Lub kaum sab xis stuffions: ib tag nrho - txheej txheem kev tsom xam los ntawm kev xaiv

Lub kaum ntse ntse, qhov tseem ceeb siv profile hauv kev lag luam steel, kev tsim khoom, ua tsaug rau Axial load - kev sib txuas nrog cov kabmob sib txuas thiab cov kev sib txuas nrog cov kabmob sib txuas.

Txawm li cas los xij, nrog rau kev nce zuj zus ntawm engineering scenarios (xws li ntev} kev xaiv cov khoom siv, thiab xaiv tsis zoo, kev sib txuas tsis txaus, thiab tsis txaus ntseeg. Kab lus no, raws li kev siv tshuab ua haujlwm, kev daws teeb meem tag nrho, kev tsim qauv, kev ua haujlwm zoo, kev tiv thaiv kev txhim kho, thiab kev tsim kho corrosion thiab txij nkawm. Txoj kev no lub hom phiaj los muab cov txheej txheem siv ua haujlwm rau cov kws tshaj lij kev ua tshuab.

 

I. Kev xaiv qhov tseeb: txuam nrog cov khoom siv kho tshuab nrog cov xwm txheej yuav tsum muaj
Lub kaum sab xis xaiv yog qhov pib lub ntsiab lus rau kev daws teeb meem, xav tau kev txiav txim siab ntawm peb cov yam ntxwv tseem ceeb, thiab kev txwv tsis pub ua haujlwm. First, according to the GB/T 706-2016 "Hot-rolled Steel" standard, angle steel specifications are defined by side length (mm) and thickness (mm) (eg, L50×5 represents an equal-leg angle with a side length of 50mm and a thickness of 5mm). Cov kev sib txawv sib piv rau ntu sib txawv (W) thiab lub sijhawm ntawm inertia (i) {13 {13 {13 {13} Piv txwv li, rau kev txhawb nqa bar nqaj-hom kev pab txhawb nqa ua ntej, thiab ib qho kev ntxhov siab uas tau txais nyiaj, feem ntau 145 MPA rau Q235 MREE) yuav tsum tau xaiv. Rau cov node constormors, tswjfolling deformation vim yog lub sij hawm inertia yog qhov tseem ceeb tshaj plaws (piv txwv li, ntau dua lossis sib npaug ntawm 150 kom ntseeg tau tag nrho ruaj khov).
Thib ob, cov khoom siv yuav tsum raug xaiv kom haum rau ib puag ncig ib puag ncig. Hauv cov phiaj xwm kev ua pa, Q235B cov hlau qauv roj hmab yog qhov kev xaiv uas nyiam tshaj plaws (suav rau ntau dua 70%) vim nws tus nqi qis thiab yooj yim ntawm kev ua. Txawm li cas los xij, nws corrosion tsis muaj zog yog tsis muaj zog (txhua xyoo Corrosion tus nqi ntawm kwv yees li ntawm ib puag ncig nrog cov ntsev ntawm ntug dej hiav txwv lossis tshuaj acid acid mistic. Yog tias qhov kev pabcuam ib puag ncig muaj tus nqi pH hauv qab 5 lossis cov tshuaj pleev ib ce ntxiv rau ntawm Q355, nws yog ib qho ntxiv rau Corranized Txheej Txheem (nrog rau Corrosing Galvanized ntau dua lossis sib npaug rau 80μm tuab tuaj yeem tiv thaiv tus Substrate rau ntau tshaj 20 xyoo). Tsis tas li ntawd, rau cov ntawv thov tshwj xeeb xws li cov khoom siv tsawg dua (Q235D qib kev cuam tshuam loj dua los yog sib luag rau kev pheej hmoo ntawm brittle back decacure.

