Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. tripleZ

    Marcellus shale question

    Thanks to you both for your opinions. I've passed it on to my family and it sounds like they're looking to retain the rights for now unless they can't find a buyer. Thanks again!
  2. tripleZ

    Marcellus shale question

    I'm not a petroleum or natural gas guy, so please bear with me as I may be missing a lot of detail. My parents have a 60-acre farm in western PA (Jefferson Twp, Fayette County) that they are looking to sell. The property does have natural gas on it (Marcellus shale) and they have been...
  3. tripleZ

    Grinding vs turning

    We had a differential collar that required a 0.5 Ra finish on a face (not the OD). Stock removal was roughly the same amount as you dealt with. Typically, we could hit this finish using a two step process, removing the first 0.2mm with a rougher tool and the remaining stock with a wiper...
  4. tripleZ

    ARENA SIMULATION PROCESS

    The model setup itself is fairly easy, although it's been about 10 years since I last used Arena. Your biggest challenge to start is tracking box arrival/departure rates for all of the points. You need to determine the time distributions of these to see if they fit a standard distribution or...
  5. tripleZ

    Anybody have experience with investment cast gears?

    The use of stainless PM gears is really going to depend on what dimensional tolerances you want combined with your strength requirements. At 5.5 sq inches, you're probably going to need a 550-ton mechanical press or equivalent hydraulic, depending on the # of gear levels. You can coin for...
  6. tripleZ

    Head Hunter vs. Direct Hire

    All depends on who the headhunter is I guess. The man that pulled my resume out of thin air for my current position became a headhunter when he retired. He was my former company's GM. Depending on how big your field is, you may find that there are these "boutique" outfits made up of retired...
  7. tripleZ

    Vacuum Sintering

    I usually vacuum sinter by pulling the unit down to 50 microns. For heating, backfill with N2 and hold the partial pressure around 300 microns. All of your cooling will be done at that partial pressure using forced N2 as the cooling medium. One observation I'll make is that you need to...
  8. tripleZ

    Coining/Die operation manufacture process advice...

    JohnFox, What is the flatness/parallelism requirement on the thickness? Next, what volume are we talking about? What are the corrosion requirements? And are you willing to budge at all on the radius corners? What about small chamfers with burr traps rather than full radii? I can mold most...
  9. tripleZ

    Chrysler Engineering reputation

    Greg: Not too sure of the details yet. The way it was explained to me, it doesn't quite make total sense. If a component fails then the component supplier is responsible for warranty replacement cost. So rather than the cost of the component, they would also have to cover replacement cost...
  10. tripleZ

    Purchasing New CNC

    Check a couple of the machine auction sites. American Axle was just liquidating literally buildings of machinery from their Detroit plant. They're not the only ones doing this. The market has a ton of surplus, even in specialized machinery. Same goes for inspection equipment and the like.
  11. tripleZ

    Chrysler Engineering reputation

    Interesting point on the automotive warranty issue Greg. I was told by a tier 1 customer of mine that GM is now going to mandate that warranty costs of sub-components are going to be shouldered by the sub-component supplier (those who agree to that deal I guess). Any truth of this being a...
  12. tripleZ

    Working practices in Pittsburgh and Dallas

    I'm a Pittsburgh native (don't live there anymore), but most of the advice you've received here is adequate. If you're relationship has progressed this far, shirts and slacks are likely sufficient. You can bring cookies if you like...as mentioned people with allergies will know. Also, don't...
  13. tripleZ

    Question regarding "work time" efficiency

    All depends on what you count as "efficiency". If my managers don't consider the time I spend on the floor helping to train operators, fix CMM issues, fix CNC programs, help train setup techs, etc., as billable time towards the bottom line, then I'm not doing so well! If they count that and...
  14. tripleZ

    anti galling tips..on ss to ss press fit

    Swagelok will also coat some of their smaller packing bolts in the valve assemblies with a material called Everlube. It's a teflon based coating. Coating is always focused on the threaded areas, I believe to help with the prevalence of galling in 316ss.
  15. tripleZ

    Metallurgical Lab from 0s

    How accurately can the new EDS systems gage Boron content? Meaning, does the boron content have to be of a certain % of the total material to adequately pick it up? Or are trace amounts (say in the .025% range) able to be detected? Sorry for the hijack. We've just never been able to get a...
  16. tripleZ

    How to determine target yields

    My current facility is the mass customized one where lot sizes are in the 5,000 - 125,000 range, depending on the product line. We do figure in our scrap quantity when scheduling. So, yes, we will build larger lot sizes than ordered. But we have other factors we consider when scheduling. For...
  17. tripleZ

    How to determine target yields

    If you only make 3-10 parts at a time, and your runs only occur several times per year, then we're talking an estimated annual quantity of say, 12-40 parts? At that level, I'd assume your target yields would need to be relatively high in order to maintain profitability...say 95% or higher. So...
  18. tripleZ

    Manufacturing Process for 17-7 PH Stainless Valve Plates

    0.055"? What are the outer plate dimensions? I'd guess that heat and/or clamping forces from machining or grinding could throw you out by a few thousandths. What method are you using for grinding? Double disc? Single side grinding via blocking in? If the plates are simply flat plates, you...
  19. tripleZ

    Titanium Nitride Coating a bad Idea?

    When I looked up 17-4 PH drills, I saw links to catheter drilling. What material are you cutting? Next, I'll second TVP on stating that you need to determine if the process is PVD or CVD. If the drills are PVD, then I'd probably start looking down the path of the machining conditions, the...
  20. tripleZ

    High Volume Part: Molded Plastic, Die Cast or Screw Machine??

    Plastic material? If I'm reading the drawing correctly, that little thin walled tapered area looks like a hoot. No issues with part off lines? I'll take a shot and and say injection molding followed by a secondary tapping operation. Plain vanilla machining will likely require a twin spindle...

Part and Inventory Search

Back
Top