1. Q: Peb xav tau ib lub yeeb nkab rau cov khoom siv dav dav xws li cov tes tuav thiab cov ncej. Tus nqi yog qhov tseem ceeb. Qib twg zoo tshaj?
A: ASTM A53 Qib B (ERW)yog qhov kev xaiv zoo tshaj plaws thiab kev lag luam rau cov uas tsis yog - cov kev siv cov txheej txheem tseem ceeb. Nws muaj qhov zoo weldability thiab lub zog rau kev siv dav.
2. Q: Rau siab - qhov kub thiab txias kev pab cuam nyob rau hauv lub hwj chim boiler boiler (txog 800℃F / 427 degree), uas seamless yeeb nkab qib peb yuav tsum tau qhia?
A: ASTM A106 Qib Byog tus qauv seamless yeeb nkab rau siab -kub kev pabcuam. Nws cov tshuaj muaj pes tsawg leeg (tshwj xeeb yog carbon, manganese, thiab silicon) ua kom lub zog thiab ruaj khov ntawm qhov kub siab.
3. Q: Qhov txawv ntawm ASTM A106 Qib A, B, thiab C yog dab tsi? Thaum twg peb yuav qhia Qib C?
A:Thawj qhov sib txawv yogyam tsawg kawg nkaus yield thiab tensile zog, uas nce los ntawm A rau C.Qib C(nrog cov ntsiab lus carbon siab dua) muab lub zog siab tshaj plaws thiab siv thaum muaj kev ntsuas siab dua lossis txo cov phab ntsa tuab yog xav tau rau tib lub siab, tab sis nws muaj me ntsis weldability.
4. Q: Peb tab tom tsim cov qauv kab ke rau lub tsev. Qhov twg hollow structural seem (HSS) qib muaj qhov zoo sib npaug ntawm lub zog thiab formability?
A: ASTM A500 Qib Cfeem ntau tau teev tseg rau welded HSS kab thiab cov tswv cuab. Nws muab siab dua qhov tsawg kawg nkaus lub zog (50 ksi) piv rau Qib B (46 ksi), tso cai rau kev sib zog, tsim kom muaj txiaj ntsig zoo.
5. Q: Peb qhov project xav tau cov kav dej rau cov roj thiab cov roj hauv ntug dej hiav txwv uas muaj qhov zoo heev tsawg - qhov kub thiab txias cuam tshuam rau qhov toughness. Qib twg raug yuam?
A: API 5L PSL2 Qib, xws li X52 lossis X65, nrog rau kev xeem Charpy V-Notch (CVN).PSL2 qhia meej txog cov tshuaj chemical, mechanical, thiab kev xeem yuav tsum nruj dua, nrog rau cov tawv nqaij ntawm qhov kub thiab txias (xws li -20℃lossis qis dua).
