Steel 3: GOST, ligature thiab yam ntxwv

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

Nyob hauv kev lag luam niaj hnub no, ob peb qib steel yuav nrov li steel 3. Txawm hais tias nws tsis muaj cov khoom tshwj xeeb, txawm li cas los xij, nws tseem siv thoob ntiaj teb siv ntau ntau hauv txhua lub lag luam, txawm tias ib feem cuam tshuam nrog kev siv hlau thiab dov. cov khoom. Yog li qhov deal yog dab tsi?

Steel 3: GOST

Tau paub txog qhov cuam tshuam nrog GOST, nws tsis yooj yim los nrhiav txhua qhov kev nkag thiab tawm ntawm qib steel no. Txawm li cas los xij, rau koj qhov yooj yim, peb yuav rov hais dua me ntsis cov kev cai tseem ceeb ntawm GOST. Yog li steel 3 yog cov hlau tsis tshua muaj cov qauv hlau ntawm qhov zoo. Cov hlau no tau npaj rau kev tsim khoom ntawm ntau yam khoom los ntawm kub dov dov.

Ntxiv rau, GOST qhia cov npe raug ntawm cov qib steel thiab, raws li, piav qhia lawv cov kev txhais lus raug. Yog li, piv txwv li, steel 3 kev txaus siab rau peb, raws li GOST, tsuas yog hu ua St3, qhov twg:

• St - conditional abbreviation of the word "Steel".
• 3 - xaiv tus naj npawb ntawm cov qib steel.

Los ntawm txoj kev, muaj xya ntawm lawv hauv GOST:los ntawm xoom mus rau rau. Txhua chav tsev muaj qhov sib txawv ntawm cov tshuaj muaj pes tsawg leeg. Tsis tas li ntawd, txhua qib steel, nrog rau kev zam ntawm xoom, muab faib ua ob peb chav kawm, uas muaj lawv tus kheej tsim. Piv txwv li, G - qhia txog manganese thiab nws cov feem pua ntawm cov alloy, sib npaug li 0.80-0.15%.

Peb lub npe hauv qab no qhia txog qib ntawm deoxidation ntawm cov hlau:

• Kp - kub;
• Ps - ib nrab siab;
• Sp - calm.

Ligature

Muab rau cov hlau 3, cov yam ntxwv tseem ceeb yog tsim los ntawm kev ntxiv qee cov tshuaj lom neeg cov ntsiab lus rau nws cov muaj pes tsawg leeg, nws yuav tsis yog superfluous kom paub lawv cov ntsiab lus tseeb. Txawm li cas los xij, nws yuav tsum nkag siab tias, raws li GOST, steel 3 tau tsim nyob rau hauv tsib qhov sib txawv, sib txawv ntawm ib leeg hauv ligature, yog li nws ua rau kev txiav txim siab los tham txog txhua qhov muaj:

• St3sp yog tus yam ntxwv los ntawm kev sib xyaw ntawm 0.22% carbon, 0.30% silicon thiab 0.65% manganese.
• St3ps muaj cov ntsiab lus silicon qis - 0.15%.
• U St3kp ligature muaj pes tsawg leeg yog qhov tsis zoo hauv silicon - 0.05% siab tshaj, thiab manganese - 0.60%.

Qib plaub thiab qib tsib, raws li cov hlau 3 yog tsim, nkag mus rau hauv kev lag luam raws li "G", uas yog, nws muaj kev nce ntxiv, nyob rau hauv kev sib piv rau lwm cov alloys, qhov feem ntawm manganese cov ntsiab lus nyob rau hauv lub composition.. Tab sis qhov loj feem ntawm lwm yam ligature additives kuj raug hloov pauv:

• Yog li hauv St3Gps steel, feem pua ntawm cov pa roj carbon tseem tsis hloov pauv, feem pua ntawm silicon hauv cov hlau tseem nyobnyob rau hauv 0.15%, thiab manganese - mus txog 1.10%.
• St3Gsp qib steel yog tus cwj pwm los ntawm cov ntsiab lus carbon hauv 0.20% thiab silicon - los ntawm 0.30%.

Txawm li cas los xij, ntxiv rau lub ntsiab ligature muaj pes tsawg leeg, cov hlau muaj me me impurities ntawm chromium, tooj liab thiab npib tsib xee - 0.30% txhua, sulfur - 0.005%, nitrogen - 0.10% thiab phosphorus - 0.04%.

Steel 3: Yam ntxwv

Raws li lwm yam kev lag luam steel, Qib 3 steel tsis xav tau tshwj xeeb hardness, zoo li high-carbon tool alloys. Rau cov hlau, 3 lub ntsiab zoo yog suav tias yog:

• Corrosion resistant.
• Yooj yim ua cov khoom siv manually thiab mechanically.
• Unlimited weldability nrog ib yam ntawm cov muaj welding hom.
• Resistant rau txhua hom kev tsis xws luag sab hauv.

Nws yog cov khoom zoo uas tau ua hlau 3 yog ib lub npe nrov tshaj plaws niaj hnub no.