Tengstèn Rod
Konpozisyon chimik:
| Konpozan prensipal ak minè | Min.content (%) | ASTM B760 |
| W | 99.95 | balans |
| Enpurte | Max.values (μg/g) | Max.values (μg/g) |
| Al | 15 | - |
| Cu | 10 | - |
| Cr | 20 | - |
| Fe | 30 | 100 |
| K | 10 | - |
| Ni | 20 | 100 |
| Si | 20 | 100 |
| Mo | 100 | - |
| C | 30 | 100 |
| H | 5 | - |
| N | 5 | 100 |
| O | 20 | 100 |
| Cd | 5 | - |
| Hg | 1 | - |
| Pb | 5 | - |
Dyamèt ak tolerans:
| Dyamèt (mm) | Tolerans | |||
| Dwat | Fòje | Vire | Tè | |
| 0.50-0.99 | - | - | ± 0.007 | |
| 1.00-1.99 | - | - | ± 0.010 | |
| 2.00-2.99 | ±2.0% | - | ± 0.015 | |
| 3.00-15.9 | - | - | ± 0.020 | |
| 16.0-24.9 | - | ± 0.30 | ± 0.030 | |
| 25.0-34.9 | - | ±0.40 | ± 0.050 | |
| 35.0-39.9 | - | ±0.40 | ± 0.30 | ± 0.060 |
| 40.0-49.9 | - | ±0.40 | ± 0.30 | ± 0.20 |
| 50.0-90.0 | - | ± 1.00 | ±0.40 | - |
Longè ak dwat:
| Dyamèt (mm) | Longè pwodiksyon (mm) | Dwazite/Mèt (mm) | |
| Netwaye | Atè/vire | ||
| 0.50-10.0 | ≥500 | ＜2.5 | ＜2.5 |
| 10.1-50.0 | ≥300 | ＜2.0 | ＜1.5 |
| 50.1-90.0 | ≥100 | ＜2.0 | ＜1.5 |
Tolerans longè:
| Dyamèt 0.50-30.0 mm | ||||||
| Longè nominal (mm) | ≥15 | 15-120 | 120-400 | 400-1000 | 1000-2000 | > 2000 |
| Tolerans longè (mm) | ±0.2 | ±0.3 | ±0.5 | ± 2.0 | ± 3.0 | ± 4.0 |
| Dyamèt > 30.0 mm | ||||||
| Longè nominal (mm) | ≥30 | 30-120 | 120-400 | 400-1000 | 1000-2000 | > 2000 |
| Tolerans longè (mm) | ±0.5 | ±0.8 | ± 1.2 | ± 4.0 | ± 6.0 | ± 8.0 |
Dansite: ≥19.1g/cm³
Tès nondestructive: Pou dyamèt > 15.00 mm: 100% tès ultrasons.Pou dyamèt 0.50-50.0mm: Eddy aktyèl tès sou branch bwa ak sifas tè.
| Dyamèt (mm) | Dite (HV 10) |
| 0.50-2.99 | — |
| 3.00-9.99 | 420-500 |
| 10.0-29.9 | 420-480 |
| 30.0-49.9 | 380-460 |
| ≥50 | >350 |
Kondisyon sifas:
| Dyamèt (mm) | Kondisyon sifas |
| 0.50-90.0 | Netwaye chimik |
| ≥40.0 | Vire Ra ≤3.2μm |
| 0.50-30 | Centerless tè Ra≤1.0μm |
| ≥40.0 | - Centerless tè Ra≤1.2μm |
Ekri mesaj ou la a epi voye l ba nou
