Method For Producing Rotary and/or Stationary Seal Rings of a Mechanical Face Seal by Means of Laser Hardening
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United States of America Patent
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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.
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