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Mechanical engineering

Mechanical engineering

Adhesives also enjoy great popularity in mechanical engineering and plant construction, although manufacturers so far have often counted on traditional joining technologies such as screwing, riveting, or welding. Adhesives open up new design possibilities, save weight and therefore energy, and withstand various stress types. A wide range of adhesives is available, ranging from one- and two-component epoxy resins to methacrylates and polyurethanes. Application areas include bonding of e-motors, bonding of banister elements, securing of screws, and many more.

Both an adhesive-friendly design and the nature of the component surface are important for a join’s bond strength and long-term resistance. DELO offers a multitude of surface pretreatment methods. These prepare disparate materials for bonding, such as metal, plastic, ceramic or difficult to bond materials.

Case studies

Bonding of electric motors
Bonding of electric motors

The engine developer and manufacturer EBM-Papst bonds steel stators to aluminum housings. They use these assemblies in electric motors of the new modular ECCI drive series. These high-performance multi-pole drives reach a very high torque in a small amount of space.

The tension-equalizing DELO-ML DB135 adhesive used gives better strength in torque tests than the previously used product. Bonding with it could be successfully qualified as a reliable and durable joining method even at high torque.

The adhesive combines an elongation at tear of 30 % with a temperature range of use up to +180 °C. What is more, it has higher extruding forces and adheres very well to a smooth metal surface. Therefore, the complex process step of surface roughening can be omitted. In advance, numerous tests have been conducted in DELO’s labs and by the customer. For example, the bonded electric motors were aged in temperature change tests (-40 °C to +120 °C, 15 cycles).

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Bonding of magnets into stator housings
Bonding of magnets into stator housings

DELO’s adhesives are used to bond magnets into the stator housing made of zinc-plated steel for electric motors. In this case, the DELOMONOPOX epoxy resin was chosen thanks to the strengths it achieves on magnet and zinc-plated steel.

In addition, the adhesives gives high impact resistance, equalizes tension, and can be used at temperatures up to 200 °C. One-component heat-curing epoxy resins are mainly used when bonding temperature-sensitive components. Since they also cure in thick layers, they are excellent to bridge gaps.

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Bonding of banister elements
Bonding of banister elements

DELO’s adhesives join banister elements for interior and exterior use. A great variety of cuts is required in banister construction. Welding is often not possible. DELO-DUOPOX is used as a time-saving and age-resistant alternative.

The adhesive makes possible a flexible modular system in banister construction. Additional work in the form of grinding or polishing after welding is omitted. The adhesive bridges gaps and is suitable for both small and large bonding gaps. In addition, it is resistant to chemicals and aging.

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Contact

DELO Industrial Adhesives
DELO-Allee 1
86949 Windach, Germany

+49 8193 9900 - 0

+49 8193 9900 - 144

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