Cov yam ntxwv thiab kev siv ntawm maraging steel

Cov qib sawv cev steel ntawm Maraging suav nrog:

022Ni18Co8Mo3TiA (Maraging 200)

022 Ni18Co8Mo5TiA (Maraging 250)

022Ni18Co9Mo5TiA (Maraging300)

00Ni18Co13Mo4TiA (Maraging350)

Maraging steel yog ib hom maraging steel. Cov ntsiab lus carbon hauv cov hlau yog tsawg. Cov ntsiab lus alloying uas ua lub luag haujlwm hauv kev laus hardening yog Ti, Al, Co thiab Mo. Impurities muaj kev cuam tshuam zoo rau cov khoom ntawm maraging steel, thiab cov nyhuv ntawm cov hlau uas muaj zog tawm los yog qhov pom tseeb dua. Qhov no xav kom cov hlau no yuav tsum tau smelted hauv lub tshuab nqus tsev kom txo tau impurities, cais thiab roj cov ntsiab lus nyob rau hauv lub ingot, thiaj li yuav xyuas kom meej tias cov hlau muaj zoo toughness thiab qaug zog kuj.

Hauv Maraging steel, carbon muaj qhov cuam tshuam zoo rau lub zog ntawm cov hlau. Txawm hais tias cov ntsiab lus carbon tsawg heev, nws yuav txhim kho lub zog ntawm martensite. Txawm li cas los xij, tom qab nce cov ntsiab lus carbon rau {{0}}.03 feem pua ​​​​, lub zog tawm ntawm cov hlau yuav raug txo, yog li cov ntsiab lus carbon hauv Maraging maraging steel yuav tsum tsis pub tshaj 0.03 feem pua.

S hauv Maraging steel yog teeb meem. S muaj nyob rau hauv cov hlau raws li sulfide thiab faib raws qhov kub dov kev taw qhia, ua rau anisotropy ntawm hlau, yog li nws yuav tsum tau txo cov sulfur cov ntsiab lus ntawm hlau ntau npaum li sai tau.

Ib tug loj npaum li cas ntawm Ni yog ntxiv rau Maraging steel los xyuas kom meej tias ib tug martensite yuav tsum tau tom qab cov khoom tov quenching, thiab cov nyhuv ntawm Ni ntawm Mo yog tsim rau cov laus zog theem Ni3Mo. Thaum cov feem loj ntawm Ni ntau tshaj 10 feem pua, cov pob txha toughness ntawm maraging steel kuj tuaj yeem txhim kho.

Tom qab kev daws teeb meem, Maraging steel cov ntaub ntawv ultra-low carbon martensite nrog hardness ntawm 28 ~ 30HRC; Tom qab kev laus kev kho mob, vim nag lossis daus ntawm ntau hom intermetallic tebchaw, lub hardness yuav nce mus rau 50HRC. Cov hlau no tseem muaj qhov zoo toughness thiab siab tawg toughness nyob rau hauv cov xwm txheej ntawm siab zog thiab toughness. Nyob rau tib lub sijhawm, cov hlau zoo li no tsis muaj kev ua haujlwm txias txias, me me deformation tom qab kev laus kho cua sov, zoo weldability, thiab nto kuj tuaj yeem raug nitrided.

Maraging low carbon maraging steel yog tsuas yog siv rau kev tsim cov khoom siv kho tshuab thiab cov pwm yas nrog kev ua haujlwm siab, super iav nto, txoj kab noj hniav, ntu loj thiab ntau lawm, tab sis nws siv yog txwv vim nws cov nqi tsim khoom siab.