Method For Producing Rotary and/or Stationary Seal Rings of a Mechanical Face Seal by Means of Laser Hardening
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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N/A
Issued Date -
Feb 19, 2009
app pub date -
Sep 22, 2006
filing date -
Nov 17, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Process for producing sliding and/or mating rings which can be used for a sliding-ring seal, by manufacturing sliding and/or mating rings by casting from a grey cast iron material with a high thermal conductivity, by machining at least in the subsequent sealing zone and finally by laser-hardening the surface of the respective sealing zone. It is preferable to use a grey iron having the composition (%) C: 3.4-3.9, Si: 2.2-3.2, Mn: 0.5-1, Cr: 0.1-0.4, V: max, 0.15, Cu: 0.1-0.7, P: 0.3-0.6, S: max. 0.13, remainder Fe and inevitable impurities.
First Claim
Other Claims data not available
Family
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| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| DE | A1 | DE102005054709 | Nov 17, 2005 |
| CN | B | CN101297048 | Sep 22, 2006 |
| WO | A1 | WO2007056967 | Sep 22, 2006 |
| JP | A | JP2009516073 | Sep 22, 2006 |
| EP | A1 | EP1951917 | Sep 22, 2006 |
| KR | A | KR20080077084 | Mar 25, 2008 |
International Classification(s)
- 2006 Application Filing Year
- B21D Class
- 727 Applications Filed
- 350 Patents Issued To-Date
- 48.15 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 6 Citation Count
- B21D Class
- 5.47 % this patent is cited more than
- 16 Age