Steel C245: GOST thiab cov yam ntxwv

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

C245 yog qib steel uas muaj nyob rau hauv chav kawm ntawm cov khoom siv hluav taws xob qis rau kev siv dav. Koj tuaj yeem ntsib nws ntawm cov chaw lag luam uas cuam tshuam nrog kev tsim cov qauv hlau ntawm ntau hom thiab lub hom phiaj.

Raws li GOST 27772-88, nyob rau hauv lub npe ntawm qib steel, tsab ntawv "C" sawv rau "Kev tsim kho", thiab cov lej hauv qab no qhia txog qhov kawg ntawm cov hlau, ntsuas hauv megapascals. Nws yog ib qho yooj yim los twv tias C245 steel yog npaj rau kev tsim khoom ntawm ntau yam khoom siv hlau los ntawm cov khoom zoo li tus thiab kub dov. Feem ntau qhov no yog:

• pob;
• I-beams.

Steel C245: GOST

Txawm hais tias C245 alloy tsis muaj cov khoom sib txawv, txawm li cas los xij, txawm tias zoo li yooj yim, txiav txim siab los ntawm nws txoj kev siv, steel muaj qhov sib xyaw ua ke kom meej meej hauv GOST. Nws, txawm li cas los xij, qee qhov cuam tshuam rau cov yam ntxwv ntawm cov khoom tsim tawm. Tias yog vim li cas koj yuav tsum paub meej tias dab tsi impurities muaj nyob rau hauv muaj pes tsawg leeg thiaj li yuav nkag siab zoo dua dab tsi C245 steel muaj peev xwm. Thiab nws muaj xws licov khoom xws li:

• Carbon yog qhov tseem ceeb tshaj ntxiv. Tom qab tag nrho, nws yog nws uas hloov cov hlau mos rau hauv cov hlau, ua rau nws nyuaj, tab sis yog li ua kom tsis muaj zog. Yog li ntawd, txhawm rau kom tswj tau qhov ductility, cov ntsiab lus carbon hauv C245 steel raug txwv rau 0.22%.
• Manganese yog ib qho ntawm cov khoom siv ntau tshaj plaws uas ua rau cov hlau tsis muaj zog rau ib puag ncig. Nws cov ntsiab lus tsis ntau tshaj 0.65%.
• Silicon, uas ua rau kom cov ductility ntawm cov hlau thiab txhim kho nws cov qauv sab hauv, muaj nyob rau hauv cov hlau ntau txog li 0.15%.
• Chromium yog ib qho kev sib xyaw ua ke uas ua rau cov hlau tsis kam tiv thaiv corrosion, thiab kuj nce zog me ntsis. Txawm li cas los xij, hauv C245 steel, cov ntsiab lus chromium raug txwv rau 0.30%, thiab yog li nws cov txiaj ntsig ntawm cov hlau tsis tseem ceeb.
• Nickel yog ib yam khoom uas muaj cov nyhuv nyuaj, vim nws ua rau kom muaj zog, ductility thiab corrosion kuj ntawm hlau ib zaug. Nws feem pua ntawm cov alloy yog sib npaug rau cov ntsiab lus ntawm chromium.
• tooj liab yog ib qho kev sib xyaw ua ke uas muaj nyob rau hauv feem ntau cov tsev steels thiab ua rau lawv tsis kam mus corrosion. Steel C245 muaj 0.30% tooj liab nyob rau hauv nws muaj pes tsawg leeg.

Ntxiv rau cov tshuaj ntxiv saum toj no, cov khoom xyaw muaj cov khoom tsis zoo ntawm leej faj thiab phosphorus. Txawm li cas los xij, lawv qhov cuam tshuam rau qhov zoo yog qhov tsis txaus ntseeg.

C245 specifications

Rau cov qauv hlau yam tsis muaj kev zam, cov ntsuas hauv qab no tseem yog qhov tseem ceeb:

• zog;
• weldability;
• resistance rauib puag ncig cuam tshuam.

Kev tshuaj xyuas ntawm txhua yam

Steel C245, feem ntau vim nws muaj pes tsawg leeg, tsis muaj qhov ntsuas lub zog zoo. Txawm li cas los xij, nws yuav tsum to taub tias cov kev cai no yeej tsis tau nthuav tawm rau nws. Nws lub hom phiaj ncaj qha yog ductile, uas ua rau nws muaj peev xwm tsim cov khoom tsim nyog los ntawm cov ntawv hlau los ntawm txias stamping, nrog rau kev khoov yooj yim. Rau cov khoom tuab, nws raug nquahu kom siv cov cua sov ntawm qhov quav.

C245 yog qhov kev xaiv zoo tshaj plaws rau cov qauv welded raws li qhov weldability ntawm cov hlau tsis muaj kev txwv thiab cov txiaj ntsig sib koom ua ke tsis ua rau muaj qhov tsis xws luag.

Hais txog kev tiv thaiv corrosion. Txij li thaum cov hlau muaj impurities ntawm npib tsib xee, chromium thiab tooj liab, tsis kam mus rau nws cov teebmeem yuav pom ntau dua. Qhov no tso cai rau koj khaws cov khoom lag luam steel rau lub sijhawm ntev yam tsis muaj teeb meem, tsis muaj kev cuam tshuam rau, piv txwv li, siv cov kua roj vanish / xim txheej. Txawm li cas los xij, rau kev khaws cia ntev, chav qhuav tseem zoo dua.