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Brands » Novilon » Machining Technology

Machining Technology


Simple Processing

Cast polyamides are excellent for processing. In comparison with metals, their processing is faster and requires less energy. Their specific properties must be taken into account when processing them:

  • greater deformability than in metals
  • quite smaller elasticity module
  • faster reaction to temperature
  • smaller thermal conductivity

Instructions for Machining

Clamping

In order to get a quality product it is very important that the workpiece is properly clamped. When planing, the free end of the clamped workpiece should be as short as possible in order to avoid unwanted deformities and vibrations.

Tools

In most cases, standard tools for the processing of metals and partially for the processing of wood can be used for the machining of polyamides. The tools can be made of high-speed steels and of metal carbides and oxides. The cutting angles on the tools are closest to the angles for bronze processing. The most important thing is that the tools are sufficiently sharp. This causes smaller deformities and a smaller heat development.

Heating or Heat Development

Due to the low thermal conductivity of the material we must make sure that local heating is not too great, as it would cause material defects. Hence the tools must be sharp and correctly ground. It is recommended that a thinner layer of material is removed in the final stage, thus protecting the surface from heat damage. In the case of fast cutting speeds and substantial removal of material, cooling with water, air or emulsion can be used. Coolants are also recommended during long production cycles, in which the prolonged service life of a tool is of chief importance.

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