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How to Separate Hot-Rolled Bars of Steel

Hot-rolled steel bars are bars melted and shaped at temperatures above the re-crystilization temperature of steel. The bars are rolled between two sets of round rollers to form the metal into the desired shape. Separating hot-rolled bars of steel is no different than separating other kinds of metal or steel. A steel bar may be held in place by rust and contamination. Other materials, such as foam or cement, may also keep steel bars in place. The only way to separate hot-rolled steel bars is to clean the contaminants from the surface and remove the exterior material. A variety of tools can complete this job, depending on the material holding the steel bars together.

Things You'll Need

  • Lye
  • Metal pot
  • Zinc oxide
  • Soft cloth
  • Chisel
  • Jigsaw
  • Jackhammer
  • Screwdriver
  • Ratchet set
  • Safety goggles
  • Ear protection
  • Dust mask
  • Belt sander
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Instructions

  1. Cleaning

    • 1

      Mix two parts lye and one part water. Boil this lye mixture in a metal pot on the stove. Add 1 cup of zinc oxide to the mixture. Allow the mixture to boil for about 10 minutes.

    • 2

      Pour the mixture over the hot-rolled steel bars. The rusted particles on the steel should try to bond with the positive charge in the liquid, removing it from the surface of the steel. Repeat this process until all rust is removed.

    • 3

      Clean the surface of the steel bars with a soft cloth to remove any leftover residue.

    Removing Exterior Materials

    • 4

      Inspect the materials surrounding the hot-rolled steel. This material could be wood, cement, foam or other materials. Choose the appropriate tool based on the surrounding material. Use a jackhammer for masonry, a jigsaw for foam or wood and a chisel for smaller pieces of materials.

    • 5

      Remove any screws or fasteners holding the steel pieces in place using a screwdriver or ratchet.

    • 6

      Wear safety equipment while removing the exterior materials. Chip away slowly at the material so you do not touch the metal itself. When the steel is loose enough to pull out, pull it away from the exterior material.

    • 7

      Chip off any remaining materials with a chisel. Sand the surface smooth with a belt sander.