Cutting finishing and joining

The cellular structure of metal foams requires that special techniques are required to give high-quality cuts and joints:

• Rough cutting is practical with conventional machine tools, but with some surface damage.

• High-quality surfaces require the use of electro-discharge machining, chemical milling, water-jet cutting or high-speed machining.

• Adhesives work well as bonding agents for metal foams.

• Welding, brazing and soldering are all possible.

• Threaded, embedded and bolted fasteners require careful design if they are to function well, and are sensitive to fatigue loading.

Guidelines for the design and use of joining methods are assembled in this chapter.

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