Raws liNb / T 47014-2011, qeb naj npawb ntawm TA3 puag hlau yog TI-2.Nb / T 47014-2011 standard stipulates tias lub pob tw weld test piece welded nrog 6 hli tuab puag hlau tuaj yeem npog lub pob tw weld weldment nrog tuab tuab nrog lub hauv paus hlau thickness Ntau dua lossis sib npaug li 1.5 hli, tib lub sijhawm, cov khoom siv tsis muaj kev cuam tshuam rau kev xeem, yog li Kev ntsuam xyuas vuam ntawm 6 hli pob tw weld tuaj yeem npog lub pob tw weld nrog lub thickness ntawm lub hauv paus hlau ntawm 1.5 ~ 12 hli. Qhov siab tshaj plaws lub tog raj kheej thickness ntawm lub titanium siab hlab ntsha yog 10 hli thiab lub thinnest nozzle thickness yog 3.5 hli, tag nrho cov welded pob qij txha yuav tsum tau siv tungsten argon arc vuam. Yog li, raws li lub hauv paus ntsiab lus ntawm kev npog cov khoom siv ntau tshaj plaws nrog qhov tsawg kawg nkaus ntawm cov txheej txheem vuam tsim nyog, tag nrho cov khoom siv vuam vuam tuaj yeem ua tau raws li ntev npaum li ib lub pob tw vuam seam vuam txheej txheem tsim nyog nrog lub hauv paus hlau thickness ntawm 6 hli. yog ua.
Lub welded pob qij txha ntawm lub ntsiab lub cev ntawm cov khoom yog nyob rau hauv daim ntawv ntawm pa pob tw welds. Thaum lub sij hawm welding, cov txheej txheem vuam specification yuav tsum tau npaj raws li cov txheej txheem vuam txheej txheem tsim nyog. Lub manhole npog thiab nozzle flange npog yog tsim nrog 16Mn Ⅱ forging thiab TA3 hauv ob sab phlu. Feem ntau, lawv raug kho nrog cov ntsia hlau, thiab tom qab ntawd cov txheej txheem titanium thiab cov hlau tso rau ntawm cov ntsia hlau nto. Vim tias titanium thiab hlau tsis tuaj yeem fusion welded thiab tsis muaj txheej txheem hloov pauv, cov ntsia hlau tseem yog ua los ntawm cov khoom siv TA3, uas tsis xav tau kev txhawb nqa ntawm corrosion-resistant surfacing txheej txheem tsim nyog. Ntev npaum li lub pob tw vuam txheej txheem kev tsim nyog nrog lub hauv paus hlau tuab ntawm 6 hli tuaj yeem ua tau raws li cov txheej txheem ntawm kev sib koom ua ke. Lub sealing nto yuav tsum tau ua tiav tom qab lub phaj phaj thiab flange npog yog welded. Saib daim duab 1 rau qhov sib txuas welded.
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The manhole and connecting pipe shall adopt looper flange, and the stop shall be added on the connecting pipe, with the specification of 20mm × 20 mm × 6 mm, TA3 material, 2 stops for connecting pipes with DN ≤ 80 mm, and 4 stops for connecting pipes with DN >100 hli. Lub welded sib koom ua ke yog qhia hauv daim duab 2. Kev ua tiav ntawm lub sealing nto yuav tsum tau ua tom qab vuam ntawm lub nplhaib vuam nrog cov khoom siv tib yam li TA3.
JB / T 4745-2002 tus qauv xav kom cov hlab ntsha uas muaj qhov hnyav lossis siab toxicity, lossis cov hlab ntsha nruab nrab thiab siab siab nrog cov qauv tsim siab siab dua lossis sib npaug ntawm 1.6 MPa, yuav tsum tau npaj cov khoom siv vuam cov ntawv xeem raws li kev teeb tsa, yog li cov khoom siv tuaj yeem raug zam los ntawm cov khoom kuaj daim hlau.
