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Structural Bonding Requirements, Adhesives and Applications

Structural Bonding Requirements, Adhesives and Applications
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Structural Bonding Requirements, Adhesives and Applications

Product catalog summary
Introduction to Adhesives in Industrial Production
Adhesives have become a crucial component in industrial assembly, offering superior performance compared to traditional methods like screws, rivets, and welds. They enable weight and energy savings, making them suitable for applications in mechanical engineering and heavy-duty structures.

Types of Adhesives and Their Applications
  • DELO-ML: Suitable for metal bonding, offering fast curing and resistance to media and temperatures.
  • DELO-MONOPOX: High-strength bonding with excellent mechanical properties, used as an alternative to riveting and welding.
  • DELO-PUR: Ideal for bonding metal and plastic, providing high strength and suitability for large gaps.
  • DELO-DUOPOX: Designed for large or temperature-sensitive components, offering high media resistance and mechanical properties.
All products are solvent-free and comply with the RoHS Directive.

Design Considerations for Adhesive Bonding
Effective adhesive bonding requires proper design to prevent costs, speed up production, and expand adhesive options. Key design principles include providing large bonding surfaces, distributing tensions evenly, and avoiding stress concentrations.

Surface Preparation Techniques
Surface preparation is vital for bond strength and durability. Techniques like DELO-SACO sand blasting and DELOTHEN cleaners ensure surfaces are clean and ready for bonding.

Applications and Case Studies
  • Lightweight Construction: Bonding in lightweight hybrid constructions, such as storage machines, offers advantages like reduced weight and energy savings.
  • Pressure Gauges: Bonding is used to join spiral elements to brass housings in fire extinguisher pressure gauges, providing resistance to aggressive media.
  • Wheelchairs: Bonding different materials in lightweight wheelchairs enhances mobility and stability.
  • Aerospace: DELO adhesives are used in space applications, such as the ROKVISS project, for bonding motors and components.

Conclusion
Adhesives offer versatile and efficient solutions for various industrial applications, providing high strength, resistance, and design flexibility. Proper design and surface preparation are essential for maximizing their benefits.
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Catalog excerpts

Structural Bonding Requirements, Adhesives and Applications-1

SUPRATECSVNEO DELO Ce document vous est fourni par SUPRATEC SYNEO, partenaire exclusif de DELO en France www.supratec-syneo.com Structural BondingRequirements, Adhesives and Applications Bonded cogwheels on a gear shaft

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Structural Bonding Requirements, Adhesives and Applications-2

Bonding of carbide elements to produce saw blades: high resistance to elevated temperatures and media up new design possibilities Adhesives have become an essential assembly element in industrial production, and perform a multitude of functions. Comparable performance can be achieved with no other joining technique. Numerous tests have proven the superiority of adhesives over screws, rivets and welds. In addition, a great deal of weight and therefore energy can be saved by using adhesives. Therefore, bonding technology is now used in fields where adhesives would have been unimaginable only a...

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Structural Bonding Requirements, Adhesives and Applications-3

Selection Charts „DELO-ML“ „DELO-DUOPOX, DELO-PUR“ „DELO MONOPOX“ for structural bonding... ... are ideal for many applications and requirements: Methacrylate  Especially for very large or temperature-sensitive components  Easy, “one-component” processing in the DELO-AUTOMIX system  High media resistance  Good mechanical properties  For bonding components with high strength requirements For metal bonding and metal/mixed joins Some products are light- or UV-curing Easy, one-component processing Fast initial strength within a few minutes (anaerobic curing) or seconds (UV / light fixation)...

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Structural Bonding Requirements, Adhesives and Applications-4

Adhesive-friendly design of bonded connections In order to be able to fully exploit the advantages of adhesives, the design of the join must match bonding technology. Proper design of the components for bonding can ■ Speed production processes, and ■ Expand the range of suitable adhesives. ■ Provision of sufficiently large bonding surfaces ■ Even distribution of tensions ■ Only compression, tensile and shear stress if possible ■ Avoiding peel and bending stress ■ Avoiding eccentric force transmission ■ Avoiding plastic component deformation ... and adhesive-friendly design of bonded connections...

