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  1. Tuckabag

    Acessing CMD shell in Excel/VBA with keystrokes and copying resultant data

    Hi, I am trying to incorporate via VBA opening a CMD shell to run an old DOS program, enter some values and then capture the results to paste back into Excel. So far I can open the Shell, run the program and send keystrokes as required using the below VBA code. works = "C:\Hydoff\hydoff.exe"...
  2. Tuckabag

    Basic Electrical CAD software

    Hi All, Looks like our workplace is going to pick up a couple of jobs where we need to create some electrical circuit dwgs showing field terminations, etc. I've done this before using our Solidworks software and creating blocks for each component, but it's sloppy and time consuming. Any...
  3. Tuckabag

    Youngs Modulus Data for ASTM A276 316/316LSS round bar

    Hi all, Any leads on where I can find some low temp data for youngs modulus of ASTM A276 316/316LSS round bar (cold drawn > 0.5" OD)? Specifically looking for -90°C, but anything close or lower would be fine and we will just interpolate. Data that I've found so far only goes down as low as...
  4. Tuckabag

    O-Ring Stiction data

    Hi All, Just wondering if anyone can point me in the direction of some data or calculations for o-ring stiction? I've used the Parker O-Ring book to calculate the running friction, however the only data they give re stiction is that the maximum break away friction that will develop in a system...
  5. Tuckabag

    Reciprocal mechanism with 180degree rotation

    Hi All. I'm looking for a mechanism that is reciprocal (driven by double acting air piston motor) that can also rotate the driven shaft 180degree from start of stroke to end of stroke and then rotate back to original position on the return stroke of the air motor. I just cant wrap my head around...
  6. Tuckabag

    Exotic alloy cartridge check valves

    Can anyone point me in the direction of manufacturers of small (<1/2" dia) cartridge check valves in exotic alloys (C276, Alloy400, etc)? Our usual suppliers can produce 304/316SS ones no problems, but the exotics are much more difficult to find. Thanks.
  7. Tuckabag

    B16.5 flange forgings

    Quick question. It was always my understanding that forged flanges in accordance with B16.5 needed to be shape forged. However I can't find any reference in the standard to support this. Can anyone comment on whether this is a requirement, or can we use round, forged bar to manufacture forged...
  8. Tuckabag

    RGD research

    Can anyone help with referencing any websites, papers, standards, etc regarding elastomer RGD on hydrocarbon service? I've read RR485 - Elastomeric seals for rapid gas decompression applications in high-pressure services and it has some good information, but most of the relevant information in...
  9. Tuckabag

    Low Temperature performance data for PEEK

    Can someone point me in the direction of some data/papers re performance of PEEK at (relatively) low temperatures (-50deg C)? All the data I've found so far touts the high temp performance, but I cant find anything re lower temps. We are looking at swapping out PCTFE seats for PEEK ones. Seat...
  10. Tuckabag

    PEEK data for low temp service

    Can someone point me in the direction of some data/papers re performance of PEEK at (relatively) low temperatures (-50deg C)? All the data I've found so far touts the high temp performance, but I cant find anything re lower temps. We are looking at swapping out PCTFE seats for PEEK ones. Seat...
  11. Tuckabag

    Reducing SCC on 316/316LSS

    Are there any treatments/coatings available that will help reduce SCC in 316/316LSS material? I know we can use exotics such as Duplex, however some of the tube fittings/tube required are either not available in these materials or have ridiculous lead times. I was considering one of the...
  12. Tuckabag

    SW2013 vs 2018

    Not sure if posting in the right forum, if not, please let me know and I'll move it over. My employer currently uses SW 2013 x64 Std. Edition (SP2.0). It seems to handle everything we need it to do which is create custom machined parts, assemblies, GA drawings and machine shop drawings...
  13. Tuckabag

    Ring magnet application

    Please excuse my complete lack of knowledge re magnets. I have an application I am looking to solve and am looking for either advise, or a nudge in the right direction as to where I can research the information I need. I am looking to use a ring magnet, sitting on a hollow S/S shaft, then slide...
  14. Tuckabag

    High Youngs Modulus material

    I am trying to locate a material (possibly unobtanium!) with a high Youngs Modulus and low density. Ideally we are looking at a Youngs Modulus of ~200GPa and a density of <4,000kg/m3, however we have a little wriggle room on either. Any bright ideas as I have come up empty. Closest I can find...
  15. Tuckabag

    Isokinetic sample probe design

    A client has requested that we put forward a proposal for design/manufacture of isokinetic sample probes for use on a high pressure, natural gas pipeline in 2 phase regime. We have a lot of experience in non-isokinetic probe design, however I am struggling to find a standard that provides design...
  16. Tuckabag

    Material Physical Properties

    I am helping develop a spreadsheet for calculating probe conformity with ASME PTC-19.3 2014. Can someone point me in the right direction for finding the associated standard/s that will give us Young's Modulus Data and Density figures? We have the tensile/yield data from the material standards...
  17. Tuckabag

    Non-destructive strength tests

    Are there any non-destructive tests available for determining a materials yield strength and UTS? I can't imagine there is, however I am not overly familiar with this type of testing. We have a client who has a bunch of equipment that they have asked us to perform calculations on for determining...
  18. Tuckabag

    O-Ring Groove Design

    Hi All, Does anyone have any references I can look up/purchase with regards to design of both static and dynamic o-rings grooves for high pressure (10,000psi) gas and liquid applications? I've used the Parker o-ring handbook successfully for other lower pressure (approx 3,600psi) designs. I'm...
  19. Tuckabag

    B16.5 Lap Joint Flanges / Dissimilar metals

    Hi. I am sure I am overlooking something here, but I cannot find reference in B16.5 with regards to pressure/temp rating of lap joint flanges using dissimilar metals. I am looking to use an A182 F316/316L hub and A105N flange. My assumption is that the P/T rating of this connection will be to...
  20. Tuckabag

    PC spec for SW2013

    Hi All, We are looking at updating our PC that runs SW2013 - SP2.0. I've been quoted the following spec : Intel® Core i7 4790 3.60GHz, 8mb cache, LGA1150 8GB DDR3 - 1333MHz RAM 1TB SATA3 HDD + 128GB SSD SATA DVD-RW 2GB N610 VGA/DVI/HDMI Graphics Card Windows 7 PRO 64 Bit It looks like more...

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