Steel Structure Bolt Standards

Steel qauv boltcov qauv txawv txawv ntawm cov bolts zoo tib yam. Dab tsi yog qhov txawv? Cov qauv steel bolts puas tuaj yeem kub -dip galvanized zoo li cov bolts zoo tib yam? Peb yuav txheeb xyuas cov lus nug no ib los ntawm ib qho hauv qab no.

Ua ntej, cia peb saib nws cov qauv. Steel qauv bolts yog tsim nyob rau hauv raws li lub teb chaws tus qauv GB / T 1228. Cov qauv no qhia tau hais tias ib tug steel qauv bolt los ua ke muaj ib tug ntsia liaj qhov rooj, ob lub tiaj tus ntxhua khaub ncaws thiab ib tug txiv ntseej, yog li steel qauv bolts feem ntau yog muag raws li tiav poob lawm. Ntawm lawv, cov txiv ntoo sib txuam ua tau raws li GB / T 1229, thiab cov tshuab ntxhua khaub ncaws tiaj tus ua raws li GB / T 1230. Lub zog qib ntawm steel qauv bolts yog 10.9, cov txiv ntseej yog Qib 10, thiab cov ntxhua khaub ncaws tiaj tus yog ua los ntawm cov khoom siv ntxiv. Sib txawv ntawm cov tshuab ntxhua khaub ncaws zoo tib yam, lawv yog cov tuab dua. Bolts yuav tsum tau quenching thiab tempering kub kho ua ntej siv. Hauv lawv lub xeev qub tom qab kev kho cua sov, lawv muaj xim grey, nrog qhov nruab nrab ntawm Rockwell hardness (HRC) ntawm ib ncig ntawm 35. Nws yuav tsum tau muab sau tseg tias qhov no yog qhov nruab nrab tus nqi, thiab qhov hardness ntawm qhov sib txawv yuav txawv me ntsis.

Hauv kev sim tensile, steel qauv bolts tuaj yeem ua tiav lub peev xwm tensile tsawg kawg yog 600 kN, thiab lub zog nruj yuav tsum ua raws li cov qauv tsim (ceeb toom: torque unit yog N·m, tsis yog kN). Cov no yog cov yam tsawg kawg nkaus uas tau teev tseg hauv cov qauv hauv tebchaws, uas txhais tau hais tias qhov kev xeem tiag tiag yuav tsum tsis txhob qis dua cov nqi no. Thaum lub sij hawm installation, lub torque ncaj qha cuam tshuam lub firmness ntawm kev twb kev txuas. Lub zog torque ntau dhau tuaj yeem rub cov ntsia liaj qhov rooj, thaum lub zog qis qis yuav ua rau xoob. Yog li ntawd, steel qauv bolts yuav tsum tau muab ntsia siv tus qauv torque cuab yeej xws li torque wrenches los yog twist -tawm wrenches.

Qee zaum, peb yuav pom cov hlau tawgqauv boltsntawm qhov chaw tsim kho. Kev soj ntsuam kev tshaj lij qhia tau hais tias cov pob txha zoo li no tsis yog los ntawm kev kho cua sov tsis zoo, tab sis los ntawm cov khoom siv tsis xws luag. Thaum bolts muaj kev puas tsuaj rau saum npoo, asymmetric quab yuam daim ntawv thov thaum lub sij hawm nruj, ua ke nrog cov khoom tsis xws luag, yuav yooj yim ua rau bolt puas. Txawm li cas los xij, cov pob txha zoo li no tsis tshua muaj thiab yuav tsis ua rau loj - teeb meem zoo. Ua tib zoo ua ntej- kev tshuaj ntsuam xyuas ntawm txhua lub bolts tuaj yeem tiv thaiv cov xwm txheej zoo li no.

Steel Structure Bolts puas tuaj yeem kub -Dip Galvanized Zoo li Ordinary Bolts?

Lo lus nug no yuav tsum tau piav qhia los ntawm ntau yam. Ua ntej, steel qauv bolts yog siab - lub zog bolts, uas feem ntau tsis pom zoo rau kev kho saum npoo xws li kub-dip galvanizing lossis electrogalvanizing vim lawv qhov siab rhiab heev rau hydrogen embrittlement. Yog li ntawd, nyob rau hauv txoj cai, steel qauv bolts tsis haum rau kub -dip galvanizing. Tab sis yuav ua li cas yog tias kub -dip galvanizing yog qhov yuav tsum tau ua los ntawm tus tsim?

