Conflict of interests:

Output – quality – weight

Risse + Wilke is the recommended partner for precise cold-rolled products if you are working on balancing these conflicting interests. For the development of these custom-fit solutions, we pick up the thread just where the finished product ultimately has to prove itself in everyday use.pannungsfeld:

Influencing factors

Procedures - processes - material selection

At Risse + Wilke, the selection of optimal materials results from the interaction of the applied manufacturing procedures and techniques in your company and the possible downstream manufacturing steps of your customers. By considering the influences from the preliminary stages of steel production and the hot strip rolling, Risse + Wilke produces exactly what you can expect from custom-fit cold strip products.

Advantages:

Individual – perceptive – co-operative

More emerges from dialogue than from the confinement of a single mind. Risse + Wilke relies on interdisciplinary development in the team and working together in partnership for joint success. This way the durability and the quality of your products are maintained high and the innovative potential of your company is realised.

 

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Stamping - fine blanking – forming of sections - bending - folding

The interrelation between processing steps and steel grades is a significant influencing factor on quality and economy, particularly when several procedures take place in sequence. Elastic recovery of the sheets, cracks in stretched outer fibres, insufficient smooth-cut content and tool wear, work against the desire to produce completely smooth, crack-free and ready to install parts - combined with long life cycle of the tool of course.

What is exceptional about forming grades produced by Risse + Wilke becomes apparent when looking at the specifically achieved cold strip properties. They are precisely tailored for the high demands of the various forming procedures. The quality advantage of the Risse + Wilke range of grades lies in the finely balanced know-how mix between chemical analysis, annealing and rolling; from low carbon cold strips to case hardening and tempering steels, all the way to critical spring steels.

With Risse + Wilke cold strip products you are actively working against process hurdles. To promote your efficiency, your zero-defect strategy and to secure your competitive strength.

 

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Deep-drawing - ironing - stretch forming - collar forming - spinning

The sheet metal requirements for deep-drawing, ironing or collar forming are not only highly demanding, but almost complementary. On the one hand, the material must flow from the blank into the desired form very precisely and without thickness reduction. On the other hand, uniform thickness reductions are desired and required on the drawn part.

In connection with the subtleties of the cold strip manufacturing process, nuances in the chemical composition can already make a decisive difference, to whether undesired earring formation, cup base fracturing, fold formation, orange peel or ovality can be avoided.

In the influential factors: selection of the chemical analysis, specific rolling reduction and tailored heat treatment, you will find the know-how advantages Risse + Wilke provides for your daily processes.

In order to accelerate forming at increased press passes, Risse + Wilke produces homogeneous, soft and flow-able grades with a specific surface roughness for the absorption of drawing agents.

 

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Upsetting - stamping - punching - indenting - extruding

Production steps such as stamping, upsetting, punching, indenting or extruding, which are usually preceded by other forming processes, require particular flow capacities from the cold rolled strip. The sheet metal must be able to cope with these generally downstream forming processes so well, that the material flows crack-free, precisely and uniformly into the desired part geometry.

Flowability effects dimensional stability: A high quality solution for this is high carbon cold rolled strip from Risse + Wilke with >95% spheroidisation. They have proven themselves to be outstanding when difficult upsetting and stamping works demand high precision. In line with the high requirements of ISO/TS 16949.

Risse + Wilke is more than happy to provide advice and support on a personal basis. We will also gladly work jointly towards shortening your development times or increasing your flexibility for variant management. We take pride in our continuous excellent appraisal by our customers.


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