| 摘要 |
A magnetic chuck having a fluidizable bed of ferromagnetic particles, energizable magnets to magnetize the particles, means to fluidize and demagnetize the particles, and to defluidize and magnetize the particles. Irregularly shaped ferrous and non-ferrous foundry castings are easily partially embedded during fluidizing and demagnetizing of the bed and rigidly held in position upon defluidizing and magnetizing of the particles into a rigid mass about the casting. Thereby all portions of the casting can be worked upon by faster cutting and more powerfully fed cutting tools.
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