A GLOBAL REPUTATION FOR LEADING-EDGE MANUFACTURING TECHNOLOGY.
Suizhou Gaincin Machinery Co.,Ltd(GAINCIN.com & showroom: )'s
steel grinding media is a valuable commodity widely used in power stations for
coal grinding, limestone grinding for flue gas desulphurisation, cement
production, aerated building block manufacturing and in the mining industry,
especially in gold, silver, copper and zinc mines.We also produce mild steel balls
for use in ornamental ironwork to act as decorative finials on steel gates and
railings.
Rolled Steel Balls
The major advantage of precision ball rolling, compared with traditional forging
methods, is the uninterrupted grain flow. Grinding balls are rolled from selected
carbon and alloy steels, produced to a customer’s precise specifications.
A special feature of GAINCIN’s manufacturing process is the computerised quench
facility, giving uniform surface hardness and controlled cross-sectional hardness
essential for very even wear.
Quality Control and Hardness Measurement
In the long term, the effectiveness of grinding media must be measured by the
final cost per tonne of product efficiently ground.GAINCIN's advanced
manufacturing methods and materials guarantee the maintenance of the geometrical
tolerances and correct structures vital to reliable, consistent performance and
long life. GAINCIN’s products are rigorously tested to ensure that they meet the
agreed specifications.
BALL HARDNESS:THRU HARD’OR‘TOUGH CORE’
GAINCIN’s expertise will ensure that you specify the most suitable grinding media
for your particular application. GAINCIN’s ‘thru hard’ ball has a uniform high
hardness from surface to core, thus maintaining very good wear properties down to
very small diameters.The ‘tough core’ ball has a hard outer layer for long life,
coupled with a tough, resilient core giving good impact resistance.
Presenting the Hard Facts on Average Volumetric Hardness How hard is hard? The
illustrations shown below tell an interesting story.
Illustration ‘A’ shows an analysis of the cross sectional hardness of GAINCIN
‘thru hard’ ball. Illustration ‘B’ below shows the same analysis carried out
on a ball from another major grinding media manufacturer. The ball in illustration
‘B’ has the same AVH figure as The GAINCIN’s ball and will wear out at the same
time. Yet there the similarity ends. After three quarters of the radius, the
hardness of the ‘B’ ball dips below that of GAINCIN’s ball. This brings into
focus the area of greatest discussion about using AVH values. Over 72% of the
final value is made up from the surface and 3/4 radius hardness readings. So AVH
tells us relatively little about how a ball is going to perform once it has worn
past that stage. The cross sectional hardness
profile tells the full ‘inside story’.
Q What kind of performance will the ball in illustration ‘B’ below give?
A Once the ball has worn down to approximately 2/3 diameter, the remainder will
wear away very quickly.
Q How will this affect the mill output?
A The rapidly wearing grinding media will give rise to an unstable and imbalanced
ball charge, resulting in the possibility of more than one top up size being
required to ensure the correct mesh of grind.
Q How will GAINCIN’s ball perform?
A The cross sectional hardness profile shows that GAINCIN’s ‘thru hard’ ball
will wear evenly throughout its life. This will give a better size distribution in
the mill, and avoid ‘dead zone grinding’. The shape of the ball will be
preserved for much longer, giving a far more efficient grind.
AVH =0.289 x Surface Hardness (S) + 0.437 x Hardness 3⁄4 R + 0.203
x
Hardness 1⁄2 R + 0.063 x Hardness 1⁄4 R + 0.008 x Centre Hardness (C)
The conclusions are obvious. High quality such as GAINCIN offers always saves
money in the long run.
Suizhou Gaincin Machinery Co., Ltd
Address: no.1704,economic and technical
development zone,Suizhou,P.R.China
E-mail:Info@gaincin.com | Kimy.Lee@gaincin.com
Candy.Wu@gaincin.com
Tel: 86-722-358 8806
Fax: 86-722-358 8806 x 8002
Website:
Showroom:
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