PRODUCTS Built to take the heat
Loctite instant adhesives for industrial applications already encompass a broad range of different categories, such as light-curing, low-bloom, impact and shock resistant, as well as toughened products for flexible bond lines. Now, with Loctite 401, 406 and 454, three products with an enhanced formulation have been launched onto the market, capable of withstanding service temperatures of up to 120°C.
suitable for even more applications. New applications for this improved product range can be
A
found, for instance, in the electronics industry, e.g. for bonding components installed in generators and storage batteries. In electric motors and loudspeakers too, the number of uses for these enhanced Loctite adhesives has been extended. And also in washing machines and tumble dryers, in heating elements and lighting equipment, the upgraded product line should soon find itself increasing in popularity.
New product capabilities Loctite 401 is the all-purpose instant adhesive. It is as suitable
for rubber, plastics and metals as it is to bonding porous materials such as wood, paper, cork or leather. It is also ideal on smooth, acidic
ll three products have seen their formulation improved and are now temperature resistant up to 120°C without any adverse effect whatsoever on overall performance – which means these Loctite instant adhesives are
substrates, for example galvanised or chromated components. Loctite 406 is particularly suited to the bonding of rubber,
plastics and elastomers. Following surface treatment with the polyolefin primer Loctite 770, even substrates made from polyethylene, polypropylene and polytetrafluoroethylene (PTFE) can be adhesive bonded. Loctite 454 is a general purpose instant bonding gel that
does not drip, making it ideal for applications on vertical and overhead surfaces. It will bond paper, wood, cork, foam, leather, cardboard, metals and plastics. “Customers can continue using their already installed
dispensing equipment to apply the new adhesives. Conversions take no time at all as the product containers are unchanged. Consequently, new applications can also be implemented with all three products without problem.” Loctite 401 and Loctite 406 are available in 20g, 50g and 500g
bottles, while Loctite 454 instant adhesive gel is sold in tubes of 3g, 20g and 300g.
Facilitating lightweight construction
Arnold Umformtechnik highlights that its Alufast®
aluminium screws are
especially advantageous for joining magnesium components, especially with material pairs exposed to thermal stress as they significantly enhance the security of threaded fastener joints. Furthermore, Alufast®
aluminium screws weigh only a
third as much as equivalent steel screws, meaning that the weight saving for particularly large volumes can amount to the equivalent of several metric tonnes of steel per year.
152 Fastener + Fixing Magazine • Issue 75 May 2012 A
rnold Umformtechnik points out that the type 6056 aluminium alloy used for Alufast® has a proven track record
of durability for joining magnesium components with threaded fasteners. The Alufast®
product line has good
characteristics for thermal expansion, corrosion resistance and recycling. At the same time, Alufast®
products fulfil
stringent requirements for retention of clamping force, thermal stability and weight reduction. Unlike steel screws, which require over dimensioned head bearing areas for joining magnesium components, standard dimensions are sufficient with Alufast®
fasteners. the Alufast®
The mechanical properties of screws are practically
stable under long-term stress at temperatures up to approximately 150°C. Brief temperature excursions up to approximately 180°C do not pose a risk. Alufast®
screws can be used untreated
in combination with commonly used magnesium casting alloys, such as Az91 HP. They do not need any additional surface coating. The corrosion resistance of the components remains stable over their entire operating life.
fasteners
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