Method for the manufacture of hollow shafts

Details Method for the manufacture of hollow shafts Method for the manufacture of hollow shafts

1999-07-29

2000-11-28

Jenkins, Daniel J.

Metal treatment

Process of modifying or maintaining internal physical...

Producing or treating layered, bonded, welded, or...

148226, 148233, C21D 908, C23C 820

Patent

active

061530301

ABSTRACT:
A method for the production of hollow shafts from welded or seamlessly produced steel tubes having a maximum carbon content of 0.35% includes (1) carburizing a tube to a carbon content greater than 0.5%; (2) slowly cooling the carburized steel tube down from the process temperature, so that it undergoes no increase in hardness; (3) machining and/or non-cutting processing the carburized and soft steel tube to produce a workpiece blank; and (4) hardening the workpiece blank by local heating and quenching at desired points.

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Bargel, Schulze et al: "Werkstoffkunde" 1998, VDI-Verlag GMBH, Dusseldorf XP002121638, pp. 179 -181.
I. A. Useinov et al., "Apparatus for heat treating sleeve pipes after thread cutting," Metal Science & Heat Treatment, vol. 16, Nos. 7-8, pp. 594-596, Jul.-Aug. 1974 (publ. Jan. 1975).

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