Gr9 Titaniwm yn y diwydiant awyrofod
Apr 07, 2024
Y diwydiant hedfan yw'r sector cynharaf i ddatblygu a chymhwyso aloion titaniwm a thitaniwm Gr9. Heb ditaniwm mewn awyrennau a pheiriannau, byddai bron yn amhosibl adeiladu awyrennau uwchsonig ym Mach 2.7. Mae ansawdd yr injan awyren yn cael ei leihau 1kg am bob 1kg, ac mae ei gost defnyddio fel arfer yn arbed 220 ~ 440 doler. Yr Unol Daleithiau yn 1950 am y tro cyntaf yn y F84 ymladdwr-bomiwr yn y defnydd o titaniwm pur diwydiannol gweithgynhyrchu tarian gwres fuselage cefn, cowl gwynt a cowl gynffon a chydrannau di-dwyn eraill. Dechreuodd Pratt Whitney yr Unol Daleithiau yn 1954 gyda disg rotor cywasgwr injan turbojet Ti{-6Al{{-4V aloi J57 a llafn. Defnyddiodd y British Rolls Royce Company aloi Ti-6Al{{-4V ar injan Avon ym 1954.
Safonau Maint Pibellau Titaniwm - NPS ⅛ i NPS24
| NPS | DN | OD[mewn (mm)] | Trwch wal[mewn (mm)] | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| SCH 5 | SCH 10s/10 | SCH 30 | SCH 40s % 2f 40 / STD | SCH 80s/80/XS | SCH 120 | SCH 160 | XXS | |||
| ⅛ | 6 | 0.405 (10.29) | 0.035 (0.889) | 0.049 (1.245) | 0.057 (1.448) | 0.068 (1.727) | 0.095 (2.413) | - | - | - |
| ¼ | 8 | 0.540 (13.72) | 0.049 (1.245) | 0.065 (1.651) | 0.073 (1.854) | 0.088 (2.235) | 0.119 (3.023) | - | - | - |
| ⅜ | 10 | 0.675 (17.15) | 0.049 (1.245) | 0.065 (1.651) | 0.073 (1.854) | 0.091 (2.311) | 0.126 (3.200) | - | - | - |
| ½ | 15 | 0.840 (21.34) | 0.065 (1.651) | 0.083 (2.108) | 0.095 (2.413) | 0.109 (2.769) | 0.147 (3.734) | - | 0.188 (4.775) | 0.294 (7.468) |
| ¾ | 20 | 1.050 (26.67) | 0.065 (1.651) | 0.083 (2.108) | 0.095 (2.413) | 0.113 (2.870) | 0.154 (3.912) | - | 0.219 (5.563) | 0.308 (7.823) |
| 1 | 25 | 1.315 (33.40) | 0.065 (1.651) | 0.109 (2.769) | 0.114 (2.896) | 0.133 (3.378) | 0.179 (4.547) | - | 0.250 (6.350) | 0.358 (9.093) |
| 1¼ | 32 | 1.660 (42.16) | 0.065 (1.651) | 0.109 (2.769) | 0.117 (2.972) | 0.140 (3.556) | 0.191 (4.851) | - | 0.250 (6.350) | 0.382 (9.703) |
| 1½ | 40 | 1.900 (48.26) | 0.065 (1.651) | 0.109 (2.769) | 0.125 (3.175) | 0.145 (3.683) | 0.200 (5.080) | - | 0.281 (7.137) | 0.400 (10.160) |
| 2 | 50 | 2.375 (60.33) | 0.065 (1.651) | 0.109 (2.769) | 0.125 (3.175) | 0.154 (3.912) | 0.218 (5.537) | 0.250 (6.350) | 0.343 (8.712) | 0.436 (11.074) |
| 2½ | 65 | 2.875 (73.03) | 0.083 (2.108) | 0.120 (3.048) | 0.188 (4.775) | 0.203 (5.156) | 0.276 (7.010) | 0.300 (7.620) | 0.375 (9.525) | 0.552 (14.021) |
| 3 | 80 | 3.500 (88.90) | 0.083 (2.108) | 0.120 (3.048) | 0.188 (4.775) | 0.216 (5.486) | 0.300 (7.620) | 0.350 (8.890) | 0.438 (11.125) | 0.600 (15.240) |
| 3½ | 90 | 4.000 (101.60) | 0.083 (2.108) | 0.120 (3.048) | 0.188 (4.775) | 0.226 (5.740) | 0.318 (8.077) | - | - | 0.636 (16.154) |
