Spc Tshuaj Siv Tshuaj
Nyob rau hauv cov ntaub ntawv cov ntaub ntawv, Spcc tsis yog tshuaj lom neeg, tab sis theej qhov tsim rau cov ntawv Japanese, feem ntau yog xa mus rau "General} Tus kab mob hlau thiab sawb." Nws lub npe tau txais los ntawm cov tsiaj ntawv luv ntawm "steel phaj txias txias coj mus muag." Nws cov tshuaj lom neeg muaj pes tsawg leeg yog feem ntau hlau (FE), nrog me me ntawm cov pa roj carbon (c) thiab lwm yam tsis txaus ntseeg (xws li manganese, siosphorus, thiab leej faj). Nws ntog nyob rau hauv qeb ntawm carbon qauv hlau.
Spcc lub ntsiab lus tseem ceeb thiab kev sib xyaw ua ke (xa mus rau JIELDING JIS cov qauv):
Hlau (FE): Nws muaj cov ntsiab lus siab tshaj plaws, feem ntau tshaj li 99%. Nws yog ib qho theem matrix hauv cov hlau thiab txiav txim siab nws cov khoom siv yooj yim (xws li lub zog thiab tawv).
Cov pa roj carbon (c): nws cov ntsiab lus feem ntau tsawg dua lossis sib npaug rau 0.15%. Cov ntsiab lus carbon cuam tshuam rau cov hlau lub hardness thiab ua haujlwm. Nws cov ntsiab lus carbon qis muab SPRC cov planity zoo heev thiab weldability, ua rau nws haum rau kev txias ua (xws li stamping thiab dabtsi yog khoov). Manganese (MN): Feem ntau tsawg dua lossis sib luag rau 0.50%. Manganese nce lub zog thiab tawv ntawm cov hlau, thaum tseem tab tom txhim kho cov khoom lag luam txias.
Phosphorus (p): tsawg dua lossis sib npaug rau 0.035%. Phosphorus yog kev cuam tshuam impfied. Cov qib ntau dhau los tuaj yeem nce tus brittleness ntawm cov hlau (txias brittleness), yog li nws cov ntsiab lus yuav tsum tau nruj me ntsis tswj.
Sulphur (s): tsawg dua los yog sib npaug rau 0.035%. Sulfur kuj yog lub impful. Qib qib ntau dhau tuaj yeem nce tus britleness ntawm cov hlau thaum lub sijhawm kub (kub brittleness), yog li nws cov ntsiab lus yuav tsum tau txwv.
Ntsiab lus:
Spcc yog qauv tsim qauv rau qis -} cov ntawv cold cabon txias}}} rolled steel ntawv, tsis yog tshuaj lom neeg. Nws thawj qhov muaj pes tsawg leeg yog hlau, nrog cov pa roj carbon ntau thiab lwm yam kab. Vim nws cov khoom txias heev txias, nws yog dav siv hauv cov khoom lag luam hauv cov lag luam, cov khoom siv kho vajtse, cov khoom siv kho vajtse, thiab lwm thaj teb.