Phab ntsa tuab muaj qhov cuam tshuam ncaj qha rau qhov ntsuas siab ntawm API 5L L360 yeeb nkab. cov
Kev sib raug zoo ntawm phab ntsa thickness thiab siab
Muaj kev sib raug zoo ntawm phab ntsa tuab ntawm cov yeeb nkab steel thiab lub siab nws tuaj yeem tiv taus. Feem ntau, kev suav ntawm phab ntsa tuab thiab siab ntawm cov yeeb nkab steel tuaj yeem ua tau los ntawm cov qauv hauv qab no:
Phab ntsa thickness xam formula:
[ t=\frac{P \cdot D}{2 \cdot S \cdot E + P} ]
Qhov twg, (t) sawv cev rau qhov xav tau ntawm phab ntsa tuab ntawm cov yeeb nkab steel, (P) sawv cev rau qhov kev tso cai ua haujlwm siab, (D) sawv cev rau sab nraud ntawm cov yeeb nkab steel, (S) sawv cev rau thaj tsam ntawm cov yeeb nkab steel. , thiab (E) sawv cev rau elastic modulus ntawm cov khoom siv steel yeeb nkab.
Kev ntsuas ntsuas ntsuas:
[ P=2 \cdot S \cdot E \cdot t / (D - t)]
Qhov twg, (P) sawv cev rau qhov siab tshaj plaws uas cov yeeb nkab steel tuaj yeem tiv taus, (S) sawv cev rau thaj tsam ntawm cov yeeb nkab steel, (E) sawv cev rau qhov elastic modulus ntawm cov yeeb nkab steel, (t) sawv cev rau phab ntsa. thickness ntawm cov yeeb nkab steel, thiab (D) sawv cev rau sab nraud ntawm cov yeeb nkab steel.
Tshuaj muaj pes tsawg leeg thiab txhua yam khoom ntawm API 5L L360 kav
Cov tshuaj muaj pes tsawg leeg thiab txhua yam khoom ntawm API 5L L360 kav yog raws li nram no:
Cov tshuaj muaj pes tsawg leeg: carbon cov ntsiab lus tsis pub tshaj {{0}}.28% (seamless) los yog 0.26% (welded), manganese cov ntsiab lus tsis tshaj 1.40%, phosphorus ntsiab lus tsis tshaj {{10}}.030%, sulfur ntsiab lus tsis tshaj 0.030%, tooj liab cov ntsiab lus tsis tshaj 0.50%, nickel cov ntsiab lus tsis tshaj 0.50%, chromium cov ntsiab lus tsis tshaj 0.50%, thiab molybdenum cov ntsiab lus tsis tshaj 0.15%.
Mechanical zog: yield zog ≥360 MPa, tensile zog ≥460 MPa, elongation ≥1940 * AXC0.2/4600.9 .
Kev cuam tshuam hauv kev siv tswv yim
Hauv kev siv cov tswv yim, phab ntsa tuab ntawm cov yeeb nkab steel thiab lub siab nws tuaj yeem tiv taus yuav tsum tau txiav txim siab raws li cov qauv tsim tshwj xeeb thiab cov xwm txheej ntawm kev siv. Xyuas kom meej tias cov units ntawm lub cev muaj nuj nqis uas siv nyob rau hauv cov txheej txheem xam yog zoo ib yam kom tsis txhob muab xam yuam kev 1. Tsis tas li ntawd, cov phab ntsa tuab kuj tseem muaj qhov cuam tshuam loj rau lub peev xwm ntawm kev thauj khoom thiab kev siv cov yeeb nkab. Lub thickness ntawm phab ntsa thickness, lub zog load-bearing muaj peev xwm ntawm cov yeeb nkab, uas yog haum rau daim ntaub ntawv nrog ntau dua kev nyuaj siab thiab lub zog; thaum thinner phab ntsa thickness yog haum rau daim ntaub ntawv nrog tsawg zog thiab lub zog.
