Method and apparatus for the manufacture of a workpiece having a rotation-symmetrically hardened surface area
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United States of America Patent
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Oct 26, 1999
Grant Date -
N/A
app pub date -
Dec 18, 1997
filing date -
Dec 18, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a method and an apparatus for the manufacture of a workpiece with a rotation-symmetrically hardened surface area, the workpiece surface area to be hardened is initially applied with a carrier film of pulverized alloying elements. A roll is radially infed to the carrier film, accompanied by the rotation of the workpiece. Under the influence of heat, the pulverized alloying elements of the carrier film are rolled into the surface area of the workpiece so that the alloying elements are intercalated into the workpiece surface and increase its hardness. For performing this method, the workpiece is clamped on a spindle driven in a rotary manner. A receiving hopper and an application device are radially spaced from the spindle and are interconnected by a supply device.
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