Tuubada Biraha Kaarboon ee Wareega ah ee loogu talagalay Tuubada Khadka Biyaha
1. Fahmo tuubada birta kaarboon ee la isku qurxiyey ee wareegsan:
tuubo bir ah oo kaarboon ah oo wareegsanwaxaa loo sameeyay qaab wareegsan oo laga soo dheegay gariiradaha birta ah. Habka wax soo saarka ee gaarka ah wuxuu ka dhigayaa tuubooyinkan kuwo adag oo waara, awood u leh inay u adkaystaan cadaadis sare oo gudaha iyo dibadda ah. Awoodda looga hortago daxalka iyo isbeddelka ayaa sidoo kale ka dhigaysa mid ku habboon codsiyo badan, oo ay ku jiraan tuubooyinka biyaha iyo alxanka tuubooyinka birta ah.
| Heerka Caadiga ah | heerka birta | Halabuurka kiimikada | Sifooyinka jilicsanaanta | Tijaabada Saamaynta Charpy iyo Tijaabada Jeexitaanka Miisaanka Dhicista | ||||||||||||||
| C | Si | Mn | P | S | V | Nb | Ti | CEV4)(%) | Xoogga wax soo saarka Rt0.5 Mpa | Xoogga Laabista Rm Mpa | Rt0.5/ Rm | (L0=5.65 √ S0) Dheelitirka A% | ||||||
| ugu badan | ugu badan | ugu badan | ugu badan | ugu badan | ugu badan | ugu badan | ugu badan | Kale | ugu badan | daq | ugu badan | daq | ugu badan | ugu badan | daq | |||
| L245MB | 0.22 | 0.45 | 1.2 | 0.025 | 0.15 | 0.05 | 0.05 | 0.04 | 1) | 0.4 | 245 | 450 | 415 | 760 | 0.93 | 22 | Tijaabada saameynta Charpy: Tamarta nuugista saameynta ee jirka tuubooyinka iyo tolmada alxanka waa in la tijaabiyaa sida loogu baahan yahay heerka asalka ah. Wixii faahfaahin ah, fiiri heerka asalka ah. Tijaabada jeexitaanka miisaanka hoos u dhaca: Aagga xiirashada ikhtiyaariga ah | |
| GB/T9711-2011(PSL2) | L290MB | 0.22 | 0.45 | 1.3 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | 1) | 0.4 | 290 | 495 | 415 | 21 | |||
| L320MB | 0.22 | 0.45 | 1.3 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | 1) | 0.41 | 320 | 500 | 430 | 21 | ||||
| L360MB | 0.22 | 0.45 | 1.4 | 0.025 | 0.015 | 1) | 0.41 | 360 | 530 | 460 | 20 | |||||||
| L390MB | 0.22 | 0.45 | 1.4 | 0.025 | 0.15 | 1) | 0.41 | 390 | 545 | 490 | 20 | |||||||
| L415MB | 0.12 | 0.45 | 1.6 | 0.025 | 0.015 | 1)2)3 | 0.42 | 415 | 565 | 520 | 18 | |||||||
| L450MB | 0.12 | 0.45 | 1.6 | 0.025 | 0.015 | 1)2)3 | 0.43 | 450 | 600 | 535 | 18 | |||||||
| L485MB | 0.12 | 0.45 | 1.7 | 0.025 | 0.015 | 1)2)3 | 0.43 | 485 | 635 | 570 | 18 | |||||||
| L555MB | 0.12 | 0.45 | 1.85 | 0.025 | 0.015 | 1)2)3 | Gorgortanka | 555 | 705 | 625 | 825 | 0.95 | 18 | |||||
| Fiiro gaar ah: | ||||||||||||||||||
| 1) 0.015 ≤ Altot | ||||||||||||||||||
| 2)V+Nb+Ti ≤ 0.015% | ||||||||||||||||||
| 3) Dhammaan darajooyinka birta, Mo waxay noqon kartaa ≤ 0.35%, iyadoo qandaraas la galayo. | ||||||||||||||||||
| Mn Cr+Mo+V Cu+Ni 4) CEV=C+6+5+5 | ||||||||||||||||||
2. Tuubooyinka biyaha:
Nidaamyada qaybinta biyaha, bixinta biyaha nadiifka ah ee badbaadada iyo hufnaanta leh waa muhiim. Tuubada birta kaarboon ee la isku qurxiyey ee wareegsan ayaa la xaqiijiyay inay tahay doorasho lagu kalsoonaan karo oo loogu talagalay tuubooyinka biyaha sababtoo ah sifooyinka u adkaysta daxalka. Dusha siman ee tuubooyinkan waxay yareysaa is jiidjiidka, iyadoo hubinaysa socodka biyaha oo joogto ah iyo yareynta buuqa. Intaa waxaa dheer, xoogga iyo cimri dhererka dabiiciga ah waxay dammaanad qaadayaan ilaalinta daadashada, jabka, iyo cilladaha dhismaha, iyagoo hubinaya biyo joogto ah oo la isku halleyn karo.
