Daim ntawv thov dav thiab qhov tseem ceeb ntawmstainless hlau bolts lawv tus kheej ua pov thawj. Hauv kev lag luam ntsia liaj qhov rooj, stainless hlau bolts account rau ib feem loj, yog li nws yog ib qho tsim nyog los tsim thiab ua raws li cov qauv rau stainless hlau bolts. Kab lus no yuav muab cov ncauj lus qhia ntxaws ntxaws txog cov qauv, kev qhia tshwj xeeb, thiab cov qauv kev qhia tshwj xeeb rau stainless hlau bolts.
Standard rau stainless hlau bolts
Tus qauv rau stainless hlau bolts tuaj yeem xa mus rau tus qauv rau carbon steel bolts. Tshwj xeeb, raws li cov qauv thoob ntiaj teb xws li GB / T {{0}} thiab GB / T5782-2000, cov cuab yeej cuab tam qib code rau stainless hlau bolts thiab txiv ntseej yog A2-70 ({ {7}}r18Ni9); A4-70 (0Cr17Ni12Mo2).
Txheem rau stainless hlau bolts - Standard specifications
High zog steel boltthiab qib yog siv rau steel qauv nodes. Qhov kev qhia tshwj xeeb no suav nrog ob hom quenched thiab tempered alloy steel, siv rau hexagonal bolts loj hauv cov qauv, nrog lub zog tensile ntawm 1040-1210 MPa. Lub koom haum American ntawm Architectural thiab Industrial Fasteners Association tau pom zoo siv ASTM A325 thiab A 490 bolts rau steel qauv kev sib txuas, uas tuaj yeem siv rau kev tsim qauv.
Bolt specifications suav nrog txoj kab uas hla M12 txog M36. Lawv qhia cov hom los qhia cov tshuaj muaj pes tsawg leeg raws li hauv qab no: Hom 1 Medium carbon alloy steel. Qhov kev qhia tshwj xeeb no muaj feem xyuam rau kev siv ASTM A 325 thiab A 490 loj hexagonal structural bolts los ntawm Pawg Neeg Tshawb Fawb hauv nws cov qauv steel qauv specifications.
Cov qauv no tau teev tseg tias cov lus Askiv / phaus raug suav hais tias yog tib chav ntsuas. Tsis muaj lwm cov ntsuas ntsuas suav nrog hauv tus qauv. Cov qauv no tsis yog tsim los daws txhua yam kev nyab xeeb, thiab yog tias muaj, nws tsis cuam tshuam rau tus qauv no. Nws yog lub luag haujlwm ntawm cov neeg siv los txiav txim siab txog kev siv tau thiab kev txwv ntawm kev nyab xeeb thiab kev noj qab haus huv tsim nyog tsim los ntawm tus qauv no ua ntej siv.
American Society for Testing and Materials standard A325 yog ib qho kev kho cua sov uas muaj zog steel qauv bolt nrog lub zog tensile yam tsawg kawg nkaus ntawm 120/105 kilobars ib square inch. A 490 specification yog 10.9 thiab 10.9.3 high-strength bolts, uas yog siv rau steel qauv pob qij txha. A 563M Specification rau Carbon thiab Alloy Steel Ceev (Metric) yog A563M carbon thiab alloy steel ceev (metric). Cov txiv ntseej ua tau raws li qhov yuav tsum tau ua ntawm A563M specification thiab yog siv nrog rau qhov loj hexagonal ntsia liaj qhov rooj specification A 490M. Cov kev xav tau ntau yam ntawm cov txiv ntseej saum npoo yog raws li hauv qab no: Bolt Hom thiab Finish Bolt Hom Txiv Ntoo Chav Kawm thiab Finish Qhov kawg xaiv ntawm txiv ntoo.
Cov alloy lees paub los ntawm American Institute of Steel yog nyob rau hauv qhov siab tshaj plaws ntawm cov alloys. Cov ntsiab lus tshaj li ib lossis ntau qhov ntawm cov nram qab no: manganese, 1.65 feem pua. tooj liab, 0.60 feem pua ; Silicon, 0.60 feem pua; Los yog ib qho kev teev tseg nyob rau hauv ib qho kev txiav txim siab tsawg kawg nkaus kom muaj nuj nqis, yuav tsum muaj qhov sib ntxiv ntawm kev lees paub cov qauv hlau hlau, txhuas, chromium rau 3.99 feem pua, cobalt, kem, molybdenum, nickel titanium, tungsten, vanadium, zirconium, lossis lwm yam. alloying caij kom tau txais cov nyhuv alloying xav tau. M24, nrog rau txoj kab uas hla me me, muaj qhov ntev ntawm 21.4 D txog 2D, tab sis ua tsis tau. Kev ntsuas tensile yuav tsum tau ua los ntawm kev siv lub npoo los txiav txim siab qhov loj ntawm axial nro, thiab yuav tsum ua raws li qhov tsawg kawg nkaus tensile load thiab cov ntaub ntawv pov thawj, los yog cov ntaub ntawv pov thawj cov ntaub ntawv teev tseg hauv Table 4. Lub ntsia liaj qhov rooj muaj ib txoj kab uas hla me me thiab qhov ntev ntawm M24. luv dua 2D, uas yuav tsum tau raws li qhov hardness ntawm axial tensile xeem. Tom qab ua tiav cov hardness thiab nro cov kev ntsuam xyuas ntawm ob khub ntawm bolts raws li qhov yuav tsum tau, sau thawj qhov tsawg hardness nyeem ntawv uas tshwm sim. Lub hom phiaj ntawm qhov kev sim no yog txhawm rau ntsuas qhov muaj kev txiav txim siab ua tiav thiab tsis tiav decarburization thiab cov tub ntxhais hardness nyob ze ntawm qhov chaw sib txawv, thiab ua kom zoo rau lawv los txhim kho qhov zoo thiab kev ua haujlwm ntawm stainless hlau bolts.
Nyob rau hauv cov ntsiab lus, kev tsim thiab ua raws li cov qauv stainless hlau ntsia liaj qhov rooj yog qhov tseem ceeb los xyuas kom meej qhov zoo thiab kev ua tau zoo ntawm stainless hlau bolts, nrog rau kev ruaj ntseg ntawm kev siv thiab kev ruaj ntseg ntawm industrial infrastructure. Yog li ntawd, kev kawm, kev txawj ntse, thiab ua raws li cov qauv thiab cov kev qhia tshwj xeeb no yog ib txoj haujlwm tseem ceeb rau cov tuam txhab lag luam thiab cov koom haum cuam tshuam, muab cov neeg siv khoom zoo dua thiab txhim khu kev qha stainless hlau ntsia liaj qhov rooj.
