In mechanical engineering, various adhesives are used to create constructions. Examples include bonding with adhesives, surface sealing and thread sealing. Below you will find an overview of the most common applications and corresponding products. Do you have another question about adhesives suitable for mechanical engineering? Contact us for a customized recommendation!
Directly to: Metal to metal bonding | Plastic to plastic bonding | Metal on plastic bonding | Thread securing | Plan sealing | Bearing and bushing bonding | Minor repairs
Metal to metal bonding
Our construction adhesives are developed on the basis of polyurethane (PU). This PU adhesive is widely used in mechanical engineering mainly due to its strength, excellent adhesion to metals and robustness. It can be used excellently for power bonding metals such as aluminum, stainless steel, galvanized steel and copper. Our range includes a diverse selection of construction adhesives from NPT, Frencken en Technicoll suitable for metal on metal applications.
MMA adhesive is also suitable, for example, for joining metals. This type of adhesive is resistant to high and low temperatures and the action of acids/solvents. Additionally, the product is long-lasting, providing an adhesive solution with rapid force transfer due to the flexibility of the adhesive structure. MMA adhesives also have good resistance to dynamic loads, which is very useful in mechanical engineering applications. Our MMA product range includes, for example, the Technicoll 9403 MMA lijm.
Gluing plastic to plastic
Plastics such as ABS, polycarbonate (PC), polythene (PE), acrylic glass (PMMA), and polypropylene (PP) are commonly used in mechanical engineering. These adhesives are all thermoplastic polymers, which means they have the property of being meltable. As a result, they are temperature sensitive, and thus, it is important to choose the right products.
Cyanoacrylate adhesive products, also known as “instant adhesives,” provide excellent performance and are well suited for gluing difficult materials such as plastics. Lijm Partner markets several variations of cyanoacrylates: for example, we have products that have exceptionally low odor levels, such as Technicoll 9508. The bond strength of the joint can be further improved with the use of Bondtack Plastic Primer. In addition, the cure of cyanoacrylate adhesives can be increased (in the case where rapid initial strength is required) by using an activator such as the Technicoll 9601. This is because cyanoacrylate adhesives do not always dissolve in a matter of seconds. An activator should be used in the case of unfavorable conditions, such as dry air or low temperatures.
Alternatively, MMA adhesives can be used for bonding thermoplastics. MMA adhesives require minimal surface preparation, and also vertical surfaces does not result in leaking. This type of adhesive is particularly long-lasting, providing an adhesive solution with rapid force transfer due to the flexibility of the adhesive structure. MMA adhesives have good resistance to dynamic loads, which is very useful in mechanical engineering applications. Our product range includes, for example, the Technicoll 9403 MMA glue.
Gluing metal to plastic
People bond metals such as aluminum, copper, brass and steel to make special strength joints with plastics. The applications are diverse and are used to replace mechanical alternatives such as bolts, nuts and welds.
Our Epoxy adhesives and MMA adhesives are structural products that can be used for bonding plastics and metals by mixing these two components in a static mixer. Because of this method, the adhesive hardens relatively quickly. The result is a chemically resistant and highly flexible connection. To process the Epoxy and MMA adhesive, we recommend using the DuoMixgun.
In addition, cyanoacrylate adhesive is very suitable for bonding small, well-fitting parts of metal and plastic. Technicoll 9556 cyanoacrylate adhesive is ideal for this application because it is thin liquid.
Thread securing
Anaerobic adhesives are frequently used to secure threads. These adhesives consist of acrylic polyester monomers, which means that the bond is formed by polymerization of the monomers. Anaerobic means “without air’’. The name shows how this process occurs, which is by excluding oxygen. An advantage of threadlockers is that they reduce repair and production costs by preventing loosening, corrosion and component seizing.
Our Bondtack Borg series is ideally suited for securing a threaded joint. These anaerobic adhesives have a low viscosity that allows them to completely fill the clearance between matched threads. The locking agent is available in the colors dark blue (Bondtack Borg 130-001), red (Bondtack Borg 130-002) and green (Bondtack Borg 130-003). Products are available upon request.
Flat seal
Another common adhesive application in the mechanical engineering industry is surface sealing. for surface sealing, our product range includes Bondtack Borg 130-006: a 1-component product which cures through metal contact and oxygen. This product is directly applicable to various dimensions and metals, and ensures a quick bond due to a short drying time. The flat sealant also resists impact loads and the stresses caused by thermal expansion when joining different materials.
In addition, the
Technicoll 9431 polyurethane adhesive is also ideal for flat seals due to the paste-like consistency of the adhesive. The result is a flexible connection with an excellent damping of shock, noise and vibration. Technicoll 9431 has an outstanding resistance to weathering and aging, and is therefore highly suitable for permanent surface seals.
Gluing bearings and bushings
Adhesive is also used for fixing bearings, bushings and cylindrical parts in housings and on shafts. This optimizes power transmission, enables uniform pressuredistribution and prevents friction corrosion and fitting rust.
The Bondtack Borg 130-004 is a methacrylic ester-based product specially developed for securing a bearing-bush connection. This sealant has a high ease of use and is applicable to various types of metal. It is also suitable for rapid production applications, and is resistant to exogenous influences such as humidity and vibrations. This product is available upon request.
MMA adhesives are also known for providing good resistance to dynamic loads, which is very useful in mechanical engineering applications. Furthermore, the product is long-lasting, providing an adhesive solution with rapid force transfer as a result of the adhesive’s flexible structure. An example of such product is the Technicoll 9411 MMA glue.
Finally, also a PU adhesive is suitable for securing bearings and bushings. The flexibility of Technicoll 9431 polyurethane adhesive is very suitable for mechanical engineering applications, since it provides excellent shock, noise and vibration damping. For faster results, we recommend using Technicoll 9430-1. It has a curing time of 45 minutes, while the Technicoll 9431 has a curing time of1.5 hours. However, both products are only completely set after several days.
Minor repairs
Cold welding agents are widely used for minor repairs. A cold welding agent is an adhesive that removes the top layer of a surface to bond it to the other material while using A 1K (one component). Besides universally applicable cold welding adhesives, cold welding adhesives are also developed for specific situations. An example of these type of cold welding adhesives is the Technicoll 108 , which is suitable for T-bonds and narrow surface bonding of polycarbonate. Additionally, it can also be used for bonding polystyrene (PS), acrylic glass (PMMA), ABS and PETG.
Epoxy adhesive is a thick liquid that is easy to apply to, amidst others, metals in need of repair. An example of such adhesibe is the Technicoll 9462 Epoxy Adhesive, which is a well spreadable fast tack adhesive that should be applied in 6 minutes. The adhesive is set in 20 minutes and also offers very good resistance to moisture or weathering.
Want to know more?
We are pleased to tell you more about our adhesive products and their application in mechanical engineering (e.g., in flat sealing, thread locking, bearing and bushing bonding, etc.). Contact us for a telephone consultation if you have any remaining questions. We are also happy to visit you to discuss the possibilities. You can use the contactform form to schedule an appointment with our industry expert.