1. Application:
DWTT series digital display drop weight tear test machine can be used to less than 40 mm conveying pipe or thickness 3 ~ 40 mm ferritic steel, bainite steel, dual phase steel and other steel drop weight tear test (DWTT).
2. Implementation Of Standards:
2.1. GB/T8363-1987: Ferritic steel DWTT.
2.2. ASTME436-1991(Re1997): Ferritic steel DWTT.
2.3. API RP 5L3-1996: Linepipe recommend the practice of drop-weight tear.
3. Main Technical Parameter:
Model | DWTT- 10000 | DWTT- 20000 | DWTT- 30000 | DWTT- 4000 | DWTT- 5000 |
Max impact energy(J) | 10000 | 20000 | 30000 | 40000 | 50000 |
Min impact energy(J) | 4000 | 8000 | 12000 | 15000 | 20000 |
Main hammer body quality(Kg) | 630 | 630 | 630 | 800 | 1180 |
main hammer body quality error | ±1% |
Weight quality | 120 | 120 | 390 | 660 | 780 |
Weight quality error | ±1% |
Total hammer body quality | 1020 | 1020 | 1020 | 1460 | 1960 |
Lifting height of drop hammer(mm) | 1275~2500 |
Impact speed (m/s) | 5 m~7m/s |
Lifting hammer speed (m/min) | About 3.0m/min |
Height test resolution(mm) | 0.1 |
Height test error(mm) | ≤±10 |
Hammer blade hardness | HRC≥50 |
Hammer blade radius of curvature | R25.4mm |
Support radius of curvature | R14.3mm |
Bearing hardness | HRC58~62 |
Hammer blade center、Sample center and Support center deviation (mm) | ≤±1.5 mm |
Sample bearing span(mm) | 254±1.5mm |
Sample specifications(mm) | (305±5)×(76±1.5)×(3~40) |
Optional | Computer |
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