yog ua haujlwm hauv cov qauv kev sib txuas tseem ceeb uas tsis ua haujlwm tsis yog qhov kev xaiv.
Lub ntsiab lus ntawm cov khoom no yog Dacromet galvanization. Dacromet txheej yog ib qho kev ua haujlwm siab tiv thaiv corrosion uas tsim los ntawm zinc flakes, aluminium flakes, chromates, thiab organic binders. When applied to the surface of the alloy steel bolts and nuts, it forms a dense, uniform, and adherent film that provides superior corrosion resistance compared to traditional galvanization methods.
Cov khoom kab ntawm Dacromet galvanized Qib 8.8 thiab 10.9 siab - tensile B7 hex taub hau bolts thiab txiv ntseej suav nrog ntau yam qauv categorized los ntawm qhov loj me, ntev, thiab cov ntawv thov tshwj xeeb:
Standard Metric thiab Imperial Models: Muaj nyob rau hauv ntau yam ntawm metric thiab imperial loj. Nyob rau hauv metric system, bolt diameters feem ntau yog nyob ntawm M6 mus rau M36, thaum nyob rau hauv lub imperial system, lawv npog los ntawm 1/4 "mus rau 1 - 1/2". Qhov ntev ntawm cov bolts tuaj yeem sib txawv ntawm 20mm (los yog 3/4 ") mus rau 300mm (los yog 12") lossis ntau dua, nyob ntawm qhov xav tau tiag tiag ntawm cov haujlwm sib txawv. Cov qauv qauv ua raws li cov qauv thoob ntiaj teb thiab lub teb chaws rau hex taub hau bolts thiab txiv ntseej, ua kom muaj kev sib raug zoo nrog tus qauv wrenches, sockets, thiab lwm yam khoom siv fastening.
High - Load - Peev Xwm Tshwj Xeeb Qauv: Rau kev siv lub luag haujlwm hnyav, kev tsim kho loj, thiab kev teeb tsa tseem ceeb hauv kev teeb tsa, siab-load-muaj peev xwm tshwj xeeb qauv muaj. Cov bolts thiab txiv ntseej no feem ntau muaj cov kab uas loj dua thiab tuab dua hex taub hau los tswj cov tensile thiab shear rog. Lawv tau tsim tshwj xeeb rau kev siv hauv cov ntawv thov xws li cov tshuab hnyav sib dhos, kev tsim kho choj, thiab kev ua haujlwm siab - nce siab, qhov muaj peev xwm tiv taus huab cua hnyav yog qhov tseem ceeb.
Corrosion - Resistant Enhanced Qauv: Dhau li ntawm tus qauv Dacromet galvanization, qee cov qauv yuav raug kho ntxiv los tiv thaiv corrosion los yog siv cov txheej txheem siab heev ntawm Dacromet txheej. Cov qauv kev txhim kho corrosion-resistant no yog tsim rau ib puag ncig hnyav heev, xws li offshore platforms, tshuaj nroj tsuag, thiab thaj chaw uas muaj huab cua ntau thiab av noo. Lawv tuaj yeem muab kev tiv thaiv txuas ntxiv tiv thaiv corrosion hnyav, kom ntseeg tau lub sijhawm ntev ntawm cov txheej txheem fastening.
Kev tsim cov Dacromet galvanized Qib 8.8 thiab 10.9 siab - tensile B7 hex taub hau bolts thiab txiv ntseej suav nrog ntau cov kauj ruam meej thiab nruj zoo - tswj kev ntsuas:
Kev npaj khoom siv: High-zoo alloy steel raw cov ntaub ntawv yog ua tib zoo muab los ua kom tau raws li qhov yuav tsum tau muaj ntawm ASTM A193 B7 thiab qib tshwj xeeb lub zog (Qib 8.8 lossis 10.9). Kev tshuaj xyuas nruj yog ua los ntawm cov tshuaj muaj pes tsawg leeg, cov khoom siv kho tshuab, thiab qhov zoo ntawm cov hlau. Cov hlau tuav lossis rods raug txiav rau hauv qhov ntev raws li qhov ntau thiab tsawg ntawm cov bolts thiab txiv ntseej.
