Method for sintering a multicomponent object to be sintered, electric machine, and electric vehicle

Patent metadata

Field	Value
Publication number	US-12301076-B2
Application number	US-201917280437-A
Country	US
Kind code	B2
Filing date	Sep 6, 2019
Priority date	Sep 27, 2018
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

Various embodiments include a method for sintering a multicomponent sinter product comprising: forming a first component consisting of a first material printed with one or more recesses for a second component; forming the second component consisting of a second material; inserting at least a portion of the second component into the one or more recesses of the first component; and shrinking the first component and the second component onto one another by sintering.

First claim

What is claimed is:

1. A method for sintering a multicomponent sinter product, the method comprising:
printing a first component consisting of a first material having a first rate of shrinkage during sintering, the first component including one or more recesses disposed around a radial edge of the first component;
forming a second component consisting of a second material having a second rate of shrinkage during sintering, wherein forming the second component includes a separate process from printing the first component;
wherein the first rate of shrinkage during sintering is different from the second rate of shrinkage during sintering;
inserting at least a portion of the second component into the one or more recesses of the first component; and
shrinking the first component and the second component onto one another by sintering;
wherein the one or more recesses each include a respective edge region having a step in a radial direction as defined by the radial edge.

2. The method as claimed in claim 1 , wherein the multicomponent sinter product comprises a metal sheet.

3. The method as claimed in claim 2 , wherein the first component is printed with at least one recess that surrounds or borders an entirety of the second component.

4. The method as claimed in claim 3 , wherein the first component includes at least one toothed recess.

5. The method as claimed in claim 1 , wherein the shrinkage rate during sintering of the first material is greater than the shrinkage rate during sintering of the second material.

6. The method as claimed in claim 1 , wherein forming the second component includes printing the second component.

7. The method as claimed in claim 1 , wherein forming the second component includes punching the second component from a sheet, or cutting the second component from a sheet.

8. The method as claimed in claim 1 , wherein the first component is non-magnetic.

9. The method as claimed in claim 1 , wherein the second component is magnetic and/or electrically conductive and/or permanently magnetic.

10. The method as claimed in claim 1 , in which the sinter product comprises a magnetic metal sheet.

11. The method as claimed in claim 1 , wherein:
the sintering uses a sintering tool with a sinter product area for fitting the sinter product; and
the sinter product area is made to vibrate during sintering.

Assignees

• Siemens Ag

Inventors

• Schuh Carsten
• Soller Thomas
• Vollmer Rolf

Classifications

• B22F7/062

  involving the connection or repairing of preformed parts · CPC title

• B22F5/08

  of toothed articles, e.g. gear wheels; of cam discs · CPC title

• B33Y80/00

  Products made by additive manufacturing · CPC title

• B33Y40/00

  Auxiliary operations or equipment, e.g. for material handling · CPC title

• B33Y10/00

  Processes of additive manufacturing · CPC title