Fasalada 321 iyo 347 waa aasaaska austenitic 18/8 birta (Fasalka 304) ee ay dejisay Titanium (321) ama Niobium (347) lagu daro.Darajooyinkan waxaa loo isticmaalaa sababtoo ah maaha kuwo xasaasi u ah daxalka intergranular ka dib kuleylinta gudaha qiyaasta roobabka carbide ee 425-850 °C.Fasalka 321 waa heerka doorashada ee codsiyada heerkulka u dhexeeya ilaa 900 °C, isku darka xoogga sare, iska caabinta miisaanka iyo xasilloonida wejiga oo leh caabbinta daxalka aqueous ee xiga.
Birta Aan-Aabaha lahayn - Fasalka 321 (UNS S32100)
Fasalka 321H waa wax ka beddelka 321 oo leh kaarboon sare oo ka kooban, si loo bixiyo awood heerkul sare oo la hagaajiyay.
Xaddidaadda 321 ayaa ah in titanium-ku aanu si fiican ugu gudbin arc heerkulkiisu sarreeyo, markaa laguma talinayo alxanka la isticmaalo.Xaaladdan oo kale darajada 347 ayaa la door bidaa - niobium waxay qabataa isla hawsha xasilinta carbide laakiin waxaa lagu wareejin karaa arc alxanka.Fasalka 347, sidaas darteed, heerka la isticmaalo ee alxanka 321. Fasalka 347 waxa kaliya oo marmar loo isticmaalaa sida saxan waalidka.
Si la mid ah buundooyinka kale ee austenitic, 321 iyo 347 waxay leeyihiin sifooyin alxan oo aad u wanaagsan, si diyaar ah ayaa biriiga ama duuban loo sameeyay waxayna leeyihiin astaamo alxan oo heersare ah.Annealing ka dib alxanka looma baahna.Waxay sidoo kale leeyihiin adkeysi aad u fiican, xitaa ilaa heerkulka cryogenic.Fasalka 321 si fiican uma shaandheyn, sidaas darteed laguma talinayo codsiyada qurxinta.
Birta Aan-Aabaha lahayn - Fasalka 321 (UNS S32100)
Fasalka 304L si fudud ayaa loo heli karaa foomamka alaabada intooda badan, sidaas darteed waxaa guud ahaan loo isticmaalaa doorbidida 321 haddii shuruuda ay tahay si fudud u caabbinta daxalka intergranular ka dib alxanka.Si kastaba ha noqotee, 304L waxay leedahay awood ka kulul oo ka hooseysa 321 sidaas darteed maaha doorashada ugu fiican haddii shuruudu ay tahay iska caabinta jawiga hawlgalka ee ka sarreeya 500 ° C.
Guryaha Furaha
Guryahaan waxaa lagu sifeeyay badeecooyinka fidsan (saxan, xaashida, iyo gariiradda) ee ASTM A240/A240M.Guryo la mid ah laakiin aan la mid ahayn ayaa loo cayimay alaabada kale sida tuubada iyo baarka sifooyinkooda.
Halabuurka
Birta Aan-Aabaha lahayn - Fasalka 321 (UNS S32100)
Noocyada caadiga ah ee iskudhafka ah ee fasalka 321 ee xaashida birta ah ayaa lagu bixiyay shaxda 1.
Shaxda 1.Iskudubbaridu waxay u dhaxaysaa 321-heerka birta aan lahayn
Darajo | C | Mn | Si | P | S | Cr | Mo | Ni | N | Mid kale | |
---|---|---|---|---|---|---|---|---|---|---|---|
321 | min. max | - 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | - | 9.0 12.0 | 0.10 | Ti=5(C+N) 0.70 |
321H | min. max | 0.04 0.10 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | - | 9.0 12.0 | - | Ti=4(C+N) 0.70 |
347 | min. max | 0.08 | 2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 | - | 9.0 13.0 | - | Nb=10(C+N) 1.0 |
Guryaha Makaanikada
Guryaha farsamada ee caadiga ah ee darajada 321 xaashida birta ah ee birta ah ayaa lagu sheegay shaxda 2.
Shaxda 2.Qalabka makaanikada ah ee 321-heerka birta aan lahayn
Darajo | Xoogga Jilitaanka (MPa) min | Xoogga Wax-soosaarka 0.2% Caddeynta (MPa) min | Ballaarinta (% 50 mm) min | Adag | |
---|---|---|---|---|---|
Rockwell B (HR B) ugu badnaan | Brinell (HB) ugu badnaan | ||||
321 | 515 | 205 | 40 | 95 | 217 |
321H | 515 | 205 | 40 | 95 | 217 |
347 | 515 | 205 | 40 | 92 | 201 |
Guryaha Jirka
Guryaha jireed ee caadiga ah ee fasalka 321 ee xaashida birta ah ee aan kala go'a lahayn ayaa lagu bixiyay shaxda 3.
Shaxda 3.Astaamaha jireed ee 321-heerka birta ah ee aan fiicnayn ee xaalada la tirtiray
Darajo | Cufnaanta (kg/m3) | Qalabka Elastic (GPa) | Isku-dhafka celceliska balaarinta kulaylka (μm/m/°C) | Habdhaqanka Kulaylka (W/mK) | Kuleylka Gaarka ah 0-100 °C (J/kg.K) | Iska caabin koronto (nΩ.m) | |||
---|---|---|---|---|---|---|---|---|---|
0-100 °C | 0-315 °C | 0-538 °C | heerkulka 100 ° C | heerkulka 500 ° C | |||||
321 | 8027 | 193 | 16.6 | 17.2 | 18.6 | 16.1 | 22.2 | 500 | 720 |
Isbarbardhigga Fasalka
Qiyaasta isbarbardhigga darajada 321 xaashiyaha birta ah ee birta ah ayaa lagu bixiyay shaxda 4.
Shaxda 4.Tilmaamaha darajada 321-heerka birta ah
Darajo | UNS No | Ingiriiska hore | Euronorm | Iswidishka SS | Jabbaan JIS | ||
---|---|---|---|---|---|---|---|
BS | En | No | Magaca | ||||
321 | S32100 | 321S31 | 58B, 58C | 1.4541 | X6CrNiTi18-10 | 2337 | SUUS 321 |
321H | S32109 | 321S51 | - | 1.4878 | X10CrNiTi18-10 | - | SUS 321H |
347 | S34700 | 347S31 | 58G | 1.4550 | X6CrNiNb18-10 | 2338 | SUUS 347 |
Waqtiga boostada: Mar-10-2023