Kev tsim: Cov hlau alloy yog tsim rau hauv cov yam ntxwv hex lub taub hau thiab shank (rau bolts) los yog hex txiv ntoo zoo los ntawm kev txias - nqes lossis kub - forging txheej txheem. Txias - taub hau feem ntau yog siv rau me me - qhov loj me bolts thiab txiv ntseej, uas ua haujlwm tau zoo rau kev tsim khoom loj thiab tuaj yeem tsim cov duab kom raug thaum tswj qhov tseeb qhov tseeb. Kub - forging yog siv rau loj - txoj kab uas hla los yog siab - lub zog bolts thiab ceev, qhov twg cov hlau yog rhuab mus rau ib tug malleable lub xeev thiab ces zoo li tus nyob rau hauv siab siab kom ua tau raws li qhov yuav tsum tau muaj zog thiab meej qhov ntev.
Xov: Tom qab tsim, cov bolts tau ua haujlwm threading. Xov dov yog txoj kev nyiam vim nws tsim cov xov muaj zog los ntawm txias - ua haujlwm ntawm cov hlau, txhim kho qhov qaug zog ntawm cov bolts. Tshwj xeeb threading tuag yog siv los xyuas kom meej tias cov xov suab, profile, thiab qhov ntev ua tau raws li cov qauv tsim nyog, lav kom haum nrog cov txiv ntseej. Rau cov txiv ntseej, cov xov sab hauv yog ua tib zoo txiav los yog tsim los xyuas kom meej haum nrog cov bolts sib thooj.
Kev kho cua sov: Kom ua tau raws li qhov xav tau Qib 8.8 lossis 10.9 cov khoom siv kho tshuab, cov bolts tsim thiab ceev tau raug rau cov txheej txheem kev kho cua sov. Qhov no feem ntau suav nrog annealing kom soften cov hlau thiab tshem tawm cov kev ntxhov siab sab hauv, quenching kom hardness thiab zog, thiab tempering los kho cov hardness thiab toughness mus rau qib siab. Cov txheej txheem kev kho cua sov yog tswj hwm los xyuas kom meej tias cov bolts thiab cov txiv ntoo ua tau raws li cov kev cai nruj thiab kev ua tau zoo ntawm lawv cov qib.
Daim ntawv thov Dacromet txheej: Ua ntej, cov bolts thiab txiv ntseej raug ntxuav kom huv si kom tshem tawm cov kab mob, roj, lossis nplai ntawm qhov chaw. Tom qab ntawd, lawv yog immersed nyob rau hauv ib tug dacromet tov los yog coated los ntawm txau, uas sib npaug zos cov tshuaj uas muaj zinc flakes, txhuas flakes, chromates, thiab binders ntawm lawv qhov chaw. Tom qab txheej txheej, cov khoom raug kho ntawm qhov kub thiab txias (feem ntau nyob ib ncig ntawm 300 ° C). Thaum lub sij hawm kho, lub Cheebtsam ntawm cov tshuaj Dacromet teb los tsim ib tug ntom, corrosion-resistant txheej nrog zoo heev adhesion rau alloy steel substrate.
