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 High and low Chrome cast iron grinding balls 
grinding ball ; Chrome steel ball ; casting ball
1.Size:Dia20-150mm

2.Characteristics:high hardness,good wear resistant,no breakage,no deformation

3.Hardness: 50-65HRC

  4.Appliedfield: cement, metallurgy, mining, and electric power

 5.Material: high/medium/low chrome, multi-alloy, bainite

 6.Function:grinding

 7.Break Rate <1%

 8.Drop Number:8000-12000

 9.process:

 Selection of high-quality scrap steel--Arc furnace melting--Constant temperature casting a molding--Whipped system--Heat treatment--Casting products detection--Storage assembly factory

 Specification

   High and low Chrome cast iron grinding balls 

 The Product Description

 Chemical Composition

16-18% chrome alloy casting grinding balls 

   High hardness cast Grinding ball in grinding machine for cement ,Mine and power plant 

grinding ball ; Chrome steel ball ; casting ball

About the hardness

How hard is hard? The illustrations shown below tell an interesting story. Illustration ‘A’ shows an analysis of the cross sectional hardness of The Steel Ball Company’s ‘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 Steel Ball Company’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 The Steel Ball Company’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 The Steel Ball Company’s ball perform?

A The cross sectional hardness profile shows that The Steel Ball Company’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. The conclusions are obvious. High quality such as The Steel Ball Company offers always saves money in the long run. AVH =0.289 x Surface Hardness (S) + 0.437 x Hardness 3/4 R + 0.203xHardness 1/2 R + 0.063 x Hardness 1/4R + 0.008 x Centre Hardness (C)

grinding ball ; Chrome steel ball ; casting ball

Pakaging&Shipping

Packaging   cement plant grinding media iron casting balls 
Package with standard ton bags or Iron Drum,  1 Ton/Bag or 900kgs /Drum,and 25 Bags or 28 Drums in one 

1X20GP in normal condition .

Shipping 

1. FedEx/DHL/UPS/TNT for samples, Door-to-Door;

2. By Air or by Sea for batch goods, for FCL,LCL Port receiving;

3. Customers specifying freight forwarders or negotiable shipping methods;

4. Delivery Time: 3-7 days for samples; 5-25 days for batch goods.

 Trading Process : 

Inquiry→Reply → Discuss → Received payment& Start Production→Testing & Packaging →Delievry →Received 

→  After Sales Service .

   High and low Chrome cast iron grinding balls 

Assurance & Testing

*The each melt will be analyzed for Chemical Composition;

*The hardness will be measured on 5 balls selected at random from each heat treatment batch;

*Two ball at least will be selected randomly from each heat treatment batch for micro-examination; 

*The diameter test and all the above mentioned  test will be showed and carried  out on the templates;

* Sand and Slag inclusion will not existed  ;   

* Depth of defect is more than 2mm will not existed;

* Mismatch per face is more than 1.0mm will not existed ;

* All casting balls will be properly fettled,tumbled and dressed,all surface shall be thoroughly cleaned .

grinding ball ; Chrome steel ball ; casting ball 

Instructions

When using HOUDE products,please pay attention to the following items:

1.Due to different inner structures and hardness of similar products made by different companies,please

 don’t mix our products with those of other companies,or it will be subject to deformation.

2.Please control the grain size of raw materials and the proportion of grinding materials to grinding 

medias.Unreasonable proportion is bad for the use of our products.

3.When using the products,please do not pursue product fineness at the cost of reducing the output .

Otherwise ,our products will be exfoliated and out of shape.

4.In the process of using our products,the mill could not be opened or stopped frequently,or operated

 without any materials in it.Before putting the casting balls into the container,please put some materials

 in the lowest floor in case of breakage,clashing and so on.

5.Open the door of the mill at first and pour the balls out when the temperature in the mill falls down .

6.If you find something unusual in the process of using,please contact us immediately and we will arrive

 on the spot as soon as possible.

  grinding ball ; Chrome steel ball ; casting ball 

Company information

Jinan Houde Abrasion Resistant Materials Co.,Ltd located in the scenic city of Zhangqiu,adjacent to State 

Road 309.Houde is one of the largest manufacturers and exports in grinding rod and grinding ball in China.

With the annual production capacity of 60,000 tons,we have advanced production equipment and experienced

 technical staff.Our products performance have reached the advanced international level.Houde has obtained

 the ISO9001-2008 international quality system certification and also the ISO14001-2004 international 

environmental system certification.

    Jinan Houde Abrasion Resistant Materials Co.,Ltd is based on the idea of “Stable products to be oriented

 rooted on quality,with professional technology to striving for excellent,with the new grinding media to make us 

strong”.We invested heavily in designing the only one grinding rod production line in China,which is also the 

most advanced.The production line is fully controlled by automatic microcomputer,except for automatic process

,the temperature of all the parts of the line could be exactly examined and controlled.All the specifications of 

the grinding rod products are superior to other similar products in the market.And it is fully accepted and 

satisfied by our clients.