3. Alxanka tuubooyinka birta ah:
Warshadaha alxanka waxay si weyn ugu tiirsan yihiin tuubooyinka birta kaarboon ee la isku dhejiyo ee loogu talagalay isticmaalka kala duwan. Xoogga iyo dabacsanaanta gaarka ah ee tuubooyinkan ayaa ka dhigaya kuwo ku habboon alxanka tuubooyinka birta ah. Hadday tahay dhisidda haamaha kaydinta ee waaweyn, dhuumaha lagu qaado saliidda iyo gaaska, ama qaybaha dhismaha ee goobaha warshadaha, tuubooyinka birta kaarboon ee la isku dhejiyo ee la isku dhejiyo ayaa door muhiim ah ka ciyaara. Midnimada isku-xidhka alxanka ayaa hubisa isku-kalsoonida iyo badbaadada qaab-dhismeedka, taasoo yaraynaysa baahida loo qabo dayactir ama dayactir joogto ah.
4. Faa'iidooyinka iyo faa'iidooyinka:
4.1 Xal kharash-ool ah: Tuubooyinka birta kaarboon ee la isku tolay ee wareegsan waxay bixiyaan xal kharash-ool ah oo loogu talagalay alxanka tuubooyinka biyaha iyo tuubooyinka birta ah. Waaradooda iyo iska caabbintooda daxalka waxay hubinayaan cimri dheer oo adeeg ah, sidaas darteedna waxay yareeyaan kharashyada beddelka iyo dayactirka.
4.2 Si Fudud Loo Rakibo: Tiknoolajiyada alxanka wareegsan ee loo isticmaalo habka wax soo saarka waxay soo saari kartaa tuubooyin dhaadheer oo joogto ah, taasoo yaraynaysa baahida loo qabo isku-xidhka soo noqnoqda. Naqshaddan fududaynaysa waxay fududaynaysaa habka rakibidda, iyadoo badbaadinaysa waqtiga iyo dadaalka.
4.3 Kala Duwanaansho: Tuubooyinka birta kaarboon ee la isku tolay ee wareegsan ayaa laga heli karaa dhexroor iyo dhumuc kala duwan, taasoo u oggolaanaysa in loo habeeyo codsiyo kala duwan. Waxaa loo habeyn karaa si ay u daboolaan shuruudaha mashruuca gaarka ah, iyagoo la qabsanaya dareere kala duwan, cadaadisyo iyo heerkul.
4.4 Ilaalinta deegaanka: Birta kaarboonku waa walax dib loo warshadayn karo oo gacan ka geysata waaritaanka deegaanka. Tuubooyinka birta kaarboonka ee wareegsan ee la isku tolay ayaa dib loo warshadayn karaa oo dib loo isticmaali karaa, taasoo yaraynaysa qashinka iyo ilaalinta kheyraadka dabiiciga ah.
Gunaanad ahaan:
Kartida iyo faa'iidooyinka tuubooyinka birta kaarboon ee la isku qurxiyey ee ku jira tuubada biyaha iyoalxanka tuubooyinka birta ahLama dhayalsan karo. Wareejinta hufan ee la isku halleyn karo ee biyaha iyo dareerayaasha warshadaha waxay si weyn ugu tiirsan tahay cimri dhererkooda, iska caabbinta daxalka iyo fududaynta rakibidda. Maadaama baahida loo qabo kaabayaasha dhaqaalaha ee xooggan oo kharash-ool ah ay sii kordheyso, tuubooyinka birta kaarboon ee la isku dhejiyay ee wareegsan ayaa sii ahaan doona qayb muhiim ah oo lagu hubinayo habsami u socodka nidaamyada biyaha iyo hababka warshadaha ee adduunka oo dhan.







