Impact acc. to Wegner - Senze-Instruments

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Process & Quality Control

Impact acc. to Wegner

Coatings & Industry > Mechanical properties > Flexibility and toughness
Impact Tester acc. to Wegner, Model 305

Purpose and Application
The Impact Testing Device - Wegner type,
Model 305, is an indispensable aid for testing enamelling in accordance with DIN 51 155.
This practical and handy testing device, which can easily fit into every briefcase, avoids troublesome dismantling and transport.
It can be used outside the laboratory or the workshop for testing purposes.
Objects can therefore be tested on location and in the position in which they happen to be and where they are in use.
This is the only way to test certain parts of enamel surfaces at all, as they are otherwise inaccessible with large and cumbersome testing apparatus.


Standards               
  • DIN EN 438-2
  • DIN ISO 4532
  • ISO 4532
  • ISO 4586-2
Execution of Test
In order to set the testing device, the handle is turned until the desired testing force is achieved.
This is read on the lower longitudinal scale from 0 - 90 N and the interim values of 1 N on the scale at the girt of the handle.
As a comparison, the approached values are shown on the upper scale in Nm, any interim values are to be estimated.
When the spring is tensioned, the impact bolt must be pushed back until it locks into the trigger.
When testing, the device must be held vertically on the surface to be tested with the point resting on the enamel surface.
On flat surfaces the point of the device and the two legs will form a triangular setting.
If the legs cause problems on uneven surfaces, they can be twisted away or removed, if necessary.
To do this the three small knurled screws must be released.
When edges are to be tested, they are laid into the vertically superimposed grooves at the point.
The test objects should be positioned as close as possible to the real situation.
Particularly in the case of smaller and light objects care must be taken that they are not clamped tightly.
By pushing the trigger lever, the impact bolt is released for testing.

CAUTION!
With a test force of 30 N and more, the impact bolt should not run ahead without a test object being used, but should always hit an object.
Technical Data

Measuring range:                        0 - 90 N infinitely variable
Ball diameter:                                5 mm
Length of the instrument :     245 mm (not under tension)
Weight, net:                                    Instrument approx. 340 g
Tension device :                             mechanic
Trigger:                                               mechanic

Impact Tester acc. to Wegner, Model 305 - including support

The Model 305 is also suitable for impact tests on plastic surfaces using a special support for this testing purpose (the support cannot be ordered separately).

DIN 51 155, including support* according to DIN 53 799
Technical Data

Measuring range:                        0 - 90 N infinitely variable
Ball diameter:                                5 mm
Length of the instrument :     245 mm (not under tension)
Weight, net:                                    Instrument approx. 340 g
Tension device :                             mechanic
Trigger:                                               mechanic

Stand for tests on enamel approx. 25 g
Support (120 mm dia.) for tests on plastics approx. 3000 g
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