Pendulum Impact Testing Machine for Metals, Drop Weight Tear Test (DWTT)
Request a Quote
PIT-E Series (20kJ-100kJ)
This pendulum impact testing machine is specifically engineered for drop weight tear testing (DWTT) of ferritic steels, pipeline steels, and other metallic materials. This test evaluates a material’s impact resistance by measuring DWTT impact energy under dynamic loading. It also allows observation of fracture appearance within the ductile-to-brittle transition temperature range. The equipment is widely used in the development of high-grade thick-wall pipeline steels and ferritic steels.
Standards
ASTM E436, GB/T 8363, API RP 5L3
Features
- Heavy-duty base & frame
A reinforced base and high-stiffness frame ensure long-term dimensional stability and accurate energy measurement while effectively damping residual vibration following each impact event. - Three impact energy levels
Multiple selectable energy levels can be achieved without changing the pendulum, offering greater convenience and improved test efficiency. - Fully automated operation
This impact testing machine configuration supports automatic specimen feeding, impact execution, pendulum lifting, and specimen removal, enabling a true fully automated workflow. - Precision pendulum system
A servo motor delivers constant torque for accurate, repeatable pendulum elevation. The cycloidal drive directly drives the clutch, providing a compact structure with a high reduction ratio, strong overload capacity, and minimal maintenance requirements. - Automatic specimen collection
After testing, specimens are automatically transferred outside the protective enclosure for safe and efficient retrieval, significantly increasing throughput in high-volume testing environments. - Full safety protection
A fully enclosed safety guard prevents specimen debris from escaping during impact. Integrated door-interlock and limit-switch protection ensures operation only when all safety conditions are properly satisfied. - Siemens-based control platform
A Siemens S7-200 PLC provides reliable control logic, a high degree of automation, reduced operator workload, and improved productivity and operational safety.
Specifications
| Model | | |
| Max. impact energy | 20000J, 30000J, 40000J | 100000J |
| Angle of striking | 81.6°, 106.3°, 135° | 135°-63° |
| Distance from the axis of support to the center of percussion | 2000mm | 2400mm |
| Velocity of striking | 5.788m/s, 7.088m/s, 8.183m/s | 5.07-8.96m/s |
| Support span | 254±0.8mm | |
| Radius of curvature of supports | 14.3±0.5mm | |
| Angle of taper of supports | 11° | |
| Radius of striking edge | 25.4±0.4mm | |
| Thickness of striking tip | 50.8±0.8mm | |
| Specimen dimension | 305 x 76.2 x (3-40) mm | |
| Weight | 40000kg | |
| Electric supply | AC 380V±10%, 50Hz, 3-phase, 5-line | |