Cast grinding balls
High chrome casting grinding iron ball for mining
Application of chrome grinding balls :
1)cement plants
2)mines
3)power stations
4)chemical industries
5)grinding mill, ball mill, coal mill
Features of cast balls:
1) in general, high chrome casting grinding iron balls are famous for high hardness: surface hardness is to 60-68 hrc and volume hardness of 58-65 hrc;
2) high impact toughness: impact toughness is more than 12 j/cm2;
3) low broken rate: the actual broken rate is not higher than 1%;
4) wear-resistant: loss of grinding round rate is 80-500g/ton;
Specification: 20-150mm
Packing term
1) steel drums (with pallet): 850-900kg/drum
2)container bags: 1000kg/bag
The major character of our grinding balls is that: high hardness, no breakage, lower wearing, lower price.
It is mainly used in cement plants, mines, power stations etc.
Our factory manufacture and export high chrome casting ball as follows:
Specifications:
1) diameters: dia. 17 - 130mm
2) hardness: hrc 58-63
3) chemical elements(%):
C:1.9-3.3 , si:0.3-1.0 , mn:0.2-0.8 , cr:10.0-30.0, p:0. 9 max , s:0.9 max
Characteristics:
A) high hardness b) no breakage c) even wearing d) good wear resistance
Applied fields:
A) mines b) cement plants c) power stations d) chemical industry
Outer packing:
Container bags, steel drums
High chrome a
Introduction:
Dry mill casting steel balls for grinding in power plant
Size: diameter 17-150mm
Description:
High hardness, good wear resistance, good toughness, even wearing, no breakage.
Product category:
Low chromium casting grinding steel ball
Hardness: hrc45-55
Part characteristic
The surface hardness of ball will be raised further in using the course, and the wear resistance would gather hard, so can raise mill machine production capacity at the same time, and raises cement ratio surface area and reclaim ratio of the extractive mind.
Details view three W dot chinagrindingmedia dot com or Skype: kathysong0425
Specification:
A: high hardness in+surface hrc 58-65 and core hrc 56-62
B: good wear resistant
C: few breakages
D: no mal-roundness.
Our cast iron grinding balls can be divided into three categories including the high chromium type, medium chromium type and the low chromium type.
1. The quality index of the high chromium type
The chromium content of the high chromium type product is greater than or equal to 10.0%. And the carbon content is between 1.80% and 3.20%. It is required by the national standard that the hardness of the high chromium type product must be no less than 58hrc, and that the impact value should be greater than or equal to 3.0j/cm. This type of product must go through the hot quenching and the tempering treatment to come up to the hardness.
Currently at home, there are two quenching methods for this type of product including oil quenching and wind quenching. If the tested hardness of this type of product is below 54hrc, then it shows that the quenching treatment is omitted.
2.The quality index of the medium chromium type
The medium chromium type cast iron grinding ball is defined as the chromium content ranging from 3.0% to 7.0%, and the carbon content coming between 1.80% and 3.20%. Its impact value should be no less than 2.0j/cm. . The national standard requires the hardness of this type of product should be greater than or equal to 47hrc. For ensuring the quality, the medium chromium type product should be processed with high temperature tempering to eliminate the casting stress.
If the surface of the steel ball assumes the dark red color, it proves that the steel ball has been processed with high temperature tempering. If the surface of the steel ball still comes with the metal color, then, we can judge that the steel ball doesn’t go through the high temperature tempering treatment.
(1) Product
Superior raw materials, advanced automated equipment, unique heat treatment technique and strict quality control system contribute to better performance for the general hardness of shandong iraeta grinding steel ball.
1) production standard Yb/t091-2005
2) size: 25-150 mm
3) surface hardness Hrc57-67 hrc
4) volume hardness Hrc56-64
5) breakage rate <0.57%
6) lost round rate <1%
7) impact toughness 12 j/cm2
8) material : customized raw material, b2, b3, bu chrome
9) forging way: hydraumatic
10) core hardnes =50;=55;=58;=60
11) dropping test: =12000
(2) Raw material
With the purchase of 400 thousand tons of steels each year, we are able to provide customizable raw materials and get vip service from steel plants. All raw materials are purchased directly from standard steel enterprises such as laiwu steel group, shijiazhuang steel, huaiyin steel, etc. The quality of different batches of raw materials is quite stable.
(3) Equipment
Iraeta has 7 full automatic hot-rolling steel ball production lines. We are among the minority of suppliers who are able to directly produce balls with dia80mm and the above size by hot-rolled technology.
(4) Lab
A national certified laboratory in accordance with the international standard iso17025 was established in iraeta.
(5) specialist
1) customized raw material. ( the formal steel material factory)
2) high automatic equipment.( automatic hot-rolling production lines )
3) the unique heat treatment. ( introducing spainsh technology)
4) strict quality control. ( equipped with national approved laboratory meeting requirements of iso17025)
5) iso9001, iso14001 , ohsas18001, etc.
(6) packing
1.Container bag(1000kg/bag)
2.Iron drum
3.According to your requirements
,Quality management system certified ISO 9001:2008.
,Innovative R&D Design
,High end heat treatment technology
,Strict quality managment system
,Short lead time
,Flexiable customer service
