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  • Users: unclesyd
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  1. unclesyd

    HX Tube Extraction Needed

    Here are two sources of tools and expertise in removing tubes. It is always a little problem when you have to remove a tube that has been rolled and seal welded since you have to drill out the seal weld and then break the rolled area loose. As you didn't mention any gauge you may have to have...
  2. unclesyd

    Ceramic Pump Design

    Right off hand the only positive displacement pump that used the piston to set the head clearance is the Milton-Roy pump with ball checks, not poppets. the use of an alcohol carrier does present a problem. flashing when the piston reverses. there is compensation valve that will re mediate this...
  3. unclesyd

    900# Weld neck flange design

    You might want to look at this type of flange. We use quite a few of this type on some in line polymer filter. The mechanics love them, due to the small bolting. http://www.vectortg.com/spo-compact-flange/
  4. unclesyd

    Steel for Skateboard Truck Axles

    I use a lot of the Nitronic 60 and Nitronic 50 for hardware on boats. Probably more Nitronic 60 of the maybe a problem with with galling. We do use a lot of17/4 PH for fishing reel parts with the exception that we use it in condition H1125. Both Nitronic 60 and Nitronic 50 would be good...
  5. unclesyd

    Bearing/Bushing Design

    I would be careful not to paint yourself into a corner. i would try to stay with a std sleeve or bushing. The offerings by Spieth can do a very good job. It looks like something like the Tschudin & Heid Linear Rollers might work in your small envelope. If you can ope up the bearing area envelope...
  6. unclesyd

    Zinc Primer for Potable Water Tank - Will Zinc Become the "New Lead"?

    Here are two products that maybe allow you to blast without the flash rust forming. You will need to see if this product is cleared for Potable water and is compatible with your choice of coating. It is a little strange, but we have one water tank that is still coated with Anhydrous Lanolin...
  7. unclesyd

    Bearing/Bushing Design

    Both of these approaches should be able to carry the load. I'm a little confused as to the actual load being carried by the assembly, but I'll give it shot anyway. I have run Graphalloy plain bearings under some very high loads with great results. In the past these people have been quite...
  8. unclesyd

    Graphite coating of finely woven stainless steel mesh

    Haven't heard of a fluidized bed process for Graphite Coatings. Depending on your end use requirements one approach would be to use a solid film Graphite lubricant. In our process we use the Henkel Aquadag to coat all fasteners on our polymer lines. No fastener is made up without the Aquadag...
  9. unclesyd

    What type of grease for high RPM fans?

    I would contact L.E., as they can get you the proper viscosity grease for you application . You can probably get a sample I've never had any any Eureka moment using micronized Teflon additives in oil and grease. Not all fluorocarbon base lubricants are created equal. We have had very good...
  10. unclesyd

    Difference between AFLAS O-RING and BUNA O-RING

    There is a world of difference in the materials, Aflas being a Fluoropolymer and Buna-N being a Nitrile Rubber. Though both have their limitations the Aflas covers more ground, though at a higher cost. A key point is if you are able, is to check it out in the fluid you are going to exposed...
  11. unclesyd

    manway size 700 mm dia 1800 mawp

    Sorry about my comments concern you ability to design such a manway. The question just looked strange as presented. Having seen some very big problems with such equipment I get a little nervous. We have worked with the following on several occasions, though not in the size range you require. I...
  12. unclesyd

    What type of grease for high RPM fans?

    Here are two several products LE 1275, LE3752, and Krotoxs xtat we use extensively on several types and sizes of plain bearings. I can't recall any lubrication problem with any of bearings on the units. These air handles run 24/7/365. The operating environment is high temperatures and high...
  13. unclesyd

    Low Thermal Input MIG Welding???

    You need to take a look at this relatively new process. we are currently using it to weld 2205 Duplex SS. It fast and the heat input is definately lower. This process is actually a variant of the older hot wire TIG process. Welders don't seem to any trouble picking up on...
  14. unclesyd

    ESD

    Hope this turns out better than the last attempt. This not one of my photographs. http://files.engineering.com/getfile.aspx?folder=78d06cbb-867b-4601-839f-c17501cf79ba&file=Syd_pictures_004.jpg
  15. unclesyd

    Suitable material for workholding.

    Here are two sources of tool steels mention in the above post. The larger size is is going to be a problem as the there are not any producers around. Beware of foreign steels, a local shop got burned bad a couple of months ago. Stay with the air hardening material and harden at the secondary...
  16. unclesyd

    ESD

    BigInch, Here is picture of a ruptured pigtail off a 16 position manifold that was running slow so there was an attempt to slightly warm the pipe. The pressure at this point is around 900 psig @ 285°C. This failure is a little different in that you can see the Nylon Polymer. In lines that are @...
  17. unclesyd

    New Engineer in the Bearing World

    You need to checkout the link posted in thread821-327371. by mfgenggear
  18. unclesyd

    New Engineer in the Bearing World

    I too recommend the SKF literature, I don't know if you can still get a paper copy of the catalogue or not. No you can't have mine. Here are several reputable sources of the training you need. http://ecom.training.dupont.com/BRG002-INT-ENG(CoastalU)/IS...
  19. unclesyd

    manway size 700 mm dia 1800 mawp

    I can't emphasize enough that the suggestion given by TD2K about getting help as fast as you can. Your requirements present some very specialized design and associated fabrication problems. In my opinion this project needs to given to a firm that specializes in a POWER BOILERS. Do not try...
  20. unclesyd

    Measuring the Resistance in a Rod to Indicate Cracking?

    Take a look at the first item on this page. it is a USB AE Node that hopefully will not break the bank or it maybe possible to rent/lease one. PAC used have very good technical support, it might still be there. http://www.pacndt.com/index.aspx?go=news&focus=Product%20News.htm

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