Tuubada alxanka leh ee Spiral Alxanka Tubooyinka Gaaska Dabiiciga ah
Waayodhuumaha gaaska dabiiciga ahs, badbaadada iyo isku halaynta ayaa ugu muhiimsan.Alxanka Arc wuxuu door muhiim ah ka ciyaaraa hubinta in tuubooyinkani ay u adkeysan karaan xaaladaha adag ee ay la kulmaan inta lagu jiro noloshooda adeeg.Habka alxanka arc wuxuu ku lug leeyahay isticmaalka koronto si loo dhaliyo kulayl xoog leh oo dhalaaliya cidhifyada tuubooyinka oo isku daraya.
Heerka | Heerka birta | Halabuurka kiimikada | Guryaha xamaasada | Tijaabada Saamaynta Charpy iyo Hoos u Dhigista Imtixaanka Ilmada | ||||||||||||||
C | Si | Mn | P | S | V | Nb | Ti | CEV4) (%) | Rt0.5 Mpa Xoog dhalid | Xoog Tensile Rm Mpa | Rt0.5/ Rm | (L0=5.65 √ S0) Kordhinta A% | ||||||
max | max | max | max | max | max | max | max | Mid kale | max | min | max | min | max | max | min | |||
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 Saamaynta Dabiiciga ah: Saamaynta nuugista tamarta tuubada iyo tollaynta alxanka waa in la tijaabiyaa sida loogu baahan yahay heerka asalka ah.Faahfaahinta, eeg heerka asalka ah.Tijaabada jeexjeexa miisaanka: Aagga xiirida ee ikhtiyaarka 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 laga yaabaa ≤ 0.35%, hoos yimaada qandaraas. | ||||||||||||||||||
4) CEV=C+ Mn/6 + (Cr+Mo+V)/5 + (Cu+Ni)/5 |
Mid ka mid ah qodobbada muhiimka ah ee la tixgelinayo marka arc alxanka tuubooyinka gaaska dabiiciga ah waa nooca farsamada alxanka ee la isticmaalo.Waayotuubbo alxan leh oo wareegsans, Habka ugu badan ee la isticmaalo waa tignoolajiyada alxanka quuska (SAW).Tani waxay ku lug leedahay isticmaalka qulqulka granular, kaas oo lagu shubay aagga alxanka si loo abuuro jawi ilaalin ah oo ka hortagaya oksaydhka iyo wasakhooyinka kale inay saameeyaan alxanka.Tani waxay keenaysaa alxan labis ah oo tayo sare leh oo leh cillado yaryar.
Tixgelin kale oo muhiim ah marka arc alxanka tuubooyinka gaaska dabiiciga ah waa xulashada alaabta alxanka buuxinta.Walxaha buuxinta waxa loo isticmaalaa in lagu buuxiyo daldaloolo ama khaladaad kasta oo alxanka ah, abuurista curaar adag oo joogto ah.Tuubooyinka alxanka leh ee wareegsan, walxaha buuxinta waa in la isticmaalaa taas oo ku habboon darajada birta ee gaarka ah ee loo isticmaalo iyo xaaladaha deegaanka ee ay dhuumaha u soo baxaan.Tani waxay hubinaysaa in alxanka uu u adkeysan karo cadaadiska iyo heerkulka ay la kulmaan dhuumaha gaaska dabiiciga ah.
Marka lagu daro dhinacyada farsamada alxanka arc, waxa kale oo muhiim ah in la tixgeliyo shahaadooyinka iyo khibradda alxanka ee fulinaya shaqada.Alxanka tubooyinka gaaska dabiiciga ah waxay u baahan tahay xirfad iyo khibrad sare, iyo sidoo kale faham buuxa ee caqabadaha gaarka ah iyo shuruudaha shaqada.Waa muhiim in lala shaqeeyo alxanayaal khibrad leh oo shahaado haysta kuwaas oo si joogto ah u soo saari kara alxanka tayada sare leh oo buuxiya heerarka adag ee warshadaha.
Gebagebadii, tubbada alxanka leh ee dhuuban ee tuubada gaaska dabiiciga ahi waa qayb muhiim ah oo ka mid ah warshadaha dhuumaha.Waxay u baahan tahay in si taxadar leh looga fiirsado farsamooyinka alxanka, alaabta buuxinta, iyo shahaadooyinka alxanka ee fulinaya shaqada.Iyadoo la hubinayo in arrimahan ay helaan dareenka ay u qalmaan, waxay suurtogal noqon doontaa in la abuuro tubooyinka gaaska dabiiciga ah oo buuxiya shuruudaha warshadaha ee badbaadada, kalsoonida iyo waxqabadka muddada dheer.