Nws yuav siv sij hawm ntau ua hauj lwm los tsim lub pob tw welding flanges, thiab vim hais tias loj taub qab vuam flanges muaj xws li cov nqi tsim khoom siab, preheating feem ntau tsim nyog. Lub deformation ntawm raw cov ntaub ntawv thiab cov txheej txheem deformation ntsig txog qhov kub thiab txias thiab cov yam ntxwv ntawm cov qauv lej yog hu ua computer simulation flange. Cov txheej txheem deformation no yog nqa tawm nrog kev pab ntawm lub computer simulation txhua lub sijhawm thaum lub xeev ntawm kev ntxhov siab, kev nyuaj siab, thiab qhov kub thiab txias. Computerized lub cev simulation thiab txheej txheem simulation tuaj yeem txhawb nqa thiab txhim kho ib leeg. Butt welding flanges yog siv zog ua, thiab preheating feem ntau yuav tsum tau vim yog tus nqi siab ntawm kev ua lub taub qab vuam flanges loj. Khoos phis tawj simulation flange yog lo lus siv los piav qhia txog yuav ua li cas cov ntaub ntawv raw deform raws li qhov kub thiab cov khoom siv ntawm cov qauv lej deform. Lub tshuab computer simulation yog siv los ua cov txheej txheem deformation no thaum twg cov xwm txheej ntawm kev ntxhov siab, kev nyuaj siab, thiab qhov kub thiab txias tau ntsib. Computerized txheej txheem simulation thiab lub cev simulation tuaj yeem tau txais txiaj ntsig los ntawm thiab ntxiv rau ib leeg.
European yeeb nkab flange system, uas suav nrog yav dhau los Soviet Union, yog sawv cev los ntawm German DIN, thiab American yeeb nkab flange system yog sawv cev los ntawm American ANSI yeeb nkab flange. Ob qho qauv no yog cov thawj coj siv thoob ntiaj teb. Japanese JIS raj flanges yog lwm qhov kev xaiv, txawm hais tias lawv cov kev cuam tshuam thoob ntiaj teb tsawg dua vim tias lawv feem ntau tsuas yog siv rau pej xeem ua haujlwm hauv cov chaw petrochemical. Cov hauv qab no yog cov ntsiab lus tseem ceeb ntawm cov yeeb nkab flanges siv hauv txhua lub tebchaws:
1.Lub teb chaws Yelemees thiab yav dhau los Soviet Union yog ob tug tswv cuab ntawm European system moj khaum.
2.The ANSI B16.5 thiab ANSI B 16.47 American system yeeb nkab flange qauv
3.Muaj cais cov qauv flange rau ob lub teb chaws cov yeeb nkab flanges.
Hauv kev xaus, ob qhov sib txawv thiab tsis hloov pauv cov yeeb nkab flange uas tsim cov txheej txheem thoob ntiaj teb ntawm cov yeeb nkab flanges yog raws li hauv qab no: European yeeb nkab flange system, sawv cev los ntawm lub teb chaws Yelemees; thiab ib qho American yeeb nkab flange system, sawv cev los ntawm Tebchaws Meskas.
Lub koom haum International rau Standardization tau luam tawm cov yeeb nkab flange tus qauv hu ua IOS7005-1 nyob rau hauv 1992. Cov qauv no muab cov qauv flange los ntawm lub teb chaws Yelemees thiab Tebchaws Meskas.
1.NPS: DN15-DN3000, 1/2 "-120"
2. Kev ntsuas siab: CL150-CL2500, PN2.5-PN420
3.Standard: EN, DIN, JIS, GOST, BS, GB
4. Khoom siv:
①Stainless hlau: 31254, 904 / L, 347 / H, 317 / L, 310S, 309, 316Ti, 321 / H, 304 / L, 304H, 316 / L, 316H
②DP Steel: UNS S31803, S32205, S32750, S32760
③ Alloy steel: N04400, N08800, N08810, N08811, N08825, N08020, N08031, N06600, N06625, N08926, N08031, N10276