Kev sib dhos thiab kev soj ntsuam zoo: Bolts yog khub nrog cov txiv ntseej sib xws. Txhua batch ntawm cov khoom yuav raug soj ntsuam nruj zoo. Dimensional checks yog ua los xyuas kom meej tias txoj kab uas hla, ntev, xov specifications, thiab lub taub hau loj ntawm bolts thiab ceev raws li tus qauv. Kev ntsuam xyuas tshuab, xws li lub zog tensile, pov thawj load, thiab torque - nro tests, yog ua los xyuas cov load - bearing peev xwm thiab kev ua tau zoo ntawm cov ntsia liaj qhov rooj - txiv ntseej khub. Kev tshuaj xyuas qhov muag kuj tau ua los xyuas qhov tsis xws luag ntawm qhov chaw, kev tiv thaiv Dacromet txheej, thiab txhua yam tsis ua raws li qhov yuav tsum tau ua. Tsuas yog cov khoom uas dhau tag nrho cov kev ntsuam xyuas zoo tau pom zoo rau kev ntim khoom thiab xa khoom.
Dacromet galvanization nto kho yog qhov tseem ceeb hauv kev ua tau zoo ntawm cov bolts thiab txiv ntoo:
Kev kho mob ua ntej: Ua ntej Dacromet txheej, bolts thiab txiv ntseej yog pre-kho kom zoo adhesion ntawm txheej. Txoj kev kho ua ntej no pib nrog degreasing, qhov twg cov khoom raug ntxuav nrog cov kuab tshuaj los yog cov tshuaj alkaline kom tshem tawm cov roj, roj, thiab lwm yam khoom paug. Tom qab ntawd, pickling yog nqa tawm siv cov kua qaub kom tshem tawm xeb, nplai, thiab inorganic impurities los ntawm qhov chaw. Tom qab pickling, bolts thiab txiv ntseej yog rinsed kom huv si kom tshem tawm cov residual acid, thiab thaum kawg, lawv qhuav los npaj rau lub Dacromet txheej.
Dacromet Txheej Txheej: Muaj ob txoj hauv kev rau kev thov Dacromet txheej: immersion thiab txau. Nyob rau hauv txoj kev immersion, lub pre-kho bolts thiab ceev yog immersed kiag li nyob rau hauv cov tshuaj Dacromet, tso cai rau cov kev daws rau tag nrho cov saum npoo. Nyob rau hauv txoj kev txau, cov tshuaj Dacromet yog txau sib npaug rau saum npoo siv cov cuab yeej txau. Tom qab txheej, cov khoom yog muab tso rau hauv ib lub qhov cub rau curing. Thaum lub sij hawm kho, cov dej hauv cov tshuaj Dacromet evaporates, thiab zinc flakes, aluminium flakes, chromates, thiab binders reacts chemically tsim ib tug nruam, ntom, thiab ruaj khov txheej nrog ib tug tuab ntawm txog 5 - 15 microns.
Post-kev kho mob: Hauv qee kis, kev kho mob tom qab tuaj yeem ua tom qab Dacromet txheej. Qhov no tuaj yeem suav nrog kev kho mob passivation nrog cov tshuaj tshwj xeeb txhawm rau txhim kho kev tiv thaiv corrosion ntawm cov txheej txheem, lossis siv lub tsho sab saum toj los txhim kho kev puas tsuaj thiab cov tsos ntawm qhov chaw. Tom qab - kev kho mob pab txhim kho kev ua tau zoo ntawm Dacromet - coated bolts thiab txiv ntseej thiab hloov lawv mus rau qhov kev thov sib txawv.
Dacromet galvanized Qib 8.8 thiab 10.9 siab - tensile B7 hex taub hau bolts thiab txiv ntseej yog dav siv nyob rau hauv ntau yam tseem ceeb engineering thiab kev tsim kho teb:
Lub tsev thiab kev tsim kho: Hauv cov phiaj xwm loj hauv tsev, tshwj xeeb tshaj yog cov tsev siab siab, txuas hniav, thiab cov nroj tsuag muaj kev lag luam, cov bolt - txiv ntseej yog siv los txuas cov kab hlau, kab, thiab trusses. Lawv lub zog siab ua kom muaj kev ruaj ntseg thiab thauj khoom - kev muaj peev xwm ntawm lub tsev qauv, thaum Dacromet galvanization muab kev tiv thaiv ntev tiv thaiv corrosion, txawm nyob rau sab nraum zoov ib puag ncig raug rau huab cua, nag, thiab lwm yam huab cua.
