Yam ntxwv:
1. Seamless low carbon steel yeeb nkab yog cov hlau uas muaj cov pa roj carbon tsawg dua 0.25 feem pua. Nws tseem hu ua me me steel vim nws tsis tshua muaj zog, tsis tshua muaj hardness, thiab softness.
2. Cov qauv annealed ntawm seamless tsawg carbon steel yeeb nkab yog ferrite thiab ib tug me me ntawm pearlite, uas tsis muaj zog thiab hardness, thiab zoo plasticity thiab toughness.
3. Seamless low carbon steel yeeb nkab muaj qhov zoo txias formability thiab tuaj yeem txias tsim los ntawm crimping, dabtsi yog khoov, stamping, thiab lwm yam. 4.
Seamless tsawg carbon steel yeeb nkab muaj zoo weldability. Ib qho yooj yim los txais ntau yam kev ua xws li forging, vuam, thiab txiav.
Kev kho cua sov:
Seamless low carbon steel kav muaj qhov zoo ntawm kev laus, ob qho tib si txias thiab kev laus nyiam, nrog rau deformation thiab aging tendencies. Thaum cov hlau txias rau qhov kub siab, cov pa roj carbon thiab nitrogen hauv cov ferrite yog supersaturated, thiab cov pa roj carbon thiab nitrogen hauv cov hlau tuaj yeem maj mam tsim ntawm qhov kub thiab txias, kom lub zog thiab tawv ntawm cov hlau zoo tuaj, thiab ductility. thiab toughness yog txo. Qhov no tshwm sim yog hu ua extinction aging. Seamless low carbon steel kav yuav muaj cov nyhuv laus txawm tias lawv tsis quenched. Lub deformation ntawm seamless tsawg carbon steel kav tsim ib tug loj tus naj npawb ntawm dislocations. Cov pa roj carbon thiab nitrogen atoms hauv ferrite cuam tshuam elastically nrog cov dislocations, thiab cov carbon thiab nitrogen atoms sib sau ua ke nyob ib ncig ntawm cov kab dislocation. Qhov kev sib xyaw ua ke ntawm carbon thiab nitrogen atoms thiab cov kab dislocation yog hu ua Cochrane gas mass (Kelly gas mass). Ua kom lub zog thiab hardness ntawm steel thiab txo ductility thiab toughness. Qhov tshwm sim no hu ua strain aging. Txoj kev laus yog kev puas tsuaj rau cov ductility thiab toughness ntawm cov pa roj carbon tsawg dua li quench aging. Muaj cov ntsiab lus pom tseeb sab sauv thiab qis dua ntawm qhov tensile nkhaus rau qis carbon steel. Los ntawm cov txiaj ntsig sab saud mus rau qhov kawg ntawm qhov kev nthuav tawm, ib pawg ntawm cov pob zeb ntiav tsim rau ntawm cov qauv saum npoo vim qhov tsis sib xws yog hu ua Rydes siv. Muaj ntau qhov chaw stamping feem ntau muab pov tseg. Muaj ob txoj hauv kev los tiv thaiv nws. Txoj kev ua ntej deformation siab, cov hlau ua ntej deformation tau muab tso rau ib lub sijhawm, thiab Rudes purlin kuj tsim los ntawm stamping, yog li cov hlau ua ntej deformation yuav tsum tsis txhob muab tso rau ntev dhau ua ntej stamping. Lwm qhov yog ntxiv aluminium lossis titanium rau cov hlau los tsim cov khoom ruaj khov nrog nitrogen los tiv thaiv kev laus los ntawm kev tsim ntawm Kodak huab cua.
