kb0fhp Posted June 23, 2009 Share Posted June 23, 2009 http://www.shibuiswords.com/tatsuoinoue.htm I have met Dr. Inoue and have seen him give this presentation. Very fascinating..... D. Scott MacKenzie, PhD Heat Treating (Aluminum and Steel) Quenching (Water, Polymer, Oil, Salt and Mar-Tempering) Link to comment Share on other sites More sharing options...
john marcus Posted June 23, 2009 Share Posted June 23, 2009 great link thanks !! infinite edge cutlery Link to comment Share on other sites More sharing options...
Howard Clark Posted June 23, 2009 Share Posted June 23, 2009 I have always had a problem with a silver (Ag) cylinder to calibrate the heat extraction rate. It is a very interesting bit of work though, to be sure. I would like to embed fine wire thermocouples into a blade every couple inches or so of length and at different depths in from the spine and do a real time graphing of quenching a real sword. But my personal research budget will not support that at this time (largely due to hardware costs for the i/o board to get the t/c into the computer, and the graphing software). I would gladly donate the time and the blade and clay to do it, but have not been able to get that sorted, yet. Maybe someday. Link to comment Share on other sites More sharing options...
kb0fhp Posted June 23, 2009 Author Share Posted June 23, 2009 I have always had a problem with a silver (Ag) cylinder to calibrate the heat extraction rate. It is a very interesting bit of work though, to be sure. I would like to embed fine wire thermocouples into a blade every couple inches or so of length and at different depths in from the spine and do a real time graphing of quenching a real sword. But my personal research budget will not support that at this time (largely due to hardware costs for the i/o board to get the t/c into the computer, and the graphing software). I would gladly donate the time and the blade and clay to do it, but have not been able to get that sorted, yet. Maybe someday. You can get a cheap I/O board from Omega and use about a 50Hz acquisition rate then graph it in Excel....it works well D. Scott MacKenzie, PhD Heat Treating (Aluminum and Steel) Quenching (Water, Polymer, Oil, Salt and Mar-Tempering) Link to comment Share on other sites More sharing options...
Howard Clark Posted June 23, 2009 Share Posted June 23, 2009 All my computer hardware is, at present, Mac OSX based. I do have a couple of PC laptops, but they are both old ones that need some work. I was not aware that it could be done that way though, thank you, Scott ! I will look into it further. Link to comment Share on other sites More sharing options...
kb0fhp Posted June 25, 2009 Author Share Posted June 25, 2009 All my computer hardware is, at present, Mac OSX based. I do have a couple of PC laptops, but they are both old ones that need some work. I was not aware that it could be done that way though, thank you, Scott ! I will look into it further. I think they have some simple boards that would work thru a firewire or USB port.... D. Scott MacKenzie, PhD Heat Treating (Aluminum and Steel) Quenching (Water, Polymer, Oil, Salt and Mar-Tempering) Link to comment Share on other sites More sharing options...
jake cleland Posted June 25, 2009 Share Posted June 25, 2009 interesting piece, particularly how dramatic the effect of the clay wash is on the rate of cooling in the first seconds. would there be a similar effect in an oil quench? sorry for my ignorance, but i'm not sure if a stable vapour stage is a factor in the (relatively) slow cooling rate of oil quenching? Jake Cleland - Skye Knives www.knifemaker.co.uk "We can't solve problems by using the same kind of thinking we used when we created them." "Everything should be made as simple as possible, but not simpler." "Two things are infinite: the universe and human stupidity; and I'm not sure about the the universe." Albert Einstein Link to comment Share on other sites More sharing options...
kb0fhp Posted July 7, 2009 Author Share Posted July 7, 2009 interesting piece, particularly how dramatic the effect of the clay wash is on the rate of cooling in the first seconds. would there be a similar effect in an oil quench? sorry for my ignorance, but i'm not sure if a stable vapour stage is a factor in the (relatively) slow cooling rate of oil quenching? Actually it does. You get a stable vapor phase with oil. Using surface roughness you can speed it up (or you can slow it down if the roughness is too much and the bubbles "stick"). I would imagine clay would do a similar thing. D. Scott MacKenzie, PhD Heat Treating (Aluminum and Steel) Quenching (Water, Polymer, Oil, Salt and Mar-Tempering) Link to comment Share on other sites More sharing options...
Brian Madigan Posted July 7, 2009 Share Posted July 7, 2009 "a kind of clay, yakiba-tsuchi, mixed by charcoal powder and so on..." and so on!!! thats what they always say about the clay. Oh well, satanite works for me. Link to comment Share on other sites More sharing options...
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