Alxanka Tuubada Dabiiciga ah ee La Wareegay ee Wareega ah
Waayo,tuubo gaas dabiici ahs, badbaadada iyo isku halaynta ayaa ah kuwa ugu muhiimsan. Alxanka qaansada ayaa door muhiim ah ka ciyaara hubinta in tuubooyinkani ay u adkeysan karaan xaaladaha adag ee ay la kulmaan inta ay ku jiraan cimrigooda adeegga. Habka alxanka qaansada waxaa ku lug leh isticmaalka korontada si loo dhaliyo kulayl daran oo dhalaaliya cidhifyada tuubooyinka oo isku xira.
| 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. | ||||||||||||||||||
| 4) CEV=C+ Mn/6 + (Cr+Mo+V)/5 + (Cu+Ni)/5 | ||||||||||||||||||
Mid ka mid ah arrimaha muhiimka ah ee la tixgelinayo marka la isticmaalayo tuubooyinka gaaska dabiiciga ah ee alxanka waa nooca farsamada alxanka ee loo isticmaalo.tuubo silig ah oo wareegsans, habka ugu badan ee loo isticmaalo waa tiknoolajiyada alxanka arc-ka ee hoos yimaada (SAW). Tani waxay ku lug leedahay isticmaalka qulqulka granular-ka, kaas oo lagu shubo aagga alxanka si loo abuuro jawi ilaalin ah oo ka hortagaya oksaydhka iyo wasakhda kale inay saameeyaan alxanka. Tani waxay keentaa alxan tayo sare leh oo isku mid ah oo leh cillado yar.
Tixgelin kale oo muhiim ah marka la isticmaalayo tuubooyinka gaaska dabiiciga ah ee alxanka waa xulashada walxaha buuxinta alxanka. Qalabka buuxinta waxaa loo isticmaalaa in lagu buuxiyo meelaha banaan ama cilladaha ku jira alxanka, taasoo abuureysa isku xirnaan xooggan oo joogto ah. Tuubooyinka alxanka wareegsan, waa in la isticmaalaa qalab buuxin oo la jaanqaadaya heerka birta gaarka ah ee la isticmaalay iyo xaaladaha deegaanka ee dhuumaha la soo bandhigay. Tani waxay hubineysaa in alxanku uu u adkeysan karo cadaadiska iyo heerkulka ay la kulmaan tuubooyinka gaaska dabiiciga ah.
Marka laga soo tago dhinacyada farsamada ee alxanka arc, waxaa sidoo kale muhiim ah in la tixgeliyo aqoonta iyo khibradda alxanlaha qabanaya shaqada. Alxanka arc ee tuubooyinka gaaska dabiiciga ah waxay u baahan tahay xirfad iyo khibrad heer sare ah, iyo sidoo kale faham qoto dheer oo ku saabsan caqabadaha iyo shuruudaha gaarka ah ee shaqada. Waa muhiim in lala shaqeeyo alxanle khibrad leh oo shahaado haysta kuwaas oo si joogto ah u soo saari kara alxanle tayo sare leh oo buuxiya heerarka adag ee warshadaha.
Gunaanadkii, tuubada gaaska dabiiciga ah ee lagu dahaadho tuubo wareegsan waa qayb muhiim ah oo ka mid ah warshadaha dhuumaha. Waxay u baahan tahay tixgelin taxaddar leh oo ku saabsan farsamooyinka alxanka, agabka buuxinta, iyo aqoonta alxanka qabanaya shaqada. Iyadoo la hubinayo in arrimahan ay helaan dareenka ay mudan yihiin, waxay suurtogal noqon doontaa in la abuuro tuubooyin gaas dabiici ah oo buuxiya shuruudaha warshadaha ee badbaadada, isku halaynta iyo waxqabadka muddada dheer.







