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  • Users: Martensyte
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  1. Martensyte

    Wound Rotor Motor Torque

    I have an old wound rotor hoist motor that I would like to find the breakdown and locked rotor torque for... or at least narrow it down a bit. It is a "Lancashire Dynamo and Crypto" vintage ~1932, 60 hp, 220V, 900 rpm, 30 min rating. (I've often wondered what the heck a 'crypto' is) I have...
  2. Martensyte

    Mild Steel Rolling/Surface Fatigue

    Hi Group - I'm trying to predict rolling fatigue life for cast low carbon steel of about 165 BHN, and at relatively low cycles (~10^5). Most of the work I've found on the subject of rolling fatigue seems to be oriented towards bearing design, with a sprinkling of work on cams and gears, so all...
  3. Martensyte

    Considering Conversion Coating

    Hello Group, My company builds a line of weatherproof enclosures made from pickled & oiled hot-rolled mild steel sheet which we currently coat by solvent wash, 3 mil industrial epoxy, and 3 mil urethane top coat after final assembly. The enclosures are assembled from pre-manufactured parts...
  4. Martensyte

    SW Design Table Update Problem.

    Hi Group, I've written a VB6 application which among other things attempts(!) to update some info within design tables - it works sometimes, but the problem is getting the DT to be the active workbook. (there is another WB that must stay open in Excel while the program is running and sometimes...

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