SA588 Qib A thiab B steel phaj sib txawv hauv lawv cov khoom siv kho tshuab thiab tshuaj lom neeg muaj pes tsawg leeg, nrog Qib B muaj lub zog qis dua qhov qis dua (65 ksi vs . 60 ksi) thiab qhov sib txawv me ntsis ntawm cov ntsiab lus alloying xws li tooj liab thiab chromium, uas tuaj yeem cuam tshuam rau weldability thiab corrosion kuj. Qib A yog qhov tsim nyog rau cov qauv siv dav dav, thaum Qib B yog qhov nyiam rau cov ntawv thov kom muaj zog dua thiab txias dua - huab cua toughness.
1. Tshuaj muaj pes tsawg leeg: Cov tshuaj muaj pes tsawg leeg ntawm ASTM SA588 Qib A steel phaj thiab ASTM SA588 Qib B steel phaj yog txawv. Cov ntsiab lus tooj liab nyob rau hauv Qib A steel daim hlau yog qhov tsawg, thaum cov ntsiab lus tooj liab hauv Qib B steel phaj yog qhov siab. Cov kev sib txawv no yuav muaj kev cuam tshuam rau corrosion kuj thiab txhua yam khoom.
2. Cov khoom siv kho tshuab: ASTM SA588 Qib B steel phaj muaj zog yield zog thiab tensile zog dua ASTM SA588 Qib A steel phaj. Qhov no txhais tau tias Qib B steel daim hlau muaj lub zog zoo dua thiab muaj zog dua thaum raug cov khoom loj dua.
3. Kev ua haujlwm dabtsi yog khoov: Vim muaj lub zog muaj zog ntawm ASTM SA588 Qib B steel daim hlau, preheating yuav tsum tau khoov nrog cov phaj tuab tuab thiab me me dabtsi yog khoov radii. Hauv kev sib piv, ASTM SA588 Qib A steel daim hlau muaj cov cuab yeej khoov yooj yim dua.
4. Daim ntawv thov: Txij li ASTM SA588 Qib B steel phaj muaj zog dua, nws feem ntau yog siv rau hauv cov qauv siv uas xav tau cov khoom siv zoo dua qub thiab cov cua tsis muaj zog, xws li txuas hniav, lub tsev plhaub, thiab lwm yam. ASTM SA588 Qib A steel phaj feem ntau siv rau kev siv cov qauv siv dav dav.
Nws yuav tsum raug sau tseg tias ob qho tib si ASTM SA588 Qib A thiab ASTM SA588 Qib B steel daim hlau muaj kev tiv thaiv corrosion zoo thiab kev tiv thaiv zoo thiab tsim nyog rau qhov chaw sab nraum zoov lossis raug pom. Thaum xaiv cov qib uas tsim nyog, kev txiav txim siab yuav tsum tau ua raws li cov kev xav tau tshwj xeeb ntawm qhov project thiab cov qauv tsim, thiab ua raws li cov qauv thiab cov kev qhia tshwj xeeb.
