Sintered mechanical parts
Machining
Although the main characteristic of sintering technology is to produce specific shapes to accurate tolerances, there are some geometrical limits that need to be overcome by machining.
For example, holes at 90º to the direction of compression are not possible without an additional machining operation.
Porosity affects the machining characteristics of the materials and tools used for wrought materials cannot always achieve the same results with sintered parts.
The suggestion is to use a hard material tool with low cutting speed.
Machinability can be improved by adding powder elements such as copper, graphite, sulphur, sulphides (e.g. of manganese), infiltrating or resin impregnating.
If all the above is taken into account, it is possible to use all traditional machining methods such as turning, drilling, milling, grinding, etc..
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