1. Lub Tswv Yim
Ib lub ntsia hlau hexagonal sab nraud yog ib qho khoom siv hlau, tseem hu ua lub ntsia hlau hexagonal sab nraud, lub ntsia hlau hexagonal sab nraud lossis lub ntsia hlau hexagonal sab nraud.

2. Kev kho qhov chaw
Hauv cov txheej txheem tsim cov ntsia hlau, kev kho qhov chaw yog ib qho tseem ceeb uas yuav tsum tau ua. Nws tuaj yeem ua rau qhov chaw ntawm lub ntsia hlau ua tau raws li qee qhov yuav tsum tau ua thiab txhim kho nws txoj kev tiv thaiv corrosion, lub zog thiab kev zoo nkauj.
Muaj ntau hom kev kho qhov chaw rau bolts, cov feem ntau yog raws li nram no:
Galvanizing: Cov bolts raug raus rau hauv cov kua zinc, thiab cov zinc yog coated rau ntawm qhov chaw ntawm cov bolts txheej los ntawm txheej los ntawm kev tshuaj ntsuam electrochemical, ua rau lawv xeb-pov thawj thiab corrosion-resistant.
Kub-dip galvanizing: Tom qab cov bolts raug tsim, lawv raug raus rau hauv cov kua zinc molten, thiab ib txheej zinc yog tsim rau ntawm qhov chaw los ntawm kev tshuaj lom neeg kom ua tiav kev tiv thaiv xeb, tiv taus corrosion thiab lwm yam teebmeem.
Kev kho kom dub: Ib zaj duab xis hlau dub oxide yog tsim rau ntawm qhov chaw ntawm lub ntsia hlau los ntawm kev tshuaj lom neeg los txhim kho nws txoj kev tiv thaiv corrosion.
Kev kho phosphate: Muab lub bolt tsau rau hauv cov kua phosphating los tsim cov zaj duab xis phosphating rau ntawm qhov chaw kom txhim kho nws txoj kev tiv thaiv corrosion.
Kev kho kom tawv: Los ntawm kev kho cua sov lossis kev txau rau saum npoo, ib txheej txheej uas muaj qhov tawv dua yog tsim rau ntawm qhov chaw ntawm lub ntsia hlau kom txhim kho nws lub zog thiab kev tiv thaiv kev hnav.
Cov saum toj no yog cov txheej txheem kho qhov chaw ntawm lub ntsia hlau. Cov txheej txheem kho sib txawv sib haum rau cov xwm txheej siv thiab cov kev cai sib txawv. Thaum ua kev kho qhov chaw ntawm lub ntsia hlau, nws yuav tsum tau ua raws li cov qauv thiab cov lus qhia kom ntseeg tau tias cov ntsia hlau kho tau ua raws li cov kev cai ua tau zoo.

3. Kev ua tau zoo ntawm theem
Daim ntawv lo rau qib kev ua tau zoo ntawm lub ntsia hlau sab nraud hexagonal muaj ob ntu ntawm cov lej, uas feem ntau sawv cev rau tus nqi zog tensile nominal thiab qhov piv ntawm lub zog ntawm cov khoom siv ntsia hlau.
Piv txwv li, ib lub ntsia hlau uas muaj qib kev ua tau zoo 4.6 txhais tau tias:
a. Lub zog tensile nominal ntawm cov khoom siv bolt ncav cuag 400MPa;
b. Qhov piv ntawm cov khoom siv ntsia hlau thiab lub zog ntawm cov khoom siv ntsia hlau yog 0.6;
c. Lub zog nominal ntawm cov khoom siv bolt ncav cuag 400 × 0.6 = 240MPa theem
Kev ua tau zoo theem 10.9 lub zog siab bolts, tom qab kev kho cua sov, tuaj yeem ua tiav:
a. Lub zog tensile nominal ntawm cov khoom siv bolt ncav cuag 1000MPa;
b. Lub zog nominal ntawm cov khoom siv bolt ncav cuag 1000 × 0.9 = 900MPa.

4. Qhov sib txawv ntawm cov ntsia hlau sab nraud hexagonal thiab cov ntsia hlau sab nraud hexagonal muaj zog heev
Cov ntsia hlau hexagonal ib txwm siv tau, tab sis cov ntsia hlau muaj zog siab siv tsis tau.
Cov ntsia hlau muaj zog feem ntau yog ua los ntawm cov hlau muaj zog No. 45 (8.8s), 20MmTiB (10.9S), thiab yog cov ntsia hlau prestressed. Rau cov hom kev sib txhuam, siv lub wrench torque los siv cov prestress tshwj xeeb, thiab rau cov hom kev tuav siab, unscrew lub taub hau torx. Cov ntsia hlau ib txwm feem ntau yog ua los ntawm cov hlau ib txwm (Q235) thiab tsuas yog yuav tsum tau nruj.
Cov ntsia hlau ib txwm muaj feem ntau yog qib 4.4, qib 4.8, qib 5.6 thiab qib 8.8. Cov ntsia hlau muaj zog siab feem ntau yog qib 8.8 thiab qib 10.9, nrog rau qib 10.9 yog qhov feem ntau.
Cov qhov ntsia hlau ntawm cov bolts ib txwm tsis tas yuav loj dua li cov bolts muaj zog heev. Qhov tseeb, cov qhov bolt ib txwm me me.