Xaqiijinta tayada tuubada birta ee gidaarka qaro weyn ee laga sameeyay Shiinaha
Dhuumaha birta daawaha ah waxaa inta badan loo isticmaalaa dhuumaha cadaadiska sarreeya iyo kuwa heerkulka sare leh iyo qalabka sida warshadda korontada, tamarta nukliyeerka, kuleyliyaha sare ee heerkulka sare iyo dib-u-kuliyaha. Waxay ka samaysan tahay bir kaarboon ah oo tayo sare leh, bir qaabdhismeed alloy ah iyo birta kulaylka u adkaysata iyada oo loo marayo rogid kulul (extrusion, ballaarinta) ama duubid qabow (sawir). Faa'iidada ugu weyn ee dhuumaha birta daawaha ah ayaa ah in dib loo warshadayn karo 100%, taas oo la jaanqaadaysa istiraatiijiyadda qaranka ee ilaalinta deegaanka, ilaalinta tamarta iyo ilaalinta kheyraadka. Siyaasadda qaranku waxay dhiirigelinaysaa balaadhinta goobta codsiga ee tuubada daawaha cadaadiska sare. Waqtigan xaadirka ah, isticmaalka tuubooyinka daawaha ee Shiinaha ayaa xisaabiya kala bar kaliya wadarta guud ee birta ee wadamada horumaray. Balaadhinta goobta codsiga ee tuubooyinka daawaha ayaa siinaya meel ballaadhan oo loogu talagalay horumarinta warshadaha. Sida laga soo xigtay cilmi-baarista kooxda khabiirka ah ee laanta tuubooyinka daawaha ee Shiinaha Gaarka ah ee Biraha Gaarka ah, baahida loo qabo dhererka tuubooyinka dabaysha ee cadaadiska sare ee Shiinaha ayaa kordhin doona 10-12% sanad walba mustaqbalka. Tuubbada Alloy waxaa lagu qeexaa sida birta birta iyadoo loo eegayo alaabta wax soo saarka (ie walxo). Sida magaca ka muuqata, waa tuubo ka samaysan alwaax; Dhuumaha aan cillad lahayn waxaa lagu qeexaa iyadoo loo eegayo habka wax soo saarka ee tuubada birta (seamless seam). Waxa ka duwan tuubooyinka aan tolitaanka lahayn, oo ay ku jiraan tol toosan oo alxan leh iyo tuubo wareeg ah.
16-50Mn
27SiMn
40Cr
12-42CrMo
16Mn
12Cr1MoV
T91
27SiMn
30CrMo
15CrMo
20G
Cr9Mo
10CrMo910
15Mo3
15CrMoV
35CrMoV
45CrMo
15CrMoG
12CrMoV
45Cr
50Cr
45crnimo iyo al.
Tuubooyinka daawaha ayaa leh qaybo godan waxaana si weyn loogu isticmaalaa sida dhuumaha qaada dareeraha, sida dhuumaha qaada saliidda, gaaska dabiiciga ah, gaasta, biyaha iyo qaar ka mid ah qalabka adag. Marka la barbar dhigo birta adag sida birta wareegsan, tuubada birta daawaha ah waxay leedahay miisaan ka fudud marka foorarkeeda iyo xooggeeda torsional ay isku mid yihiin. Dhuumaha birta Alloy waa birta qaybta dhaqaalaha, taas oo si weyn loo isticmaalo si ay u soo saaraan qaybaha qaab-dhismeedka iyo qaybaha farsamada, sida tuubada daloolista saliidda, usheeda dhexe baabuurta gudbinta, jir baaskiil iyo biraha scaffold loo isticmaalo dhismaha. Samaynta qaybo giraan ah oo leh birta birta daawaha waxay hagaajin kartaa heerka isticmaalka walxaha, fududaynta habka wax soo saarka, kaydinta alaabta iyo saacadaha shaqada, sida giraanta duubista, sleeve jack, iwm hadda, tuubada birta ayaa si ballaaran loo isticmaalay wax soo saarka. Dhuumaha birta Alloy sidoo kale waa shay lagama maarmaan u ah dhammaan noocyada hubka caadiga ah. Foostada qoryaha iyo foosto waa in laga sameeyaa tuubo bir ah. Dhuumaha birta daawaha ah waxaa loo qaybin karaa tuubo wareegsan iyo tuubo qaabaysan iyadoo loo eegayo aagga iyo qaabka kala duwan ee iskutallaabta. Sababtoo ah aagga wareega ayaa ah kan ugu weyn ee hoos yimaada xaaladda wareegga siman, dareere badan ayaa lagu qaadi karaa tuubo wareeg ah. Intaa waxaa dheer, marka qaybta giraanta lagu soo rogo cadaadis gudaha ama dibadda ah, xooggu waa labis badan. Sidaa darteed, inta badan tuubooyinka birta waa tuubooyinka wareegsan.
