The Spear on a portable crane of 15 meters in length was extensively damaged by electric cables, swinging chains and straps.
The crane was in for a major overhaul so the owner wanted the spear replaced. Replacement had to be imported from UK and time for delivery was 12 weeks.
Brush plating was another option as grinding and tank plating was in excess of the capacity in New Zealand. |
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Conventional repair.
- Remove Spear Machine.
- Import new spear and cylinder from UK
- Time approx 12 weeks
- Estimated cost Approx $40000
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Selective Brush Plating Repair
- Remove ram from machine.
- Mask area's
- Electroplate copper
- Dress back
- Cap with nickel cobalt
- Time approx 6 days
- Cost approx $24000
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This example shows that a considerable amount of savings in time can be achieved by using the brush plating method.
The repair was carried out by two people over 6 days on many dents, scores and scratches. Although the savings in money terms was not great, the time was more important as down time is money.
Brush electroplating was the best method for this repair under the circumstances.
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