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Structural Bonding Requirements, Adhesives and Applications-5

The coated DELO-SACO PLUS corundum grain hits the component surface. DELO-SACO blasting technique The impact cleans the surface and increases the roughness depth. As a result of the impact, parts of the coated grain are inserted into the surface (tribochemical effect). The grain rebounds, the coating remains. Surface pretreatment It is not only essential to choose the right adhesive. The finish of the component surface is also of great importance for the achievable bond strength, and even more so for the durability of the bond. In general, the surfaces to be bonded are to be dry, as well as free...

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Structural Bonding Requirements, Adhesives and Applications-6

High structural strength at storage and retrieval machines Light-weight construction Light-weight hybrid construction is highly valued in mechanical engineering applications, such as the storage and retrieval machine shown. This increases acceleration, boosts stock rotation and saves energy. The framework made of aluminum or steel (corner connectors) and fiber composite material (channel bars) are bonded. Advantages over other joining methods:  Natural low weight of adhesives  Laminar force transmission enables thinner structures High requirements Outstanding strength and reliability of the...

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Structural Bonding Requirements, Adhesives and Applications-7

Unmounted pressure gauges from FT Manovia extinguisher pressure gauges New materials require new joining methods Many fire extinguishers are equipped with pressure gauges, allowing users to check at any time whether the pressure in the container is still in the “green zone”. A crucial factor here is to connect the spiral element to the brass housing. Since recent fire extinguishing agents aggressively attack the spiral elements that used to be made of copper and bronze, stainless steel is now being used. However, this made soft soldering an unsuitable method for joining spiral element and brass...

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Structural Bonding Requirements, Adhesives and Applications-8

Lighter and more comfortable wheelchairs Multi-material design Lightweight wheelchairs provide for independence, mobility, and flexibility in everyday life. With a weight of just 21 kg, the active wheelchair LEVO Summit EL is the lightest wheelchair with electric stand-up function available on the market, and particularly impresses with its excellent stability for a secure upright position. This low weight can also be attributed to bonding: no other technique is so well suited for joining different lightweight materials. In the case of the LEVO wheelchair, not only the carbon and aluminum parts...

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Structural Bonding Requirements, Adhesives and Applications-9

ISS International Space Station with ROKVISS (© NASA) Rotor: DELO MONOPOX bonds the magnets to the stator (© DLR) Epoxy resin keeps motors together DELO adhesives are used in space – in the aerospace project ROKVISS (Robotic Components Verification on ISS). ROKVISS consists of a robotic manipulator with two hinges, a camera that follows the movements of the robotic manipulator and another camera that observes Earth. So that the robotic manipulator can move flexibly, it is equipped with two hinges driven by motors. DELO developed the epoxy adhesive that holds these motors together. Not only are...

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Securing screws in differential gears O 2 - 4 0.3 Pas DELO-ML 5327 ■ High-strength connection ■ Excellent media resistance ■ Normal temperature range from - 60 °C to +200 °C ■ Accelerated curing in combination with DELO-QUICK enables short cycle times ■ For high force transfer Bonding steel stator to housing DELO-ML DB135 ■ Very high impact resistance ■ Excellent media resistance (for example, to oil, gasoline, diesel) ■ Normal temperature range up to +180 °C ■ Tension-equalizing: High-strength bonding of metals with dissimilar coefficients of expansion ■ Prompt handling strength with the help...

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Structural Bonding Requirements, Adhesives and Applications-11

DELO-DUOPOX AD895 ■ Fills gaps, suitable for small and large bonding gaps ■ Good media resistance and aging resistance ■ Efficiency: Flexible modular system in banister construction. The additional process steps required for welding, such as grinding or polishing, are avoided. Bonding of banister elements for interior and exterior use DELO-DUOPOX AD894 ■ High bond strength and temperature resistance ■ Good media resistance ■ Design advantages over screwed joins, mechanical advantages due to the laminar bond Bonding a bearing into a plastic housing (adhesive colored magenta) Sealing housings DELO-PUR...

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