29 декабря, 2015 
Pokraskin Many adhesives are suited for the bonding of metals used in mechanical engineering. Epoxy resins and acrylics are particularly well suited. Bonding is mainly used for the production of composite materials, where welding cannot be used. Plain steel, low — alloy steel and high-alloy steel, as well as different aluminum and casting alloys, are the most important materials bonded in mechanical engineering.
Cold-setting adhesives with high reactivity, such as two-part adhesives, methyl methacrylates, anaerobic adhesives and cyanoacrylates, are the most frequently used adhesives. It is not only essential to conceive the design so as to meet the demands of adhesive bonding, but also to be knowledgeable about the long-term behavior of bondings under prevailing conditions. These are classified into ‘exposure to chemicals’ (e. g. oil or water vapors) and ‘physical requirements’ (e. g. creep and vibration). The specification of the requirements usually allows an optimal adhesive to be found for a specific application.
Bonding also offers advantages in the manufacture of cutting tools such as machine reamers or end mills. In both cases, hard-metal (carbides pressed into a metal matrix) cutting tips are bonded to steel flutes using a hot-setting epoxy resin adhesive. Originally, these tools were manufactured by brazing, but this induced distortion and softening of the steel, microcracking of the cutting material, and incomplete joining of hard metal and steel. The key advantages of adhesive bonding are: (i) the joining ofhard metal and steel over the entire surface, without harming the materials; (ii) the prevention of crevice corrosion; (iii) the even distribution of strains; and (iv) the damping of vibrations [46].
8.9.2
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