Metal joining techniques

Adhesive bonding for structural joint formation is attractive because it presents a number of distinct advantages over more conventional metal joining techniques, such as 1-3> ... 

Use of conventional metal joining techniques, such as welding or brazing for sealing... 

Metal Casting Techniques. Many ancient cast metal objects were made by the cire perdue (lost wax) casting process, which involves pouring molten metal into a one-piece mold and letting it solidify modem fakes are usually cast in two halves that are then joined. A casting fin, or a fine line of filed solder on a cast object, usually reveals that the casting is modem. 

Superplasticity is a very promising property, not only because, like in metals, the superplastic formation opens a way for the manufacturing of complex ceramic pieces for industrial applications, but also because the combination of GBS and diffusional processes makes superplasticity an interesting tool for joining ceramic pieces in shorter times and lower temperatures than the diffusional joining technique. 

Parts from PVDF can be machined, sawed, coined, metallized, and fusion bonded more easily than most other thermoplastics. Fusion bonding usually yields a weld line that is as strong as the part. Adhesive bonding of PVDF parts can be done epoxy resins produce good bonds [31]. Because of a high dielectric constant and loss factor, PVDF can be readily melted by radiofrequency and dielectric heating. This is the basis for some fabrication and joining techniques [32]. 

Joining refers to mechanical methods of fastening parts to each other. Joining techniques usually do not require adhesives and can be accomplished by designs similar to those applied to attach metals. This topic is covered in great detail in Ref. 27. 

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