Efficient engine production with the latest generation of the LZH IBK

The latest internal processing laser head (IBK) from the LZH is characterized by an integrated process monitoring and easier handling. (Image: LZH)

The latest internal processing laser head (IBK) from the LZH is characterized by an integrated process monitoring and easier handling. (Image: LZH)

Aluminum engine blocks are significantly lighter than their conventional cast iron predecessors. However, in order to make them durable, the cylinder surfaces must be lined with a wear-resistant coating. The internal processing laser head (IBK) developed by the Laser Zentrum Hannover e.V. (LZH) can be used to prepare the inner surfaces of the cylinder. The IBK is already used in in series production, the new generation R7 has now been delivered.

The IBK was further developed in close cooperation with the customer. In the new IBK R7, the sensor technology for monitoring the process monitoring is fully integrated, and system is much easier to use than its predecessors. In addition, the radiation path has been optimized to prevent soiling.

Rotating laser beam structures the aluminum surface
The IBK consists of a spindle with a rotating beam deflection element attached to the end. During the processing, a focused laser beam emerges from the end. The spindle lowers into the bore and the end of the spindle rotates together with the deflection element. In this way, trench-like structures are introduced into the surface that is to be roughened. A special cleaning step after roughening and before coating, such as after corundum blasting, is not necessary. Since the IBK works virtually wear-free, laser roughening is superior to conventional machining processes.

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Laser Zentrum Hannover e.V. (LZH)

As an independent, non-profit research institute, the Laser Zentrum Hannover e.V. (LZH) stands for innovative research, development and consulting. The LZH is supported by the Niedersachsen Ministry of Economic Affairs, Employment, Transport and Digitalisation and is dedicated to the selfless promotion of applied research in the field of photonics and laser technology. Founded in 1986, over 170 employees are now working for the LZH.

The focus of the LZH lies on the fields of optical components and systems, optical production technologies, and biomedical photonics. Interdisciplinary cooperation between natural scientists and mechanical engineers makes innovative approaches to challenges from the most different areas possible: from the development of components for specific laser systems to process developments for the most diverse laser applications, for example for medical technology or lightweight construction in the automotive sector. Eighteen spin off companies have emerged from the LZH up to now. Thus, the LZH has created a strong transfer between fundamental science, application oriented research, and industry.