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High-Energy Drop Weight Testers from 20,000 J

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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 tup. The energy (weight and release height) is set so that the specimen breaks and the fracture surface can be assessed visually.

High-energy drop weight tester 120,000 J

Testing steel specimens to ASTM E436-71T, API RP L3 and DIN EN 10274

Advantages & Features

Advantages & Features

Description
Advantages

Description

  • Bei der Prüfung fallen Gewichte auf eine an beiden Enden gelagerte Probe und zerschlagen diese. Die Probe ist mit einer kalt eingepressten Kerbe versehen, an der die Probe bei der Schlageinwirkung bricht.
  • Die Fallwerke DWT stehen in den Baugrößen 20, 30, 40, 60, 80 und 100 KJ zur Verfügung.
  • Die maximale Fallhöhe aller Baugrößen beträgt standardmäßig 5 m. Die Fallwerke DWT 20 - 40 gibt es alternativ mit einer maximalen Fallhöhe von 2,5 m.
  • Die Prüfwerkzeuge werden außerhalb des Prüfraums bestückt.
  • Die Proben werden pneumatisch innerhalb von 10 Sekunden zugeführt und erfüllen die Vorgaben der ASTM E436.

Advantages

  • Modular "building block" system with six sizes and two drop-heights.
  • Pneumatic specimen feed and fixture loading outside the test area guarantees fast, reliable feeding within the time required by the standard.
  • Quick-change system for anvils.
  • Flexure table with integrated centering unit. Different specimen thicknesses can be set quickly and easily.
  • Electrical and mechanical test-area safeguards with safety circuit - the test does not begin until all safety switch contacts have been interrogated.
  • Electronically monitored, pneumatically operated safety interlocking to guard the test area against accidents.
  • Touchscreen operation with electronic display of drop height, drop energy, drop weight and impact velocity.
  • The steplessly adjustable drop height is automatically achieved after input of drop weight and drop energy.
  • The drop weight is divided into individual weights to allow adjustment of drop energy. The weight is measured electronically, eliminating input errors.
  • Four high-performance reservoir-type shock absorbers for safe, reliable drop-weight arrest.
  • Controlled low-temperature cooler for accurately maintained specimen temperature.
  • Plan view of foundation included in delivery.
  • The connecting plate, anchor bolts and grout included in delivery can be supplied in advance if required.

Technical Overview

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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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