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High-energy drop weight testers from 20,000 J

For high-energy drop weight tests Download
Industries
  • Metals
Max. energy
  • 100,000 joules
Type of test
  • Drop weight test
Standards
  • API-RP 5L3
  • DIN EN 10274
  • ASTM E436

High-energy drop weight tests

ZwickRoell DWT high-energy drop weight testers are used for testing and evaluating fracture surfaces of ferritic steels. The test method is described as a drop weight test in the following standards: API-RP 5L3, DIN EN 10274 and ASTM E436.

Specimens from the pipe wall of large oil and gas pipelines are subjected to the drop weight test to API 5L. The specimens with a height equal to the original wall thickness and widths of several centimeters are subjected to abrupt loading via a vertically falling weight with a striking edge. The energy (weight and release height) is set so that the specimen breaks at the cold-pressed notch and the fracture surface can be assessed visually.

The DWT high-energy drop weight testers from ZwickRoell are available in the following versions: 20, 30, 40, 60, 80 and 100 KJ. The product portfolio also includes drop weight testers for low-energy tests.

  • The maximum drop height for all machine sizes is 5 meters by default. The high-energy drop weight testers DWT 20 kJ to DWT 40 kJ are alternatively available with a maximum drop height of 2.5 meters.
  • The test tools are fitted outside the test area.
  • The specimens are fed pneumatically within a time period of 10 seconds and meet ASTM E436 requirements.

120,000 joule drop weight testers

Testing steel specimens according to ASTM E436-71T, API-RP L3 and DIN EN 10274 with a 120,000 J high-energy drop weight tester.

Advantages and features

Advantages

Advantages

  • Modular system in six sizes and two drop heights
  • Pneumatic specimen feeding and loading of the tools outside the test area guarantees safe and fast feeding within the time required by the standard
  • Quick-change system for anvils
  • Flexure table with integrated centering device. Different specimen thicknesses can be quickly and easily adjusted.
  • Electrical and mechanical test area protection with safety circuit - testing only takes place after all safety contacts have been checked/confirmed
  • Electronically monitored, pneumatically actuated safety lock bar to protect the test area from accidents
  • Touch screen operation with electronic display of drop height, drop energy, drop weight and drop speed
  • The steplessly adjustable drop height is automatically achieved after input of the drop weight and drop energy
  • The drop weight is divided into individual weights to adjust the drop energy. The weight is measured electronically. This eliminates incorrect data entry
  • Four high-performance shock absorbers with reservoir for safe, reliable drop weight arrest
  • Controlled low-temperature cooling unit for precise maintenance of the specimen temperature
  • Plan view of the foundation included in the scope of delivery
  • The connecting plate, anchor bolts and grouting mortar included in the scope of delivery can be supplied in advance on request.

Technical overview

Contract testing_1

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Other drop weight testers & pendulum impact testers for metals

Downloads

Name Type Size Download
  • Product Information: High-energy drop weight tester 20–40 kJ PDF 301 KB
  • Product Information: High-energy drop weight tester 60–100 kJ PDF 477 KB

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