Alloys-dhaqameedku waxay door caadi ah ka ciyaaraan wax-soo-saarka biraha, ha ahaato birta aan nadiifka ahayn ee loo isticmaalo aaladaha caafimaadka ama cuntada badda, mid kasta oo ka mid ah jiilalka birta waxqabadka sare leh ee la soo saaray dhowrkii sano ee la soo dhaafay warshadaha baabuurta, ama biraha sida aluminium iyo titanium.kuwaas oo leh awood sare oo miisaan culus iyo iska caabbinta daxalka sare ayaa si gaar ah ugu habboon codsiyada hawada hawada, nadiifinta saliidda iyo warshadaha kiimikada.
Isla sidaas oo kale ayaa khuseeysa qaar ka mid ah birta kaarboonka, gaar ahaan alloys ka kooban kaarboon iyo manganese gaar ah.Iyadoo ku xiran qadarka walxaha alloying, qaar ka mid ah ayaa si fiican ugu habboon wax soo saarkagarbaha, qalabayntaiyodhuumahaDhammaantood waxay leeyihiin hal shay oo ay wadaagaan: alaabta loo isticmaalo codsiyadan waa inay ahaadaan kuwo ductile ku filan oo u adkeysan kara jabka jaban iyo cadaadiska daxalka (SCC).
Ururada jaangooyooyinka sida Bulshada Maraykanka ee Injineerada Wax soo saarka (ASME) iyo ASTM Intl.(oo hore loogu yiqiin American Society for Testing and Materials) ayaa hagis ka bixiya arrintan.Laba codes warshadaha la xiriira-Kuleyliyaha ASMEiyo Markabka Cadaadiska (BPVD) Qaybta VIII, Qaybta 1, iyo ASME B31.3, Habka Tuubbooyinka - ciwaanka birta kaarboonka (wax kasta oo ka kooban 0.29% ilaa 0.54% kaarboon iyo 0.60% ilaa 1.65% manganese, birta ka kooban tahay).dabacsan oo ku filan in loo isticmaalo cimilo kulul, gobolada kulaylka leh iyo heerkulku hooseeyo -20 darajo Fahrenheit.Si kastaba ha ahaatee, dib u dhacyadii ugu dambeeyay ee heerkulka deegaanka ayaa horseeday in si dhow loo baadho cadadka iyo saamiga walxaha kala duwan ee microalloying ee loo isticmaalo soo saarista flanges, qalabyada iyo qalabka. tuubooyinka birta api.
Ilaa dhawaan, ASME iyo ASTM midkoodna uma baahna tijaabinta saamaynta si loo xaqiijiyo marin-haweedka alaabooyin badan oo birta kaarboon ah oo loo isticmaalo heerkul u hooseeya -20 darajo Fahrenheit.Go'aanka ah in laga saaro alaabooyinka qaarkood waxay ku saleysan tahay sifooyinka taariikheed ee walxaha.Tusaale ahaan, marka heerkulka naqshadaynta birta ugu yar (MDMT) uu yahay -20 darajo Fahrenheit, waa laga dhaafay tijaabada saamaynta sababtoo ah doorkeeda dhaqanka ee codsiyadan.
Waqtiga boostada: Abriil-19-2023