 

Ii. Kev Ua: Qhov kev paub tseeb zoo los ntawm cov khoom siv nyoos rau cov khoom siv
Kev ua kom zoo ntawm kaum steel ncaj cuam tshuam nws load - cov kabmob ntseeg tau. Cov kauj ruam tseem ceeb suav nrog kev txiav, ncaj, thiab saum npoo pretreatment. Cov txheej txheem txiav yuav tsum tau xaiv raws li cov txheej txheem txuas txuas ntxiv. Rau vuam, ntshav txiav lossis precision kev pom zoo (txiav rougness Ra tsawg dua los yog sib npaug ntawm 6.3μm kom tsis txhob cuam tshuam rau Weld lub zog). Rau bolted sib txuas, pom lossis nplaim taws txiav yog nyiam (tab sis cov cua sov- cuam tshuam thaj chaw dav yuav tsum khaws cia hauv qis dua 2 hli kom tiv thaiv cov haujlwm kom tawv nqaij tawv). Rau kev tshwj xeeb - duab cov ces kaum (xws li node cov khoom siv sib npaug), CNC DEGREE DAGE DIVER INTERTANCE NROG RAU LUB CAIJ NTUJ NO).

Ncaj chaw nyob feem ntau chaw nyob deformations (xws li tom qab khoov thiab sib ntswg) uas tshwm sim thaum lub sijhawm thauj mus los lossis khaws cia. Me deformation tuaj yeem kho tau siv lub tshuab ua kom txias Kev tiv thaiv kev hnyav yuav tsum muaj cua sov hauv zos (tswj hwm ntawm 600 {} 800℃kom tsis txhob muaj kev tiv thaiv thiab grain coarsening) ua raws li rauj rau qib. Kev ua haujlwm saum npoo av yog qhov tseem ceeb rau kev tiv thaiv corrosion thiab sib koom ua ke tsim: ua ntej vuam, siv lub ntsej muag sib txuas thiab roj (huv si rau sa 2.5). Bolted sib koom tes yuav tsum sandblasting (roughness ra ntau dua lossis sib npaug,}, ov}

 

III. Kev sib txuas ua kom zoo: ib qho kev daws teeb meem uas cov hluav taws xob muaj zog thiab kev saib xyuas
Txoj kev sib txuas rau lub kaum sab xis steel ncaj qha cuam tshuam kev ruaj ntseg ntawm cov txheej txheem tag nrho. Cov hau kev uas muaj xws li vuam, bolting, thiab sib txuas sib txuas, thiab kev xaiv yuav tsum yog raws li cov hom load thiab kev saib xyuas.