Hauv kev siv tswv yim, kub-dip galvanized steel qauv bolts yog siv rau ntau qhov xwm txheej, xws li kev sib txuas ntawm cov khoom siv hluav taws xob sab nraum zoov. Txhawm rau kom ntseeg tau qhov zoo ntawm cov qauv steel bolts thiab tiv thaiv kev puas tsuaj, kev tswj xyuas nruj yuav tsum tau ua thaum kub -dip galvanizing. Ua ntej, bolts yuav tsum tau kho cov txheej txheem fluxing ua ntej galvanizing. Cov kauj ruam no yog ib qho tseem ceeb heev - nws tshem tawm oxide nplai thiab cov roj stains ntawm lub ntsia liaj qhov rooj nto thiab txhim kho qhov adhesion ntawm zinc txheej thiab lub hauv paus hlau (tsis yog ua kom muaj zog tempering). Tom qab galvanizing, bolts yuav tsum tau tam sim ntawd raug tshem tawm hydrogen annealing: tso cov galvanized bolts nyob rau hauv qhov kub thiab txias qhov cub ntawm 190-230℃rau 2-4 teev kom cia hydrogen nyob rau hauv cov hlau matrix khiav, yog li tsis txhob hydrogen embrittlement. Nyob rau tib lub sijhawm, txheej txheem kub kub-dip galvanizing txheej txheem tuaj yeem ua kom ntseeg tau tias zinc txheej ntawm lub ntsia liaj qhov rooj yog qhov sib xws thiab tuab yam tsis muaj tev. Hauv cov ntsiab lus, steel qauv bolts tuaj yeem kub -dip galvanized, tab sis cov txheej txheem tsim khoom yuav tsum tau ua haujlwm nruj thiab ceev faj heev.

Cov txheej txheem kub -dip galvanizing rau kev sib txuam steel qauv txiv ntoo yog txawv ntawm cov txiv ntoo zoo tib yam. Vim qhov kev xav tau hloov pauv rau cov qauv steel txiv ntoo, feem ntau cov tuam ntxhab tsis khaws lawv hauv Tshuag ua ntej. Txhawm rau ua kom lub sijhawm xa tuaj raws sijhawm tau txais kev txiav txim, kev coj ua yog galvanize cov txiv ntoo blanks ua ntej thiab tom qab ntawd coj mus rhaub cov xov sab hauv siv lub tshuab threading. Raws li qhov tshwm sim, cov xov sab hauv ntawm cov qauv hlau tsis raug them los ntawm zinc txheej. Txawm li cas los xij, tsis tas yuav txhawj xeeb txog kev xeb, vim tias cov xov hauv lub qhov yog coated nrog cov roj tshwj xeeb los tiv thaiv - xeb.

Steel qauv bolts tseem hu uasteel qauv bolt sib dhos, uas feem ntau suav nrog ob hom: hexagonal taub hau hom thiab twist -tawm hom. Txhawm rau kom ntseeg tau tias kev ua tau zoo thiab ruaj khov ntawm cov bolts, tag nrho cov khoom nyob rau hauv ib qho kev sib dhos feem ntau yog tsim los ntawm tib batch ntawm raw cov ntaub ntawv thiab cua sov- kho nyob rau hauv tib lub cub tawg tom qab tsim. Hais txog qib kev ua tau zoo, Qib 10.9 yog qhov zoo tshaj plaws rau cov qauv steel bolts. Cov kev qhia tshwj xeeb ntawm cov qauv steel bolts feem ntau pib los ntawm M16 thiab xaus ntawm M30, uas yog lwm qhov sib txawv ntawm cov bolts zoo tib yam. Qhov sib txuam siab - cov txiv ntseej muaj zog muaj tus thawj coj qauv ntawm ib sab- thaum lub sijhawm teeb tsa, sab nrog tus thawj coj yuav tsum fim cov khoom sib txuas. Cov ntsiab lus no xav tau kev saib xyuas tshwj xeeb; Lwm cov txheej txheem kev teeb tsa yog qhov pib zoo ib yam li cov bolts zoo tib yam.

Steel qauv bolts tau raug muab tso rau hauv kev siv nyob rau hauv lub xyoo 1970s, thiab feem ntau thaum ntxov industrial Hoobkas tsev tau tsim siv cov bolts rau cov qauv kev sib txuas. Ua ntej muab tso rau hauv Suav teb, steel qauv bolts yog cov khoom lag luam patented txawv teb chaws, uas tsis tuaj yeem ncaj qha koom nrog hauv Suav teb cov qauv. Txawm hais tias ntau qhov kev tsim kho hauv tsev muaj qhov xav tau zoo rau cov qauv steel bolts, lawv tau txwv los ntawm patent teeb meem thiab tsuas tuaj yeem saib tsis muaj zog. Nrog rau kev txhim kho kev lag luam sai ntawm Tuam Tshoj, qhov kev thov rau steel qauv bolts tau nce vim loj -kev tsim kho vaj tse thiab kev lag luam tsis sib xws ntawm cov khoom lag luam. Lub caij no, ntau lub teb chaws tsim lawv tus kheej lub teb chaws cov qauv rau steel qauv bolts. Raws li qhov xav tau ntawm engineering tiag tiag, Tuam Tshoj tau hloov kho thiab kho cov qauv tsim nyog thiab thaum kawg tau muab cov qauv steel bolts rau hauv lub teb chaws tus qauv. Qhov no tau ua rau kev siv dav dav ntawm cov qauv steel bolts hauv Suav teb, muab kev ua si tag nrho rau lawv cov nqi tseem ceeb hauv kev sib txuas.

