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Hardfacing & Corrosion Resistance in Steel Plants |
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Wear Resistance for Thermal Shock
Steel Plants encounter costly problems of wear as the result of high temperatures and abrasive materials. These result in frequent periods of downtime for maintenance and repairs. The benefits of hardfacing are considerable and Corewire is at the forefront of this technology, supplying know-how and materials across the globe,
The list of current and potential applications in any steel plant is extensive and varied. Any production or support process that experiences wear, metal to metal contact, has a high operating temperature or is vulnerable to corrosion can be considered suitable for hardfacing protection |
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Wear Resistance Example applications
Corewire’s hardfacing wires can be used in the following:
Sizing screens |
As in the sinter plant |
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Pick & hammers |
Used in raw materials processing, e.g. ores or coke |
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Crushers |
Ore and other raw materials processing |
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Hoppers |
Internal faces of alloy-addition hoppers |
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Blast furnace bells |
Seals/seats around the base of the bell |
The seals of the blast furnace bell-hoppers are a typical example of Corewire’s approach to fitting the solution to your requirements. The double-bell hopper system is well established in blast furnace technology, and is essentially two cones placed one above the other used to add the ore, coke and limestone burden to the furnace, whilst preventing the escape of blast furnace gasses.
The seals around the bottom rims of the bells are exposed to a high temperatures and regular abrasion by the burden, leading to significant damage & a short service life. Removal and replacement of these bells is not only an expensive operation, it is also complicated, dangerous and can lead to a long interruption in production.
Thermal Shock & Abrasion Resistant Weld Metal
In answer to these problems, Corewire have developed CC45, a complex carbide weld metal that has excellent high temperature (up to 650°C) abrasion resistance. CC45 is currently engaged in plant trials in India and to date has produced some excellent results.
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