America Standard ASTM A588 Corten Steel Plate Piling ndi Structural Steel Truss Bridge

ASTM A588 imakwirira mawonekedwe achitsulo otsika kwambiri, mbale, ndi mipiringidzo yomangira zitsulo zonyezimira, zopindika, kapena zomangika koma zogwiritsidwa ntchito makamaka m'milatho yowotcherera ndi nyumba zomwe kusunga kulemera kapena kulimba kowonjezera ndikofunikira.

ASTM A588 ndi yamphamvu kwambiri yamphamvu yotsika yachitsulo yokhala ndi mphamvu zambiri komanso kukana kukana kwa dzimbiri mumlengalenga pamapangidwe achitsulo monga ngodya, njira ndi matabwa, komanso mbale yachitsulo ndi mipiringidzo.ASTM A588 imagwiritsidwa ntchito makamaka pa:
Milatho ya Oyenda Pansi
Highway Bridge Girders ndi zigawo zina za mlatho
Kupanga zombo
Matanki
Sitima zapanjanji ndi Zotengera
Mpanda
Zosema

Mafotokozedwe a A588 amapangidwa makamaka kuti agwiritsidwe ntchito osapentidwa, pomwe kupulumutsa kulemera kapena kulimba kowonjezera ndikofunikira komanso moyo wautali chifukwa cha zinthu zake zosagwirizana ndi dzimbiri komanso/kapena kuti ziwoneke bwino.

Kulimbana ndi dzimbiri mumlengalenga wa A588 ndikwabwinoko kuposa zitsulo za kaboni monga A36 ndi A572-50 zokhala ndi mkuwa kapena popanda kuwonjezera.Ikapangidwa bwino komanso kuwululidwa mumlengalenga, A588 ndiyoyenera kugwiritsa ntchito zambiri munjira yosapentidwa.

ASTM A588 ili ndi 50ksi mphamvu zokolola zochepa komanso 70ksi mphamvu yocheperako.

Gulu:
1. Chitsulo chapamwamba cha nyengo
Chitsulo chachitsulo cholimba kwambiri ndikuwonjezera pang'ono zamkuwa, phosphorous, chromium, ndi faifi tambala kuchitsulo kuti apange wosanjikiza woteteza pamwamba pa gulu lazitsulo kuti chitsulocho chizigwira bwino ntchito polimbana ndi dzimbiri mumlengalenga.Mukhozanso kuwonjezera pang'ono molybdenum, niobium, Zinthu monga vanadium, titaniyamu ndi zirconium zimatha kuyeretsa mbewu, kusintha makina achitsulo, kupititsa patsogolo mphamvu ndi kulimba kwachitsulo, kuchepetsa kutentha kwa kusintha kwamphamvu, ndikupangitsa kukana bwino kwa brittle fracture.
2. Weathering zitsulo kwa kuwotcherera dongosolo
Zinthu zomwe zimawonjezeredwa kumagulu achitsulo, kupatula phosphorous, ndizofanana ndi zitsulo zamapangidwe apamwamba a nyengo, ndipo ntchito zawo ndizofanana ndikuwongolera magwiridwe antchito.

Mawonekedwe:

Weathering zitsulo ali ndi makhalidwe a toughness, pulasitiki kutambasula, kupanga, kuwotcherera ndi kudula, kuvala kukana, kutentha kukana ndi kutopa kukana zitsulo apamwamba;kukana nyengo ndi 2-8 nthawi ya chitsulo wamba mpweya, ndi ❖ kuyanika ntchito ndi 1.5 wa zitsulo mpweya wamba.-10 nthawi, ❖ kuyanika ntchito ndi 1.5-10 nthawi ya chitsulo wamba mpweya, angagwiritsidwe ntchito ❖ kuyanika woonda, ❖ kuyanika kapena ❖ kuyanika chosavuta.Chitsulo ichi chimakhala ndi zotsutsana ndi dzimbiri, kukana kwa dzimbiri, moyo wautali, kupatulira ndi kuchepetsa kudya, kupulumutsa ntchito ndi kupulumutsa mphamvu, zomwe zimapindulitsa opanga zigawo ndi ogwiritsa ntchito.Weathering Chitsulo ali bwino dzimbiri kukana mu mlengalenga.Chitsulo cha nyengo chikhoza kuchepetsedwa, kuwululidwa kapena kungopenta.Dongosolo lachitsulo lokhala ndi kukana kwa dzimbiri, kukulitsa moyo, kupulumutsa ntchito, kuchepetsa kumwa ndi kukweza ndi njira yatsopano, ukadaulo watsopano komanso njira yatsopano yomwe ingaphatikizidwe muzitsulo zamakono, kuti ipitilize kukula ndikusintha.Chitsulo dongosolo.

Ubwino:

Chitsulo cha Weathering chimapangidwa ndi chitsulo wamba cha kaboni chokhala ndi zinthu zochepa zolimbana ndi dzimbiri monga mkuwa ndi faifi tambala.Iwo ali ndi makhalidwe a zitsulo mphamvu, ductility, kupanga, kuwotcherera, abrasion, kutentha, kutopa, etc.;Kukaniza kwanyengo ndi 2 ~ 8 yachitsulo cha kaboni wamba Kuchita zokutira ndi 1.5 ~ 10 nthawi ya chitsulo wamba wamba, chomwe chitha kugwiritsidwa ntchito popaka utoto wocheperako, wopanda kanthu kapena wosavuta.Chitsulocho chimakhala ndi zotsutsana ndi dzimbiri, kukana kwa dzimbiri ndi moyo wautali wa zigawo, kupatulira ndi kuchepetsa kudya, ndi kupulumutsa ntchito ndi kupulumutsa mphamvu, zomwe zimapindulitsa opanga zigawo ndi ogwiritsa ntchito.

Ntchito:

Kugwiritsiridwa ntchito kwa chitsulo cholimba kwambiri cha nyengo ndikwabwino kuposa chitsulo cholimbana ndi nyengo chomangika chifukwa cha kukana kwa dzimbiri mumlengalenga.Amagwiritsidwa ntchito kwambiri popangira ma bolting, ma riveting ndi kuwotcherera zida zamagalimoto, zotengera, nyumba, nsanja ndi zina.Mukagwiritsidwa ntchito ngati zigawo zomangika, makulidwe achitsulo sayenera kupitirira 16mm.Kuwotcherera zitsulo zanyengo zopangira zitsulo zowotcherera zimakhala bwino kuposa zitsulo zotentha kwambiri, ndipo zimagwiritsidwa ntchito kwambiri popanga zida zomangira milatho, nyumba ndi nyumba zina.