Figure 2-64. Welding Limits on Crusher Roll Shells

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Figure 2-63.Preventing Warpage of Crusher Roll Shells

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Welding Materials Handbook

When to Reapply Hard-facing

REBUILDING AND HARD-FACING CRUSHER

ROLL SHELLS (Continued)

8. Correct amperage and stepover will insure proper

bonding of weld bead to base metal. This is

particularly true of high-alloy materials which, by

nature, are very fluid.

The proper combination of welding variables

produces sound weld beads and provides maximum

deposition rate (Figure 2-65).

9. The submerged arc process should not be used for

rebuilding rolls; heat input can cause serious

cracking and roll failure.

FIGURE 2-64. Welding Limits on Crusher Roll Shells

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