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Recent content by phoenix221

  1. phoenix221

    Catia NC code generation problems

    We are using MACH3 (3 axis only) as a controller on our prototyping setup. I've included a sample code here. Please note that it is not a complete file and the line numbers are not present either: ---------------------------- G20 G0 G17 G40 G49 G80 G90 G61(CONSTANT CONTOUR OFF OR TURN ON W/G64)...
  2. phoenix221

    Catia NC code generation problems

    Thanks for the post. I am sure IMS would love to get their hands on my money :-)... although I have to make this work without spending more. The PPT table I've selected, under the 'Numerical Control' tab (Machine Editor), is PPTableSample_inch.pptable. I've also tried a different post processor...
  3. phoenix221

    Catia NC code generation problems

    I've recently attempted to transition from VisualMill to Catia-Manufacturing. I am having problems with generating the NC code from machining operations in Catia V516. I am using the (IMS) bendix (comes with Catia?) post processor to generate G-code suitable for Mach3. My toolpaths look OK...
  4. phoenix221

    High TG epoxy

    The project is on a back burner. I'll post to the forum as soon as I have results
  5. phoenix221

    Corrosion under carbon fiber composite

    I will be applying a layer of glass fiber between the steel and the carbon fiber. I'll see how that works out. Thanks.
  6. phoenix221

    High TG epoxy

    Folks thanks for the renewed interest. I am currently doing some prototyping with PT2846A/B2 (by PTMW) which combined with carbon fiber should give good hig temp (500F) performance. If this does not pan out, I'll try to steal the industrial secrets of SpiritAerosystems/Boeing :-)
  7. phoenix221

    High TG epoxy

    Just an update, I've gotten some tips offline... PT2846A/B2 (by PTMW) - this stuff will set at room temp, then after a graduated post cure TG is claimed (by PTMW) to go as high as 425F ABOCAST 8501-5 (by ABATRON) - they claim that set is at 90F, after a 4 hour post cure, TG is at 570F...
  8. phoenix221

    Improved thermal conductivity of carbon fiber+epoxy composite

    I am moving this info here for reference. Compositepro suggested this in another thread by me. By Compositepro: You might consider twisting the carbon fiber tows. Axial conductivity of carbon fiber is much greater than radial conuctivity. Twisting the fiber will mean that axial heat flow will...
  9. phoenix221

    Carbon Steel surface prep for Carbon Fiber Composite

    Thanks Compositepro. I was trying to keep the issues in separate posts for future searchers of the forum who may not be interested in the compound problem... > You can put a rough surface on the steel interface to get a > strong mechanical lock with the rod. Will sand/bead blasting do it? ...
  10. phoenix221

    Improved thermal conductivity of carbon fiber+epoxy composite

    >Look into using K1100 or Mitsubishi K13D fibers. They have > an axial conductivity 4 times better than copper. I've searched the web and I found out that this is a form of carbon fiber. Who offers sleeves in this material?
  11. phoenix221

    High TG epoxy

    Thanks for all the reply folks... > Look into the PETI resins developed by NASA... Is this the type of stuff UBE America commercialized called PMR-15? It is my understanding that PMR-15 contains the toxic compound methylenedianiline (MDA). I've also found RP-46 (Unitech Corp.) but the info I am...
  12. phoenix221

    Carbon Steel surface prep for Carbon Fiber Composite

    Compositepro, thanks for the answer... > If the parts are large and there will be large strain > differences between the parts The part is a steel rod of .56" diameter surrounded by a carbon fiber sleeve which cycles through a range of -20F to +200F. While it heats up the carbon fiber should...
  13. phoenix221

    Carbon Steel surface prep for Carbon Fiber Composite

    Hi all, I am facing a problem with ensuring that a multi layer carbon fiber composite properly bonds to a carbon steel surface (one side only) and it stays bonded while going through termal cycles going as low as -25F to 150F. I would also like to avoid any cathodic corrosion between the steel...
  14. phoenix221

    Improved thermal conductivity of carbon fiber+epoxy composite

    Hi all, Is there a way to improve the thermal conductivity of carbon fiber, multi layer composites (using epoxy)? I've hear of some metal additives that are mixed into the epoxy but they degrade mechanical performance :-( Any other way to go about this in a cost effective way? I'd like to get...
  15. phoenix221

    High TG epoxy

    I am hoping someone could suggest an epoxy/resin system that has a TG in the 450F range and is compatible with carbon fiber. Now that was the easy part, the hard part is to find an epoxy/resin system that will yield the high TG and is relatively easy to work with, i.e. which can be cured...
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