Figure 2-63.Preventing Warpage of Crusher Roll Shells

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Rebuilding and Hard-Facing Crusher Roll Shells

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Welding Materials Handbook

Figure 2-64. Welding Limits on Crusher Roll Shells

REBUILDING AND HARD-FACING CRUSHER ROLL SHELLS (Continued)

As roll contracts after welding.

Normally tension on wedge bolts

During welding, manganese shell

end tapered edges is exactly the same all

expands, causing wedges to pull in.

wedges-unless Ioosened prior to welding-

around shell to assure positive seating.

do not back out and shell may dish or

crack.

FIGURE 2-63. Preventing Warpage of Crusher Roll Shells

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