Body Bound Ladle J-Hooks

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Advantages of Bolted Ladle Hooks:

  1. Body bound high-strength shoulder bolts are utilized in place of the current practice of rivets. The quantity of bolts meets the same requirements as rivets per AISE Technical Report No. 7.
  2. The material and strength of the bolts can be compared to rivets as follows: Bolts—AISI 1045, Ultimate = 86,000 psi min., Yield = 54,000 psi min. Rivets—ASTM A31, Grade A, Ultimate = 45,000 psi min., Yield = 23,000 psi min.
  3. Torqued high-strength bolts pull laminated plates tighter together than the existing practice of rivet installation.
  4. Body bound bolts do not allow shifting between plates. By comparison, holes for rivets are 1/16″ greater in diameter than the nominal diameter of the rivet.
  5. Reuse of existing riveted ladle hook plates can be performed by installing larger body bound bolts sized for each specific application.
  6. Dismantling and subsequent repair of bolted ladle hooks is much easier than for riveted hooks, reducing the overall cost.
  7. Current experience with bolted ladle hooks has resulted in an expected service life increase of 4 to 5 times that of riveted hooks.




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