Measuring / Proving

With the in-house Wenzel measuring centre LH20 / 30 / 15, we offer you measuring equipment for gearings which is unique to the region of South Baden due to its dimensions (measured displacement X = 2,000, Y = 3,000, Z = 1,500, load-bearing capacity nominal 8 tonnes) together with the range of rotationally symmetrical and prismatic components. The measuring techniques for gearings and the options for 3D measuring technology are combined in the Wenzel system, offering innovative and versatile measuring options at the highest technical level.

Klingelnberg P 40
max Ø 400 mm
measurement of gearings

Measurements of in-house productions and outsourced measurements

As well as measurements of in-house productions, we also offer measurements for external producers. Individual and series components can be measured by us and you receive the necessary test records if needed.
Documentation / measuring records can be requested in writing when the assignment is allocated.

Loop fire testing

Magneto-elastic method according to Barkhausen (magnetic Barkhausen effect). In this procedure, an electro-magnetic sensor is guided over the workpiece and the local changes of the alternating magnetic field are electronically evaluated. The Barkhausen noise analysis can be used on ferromagnetic materials like most ferritic steels, iron, nickel and cobalt. The tests can even be carried out through thin non-iron coatings such as chromium.

Crack Testing

The surface crack test is used to make errors in metallic materials, which are open to the surface, visible to human eyes.

Conditions for the test
The test pieces must be free from grease and particles and be dry. Adhesive reaction products (such as casting skin, rolling skin) must be mechanically removed before the test (e.g. through grinding or brushing).

Dye Penetrant Test (PT testing)
The penetrant test is one of the surface test procedures, in which material separation on ferromagnetic materials can be visualised for the human eye using the “capillary effect” that underlies the procedure. The material separations must be open to the surface during this procedure.
The procedure is standardised in materials testing as per DIN 54 152.
Use with non-destructive inspection for cracks and near-surface imperfections under building site conditions on components in steel, bridge and container construction. The procedure is used primarily with metallic materials, but can also be used for other non-porous materials.

Magnaflux Testing (MT testing)
Magnaflux testing, also known as MT testing or magnetic particle testing, is a procedure to detect cracks in or near the surface of ferromagnetic materials.
During the magnetization of a ferromagnetic material, the magnetic field lines are guided into the best magnetically conductive material, as they search for the lowest resistance. If the magnetic field lines come across a poor magnetically conductive area, such as a crack, then a change in flow direction is triggered by the high magnetic resistance. This creates a leakage flux on the surface, which causes a cluster of ferromagnetic particles, allowing the surface defects to become visible.
During the magnetization of the material, magnetisable particles are applied to the surface of the test piece for testing. These are guided over the leakage flow along the crack geometry by the applied magnetic field. The magnetisable particles are optically highlighted due to being surrounded by (if applicable, fluorescent) dyes, which makes them recognisable.

Hardness Testing

We carry out the following hardness testing procedures.
Rockwell (C) 
The Rockwell C hardness test is applicable for metallic materials (hardened steels and alloys, hard metals), whose hardness is between 20 and 70 HRc.
In comparison to those already mentioned, this test procedure does not define hardness as a rate of force through the surface area of indentation. Instead, this is defined through the depth of penetration.

Vickers (HV) 
The Vickers hardness test is used for metallic materials (hardened steel, hardened surface layers, structural constituents) with very low to very high degrees of hardness.
Furthermore, this test is suitable for small and thin samples. The test procedure is the same as with Brinell, with the difference that a blunt equilateral pyramid made of diamond is used as the penetrator instead of a sphere. The measurement is the diagonal d of the indentation, from which the hardness can be calculated.

[Translate to EN:] Brinell (HB) 
The Brinell hardness test is applicable for metallic materials (annealed and tempered steel, light / heavy metals) up to a Brinell hardness of no more than 450 HB. A sphere of hard metal with a standardised diameter of 10, 5, 2.5, or 1 mm (depending on the thickness and hardness of the work piece) is pressed vertically into the material with a defined test force F and the diameter of the sphere indentation created in the surface is measured. The Brinell hardness HB is then calculated as a ratio of the test force F and the surface A of the indentation.