Heavy Machinery thiab Khoom Siv Khoom Siv: Hauv kev tsim cov tshuab hnyav, xws li cov cuab yeej siv, mining machinery, thiab cov tshuab ua liaj ua teb, cov high-tensile bolts thiab txiv ntseej yog qhov tseem ceeb rau kev sib sau cov khoom tseem ceeb. Lawv tuaj yeem tiv taus qhov hnyav, kev vibrations, thiab shocks tsim thaum lub sijhawm ua haujlwm ntawm cov tshuab. Qhov zoo tshaj plaws corrosion kuj ntawm Dacromet txheej kuj tiv thaiv cov bolts thiab ceev los ntawm kev ua hauj lwm hnyav, xws li raug rau av, ya raws, thiab tshuaj.
Automotive thiab Aerospace Industries: Hauv kev lag luam automotive, Qib 8.8 thiab 10.9 siab - tensile bolts thiab ceev yog siv nyob rau hauv lub cav sib dhos, chassis tsim, thiab ncua kev kawm ntawv systems. Lub siab - lub zog 10.9 - qib bolts yog qhov tseem ceeb rau kev ruaj ntseg cov cav tov thiab ua kom lub tsheb ua haujlwm thiab kev nyab xeeb nyob rau hauv ntau yam kev tsav tsheb. Hauv kev lag luam aerospace, qhov twg yuav tsum muaj cov qauv kev ua tau zoo thiab kev ua tau zoo, cov bolts thiab cov txiv ntoo no tau siv los ua cov khoom siv dav hlau. Lawv cov khoom raug tsim, siab zog, thiab txhim khu kev qha corrosion kuj yog qhov tseem ceeb rau kev nyab xeeb thiab kev ua haujlwm ntawm lub dav hlau.
Lub zog thiab lub zog tsim: Hauv cov chaw tsim hluav taws xob, suav nrog cov khoom siv thermal, nuclear, thiab cov khoom siv hluav taws xob tauj dua tshiab, cov bolt - txiv ntseej yog siv rau cov khoom siv fastening, cov kav dej, thiab cov khoom siv. Lawv tuaj yeem tiv taus qhov kub thiab txias, kev kub ntxhov, thiab kev ntxhov siab txhua yam tam sim no nyob rau hauv lub zog - tiam puag ncig. Dacromet txheej tiv thaiv cov bolts thiab ceev los ntawm corrosion los ntawm chav, tshuaj, thiab lwm yam khoom, kom ntseeg tau lub sij hawm ntev txhim khu kev qha ua hauj lwm ntawm lub hwj chim - tiam khoom.
Offshore thiab Marine Engineering: Rau cov chaw ua haujlwm sab nrauv, nkoj, thiab kev teeb tsa hauv hiav txwv, qhov twg raug dej ntsev, cov av noo siab, thiab qhov chaw nyob hauv hiav txwv hnyav tsis tu ncua, cov bolts thiab cov txiv ntoo no muaj nuj nqis heev. Kev sib xyaw ua ke ntawm high-lub zog alloy steel thiab Dacromet galvanization ua rau lawv tuaj yeem tiv taus cov dej hiav txwv corrosive, tiv thaiv kev ua haujlwm tsis zoo vim corrosion. Lawv yog siv rau fastening ntau yam marine Cheebtsam, kom muaj kev ruaj ntseg thiab durability ntawm offshore thiab marine lug.
Exceptionally siab zog: Nrog Qib 8.8 thiab 10.9 lub zog ntsuas, cov bolts thiab txiv ntseej no muaj zog tensile thiab yield zog. Lawv tuaj yeem txuas cov qauv tsim thiab tiv taus cov khoom hnyav, kev vibrations, thiab shear rog, ua kom muaj kev ruaj ntseg thiab kev nyab xeeb ntawm cov qauv engineering hauv ntau yam kev thov.
