Shuruudaha Halabuurka Kiimikada,%,
C: ≤0.30
Mn: 0.29-1.06
B: ≤0.025
S: ≤0.025
Si: ≥0.10
Ni: ≤0.40
Cr: ≤0.30
Cu: ≤0.40
V: ≤0.08
Nb: ≤0.02
Bisha: ≤0.12
*Qaybta manganese waxaa lagu kordhin karaa 0.05% hoos u dhac kasta oo 0.01% ah oo ku yimaada kaarboonka ilaa 1.35%.
**Waxyaabaha Niobium ku jira, iyadoo lagu saleynayo heshiiska, waxaa laga yaabaa in la kordhiyo ilaa 0.05% falanqaynta dhalaalka iyo 0.06% falanqaynta badeecadaha la dhammeeyay.
Shuruudaha daaweynta kulaylka:
1. Ka dhig heerkulka ka sarreeya 815°C mid caadi ah.
2. Ka dhig heerkulka ka sarreeya 815°C mid caadi ah, ka dibna is kululee.
3. Kulul ayaa ka sameysma inta u dhaxaysa 845 iyo 945°C, ka dibna lagu qaboojiyaa foornada oo ka sarreysa 845°C (tuubooyinka aan tolnayn oo keliya).
4. Makiinad lagu sameeyay ka dibna la qaboojiyey sida ku xusan Qodobka 3aad ee kor ku xusan.
5. La adkeeyay ka dibna la kululeeyay heerkul ka sarreeya 815°C.
Shuruudaha waxqabadka farsamada:
Xoogga wax soo saarka: ≥240Mpa
Xoogga jiidista: ≥415Mpa
Kordhinta:
| Muunad | A333 GR.6 | |
| Toosan | Kala-goysyada | |
| Qiimaha ugu yar ee wareeg caadi ahmuunad ama muunad yar oo miisaankeedu yahay oo leh masaafada calaamadaynta ee 4D | 22 | 12 |
| Muunadaha leydiga ah oo dhumucdoodu tahay 5/16 inji (7.94 mm) iyo ka weyn, iyo dhammaan muunadaha cabbirka yar yar ee lagu tijaabiyayqayb buuxda oo ah 2 inji (50 mm)calaamadayn | 30 | 16.5 |
| Muunadaha leydi ilaa 5/16 inji (7.94 mm) dhumucda derbiga oo ah 2 inji (50 mm) masaafada calaamadaynta (ballaca muunadda 1/2 inji, 12.7 mm) | A | A |
A U ogolow 1.5% dhimista dhererka dheereynta iyo 1.0% dhimista dhererka isdhaafka ah 1/32 inji (0.79 mm) kasta oo dhumucda derbiga ah ilaa 5/16 inji (7.94 mm) laga bilaabo qiimayaasha fidinta ee kor ku xusan.
Tijaabada Saamaynta
Heerkulka Tijaabada: -45°C
Marka la isticmaalo muunadaha yaryar ee saamaynta Charpy oo ballaca muunaddu uu ka yar yahay 80% dhumucda dhabta ah ee walaxda, heerkul tijaabo oo saameyn yar leh waa in loo isticmaalaa sida lagu xisaabiyay Jadwalka 6 ee qeexitaanka ASTM A333.
| Muunad, mm | Celceliska ugu yar ee saddex muunad | Qiimaha ugu yar ee ku saabsane osaddexda muunadood |
| 10 × 10 | 18 | 14 |
| 10 × 7.5 | 14 | 11 |
| 10 × 6.67 | 12 | 9 |
| 10 × 5 | 9 | 7 |
| 10 × 3.33 | 7 | 4 |
| 10 × 2.5 | 5 | 4 |
Tuubooyinka birta ah waa in lagu tijaabiyaa si hydrostatic ah ama aan burburin ahayn (eddy current ama ultrasonic) iyadoo la raacayo laan-laan.
Dulqaadka dhexroorka dibadda ee tuubada birta ah:
| Dhexroorka Dibadda, mm | dulqaad wanaagsan, mm | dulqaad taban, mm |
| 10.3-48.3 | 0.4 | 0.4 |
| 48.3＜D≤114.3 | 0.8 | 0.8 |
| 114.3＜D≤219.10 | 1.6 | 0.8 |
| 219.1＜D≤457.2 | 2.4 | 0.8 |
| 457.2＜D≤660 | 3.2 | 0.8 |
| 660＜D≤864 | 4.0 | 0.8 |
| 864＜D≤1219 | 4.8 | 0.8 |
Dulqaadka dhumucda derbiga ee tuubooyinka birta ah:
Dhibco kasta waa inaysan ka yaraan 12.5% dhumucda derbiga magacaaban. Haddii dhumucda ugu yar ee derbiga la dalbado, dhibicna kama yaraan doonto dhumucda derbiga loo baahan yahay.
Waqtiga boostada: Febraayo-22-2024