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Recent content by andrewjmorin

  1. andrewjmorin

    Fast air quench for Aluminum plates

    Terrific, thank you. So a (12 x 25 x 1.5 x 1.15 =~ ) 520 MPH airstream might be in the ballpark?
  2. andrewjmorin

    Fast air quench for Aluminum plates

    So, if you don't mind my asking, what's the airflow you used?
  3. andrewjmorin

    Fast air quench for Aluminum plates

    Perhaps more information might help: The water quench tank contains approximately 2000 cubic feet of water. What would be the volume of air that could provide equivalent cooling?
  4. andrewjmorin

    Fast air quench for Aluminum plates

    IRstuff thanks for taking the trouble to run those numbers for me up there. Is there a reason you stopped? Once you know the power involved, will the heat transfer to the air not submit to a similar solution?
  5. andrewjmorin

    Fast air quench for Aluminum plates

    I've got racks of aluminum plates-- 1/4 inch thick, about 1500 lbs total-- solution treated to 870F that are then water quenched to achieve T6. Works pretty well if you don't mind distortion effects from the thermal shock. B-( I want to change this to an air quench, but there is a time factor...
  6. andrewjmorin

    Contsraining Section Lines

    anything rollupswx?
  7. andrewjmorin

    Contsraining Section Lines

    Sure thing. I've been fighting this for two days. ipt and idw file attachedhttp://files.engineering.com/getfile.aspx?folder=eba214f0-c8c1-48e4-abee-28ac66d1befb&file=40982050rE-_Grab_hook,_100k.zip
  8. andrewjmorin

    Contsraining Section Lines

    I have a part made up of several lofted surfaces, and now I need a dimensioned drawing, with sectional views showing the dimensions contained in the original loft sketches. One problem is that I cannot project the spline geometry of my lofts into drawing-view sketches, so there's nothing to tie...
  9. andrewjmorin

    TIG welding 8620 chain

    This just in: The links are purchased as cold-rolled wire bent into a 'C' shape, mechanically closed and manually TIG welded with filler-metal as recommended by the welding outfitter. They are getting 'porosity,' and failures at the proof-load. The chain (which determines the proof load...
  10. andrewjmorin

    TIG welding 8620 chain

    Thanks for the quick responses! This was my fear: that TIG was a bad call made by the folks from whom we bought this process. I know exactly jack about welding, I usually leave welding-spec calls to my fabricators, but in this case it's an in-house process that creates custom chain assemblies...
  11. andrewjmorin

    TIG welding 8620 chain

    We have acquired a process that uses a dedicated TIG welding unit to butt(?)-weld 8620 steel chain links. We are experiencing early failure. Can anyone here school me on what a capable process for making good connecting links would look like?
  12. andrewjmorin

    Wheel chocks

    ISZ, The pre-existing system hooks/locks a pair of chocks into the mesh, and the mesh is comfortably over-designed for that. I'm pretty free, within the envelope described and with allowances made for the system being light-weight and unlikely to damage the cargo. Two prototypes have been...
  13. andrewjmorin

    Wheel chocks

    Ding! I never thought of that, Mike!! <starts new free-body sketch>
  14. andrewjmorin

    Wheel chocks

    I'd have no job if reinventing the wheel was outlawed. <grins> Perversely, I'm restricted from *actually* re-inventing anything: I'm required to develop a restraint that uses the existing flimsy floor. It was designed for chocks only, not straps, from which I deduce that it was 'intended' to...
  15. andrewjmorin

    Wheel chocks

    O.K. Why would that be preferred?

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