LINERS AND WEAR RESISTANCE_proof 23/08/2016 15:30 Page 2
LINERS AND WEAR RESISTANCE
custom parts are used by mining OEMs,
integrators, and miners around the globe.
Alumina ceramics are the most common wear
solution for many mining applications. When
increased impact resistance is needed, ZirconiaToughened Alumina (ZTA) adds the toughness of
zirconia. For the most abrasive and harsh
environments, CoorsTek UltraSiC™ Silicon
Carbide materials provide superior strength,
hardness, and thermal stability. “The best
choice of ceramic material really depends on its
value in your specific application,” explains Greg
Bowman of CoorsTek. “Whether you need a
long-lasting conveyor tile or a lower cone for a
hydrocyclone where downtime is not an option
— your ceramic supplier should help guide you
through the benefits and tradeoffs to the best
material for that situation.“
CoorsTek recently developed a new AD-92
Plus material that has already demonstrated
superior abrasion and impact resistance to other
alumina materials in both lab and field testing.
And the company continues to focus on
engineering new advanced ceramics for mining
applications. Earlier this year, CoorsTek
announced an investment of $120 million to
create a new Center for Advanced Materials in
Golden, Colorado. “CoorsTek has been a leader
in engineered ceramics for more than a century,”
said Michael Coors, Co-CEO at CoorsTek. “This
investment will allow us to push the frontiers of
technology into the next 100 years.”
CoorsTek and Colorado School of Mines have
been collaborating for more than a century. In
May, officials from Mines, CoorsTek, and the
Coors family broke ground on the new CoorsTek
Center for Applied Science and Engineering, an
CoorsTek CeraSurf® ceramic wear tiles, just one
of its myriad products that include alumina
wear resistant compositions, silicon carbides
and ceramic bricks for superior wear linings in
or on chutes, cyclones, hydrocyclones, elbows,
fan blades, mills, pipes, silos and more
126 International Mining | SEPTEMBER 2016
interdisciplinary academic and research facility.
In 2014, CoorsTek and the Coors family
announced a $27 million commitment to fund a
research partnership and the construction of
this new, modern facility. “Our investment in
Mines is not only an investment in the future of
our company and a great university ─ it is an
investment in solving global challenges,” said
John Coors, Chairman of CoorsTek.
ArcelorMittal Europe’s Amstrong® Ultra and
Relia®, are new ranges of ultra-high strength
and wear-resistant steels for building the
mechanical equipment of the future.
Amstrong Ultra allows manufacturers to
reduce steel thickness and weight in mobile
equipment.
Relia® is ArcelorMittal’s range of high
hardness, low-alloyed martensitic steels,
offering outstanding resistance to abrasion –
typically three to six times higher than classical
construction steels in the 355 MPa range, while
offering a significant weight reduction. Principal
applications areas include mining and mineral
processing.
Yves Boudart, Sales Director of Industeel,
explains: “Weight savings and longer lasting
components are essential to modern mechanical
engineering industries to improve performance
and reduce operation costs. Amstrong® Ultra
and Relia® offer the full package solution that is
expected from our customers, no matter how
the product was produced, as a hot-rolled strip
or a quarto plate.”
For example, thanks to its wear resistance
and good formability, Relia 400 is an excellent
choice for truck bodies.
Real Steel is the first winner of the Hardox®
wear plate Award. The
competition was
introduced this year by
SSAB to provide
recognition to Hardox
Wearparts centres for
their innovativeness and
product successes for
applications in the
aftermarket.
Real Steel is one of
more than 200 such
centres located worldwide
that provide wear parts
and wear services for
mining. For this
application, Real Steel
worked on site with
customer, Sollys
Contractors that provides transport,
construction and earthmoving services, and was
looking for a solution for its rotor discs that
wore out quickly. Working together with Real
Steel’s wear engineers, they designed a
laminated disc made from Hardox 500 and
Hardox 550. The result—total wear life of the
rotor increased by three times and production
costs were reduced by 30%.
Previously the rotor discs were hardfaced
which was time consuming and expensive. The
uneven wear on the rotor discs required that
they be removed frequently and re-hardfaced
and balanced. Frequent hardfacing led to fatigue
and cracks in the base metal.
“Our solution extended the wear life while
removing the hardfacing and need for rebalancing the rotors,” said Luke Mathieson,
Managing Director, Real Steel. “The solution
also created even wear on the rotors.”
Nancy Matos, Market Development for SSAB
Services said: “this is one of the great benefits
our centres gain from being a part of the Hardox
Wearparts network—the ability to share ideas
and gain inspirations from other centres to help
grow their business.”
Herman Johnson in Sweden won second prize
for its Toolox bucket. Hardox wear steel has
unique properties for excavator buckets. Hardox
combines high hardness with valuable
workability properties. This means that the
bucket will last longer and that wear parts will
be easier to change.
The “Hardox in my body” sign on the bucket
is a users safeguard, SSAB says, “that, in
addition to buying a bucket with the highest
possible wear resistance, you also have a bucket
that will retain its shape and is weldable.”
Laser cladding is the process of adding a pure
metal or an alloy in its powder form to a new or
damaged component for wear, corrosion, or
abrasion protection or for salvaging worn parts.
The use of lasers for materials processing and in
particular laser cladding, is a relatively new
development. LaserBond first trialled lasers in
1999, building one of the world’s first high
powdered laser cladding systems in 2002. Laser
cladding has received significant attention and
development in recent years due to its unique
features and capabilities in various industries
involved in metallic coating, high value
component repair, prototyping, and low volume
manufacturing.
Davies Wear Plate Systems and Australian
Ceramics Engineering (ACE) have created an
exclusive partnership to manufacture and
supply a unique range of (wear side only
attached) ceramic wear liner products. The new
wear liner products will combine the low cost
global supply chain for ceramic liners developed
by ACE, with the Davies proprietary wear side
only attachment system.
The new partnership creates a ceramic wear
liner now able to be installed and removed from
the wear side only, without the need for hot
works or direct bonding, across a broad range of