Contract hardening

Experience is what counts

Contract hardening

We at ILMBERGER have been involved in the heat treatment of steel for over 60 years. With our modern multipurpose-chamber furnace we are capable of performing a wide range of heat treatments – from hardening, tempering and carburisation to quenching and low-stress annealing. Even processes such as nitriding in a salt bath and scale-free annealing are possible in our retorts on a contract basis.

As a speciality we also offer you hardening on the mandrel in order, for example, to guarantee the geometry of ring gears with internal toothing.

In order to be able to guarantee our customers a constantly high quality, we continuously invest in our extensive measurement and control equipment. With the aid of a wide variety of measuring methods it is possible for us to prepare the optimum customer-specific and part-specific documentation for you. This way, for example, we can determine the material quality using a mass spectrometer. Our hardness measuring devices operate according to the Brinell, Rockwell and Vickers methods and we are naturally certified according to DIN EN ISO 9001:2008.

Our services in the field of contract hardening include:

  • extensive documentation tailored to your product

  • very flexible treatment time

  • blasting of the hardening stock

Our heat treatment methods at a glance

<strong>Type of heat treatment</strong> Max. lot dimensions <br />(L x W x H in mm) Max. lot weight
<strong>Case-hardening in the multipurpose-chamber furnace</strong> 900 x 500 x 700 300 kg
<strong>Carburisation in the multipurpose-chamber furnace</strong> 900 x 500 x 700 300 kg
<strong>Tempering (hardening & quenching) in the multipurpose-chamber furnace</strong> 900 x 500 x 700 300 kg
<strong>Annealing in the multipurpose-chamber furnace 900 x 500 x 700 300 Kg
<strong>Annealing in the retort (with scale protection)</strong> ø 600 x 1000 150 - 250 kg
<strong>TF1 (nitriding in a salt bath)</strong> ø 550 x 1000 150 kg
<strong>Rotary-hearth furnace</strong> on enquiry

Do you have any questions or requests regarding contract hardening? Contact us.