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Stainless steel

When it comes to material technology, Rieber focuses on producing precision parts, primarily made of stainless steel, with highly complex technology. In addition to stainless steel being hygienic, food-safe, odourless and dishwasher-safe, it is also robust and is therefore not only an ideal material for commercial kitchen technology but also for other industrial applications. 

Ideal material
  • hygienic and antibacterial
  • food-safe and colour-fast
  • sturdy and durable
  • robust and temperature-resistance
SWISS-PLY multi-layer material

When direct temperature transitions are relevant, Rieber provides the crucial difference when it comes to efficiency and food quality with the highly functional thermal SWISS-PLY multi-layer material. With the internal aluminium core between two stainless steel layers, the SWISS-PLY multi-layer material achieves up to 10x better conductivity compared to pure stainless steel. Thanks to this robust material combination, significant energy efficiency can be achieved regardless of the application, as the heat/cold supplied is distributed quickly and evenly to all corners and edges, alongside the existing hygienic material advantages of the stainless steel.

In addition to thermal energy efficiency, the multi-layer construction offers tremendous stability due to the solid material bond. As a result, panels and other deep-drawn components made of SWISS-PLY material combine thermal and static advantages, which means that the material for lightweight applications also enable energy savings in addition to weight and transport cost savings.

The SWISS-PLY material can be used with direct contact heat on any energy source in the catering application (gas, induction, etc.), as well as in all thermal appliances. In addition to the highly efficient conductivity of externally supplied energy, the material itself can be fitted with a built-in energy source during production. In this process, round heating coils are rolled into the inside of the material, thereby generating the energy directly in the material. This immediate energy transfer reduces the energy loss to a minimum. For built-in applications in technical equipment, this saves the separate and individual installation of heating elements, generators, insulation, etc., thereby reducing installation costs and damage. 

The highly efficient solution with SWISS-PLY multi-layer material

Process technology

This includes classical processes, such as joining, annealing, welding, cutting and surface finishing as well as complex professional forming and the deep drawing of stainless steel. This core competence is a prerequisite in order to be able to create hygienically perfect “dematerialised” products across all business segments.

Technical products from Rieber – technology solutions are hereby used in almost every industry in which the technical processing of stainless steel plays a role.  But above all in the commercial kitchen, automotive, medical engineering, chemical and aerospace industry.

seit 1925

We shape function with quality.

Rieber combines this material technology with its many years of experience in stainless steel workmanship through process technologies, whereby stainless steel can be further processed for a wide variety of industrial applications. 

Process technology - we form ideas.
Professional Forming.

Large-scale. Asymmetrical. Extreme.

Rieber has also specialised in deep-drawing special sheets, minimum sheet thicknesses or sandwich materials.

 

01 Deep-drawing with tools

Deep drawing – mould and counter-mould
State-of-the-art, CNC-controlled, hydraulic presses with a pressing force ranging from 30 t up to 2000 t. Our sophisticated technology even enables the production of large-surface, asymmetrical end extremely deformed components. The deep-drawn part is the result of an exactly calculated and simulatable production process, where deep-drawing and annealing work steps may alternate repeatedly.

02 Hydromechanical deep-drawing

Water-cushioned deep-drawing
Hydromechanical deep-drawing is a variation of the classic drawing method. In this process, the female mould is replaced by a pressure-controlled water cushion. The lowering die of the upper tool part presses the sheet on a water cushion, pulls it along while immersing, thus producing the required part geometry exactly. 

Due to the distributed pressing of the sheet on the die by the medium, the location of the critical drawing range is shifted from the bottom of the workpiece toward the drawing radius. In this way, higher drawing ratios can be realised compared to the classic drawing method. As an additional advantage, manufacturing costs are reduced due to the relatively low space requirements.
 

Joining.

Our welding technology
to suit your requirements.

Our internal equipment design enables the required result to be achieved quickly whilst ensuring highly accurate, thus ensuring 100% hygienically safe joining at the same time.

 

01 TIG welding, MIG welding, MAG welding

Whether WIG, MIG or MAG welding, we customise all standard welding methods to your specific requirements at Rieber. The method bears a number of advantages compared to other fusion welding methods. In combination with TIG pulse welding and TIG alternating current welding, any material can be joined, provided that it is suitable for fusion welding.

In the case of TIG, spatter is practically eliminated; the health impact caused by welding fumes is kept relatively low. A special advantage of TIG welding is the fact that no melting electrodes are used. The addition of filler material and the amperage are uncoupled from one another as a result. The welder can ideally adjust the welding current to the welding task and must only add as much filler material as is actually required. Thus, the method is especially suitable for welding root runs and welding in constrained positions. Thanks to the relatively low and small-area heat input, the welding delay is lower than in the case of other methods.
Due to the high weld qualities, TIG-welding is primarily used in applications where welding rates are less important than quality.

In the metal active welding (MAG) method, either pure CO2 or a mixed gas composed of argon and low portions of CO2 and O2 (Corgon) are used. Depending on the composition, the welding process (fusion penetration, droplet size, spatter losses) can be influenced actively; in the case of metal inert gas welding (MIG), inert gases argon or (less infrequently for cost reasons) helium are used. The MAG method is used primarily for welding steel, MIG welding is primarily used for NI metals.

02 Laser welding

Laser beam welding is mainly used for welding components that have to be joined with high weld quality and low thermal distortion. Rieber specialises in welding the thinnest sheet thicknesses in a reliable manner.

03 Resistance welding

In this process, the stainless steel is heated by electrical energy until it melts. A close connection is established during resistance pressure welding by pressing the materials together during and after the current flow.
Rieber offers spot welding and roll seam welding.

Annealing.

Take advantage of one of the largest annealing furnaces in Germany.

 

01 Bright annealing

Using one of the largest bright annealing furnaces in Germany, Rieber is able to produce deep-drawing parts with extreme deformations. The advantage of bright annealing compared to conventional annealing is the fact that stainless steel keeps its full brightness.


Working temperature: 1070 °C in an inert gas atmosphere.

Largest part dimension: 790 x 400 mm (W x H).

Cutting.

Flexible, three-dimensional and exact.

 

01 Laser cutting

State-of-the-art 3D lasers enable highly precise cutting edges at a maximum working range of 4000 x 2000 x 900 mm (L x W x H) and a power output of 3200 W.

02 Cutting tools

State-of-the-art eroding technology and TIN-coated tooling parts enable difficult part contours and a long cutting tool service life.

Surface finishing.

In response to the high hygiene requirements to be met in the large-kitchen segment, Rieber has acquired a wide range of surface processing skills.

Whether stainless steel, nano surface treated, coated0, enamelled or electropolished, at Rieber you will find the right surface for any application.

01 General methods

  • All finishing touches
  • Welding
  • Polishing
  • Etching
  • E-polishing

02 Sandblasting / glass bead blasting

To cover additional surface treatment methods, we have been cooperating with trusted partner suppliers for many years. In this way, we can offer decades of experience in the fields of sandblasting and glass bead blasting. Glass bead blasting compacts the surface, which increases the surface hardness and service life. A targeted use of glass bead blasting can also increase the non-stick effect. Sandblasting is used for surface cleaning as a preparatory step for subsequent coating, for example.

You would like to
know more about our products?

Your contact
Johannes Heller

You would like to know more about our products and the Rieber SWISS-PLY multi-layer material? I will be happy to help you.

Johannes HellerDigitalisierung & Automatisierung
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