Superior Corrosion Resistance: Dacromet galvanization muab kev tiv thaiv corrosion zoo heev, deb tshaj li ntawm cov txheej txheem galvanization. Qhov tshwj xeeb muaj pes tsawg leeg ntawm Dacromet txheej tsim cov yeeb yaj kiab tiv thaiv ntom ntom uas muaj txiaj ntsig zoo cais cov hlau hauv paus los ntawm ib puag ncig corrosive. Nws tuaj yeem tiv taus qhov yaig ntawm cov dej noo, ntsev, tshuaj lom neeg, thiab lwm yam khoom siv corrosive, ua rau lub neej ntev ntawm cov bolts thiab txiv ntseej piv rau cov khoom siv. Qhov no ua rau lawv tshwj xeeb tshaj yog haum rau siv nyob rau hauv hnyav ib puag ncig uas corrosion yog ib qho kev txhawj xeeb loj.
Txhim khu kev qha thiab ruaj ntseg fastening: Lub taub hau hex tsim ntawm cov bolts thiab cov txiv ntoo sib xws muab txoj hauv kev txhim khu kev qha thiab ruaj ntseg fastening. Cov duab hexagonal tso cai rau yooj yim zawm thiab loosening nrog wrenches lossis sockets, thiab cov xov zoo tsim kom muaj kev sib haum xeeb, muaj peev xwm tiv taus ntau hom kev siv tshuab. Kev sib xyaw ua ke ntawm cov khoom siv siab-lub zog thiab kev sib koom ua ke ntawm cov xov zoo kom ntseeg tau tias qhov fastening tseem muaj kev ruaj ntseg txawm tias nyob rau hauv huab cua.
Zoo Compatibility thiab Standardization: Cov bolts thiab txiv ntseej no ua raws li cov qauv thoob ntiaj teb thiab lub teb chaws, ua kom muaj kev sib raug zoo thoob plaws cov haujlwm sib txawv thiab kev lag luam. Cov txheej txheem qhov ntev thiab cov xov tshwj xeeb tso cai rau kev hloov pauv yooj yim thiab sib hloov, ua kom yooj yim rau kev yuav khoom, teeb tsa, thiab kev saib xyuas cov txheej txheem. Qhov kev tsim qauv no kuj txo qhov kev pheej hmoo ntawm kev ua yuam kev hauv kev sib dhos thiab txhim kho kev ua haujlwm tag nrho.
Long-term ruaj khov Performance: Los ntawm cov txheej txheem tsim khoom nruj, kev kho cua sov zoo, thiab cov txheej txheem Dacromet zoo, cov bolts thiab cov txiv ntseej tuav ruaj khov thiab tiv thaiv kev ua haujlwm ntev ntev. Lawv tuaj yeem ua haujlwm tau zoo nyob rau hauv ntau yam kev ua haujlwm nyuaj yam tsis muaj kev ua haujlwm tseem ceeb, txo cov nqi kho thiab txo qhov kev pheej hmoo ntawm kev poob siab. Qhov kev ruaj ntseg ntev ntev no yog qhov tseem ceeb rau kev ua haujlwm tsis tu ncua ntawm cov khoom siv tseem ceeb thiab cov khoom siv.
Environmentally Friendly: Piv nrog rau qee cov tshuaj tiv thaiv corrosion uas tuaj yeem tsim cov khoom tsis zoo, cov txheej txheem Dacromet yog ib puag ncig zoo. Nws muaj cov ntsiab lus ntawm cov hlau hnyav tsawg thiab tsis tsim cov khoom pov tseg ntau thaum lub sijhawm tsim khoom, ua tau raws li qhov yuav tsum tau ua ntawm kev tsim kho engineering niaj hnub rau kev tiv thaiv ib puag ncig thaum tseem muab kev ua haujlwm siab tiv thaiv corrosion.