Good wear 70mm cast iron grinding ball for Mine Mill supplier
1.Produce all kinds of wrought iron,wrought iron scrolls,baskets,rosette,spearhead,baluster,railing,studs,forged leaves,forged flower,gate,casted steel leaves and
2. OEM & ODM acceptted according to drawings and pictures
3. Special surface treatment on finished products
4.size can be customized as you requirements
|Items||Brand||Surface hardness(HRC)||Endurance impact test(Times)|
|High chrome casting alloyed ball||Cr20||≥56||≥45||≥8000|
|High chrome casting alloyed ball||Cr15||≥56||≥45||≥8000|
|High chrome casting alloyed ball||Cr13||≥56||≥49||≥8000|
|Middle chrome casting alloyed ball||Cr7||—||≥48||≥8000|
|Low chrome casting alloyed ball||Cr2||—||≥45||≥8000|
|Bainite ductile casting alloyed ball||Si3||≥50||—||≥8000|
Applied fields of our grinding balls:
b) Cement plants;
c) Power stations;
d) Chemical industry
The production process of the forged grinding balls:
1). Raw material:
All the material is qualified with certificate and made in the
Chinese largest steel production enterprise.
2). Different steel specifications ccording to the clients's
Main Steel Material :C45 Steel;60Mn Steel;B2 Steel
3). Steel Cutting:
the steel bars should be cut into small pieces according to the
size of steel balls required by the order.
we use the electric furnace instead of the traditional coal stove,
the biggest advantage is that all the steel bars can accept the
most approriate temperature during the heating progress. It affect
the hardness and toughness directly.
5). Hammer forging:
The raw material is forged to a certain deformation by the air
hammer, when the compression ratio increased, the micro-structure
become more compact so that the hardness and the toughness can be
6). Heat treatment:
Both the water quenching heat treatment production line and our own
temperature control technics are important.
We have mature production technicians responsible for the heat
treatment process as we know this process affect the grinding balls
7). Quality Control.
Raw material test before production
Hardness test Drop Test Impact Test Core pulling Test after
SGS test before delivery
Certificate: ISO 9001:2008
Quality control for each production shift (4hours/Shift);
Hardness, chemical elements and impact testing after production for
each production shift;
SGS –third party testing before each delivery
1.Bags:1000KG polypropylene bags which are highly resistant to UV rays
and secure bag straps to reduce time and effort in loading and
2.Drums:Recyeled drums can also be supplied. The drums have a removable
lid and compression ring for secure storage.Drums are more
efficient for some modes of transportation and can also be
delivered on wooden pallets.
1.Port of Loading: Qingdao Port,China
2.Partial shippment allowed
3.By DHL/TNT express for samples order.Door to door to delivery;
4.Appointed freight forwarder by customers is acceptable
1. Free samples for your test before orders;
2. Soonest delivery time ;
3. Cooperate with many famours shipping companies,and sent the
goods to your port safe and in time;
4. Any feedback after sales would get our soonest reply.
WE LOOK FORWARD TO THE OPPORTUNITY TO DISCUSS HOW WE CAN BECOME A
PARTNER IN YOUR SUPPLY CHAIN SOLUTION .