ABS DQ70 steel phaj yog cov khoom siv tshwj xeeb tsim los siv rau hauv kev tsim cov nkoj thiab cov qauv hauv hiav txwv. Cov qib siab - cov qib steel muaj zog zoo heev thiab cov khoom siv tshuaj lom neeg, ua rau lawv haum rau ntau yam kev siv dej hiav txwv
Hais txog cov tshuaj muaj pes tsawg leeg, ABS DQ70 steel daim hlau yog tsim nrog cov ntsiab lus alloying kom ntseeg tau tias kev ua haujlwm zoo. Cov ntsiab lus carbon yog ua tib zoo tswj kom muab lub zog tsim nyog yam tsis muaj kev cuam tshuam weldability. Lwm cov ntsiab lus alloying, xws li manganese, silicon, phosphorus, sulfur, npib tsib xee, chromium, molybdenum, tooj liab, niobium, vanadium, titanium, aluminium, boron, nitrogen, thiab calcium, yog ntxiv los txhim kho cov hlau cov cuab yeej cuab tam thiab corrosion kuj.
AB/DQ70 Ntxiv muaj zog tshuaj muaj pes tsawg leeg nyob rau hauv tempering thiab quenching | ||||||
Qib | Cov ntsiab lus Max (%) | |||||
C | Si | Mn | P | S | N | |
AB/DQ 70 | 0.20 | 0.55 | 1.7 | 0.030 | 0.030 | 0.02 |
Mechanically, cov hlau phaj no muaj lub zog tshwj xeeb thiab toughness. Cov qib ABS DQ70 yog tsim los ua kom tau raws li cov qauv nruj rau kev tawm dag zog thiab lub zog tensile, ua kom muaj kev ncaj ncees ntawm cov nkoj hauv hiav txwv. Tsis tas li ntawd, lawv muaj qhov zoo ductility thiab cuam tshuam tsis kam, ua rau lawv tiv taus qhov nruj ntawm thaj chaw marine.
AB / DQ70 Ntxiv cov khoom muaj zog ntxiv hauv tempering thiab quenching | ||||||
Qib | Mechanical Property | Charpy V Impact Test | ||||
Yield | Tensile | Elongation | Qib | Zog 1 | Zog 2 | |
Min Mpa | Mpa | Tsawg% | -20 | J | J | |
AB/DQ 70 | 690 | 770-940 | 14 | 41 | 62 | |
Lus Cim: Lub Zog 1 yog qhov kev ntsuas cuam tshuam, Lub Zog 2 yog qhov ntev | ||||||
Kev kho cua sov lub xeev ntawm ABS DQ70 steel daim hlau yog qhov tseem ceeb rau lawv cov kev ua tau zoo. Cov phaj no dhau los tswj cov cua sov thiab cua txias kom ua tiav qhov xav tau microstructure thiab txhua yam khoom. Qhov kev kho cua sov no txhim kho cov hlau qhov toughness, hardness, thiab tiv taus qaug zog thiab corrosion.
Kev ntsuam xyuas qhov cuam tshuam yog qhov tseem ceeb ntawm cov txheej txheem tswj kom zoo rau ABS DQ70 steel daim hlau. Cov kev ntsuam xyuas no ntsuas cov hlau muaj peev xwm tiv taus cov khoom thauj lossis kev cuam tshuam, simulating tej yam kev mob uas yuav tshwm sim nyob rau hauv marine ib puag ncig. Cov txiaj ntsig ntawm cov kev ntsuam xyuas no ua kom ntseeg tau tias cov ntawv hlau ua tau raws li cov qauv kev nyab xeeb nruj uas xav tau rau kev siv dej hiav txwv.
Thawj daim ntawv thov scenarios rau ABS DQ70 steel daim hlau suav nrog kev tsim cov hulls, decks, bulkheads, thiab lwm yam khoom siv ntawm cov nkoj thiab offshore platforms. Lawv lub zog siab thiab kev tiv thaiv corrosion ua rau lawv zoo tagnrho rau siv nyob rau hauv ob qho tib si dej qab zib thiab dej ntsev ib puag ncig.
