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 TugboatEng 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. DAVIDSTECKER

    Design for manufacturing - Laser Cutting or Water Jet Cutting technologies

    Years ago, when having parts laser cut, even with low carbon 1018/1020, there is a heat effected zone that is very hard. It was a big problem when we tried to tap the holes. I ended up using a 1008 steel.
  2. DAVIDSTECKER

    Help changing direction electric phase 1 motor

    Here is a spec sheet for a motor I've used. Wiring diagram is on the last page. https://res.cloudinary.com/engineering-com/image/upload/v1728657533/tips/36L553Y104G1_Customer_information_packet_fhpegz.pdf
  3. DAVIDSTECKER

    Sizing Shaft Diameter

    The way I see this you're applying the entire 30,000# directly to the mid-point of the shaft and using a moment arm of 45". The drum should carry the force out to the flanges, then to shaft. Best case loading is mid-point of the drum, 30,000 / 2= 15,000# Worst case, all 30,000# one end, up...
  4. DAVIDSTECKER

    Eductor causing Foaming in my tank (system drawing attached)

    Look for some sort of "Float Valve" that will shut of when the level drops to a certain point. When the level rises, then the valve opens and lets the fluid get sucked out.
  5. DAVIDSTECKER

    Seeking Advice on Optimal Chemical Composition for Tooth Adaptor Casting in HEMM Buckets.

    EdStainless, we're making non-magnetic anchors for the Navy out of A128, so we use their drawings and specs. We do make some parts from CF8M that we send out for pickling/passivating per ASTM A967 Nitric 5. It does reference A380. The castings are for the guiding the ropes on Ocean going tugboats.
  6. DAVIDSTECKER

    Seeking Advice on Optimal Chemical Composition for Tooth Adaptor Casting in HEMM Buckets.

    @EdStainless, I found the Mil spec. Some of it didn't copy right, but I think you'll get the jest of it. MIL-S-17249 I love the part about the Government not having any responsibility if you use this for non-government work. 6.3 piC!diM. - A 1:1 hydrochloric acid solution at afiroximately...
  7. DAVIDSTECKER

    Seeking Advice on Optimal Chemical Composition for Tooth Adaptor Casting in HEMM Buckets.

    @EdStainless, I'm looking for the document that stated the acid and concentration, the passivating company in Kansas was freaked out by how aggressive it was. We were etching the black scale off so they would be non-magnetic.
  8. DAVIDSTECKER

    Meehanite Grade E

    If I recall correctly, Meehantie was a trade name of a particular foundry back in the day. I have some gears I still make for machines that go back to the 1930's or there about. The drawing only calls out "Meehanite". I believe it was an old-timer metallurgist that told me that to use Class 40...
  9. DAVIDSTECKER

    Seeking Advice on Optimal Chemical Composition for Tooth Adaptor Casting in HEMM Buckets.

    We make ships anchors out of the A128 for the Navy for its non-magnetic properties. Thats after we remove the scale which is very labour intensive or a VERY scary acid bath.
  10. DAVIDSTECKER

    Seeking Advice on Optimal Chemical Composition for Tooth Adaptor Casting in HEMM Buckets.

    Have you looked at ASTM A128; Hadfield manganese? It the cast version of the AR plate used in the earth mover buckets, rock crushers.
  11. DAVIDSTECKER

    TurboGenerator Journal Bearing Shaft Surface Finish - Too fine?

    There are a few examples of where having a "rougher" surface is desirable. One is the crosshatch pattern in an engine cylinder to hold a layer of oil and help seal the piston rings. I belief that the oil impregnated bushings recommend a 32rms to hold a layer of lub. There is a marine paint...
  12. DAVIDSTECKER

    Desired front/rear brake balance - per GM early 1960s

    I have found that my 1999 Suburban front brakes will lock up first on snow and ice if I leave it in drive. If I put it in neutral, I have more control. I have a 1993 manual pick up which is where I got the idea to put the automatic in neutral. It takes the extra force off the brake shoes.
  13. DAVIDSTECKER

    Making drawing and taking measurements

    May be print out a big piece of Graph paper, place the cover on it and trace it. It's a lot easier to measure it when it's all on the same plane and solid surface.
  14. DAVIDSTECKER

    Alternat; ASTM A487 Gr10B

    MFAMET; Thank you for the input. Sorry about taking so long to respond, I've been traveling, and things are nuts at work. Best regards, David
  15. DAVIDSTECKER

    Filter Disassembly/Replacement

    It's been a long time ago, but if I recall, the filter system in the powder coat booth in a place I used to work at, had a "Back Flush" built in that would release a pulse of air to blow off the excess powder. I believe that there were 4 really big PTFE cartridges in it.
  16. DAVIDSTECKER

    Alternat; ASTM A487 Gr10B

    I'm looking for recommendations for an alternative to ASTM A487 Gr 10B. A487 is for Pressure Service castings and requires a lot of heat treating to process. Many years ago, our Metallurgist, who has since passed, selected this material to cast hammer heads out of. We hadn't made any of these...
  17. DAVIDSTECKER

    Winch with remote pendant control, variable speed drive

    Try Thern Winches. They do offer VFD drive with pendant.
  18. DAVIDSTECKER

    Filter Disassembly/Replacement

    If they are PTFE material,( looks like it in the photos) you may be able to wash them with water. I've had one for my shop vac for about 30 years, I just back flush it with air and rub the fins. It's as good as new after that.
  19. DAVIDSTECKER

    Where to find samples of Lubricants?

    Keep pulling the string. If you don't get anywhere going through their web site, talk to the local distributors and get names and number of their contacts and keep climbing up the chain of command. Ask to speak with application engineers, anyone on the technical side of things. Pick peoples...
  20. DAVIDSTECKER

    kill switch for vehicle brakes

    Hillard has disc brakes of different styles. Stearns also some disc brakes, and DC coils for the electric motor brakes. If you have a hydraulic system as part of your machine, you could add an accumulator and some dc valving and use automotive callipers.

Part and Inventory Search

Back
Top