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  • Users: engrnick
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  1. engrnick

    joining hot metal to cold metal

    I'm curious, what happens when you pour a molten metal, or a hot metal, onto a cooler version? For example, can I take molten aluminum and pour it on cold aluminum and have it bond? or does it need to weld? i can't seem to find any info on it. I ask because I'm curious if the cold aluminum...
  2. engrnick

    Towed cable calculations

    Hi all, I'm trying to work out an equation of motion for a project I'm working on. It's a towed system with a cable and mass at the end and I would like to be able to come up with an equation of motion for the system. I have the mass' drag values from some COMSOL simulations, but i'm feeling...
  3. engrnick

    Spekan Purge tools

    Hey all, Does anyone know what happened to the spekan purge tool? I have Spekan Purge 3.3 here, but I was looking to install it on a few other guy's computers but I can't find the zip file. I find 3.1 but it doesn't load right. If anyone knows where a zip file install mirror is, I'd appreciate...
  4. engrnick

    rapid hydraulic actuation

    How can one rapidly actuate a hydraulic piston? probably about 4500lbs,(2000kg) with a 4-6" (100-150mm) stroke distance, in .2 seconds? I don't know if this is possible, that's why I'm asking you guys, TIA.
  5. engrnick

    hydraulic motor feasibility

    I have a question for a design concept for a project i'm working on. I'm not a hydraulics guy, but if this works, we'll have to pull one on. I just want to make sure this design concept makes sense. We have a platform providing 3HP, 3000psi hydraulic. we are designing a concept that uses 5...
  6. engrnick

    Alternative SW Toolbox?

    Anyone got a location I can download a new Toolbox? I couldn't afford it, but I really need a standard parts library for faster modeling. Any suggestions for free ones? or at least a cheap, usable SW2011 compatible one?
  7. engrnick

    Suggestions for Pro/E user moving to SW?

    hi all, I'm learning how to use SW, and was wondering if any of you had any suggestions on how to become a better modeler. (or any references to learning how to be faster) anyone?
  8. engrnick

    electronegativity of aluminum and steel

    Hi all, I'm not an expert in corrosion and electronegativity, but I've got a test setup that I made for my client. the fixture is 316 steel and to test the setup my client said "just have some aluminum caps made." Not thinking too much about it, I had them made. We were gonna use the test...
  9. engrnick

    saltwater proof potting compound

    Hi all, I'm looking for a potting compound that will withstand saltwater immersion. Can anyone recommend a manufacturer? or can I just go with Digi-key's off the shelf material?
  10. engrnick

    high speed bearings

    Hi all, Wondering if any of you have worked with small high speed bearings that are sealed, or at least can handle water. I'm thinking we might need sealed. there will be _some_contaminants. Not much, but the possibility exists. I've never worked with bearings of this high speed before, so any...
  11. engrnick

    CATIA/STEP file showing yellow lines

    Hi all, i imported my CATIA step model into pro and can't seem to get rid of a yellow outline showing up in several of my parts in my drawing. It shows through the wire frame, similar to the way a datum curve shows through. the model has no hideable features, and remains when the part is cut...
  12. engrnick

    bi-directional piston?

    Hi all, I've got a need for a piston that can work both directions - push and pull. Since it's actuating a frame that moves left-right, I was thinking to use a piston I'd seen before that has two actuators on either end. What is this style called? can you recommend a manufacturer? Is this...
  13. engrnick

    draft angle on a logo on an angled surface?

    I have an angled surface that I want to have a logo placed on. Apparently the idea is to cast the part, powder coat it, and then grind off the powder coat on the logo to have the metal color shine thru. However, I'm having trouble placing a draft on the logo. I've put the logo on the...
  14. engrnick

    wf4 win7 update problem

    Hey all, I lost my WF license last night after applying updates to win 7. I can't use it at all. It says -97 error, daemon not available. What causes that? I can't uninstall because of the running applications, I can't find the processes to stop the server, and I re-read the license file...
  15. engrnick

    Heavy machinery design text book

    Can anyone suggest a textbook for dynamics/design specializing in heavy machinery? My old dynamics book is mostly about rods pinned to frictionless blocks on inclined planes. I'm looking for more focused design problems. Thanks Nick
  16. engrnick

    large diameter chamber seal

    I'm tasked with designing a large diameter seal for a chamber that needs to be opened quickly by operators. I've been looking at designs like those on autoclaves (the red round design): http://www.fungiequipment.com/autoclaves/autoclaves/index.shtml I think this style works best, does anyone...
  17. engrnick

    airtight Stainless COTS box?

    Hi all, Totally random question here. I'm looking for a commercial, off the shelf stainless steel airtight container for our research project. something that can handle maybe 5-10psi (this is probably an over estimate) for a flow test that we're doing. we'll drill the holes ourselves, but we...
  18. engrnick

    short linear actuators 100lb+

    Hi all, I was wondering if any of you can recommend a manufacturer for me to look at for some short linear actuators that can handle 100lbs or so. maybe 2-4" extension, preferably <9" retracted length. speed, voltage, not important right now. I'm working on a prototype and need to demonstrate...
  19. engrnick

    Pro/E WF 4.0 &amp; Win7 drawing issues

    Hi all, First post here, got a question regarding windows 7 and WF4 having problems when dimensioning and moving dimensions in drawings. I keep getting a flickering and have to wait for the screen to refresh. I think this is a win7 problem because I never had this problem when i was on XP...

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