dia.4" to 5" grinding media mill balls, forged steel rolling balls, grinding media forged steel balls

 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
Te , l: 86-722-358 8806
Fax: 86-722-358 8806 x 8002
Website:
Showroom:

Suizhou Gaincin Machinery in the factory & inner scence  

Grinding media in the production quality & test in Gaincin company

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forged & rolled steel grinding media balls in the flowing chart

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