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  • Users: umreng
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  1. umreng

    Overhead Traveling Crane Overload

    I am looking for guidelines to follow and/or requirements to satisfy in the event of an accidental overload of an OHC hoist. (I am aware of the ASME Engineered Lift criteria which includes a maximum frequency of 2 such lifts in any 12 month period and required pre-lift inspection, post-lift...
  2. umreng

    Anchor Bolts, Base Plates

    We are installing a new 60 ton overhead crane runway, and the structural engineer recommends a leveling nut be installed beneath the base plate to achieve a level structure and hold the structure in place prior to tightening the anchor bolts and grouting the base plates. I always thought it was...
  3. umreng

    Safety Boots ANSI Z41 PT99

    Our safety rules require safety boots which meet ANSI Z41 PT99. We do not have a copy of this standard. (It is quite pricy.) Does anyone have a copy they can let me use for a short while?
  4. umreng

    Cracking problems in Heat treating 4340

    I have some critical service pivot pins in a heavily loaded piece of plant equipment for which I am having spare pins manufactured. My original equipment supplier furnished details of the pins and associated parts at time of order placement several years ago. The drawings include the required...
  5. umreng

    Tool Steel

    I am looking for a good publication or two on application engineering of tool steels. Specifically, shock and wear resistant tool steels like AISI S-7. My interests are in specifications for heat treatment and practical hardness ranges of shear knives for cold shearing of steel plate.
  6. umreng

    Silver Soldering Copper Pipe - Flux or no flux?

    When silver soldering copper tubing, is it required or advisable to use a soldering flux. The application is a direct bury potable water supply line, size 2".

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