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Title:
METHOD FOR PRODUCING A FRICTION-WELDED METAL PART AND FRICTION-WELDED METAL PART PRODUCED ACCORDING TO SAID METHOD
Document Type and Number:
WIPO Patent Application WO/2012/107915
Kind Code:
A4
Abstract:
The invention relates to a method for producing a friction-welded metal part having a shaft and at least one outer part, which is fastened to the shaft and has a greater diameter than the shaft and properties different from the shaft, comprising the steps of providing a blank for the outer part (1) having a round opening (5); providing a rod-like shaft blank (2) having an end section (6) that has a diameter greater than the inner diameter of the round opening (5) and that is centered with respect to the round opening; friction welding the end section (6) of the rod-like shaft blank (2) to the outer-part blank (1) in order to form a weld bead (4) by pushing the end section (6)into the opening (5), wherein the opening is expanded by means of the friction welding, until the end section hits the end of the round opening (5) and a welded-on outer part is formed on the outer part (1), wherein the weld extends conically in the outer part and the outer part surrounds the shaft blank; and shaping the blank thus produced in order to produce an outer-part contour by means of a method selected from among the following group: forging, upsetting, electric upsetting, extruding - all of the methods mentioned in the cold, warm, or hot temperature range. The invention further relates to a part produced according to said method.

Inventors:
KOLBE PETER (DE)
SCHMITZ ERNST-PETER (DE)
KOERNER THOMAS (DE)
Application Number:
PCT/IB2012/050690
Publication Date:
October 26, 2012
Filing Date:
February 15, 2012
Export Citation:
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Assignee:
SCHNEIDER GESENKSCHMIEDE (DE)
KOLBE PETER (DE)
SCHMITZ ERNST-PETER (DE)
KOERNER THOMAS (DE)
International Classes:
B23K20/12
Attorney, Agent or Firm:
NEIDL-STIPPLER, Cornelia, E. (München, DE)
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