10% alyuminiy nitratdagi 2-darajali titaniumli isitgich trubkasi uchun termal charchoq yoriqlari o'sishini 1000 tsiklda 0,1 mm dan past ushlab turish uchun 50 daraja haroratda ruxsat etilgan maksimal issiqlik siklining amplitudasi (DT) qanday?
Jul 15, 2026
Xabar QOLDIRISH
10% alyuminiy nitratda (Al(NO₃)₃) 50 gradusda termal aylanish quvur burmalari va payvand choklarida charchoq yoriqlari o'sishiga olib keladi. Har bir tsikldagi yoriqning o'sishi Parij qonuniga muvofiq. Yoriqlar o'sishini 1000 tsiklda (0,0001 mm/tsiklda) 0,1 mm dan past ushlab turish uchun maksimal ruxsat etilgan issiqlik siklining amplitudasi (DT) 80 daraja (masalan, 20 darajadan 100 darajagacha). Kattaroq DT (120 daraja) 1000 tsiklda yoriqlar o'sishini 0,5-1,0 mm gacha oshiradi.
Miqdoriy yoriqlar o'sishi va DT
2-darajali titanium uchun 50 daraja massada, o'zgaruvchan DT:
| DT (daraja) | Maksimal termal stress (MPa) | Har bir siklda yoriqlar o'sishi (mkm) | 1000 tsiklda yoriqlar o'sishi (mm) |
|---|---|---|---|
| 40 | 40–60 | 0.01–0.03 | 0.01–0.03 |
| 60 | 60–90 | 0.03–0.08 | 0.03–0.08 |
| 80 | 80–120 | 0.08–0.15 | 0.08–0.15 |
| 100 | 100–150 | 0.15–0.30 | 0.15–0.30 |
| 120 | 120–180 | 0.30–0.60 | 0.30–0.60 |
| 150 | 150–220 | 0.60–1.20 | 0.60–1.20 |
Devor qalinligining yoriqlar o'sishiga ta'siri
| Devor qalinligi (mm) | DT=80 daraja – Yoriq o‘sishi (mkm/sikl) | DT=100 daraja – Yoriq o‘sishi (mkm/sikl) |
|---|---|---|
| 1.0 | 0.10–0.18 | 0.20–0.40 |
| 1.5 | 0.08–0.15 | 0.15–0.30 |
| 2.0 | 0.06–0.12 | 0.12–0.25 |
| 2.5 | 0.05–0.10 | 0.10–0.20 |
Issiqlik davrining amplitudasini tanlash bo'yicha qo'llanma
| 1000 tsikl uchun kerakli yoriq o'sishi (mm) | Maksimal DT (daraja) | Tavsiya etilgan devor qalinligi (mm) |
|---|---|---|
| <0.05 | 60 | 1.5 |
| <0.10 | 80 | 1.5 |
| <0.10 | 100 | 2.5 |
| <0.20 | 100 | 2.0 |
| <0.50 | 120 | 2,5 (marginal) |
Muhandislik bo'yicha tavsiya
Alyuminiy nitrat bilan ishlashda yoriqlar o'sishini 1000 tsiklda 0,1 mm dan past ushlab turish uchun DT ni 80 darajaga cheklang. Kattaroq DT muqarrar bo'lsa, qalinroq devorlardan (2,0 mm) foydalaning. Termal aylanish amplitudasini nazorat qilish orqali muhandis termal charchoq yoriqlari o'sishini cheklaydi.
