Kala-soocidda Birta Aan Daxalka Lahayn

Birta aan daxalka lahayn waxaa loo qaybin karaa bir aan daxalka lahayn oo austenitic ah, bir aan daxalka lahayn oo ferritic ah, bir aan daxalka lahayn oo martensitic ah iyo bir aan daxalka lahayn oo laba jibbaaran iyadoo loo eegayo qaab-dhismeedkeeda birta.

(1) Bir aan miridh lahayn oo Austenitic ah

Qaab-dhismeedka heerkulka qolka ee birta aan lahayn austenitic waa austenite, kaas oo lagu sameeyo iyadoo lagu darayo nikkel ku habboon birta aan lahayn chromium ee sare.

Birta aan miridhku lahayn ee Austenitic waxay leedahay qaab-dhismeed austenitic ah oo deggan oo keliya marka Cr uu ka kooban yahay qiyaastii 18%, Ni 8% ilaa 25%, iyo C qiyaastii 0.1%. Birta aan miridhku lahayn ee Austenitic waxay ku salaysan tahay birta Cr18Ni9. Iyada oo la adeegsanayo isticmaallo kala duwan, lix taxane oo bir ah oo aan miridhku lahayn oo austenitic ah ayaa la sameeyay.

Noocyada caadiga ah ee birta aan lahayn austenitic:
(1) 1Cr17Mn6Ni15N; (2) 1Cr18Mn8Ni5N; (3) 1Cr18Ni9; (4) 1Cr18Ni9Si3; (5) 06Cr19Ni10; (6) 00Cr19Ni10; (7) 0Cr19Ni9N; (8) 0Cr19Ni10NbN; (9) 00Cr18Ni10N; (10) 1Cr18Ni12; (11) 0Cr23Ni13; (12) 0Cr25Ni20; (13) 0Cr17Ni12Mo2; (14) 00Cr17Ni14Mo2; (15) 0Cr17Ni12Mo2N; (16) 00Cr17Ni13Mo2N; (17) 1Cr18Ni12Mo2Ti; (18) 0Cr; 1Cr18Ni12Mo3Ti; (20) 0Cr18Ni12Mo3Ti; (21) 0Cr18Ni12Mo2Cu2; (22) 00Cr18Ni14Mo2Cu2; (23) 0Cr19Ni13Mo3; (24) 00Cr19Ni13Mo3; (25) 0Cr18Ni16Mo5; (26) 1Cr18Ni9Ti; (27) (29) 0Cr18Ni; 0Cr18Ni13Si4;

Birta aan miridhku lahayn ee Austenitic waxay ka kooban tahay xaddi badan oo Ni iyo Cr ah, taasoo ka dhigaysa birta austenite heerkulka qolka. Waxay leedahay dabacsanaan wanaagsan, adkeysi, alxan, iska caabin daxaleed iyo sifooyin birlab ah oo aan birlab ahayn ama daciif ah. Waxay leedahay iska caabin daxaleed oo wanaagsan marka la isticmaalayo oksaydheynta iyo yaraynta warbaahinta. Waxaa loo isticmaalaa in lagu sameeyo qalabka u adkaysta aashitada, sida weelasha u adkaysta daxalka iyo dahaarka qalabka iyo gaadiidka. Tuubooyinka, qaybaha qalabka u adkaysta aashitada nitric, iwm., ayaa sidoo kale loo isticmaali karaa agabka ugu muhiimsan ee qurxinta. Birta aan miridhku lahayn ee Austenitic guud ahaan waxay qaadataa daawaynta xalka, taas oo ah, birta waxaa lagu kululeeyaa 1050 ilaa 1150°C, ka dibna waxaa lagu qaboojiyaa biyaha ama waa la qaboojiyaa hawada si loo helo qaab-dhismeed hal-marxalad ah oo austenite ah.

(2) birta aan miridhku lahayn ee ferritic

Noocyada birta aan miridhku lahayn ee loo isticmaalo sida caadiga ah: (1) 1Cr17; (2) 00Cr30Mo2; (3) 00Cr17; (4) 00Cr17; (5) 1Cr17Mo; (6) 00Cr27Mo;

Birta aan miridhku lahayn ee Ferritic waa bir aan miridhku lahayn oo qaab-dhismeedkeedu inta badan yahay ferrite heerkulka qolka. Waxyaabaha ku jira Chromium waa 11%-30%, iska caabbinta daxalka, adkaysiga iyo alxanka ayaa kordha marka la kordhiyo tirada chromium, iska caabbinta daxalka ee chloride-ka ayaa ka fiican noocyada kale ee birta aan miridhku lahayn, noocan birta ah guud ahaan kuma jiraan nikkel, mararka qaarkood Waxa kale oo ku jira xaddi yar oo Mo, Ti, Nb ah iyo walxo kale. Noocan birta ah waxa uu leeyahay astaamaha wareejinta kulaylka weyn, isku-darka ballaarinta yar, iska caabbinta oksaydhka wanaagsan, iyo iska caabbinta daxalka cadaadiska oo aad u fiican. Inta badan waxaa loo isticmaalaa in lagu soo saaro iska caabbinta jawiga, uumiga biyaha, biyaha iyo asiidhyada oksaydhka. Qaybaha daxalka leh. Si kastaba ha ahaatee, sifooyinka farsamada iyo waxqabadka habka waa kuwo liita, waxaana inta badan loo isticmaalaa qaab-dhismeedka u adkaysta aashitada oo leh walaac yar iyo sida birta ka hortagga oksaydhka. Waxa kale oo ay soo saari kartaa qaybo ka shaqeeya heerkul sare, sida qaybaha gaaska.