|
|
|
|
|
|
The continuous growth in pipeline networks means that materials testing is becoming more and more important for the protection of people and the environment.
Against this background Zwick has enlarged its product program for metals testing and introduced a new DWT line of large drop impact testers from 20 to 100 kJ.
The drop weight test helps Engineers to evaluate the fractured surfaces of Ferritic steels, as the relative proportions of deformation and brittle fracture surfaces are diagnosed by visual determination. Ferritic steels are usually used for pipeline tubes or for sheet metals used in the manufacturing of such tubes.
The recommended practice 5L3 issued by the American Petroleum Institute (API) describes the testing procedure to be used on large-drop impact testers. A specimen supported at both ends is impacted with a cold-press-fitted notch, with the point of impact opposite the notch. Since the specimen thicknesses are very large sections of actual pipeline tubes, high impact energies of up to 100,000 Joule are necessary to break the specimen.
Zwick’s DWT large-drop impact testers are differentiated by their sophisticated integral safety concept that does not allow any access to the test area while in test mode. Furthermore, for drop impact tests, high rates of testing are required, so Zwick has developed a pneumatic feeding system to simplify the loading of the specimens into the testing machine.
|
|
|
|
|
|
Model: ZCJ1302-1, ZCJ1302-2, ZCJ1302-3, ZCJ1302-4
Max impact energy: 300J
Features:
This machine is for impact resistance test of various flats and pipes. It's the necessary test instrument for factories and scientific research institutes.
Full automatic control allows that automatically preventing a second time impact, automatically crosshead adjusting to zero , automatically specimen adjusting to zero, automatically crosshead returning to a predetermined height, and automatically detecting door closing state.
Special control panel and display can satisfy user operation and display requirements, for example, display real-time test data, height, velocity, and impact height setup. This system has power-off protection function, preset impact height data may not lose at power failure.
This instrument is applicable to test impact energy of plastics, ceramics, nylons, construction materials and other non-metal pipes and flats. Provide with automatic height control, display and drop control. Lower test platform adjustment is driven by motor automatically, which reduces labor intensity of operator and improves productivity.
|
|
|
|
|
|
A range of drop weight impact testers for measuring the fracture characteristics and fracture ductility of steel specimens according to the following standards: API recommended practice 5L3, EN 10274, ASTM-E 436 and ‘Pellini’
Key features:
Very robust construction stands up to the rigours of high energy testing to provide high reliability with a minimum of downtime.
Easily interchangeable contact parts simplify maintenance and reduce cost of ownership.
State-of-the-art testing accommodates impact energies up to 100,000J and specimens up to 50mm thick.
Very high levels of safety employing multiply redundant systems, compliant with 89/392/EEC and 91/368/EEC machinery safety directives.
Automated specimen loading provides compliance with cycle times required by test methods, while maintaining operator safety.
Very rigid base and anvils ensures very low flexure under high test loads.
Guided mass system to ensure that the impact geometry is correct throughout the entire test.
Highly accurate and repeatable drop parameters.
High quality, easy to use control software ensures consistency and enhances throughput.
Optional instrumentation package to measure impact force up to 1500kN.
Provides values for peak force and energy to fail, together with a high resolution force-deflection curve to analyse failure mode.
Optional variable mass system to provide precise control over impact parameters.
Optional high speed, fully integrated video system to provide visualization of specimen failure mode.
Optional liquid cooled temperature conditioning bath.
Responsive life-time technical support.
|
|
|
|
|
|
A range of drop weight impact testers for measuring the fracture characteristics and fracture ductility of steel specimens according to the following standards: API recommended practice 5L3, EN 10274, ASTM-E 436 and 'Pellini'
Key features:
Very robust construction stands up to the rigours of high energy testing to provide high reliability with a minimum of downtime.
Easily interchangeable contact parts simplify maintenance and reduce cost of ownership.
State-of-the-art testing accommodates impact energies up to 100,000J and specimens up to 50mm thick.
Very high levels of safety employing multiply redundant systems, compliant with 89/392/EEC and 91/368/EEC machinery safety directives.
Automated specimen loading provides compliance with cycle times required by test methods, while maintaining operator safety.
Very rigid base and anvils ensures very low flexure under high test loads.
Guided mass system to ensure that the impact geometry is correct throughout the entire test.
Highly accurate and repeatable drop parameters.
High quality, easy to use control software ensures consistency and enhances throughput.
Optional instrumentation package to measure impact force up to 1500kN.
Provides values for peak force and energy to fail, together with a high resolution force-deflection curve to analyse failure mode.
Optional variable mass system to provide precise control over impact parameters.
Optional high speed, fully integrated video system to provide visualization of specimen failure mode.
Optional liquid cooled temperature conditioning bath.
Responsive life-time technical support.
|
|
Features
·Adjusting impact energy by adjusting the lifting height and mass of the weights.
·The buffer is equipped to absorb the residual energy after breaking the specimen to protect
the weight and anvil from destroying. Also install the safe outfit, such as safety net, safe pin for
maintenance and hanger locking.
·Equipped with the specimen-carrying outfit, anti-falling of outfit for the specimen, centering
outfit to guarantee quick, accurate and reliable tests.
|
|
Hualong WCJ Series is mainly used for drop weight tear test (DWTT) of Ferritic Steels, to observe specimen fracture surface after impact within the temperature that fracture type is converted from non-ductility to ductility. This test method is that striker with some weights is raised to some height then released. Free drop striker impacts and tears the specimen. After impact, observe shape and features of fracture surface.
This testing machine accords with the relevant requirements of Standards for DWTT such as: Metallic materials－Drop-weight tear tests of ferritic steels (GB8363-87), ASTM E604, Metallic materials－Dynamic tear testing method (GB5482－93), ASTM E 436-1991(Re1997) and APIRP 5L3-1996.API-5L3, EN 10274, ASTM-E 436
Capacity: 30000J/40000J/50000J
|
|
|
|
