To prevent wear and extend the service life of components, wear plates are utilized in power plants, cement companies and many other industries. The following is a case study about the use of overlay wear plates in the mining industry.
Problem
The study is based on a problem in an underground molybdenum mine in Colorado. A number of 90 ton side dump haulpak trucks transport ore to a primary crusher from loading chutes. The ore is dumped into the crusher via two lower slide doors of the truck that are lined with 13 mm Brinell 500 wear plates. The sliding causes severe abrasion, thus requiring mandatory replacement of the Brinell 500 wear plates after six months.
Features of NanoSteel Overlay Wear Plate
A solution was tested to prevent the frequent replacement of the Brinell 500 wear plates by using NanoSteel SHS 9700 overlay wear plates instead, on one of the trucks. The NanoSteel SHS 9700 overlay wear plates provide greater resistance to abrasion with extended service life.
| Wear Plate |
Type |
Thickness |
Overlay |
Substrate |
Hardness |
ASTM G65-04, Procedure A |
| NanoSteel SHS 9700 |
Overlay |
1/2” (13 mm) |
1/4” (6 mm) |
1/4” (6 mm) |
66 - 69 HRc |
0.13 g mass loss |
| Brinell 500 |
Q&T |
1/2” (13 mm) |
- |
- |
49 - 53 HRc |
1.20 g mass loss |
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Figure 1. NanoSteel SHS 9700 overlay wear plate, 1/4” (6 mm) overlay on 1/4” (6 mm) substrate
Benefits of the NanoSteel SHS 9700
The underground molybdenum mine greatly benefited due to the replacement of the Brinell 500 wear plates with the NanoSteel SHS 9700 overlay plates.
- The mine managed to eliminate the three pairs of replacement wear plates
- The service time of the truck was increased
- The production output and revenue was increased
- The manpower hours during three replacement cycles was avoided
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Figure 2. NanoSteel SHS 9700 has demonstrated a 4x improvement over Brinell 500 wear plate
Summary
The NanoSteel SHS 9700 overlay wear plates was continuously used even after hauling over 3 million tones during a 28 month period, in contrast to the Brinell plates which had to be replaced every 6 months.
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About Nanosteel
The NanoSteel Company is an advanced materials company which has created a unique and proprietary portfolio of nanotechnology based and environmentally friendly steel alloys that greatly increase the value of steel in most of today’s industrial applications.
Product success has been through the development of Super Hard Steel® (SHS) alloys which feature nanoscale microstructures. SHS alloys are for use as metallic coatings within power generation, mining, cement, concrete and oil & gas industries.
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This information has been sourced, reviewed and adapted from materials provided by Nanosteel.
For more information on this source, please visit Nanosteel.