Differential gear and method of making same
AssigneeDaimlerChrysler AG
InventorsTycho Eulenstein, Willi Netuschil, Rudolf Paasch
Life of this patent
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Abstract
A differential gear includes a differential housing consisting of cast iron and a differential crown wheel consisting of case hardened steel. The differential gear, while being of reproducible quality, can be produced simply and cost-effectively. The differential housing has, on the circumference onto which the differential crown wheel is pressed, a bearing shoulder, to which the differential crown wheel is fastened via a nickel-containing welded joint. The composition of the welded joint is influenced by the use of a nickel-containing additional material which is added to the welding melt in the form of an annular foil arranged between the bearing shoulder and the differential crown wheel.
Claims9
A differential gear, comprising:
- a differential housing comprising cast iron and having a bearing shoulder on a circumference;
- and
- a differential crown wheel comprising case-hardened steel and arranged on the bearing shoulder,
- wherein the differential housing and the differential crown wheel are connected to one another via a welded joint between the bearing shoulder and the differential crown wheel,
- wherein said welded joint comprises a nickel-containing material.
Dependencies are inferred from the claim text.