(I) vuam: haum rau mus tas li, siab - lub zog pob qij txha
VUAM VUAM yog feem ntau siv txoj kev sib txuas rau lub kaum sab xis (accounting rau kwv yees li 60%). Nws cov txiaj ntsig yog qhov khoob {{2} dawb thiab ruaj khov kev tswj hwm ntawm cov txheej txheem tsis yog yuav tsum tau zam tsis tau. Rau Q235 Steel Angle Steel, phau ntawv Arc Vuam nrog E43 series hluav taws xob tsis kam lees thiab haum rau huab hwm coj ntau lawm) yog qhov pom zoo. Cov ntsiab lus tswj tau muaj xws li: Weld sib npaug loj (HF) yuav tsum tau ntsib HF ntau dua lossis sib npaug ntawm cov tuab tuab ntawm cov tuab tuab ntawm cov tuab tuab ntawm cov thicker steel kom tiv thaiv kom tsis txhob hlawv - los ntawm; Lub vuam tam sim no (piv txwv li, 90- 120A rau E4315} Thaum multure-txheej vuam, cuam tshuam slag yuav tsum tau ntxuav thiab qhov kev cuam tshuam kub thiab kub nyob hauv qab no 200 degree. Tom qab kev kuaj kab ke weld
(II) bolted sib txuas: haum rau kev rho tawm lossis saib xyuas cov xwm txheej
Bolted connections (especially high-strength bolts of grade 8.8 or higher) are widely used in equipment supports that require regular maintenance, such as communication towers and photovoltaic racks. The core force transmission mechanism is friction (accounting for >70%), yog li kev npaj ntawm kev sib txuas saum npoo av yog qhov tseem ceeb: Tus neeg sib tiv tauj ntawm cov phiaj hlau yuav tsum yog cov xim sib xyaw (txhuam hniav nplua nuj. Muab ob npaug rau cov txiv ntoo los yog cov tshuab ntxhua khaub ncaws caij nplooj ntoos hlav yuav tsum tau siv los tiv thaiv kev loosesening thaum spricing lub steel. Kev teeb tsa yuav tsum ua raws li "thawj zaug zawm (50% tsim lub zog (100% tsim lub zog (100% Tsim Torque)}} zawm {{zawm. Rau siab - Cov khoom lag luam tseem ceeb (xws li ntau yam kev sib txuas lus tseem ceeb), kev sib txuas ntawm "
(III) Kev sib txuas lus hybrid: kev ua tau zoo ua raws li cov haujlwm ua haujlwm nyuaj
Nyob rau hauv av qeeg -} muaj ntau hom sib luag lossis cov chaw muaj kev ntseeg tau), qhov kev ntseeg tau ntawm txoj kev sib txuas ntawm ib txoj kev sib txuas yuav tsis txaus. Hauv cov xwm txheej no, ib txoj kev sib txuas hybrid ntawm "vuam Piv txwv li, hauv kev cable anchorage pob qij txha sib koom ua ke ntawm ib tug cross- Tus nqaj hlau, weld leg loj hf {{}} mm). Pawg ntawm M24 siab - Lub Zog Bolts (plaub ib pab pawg) kuj tseem tau nruab, ua kom muaj kev teeb tsa kev teeb tsa thaum txhim kho lub zog seismic zog.

 

IV. Anti {- Kev Tu Siab corrosion: Ib qho kev ntsuas tseem ceeb rau kev ncua neej
Corrosion tsis ua hauj lwm ntawm lub kaum sab xis rau 25% {}}}}}} 30% ntawm cov neeg Engineering, tshwj xeeb yog cov nroj tsuag hnyav xws li cov nroj tsuag tshuaj lom neeg. Kev kho corrosion corrosion yuav tsum ua raws li lub hauv paus ntsiab lus ntawm "tiv thaiv ua ntej, kho kom zoo dua":
• Ntev ntev- TSHUAJ TIV THAIV: Rau cov txheej txheem sab nraum zoov (Zinc leb Polyurethane Topcoat (Tas Nrho Thickness Ntau dua lossis sib npaug rau 150μm) yog qhov kev nyiam.
• Kho Hauv Zos: Rau lub kaum ntse ntse nrog pitting (lub qhov tob ntxiv rau cov khoom siv hluav taws xob (ST3
• Saib xyuas thiab ceeb toom thaum ntxov: xws li linear Polarization Resourity nyob rau hauv lub sijhawm tseem ceeb (kev saib xyuas kev kho mob thaum i_corr> 10μha / cmo). Ua ke nrog drone kev tshuaj xyuas (siv infrared thermal thermal tsom kwm cov koob yees duab los txheeb xyuas thaj chaw ntawm txheej puas tuaj yeem ua tiav. Xaus.

Lub kaum ntse ntse, raws li lub tswv yim tivthaiv hauv kev tsim khoom, yuav tsum muaj cov kev daws teeb meem uas cuam tshuam nws lub neej tag nrho, los ntawm kev xaiv thiab kev xaiv thiab txij nkawm. Los ntawm cov kev sib txuam ua ntej yuav tsum muaj, kev ntseeg tau zoo thiab kev lag luam kev sib txuas ntawm lub kaum sab xis ua kom zoo dua. Nyob rau yav tom ntej, nrog kev nce qib ntawm kev ua kom nruj (xws li aluminium anyrothies (xws li cov kev ua kom zoo dua tshiab rau kev ua haujlwm siab thiab muaj ntau yam kev daws teeb meem zoo dua rau cov kev tsim tawm nyuaj.