Hauv kev tsim cov qauv steel bolts, kev yuav khoom thiab kev sim cov ntaub ntawv raw yog raug tswj nruj. Ntau yam tshuaj muaj pes tsawg leeg thiab cov cuab yeej cuab tam yuav tsum raug txheeb xyuas los ntawm cov ntawv pov thawj kev xeem uas tau muab los ntawm thib peb - tog neeg soj ntsuam cov chaw ua ntej cov khoom siv raw tuaj yeem muab tso rau hauv kev tsim khoom. Cov cuab yeej tshwj xeeb yuav tsum muaj rau ntawm - qhov chaw teeb tsa ntawm cov qauv steel bolts. Tam sim no, lithium-ion roj teeb- lub zog hluav taws xob wrenches tau dav siv, thaum lub pneumatic wrenches thaum ntxov (uas yuav tsum muaj cua compressors) tau pib theem tawm. Yog vim li cas yog cov qauv steel bolts feem ntau yog siv nyob rau hauv cov chaw tsim kho sab nraum zoov, qhov chaw uas nws tsis yooj yim rau kev sib txuas cov cua compressors rau cov khoom siv hluav taws xob. Hauv qhov sib piv, lithium-Ion roj teeb- lub zog hluav taws xob wrenches yog qhov txav tau yooj yim thiab ua haujlwm tau zoo.

Cov txheej txheem ntau lawm ntawm steel qauv bolts yog raws li nram no: tom qab raw cov ntaub ntawv tuaj txog ntawm lub Hoobkas, lawv thawj undergo pickling kom tshem tawm cov nto oxide nplai thiab roj stains, ua raws li los ntawm phosphatization los ua ib tug ntom phosphate zaj duab xis ntawm cov khoom nto. Cov yeeb yaj kiab no tiv thaiv cov khoom puas thaum lub sijhawm ua haujlwm tom ntej thiab ua kom lub ntsej muag tiav ntawm bolts ua tau raws li qhov yuav tsum tau ua tom qab lub taub hau txias. Ua ntej machining, raw cov ntaub ntawv kuj yuav tsum tau undergo spheroidizing annealing thiab hlau kos duab. Yog tias cov khoom hardness siab dhau lawm, kev kho annealing ntxiv yuav tsum tau ua kom nws soften. Tom qab txias lub taub hau tsim, bolts raug rau quenching thiab tempering tshav kub kev kho mob los txhim kho lawv cov cuab yeej cuab tam thiab ua tiav qib 10.9 lub zog. Thaum kawg, tom qab nruj lub Hoobkas tshuaj xyuas thiab ntim, cov khoom tiav tuaj yeem xa tuaj rau cov neeg siv khoom.

Cov kev cai cia rau steel qauv bolts txawv ntawm cov bolts zoo tib yam - lawv yuav tsum tau muab cia rau hauv qhuav thiab plua plav- cov tsev khaws khoom dawb. Qhov no ua kom ntseeg tau tias thaum lub sijhawm teeb tsa, cov txiv ntseej tuaj yeem ua kom nrawm nrawm nrog bolt threads thiab yuav nruj nreem. Qhov sib txuam steel qauv tiaj tus ntxhua khaub ncaws yog ua los ntawm cov khoom siv tib yam li bolts. Yog tias kev teeb tsa sab nraum zoov yuav tsum tau ua rau hnub los nag, yuav tsum tau ua kom zoo los tiv thaiv kev ntsuas los tiv thaiv bolts, ceev thiab ntxhua khaub ncaws los ntawm xeb vim los nag. Tom qab bolts raug ntsia rau hauv qhov chaw, nws yog qhov zoo tshaj kom tsis txhob loosen los yog kho lawv yooj yim. Txawm hais tias steel qauv bolts tsis yog cov khoom siv pov tseg, rau lub hom phiaj ntawm kev sib txuas ruaj khov, nws raug nquahu kom nruab rau hauv qhov chaw hauv ib qho mus thiab siv lawv mus ntev - kev pabcuam.

Xav kom kuv pab kojrho tawm qhov tseem ceeb technical parameterntawm steel qauv bolts los ntawm no txhais lus rau ceev siv?