20CrMnSi Alloy Steel Bar GB/T 3077-1999
1. Ferrous hlau, hlau thiab non-ferrous hlau
Ua ntej qhia txog kev faib cov hlau, cia peb luv luv qhia cov ntsiab lus ntawm cov hlau ferrous, hlau thiab cov hlau tsis muaj hlau.
1. Ferrous hlau hais txog hlau thiab hlau alloys. Xws li steel, npua hlau alloy, cam khwb cia hlau, thiab lwm yam. Hlau thiab npua hlau yog hlau-raws li alloys nrog carbon raws li lub ntsiab ntxiv ntsiab, collectively hu ua hlau -carbon alloys. Npua hlau yog hais txog cov khoom ntawm hlau ore smelted nyob rau hauv lub moj tej tawg rauv, feem ntau yog siv los ua hlau thiab ua castings. Molten npua hlau yog melted nyob rau hauv ib tug hlau melting rauv, uas yog, cam khwb cia hlau (kua) yog tau, thiab kua cam khwb cia hlau yog melted rau hauv castings, uas yog hu ua cam khwb cia hlau qhov chaw.
Ferroalloy yog ib qho hlau uas muaj hlau thiab silicon, manganese, chromium, titanium thiab lwm yam khoom, ferroalloy yog ib qho ntawm cov khoom siv raw ntawm steel manufacturing, nyob rau hauv steel manufacturing li steel deoxidizer thiab alloying ntsiab additives.
2. Muab cov npua hlau rau cov hlau ua rau hauv lub qhov cub steel thiab yaj nws raws li ib qho txheej txheem, uas yog, cov hlau tau txais. Cov khoom siv hlau muaj xws li steel ingots, nruam casting billets thiab ncaj qha casting ntawm ntau yam steel castings. Feem ntau hu ua steel, nws feem ntau yog hais txog steel dov rau hauv ntau yam steels. Hlau yog cov hlau ferrous, tab sis steel tsis zoo ib yam li ferrous hlau.
3. Cov hlau tsis muaj hlau, tseem hu ua cov hlau tsis muaj hlau, xa mus rau cov hlau thiab cov hlau tsis muaj hlau, xws li tooj liab, tin, txhuas, zinc, txhuas, tooj dag, tooj liab, txhuas alloys thiab bearing alloys. Tsis tas li ntawd, chromium, npib tsib xee, manganese, molybdenum, cobalt, vanadium, tungsten, titanium, thiab lwm yam kuj siv nyob rau hauv kev lag luam, cov hlau no tsuas yog siv los ua alloy additives los txhim kho cov kev ua tau zoo ntawm cov hlau, uas tungsten, titanium, molybdenum thiab lwm yam tungsten, molybdenum, cement thiab lwm yam khoom. Cov hlau uas tsis yog-ferrous no yog hu ua cov hlau ua lag luam, nrog rau cov hlau tseem ceeb: platinum, kub, nyiaj thiab lwm yam hlau tsis tshua muaj, nrog rau cov xov tooj cua uranium, radium, thiab lwm yam.
