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Recent content by RamingtonStall

  1. RamingtonStall

    Vitrified CBN and Vitrified Diamond

    Biffi, I would like to offer several comments concerning the wear of the crystals: =============================================== 1) Ref your comment: <<&quot;Some reseachs say that in high temperature, some carbon electrons of the diamond migrate to steel structure which forms Fe carbides...
  2. RamingtonStall

    information about grinding precedure

    Regarding your question: <<&quot;We are facing burn mark problem in centerless grinding machine.We are using roller type dresser.The coolant flow is 80 lpm.Grinding wheel drive power is 22kw.The speed,feed is at recommended levels.Do we need to increase coolant flow?Pls do give any info on this...
  3. RamingtonStall

    searching manufacturers

    Check in Thomas Register. http://www.thomasregister.com/ For Europe, you might want to try: http://www.tremnet.com/ RamS SAT SuperAbrasive Techniques, Inc. http://www.IndustrialDiamondCBN.com
  4. RamingtonStall

    Vitrified CBN and Vitrified Diamond

    HectorMontalvo (Industrial), Were you using Resin Bond CBN Centerless Grinding Wheels or Vitrified CBN grinding wheels? The early problems which I encountered with Resin Bond CBN Centerless grinding were in Dressing the wheel. We used various Dressing Sticks, Dressing Bars which could...
  5. RamingtonStall

    Keeping Precision Grinding Jobs in the USA???

    Probably time to get back to the original question: Is your Company or are you personally doing anything to help keep Precision Grinding Applications in the USA? Or perhaps you see all of Precision Manufacturing moving to China in the next 10 years? What do you think? What do you...
  6. RamingtonStall

    Keeping Precision Grinding Jobs in the USA???

    funnelguy, I have been wondering if all we are doing is exporting our: (1) Manufacturing Related Environmental problems, and (2) Slavery. i.e. Regardless of what the politicians say, every time the minimum wage goes up, more of the jobs go overseas, not that corporations wouldn't send the...
  7. RamingtonStall

    tapered centerless grinding

    Grinder Guy, The closest thing to this that I have seen is the Thru-feed Centerless Grinding of Fishing Poles. The parts are thrufeed Centerless ground and feed into a Curved tube which bends the poles as they exit the machine generating the taper. Lots of Set-up and playing required to...
  8. RamingtonStall

    Out of roundness and cattering noise during thro pass c'less grinding

    Steve, Great summary of recommendations for &quot;ahloma&quot;. I look forward to reading the responses after he investigates the points you mentioned. He also mentioned Taper on his 8mm diameter x 205mm length part, so that I would also check the guide allignment on the regulating wheel...
  9. RamingtonStall

    Keeping Precision Grinding Jobs in the USA???

    kgt74, A Pint of Bitter sounds Great! Thanks for the reply. Yes, I would like to check out the CD on the State and Future of Indian Manufacturing. I expect that it will give clues which are applicable to solving similar problems throughout the world. I am confident that eventually the...
  10. RamingtonStall

    Keeping Precision Grinding Jobs in the USA???

    kgt74, Thanks for your Thoughtful response. A very good point to include other countries such as India in this thread and your experience with Timken USA and India brings a very good perspective. It is interesting that India is also being bypassed for China due to labor costs. Especially...
  11. RamingtonStall

    information about grinding precedure

    Regarding CENTERLESS GRINDING, You would still need to be more specific in your question. The best General Guide was a manual put out by Cincinnati Milacron 30+ years ago, called Principles of Centerless grinding. I believe that Krar and Oswald included most of the key points in their 1974...
  12. RamingtonStall

    Vitrified CBN and Vitrified Diamond

    As no responses to date, Try again: Does anybody here know the difference between &quot;Hot Pressed&quot; Vitrified CBN and &quot;Structured Porosity&quot; Vitrified CBN? Description? Applications? Where to use? Costs? Other differences? Methods of Using? Limitations...
  13. RamingtonStall

    Centerless grinding silicon nitride

    JAB, Just curious, Did you ever get a response to this message which you posted in 1999? I can possibly help on the grinding of Silicon-Nitride as I have been involved in the centerless grinding of WC and PCD with Diamond grinding wheels as well as centerless grinding of many Steel workpieces...
  14. RamingtonStall

    Keeping Precision Grinding Jobs in the USA???

    Is your Company or are you personally doing anything to help keep Precision Grinding Applications in the USA? Or perhaps you see all of Precision Manufacturing moving to China in the next 10 years? What do you think? What do you recommend that you feel should be done? Note: In 1982...
  15. RamingtonStall

    roller burnishing

    The University of Toledo Micro Machining Center has been conducting research on Roller Burnishing of Universal Joint Journals for the past few years. Perhaps you could contact them. I don't have the web site, but here is an e-mail address and they will be able to point you in the right...

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