We set up a professional technical team with the cooperation of research institutions, colleges, and universities. For instance, chinese academy of sciences are our direct cooperator, professor mr bern klein university of british columbia, canada is one of our team members.
1.Material: b2, b3, bu
2.Surface hardness: hrc58-65hrc, volume hardness hrc56-63.
3.The impact toughness of our grinding balls is more than 18 j / cm2.
4.The actual broken rate <0.57%
5.Lost round rate: <1%
Forged grinding ball features and advantages:
1. Surface hardness of up to 60hrc
2. High volume hardness as large as 55hrc to 60hrc, uniform hardness distribution
3. High impact toughness of greater than 12j/cm²
4. Low breakage rate, peel fragmentation resistance property of over 20000 times
5. Actual breakage rate not greater than 1% and close to 0
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.
Material introduction by q.R. Miniature steel ball :
Chemical component of aisi440c (sus440c)
Aisi(sus)440c
C 0.95-1.20
Si 1.00max
Mn 1.00max
P 0.04max
S 0.02max
Cr 16.00-18.00
Mo 0.40-0.80
Application area of sus440c (aisi440c) steel balls by q.R. Miniature steel ball:
Aisi 440c balls are a martenistic-type stainless steel, which is used extensively in bearing applications that require corrosion-resisting properties.440c balls are resistant to corrosion from fresh water, steam, crude oil, gasoline, perspiration, alcohol, blood and foodstuffs. Maximum resistance to corrosion and tarnishing is only achieved when 440c is fully hardened and surfaces are polished to a high luster.Hrt provides 440c balls in vacuum melt condition upon request.
Feature of sus440c (aisi440c/ 440) steel ball by q.R. Miniature steel ball:
1.Made of material in aisi(sus) 440/440c.
2.Size: 2.0mm-25.4mm.
3.Grade: g10, g25, g100, g500.
4.Hardness: hrc58-65.
5.Grade standard comply with afmba.10 or din 5401.
6.Certificate: iso-9001, iso-14001, ts-16949.
7.Application: it's suitable for special environment and machine as like hydraulic parts, grinding machine and so on, it has better rust resistence and hardness than aisi420.
Sizes are available in millimeters, inches and fractions.
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(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 standardYb/t091-2005
2) size: 25-150 mm
3) surface hardnessHrc57-67 hrc
4) volume hardnessHrc56-64
5) breakage rate<0.57%
6) lost round rate<1%
7) impact toughness12 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)
(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
Our product has precise size, high hardness, high roundness and mechanical properties. It won't deform and crack during its service life. The surface hardness of our product can reach up to 57HRC to 67HRC, and volume hardness can reach up to 56HRC to 64HRC, the difference between the hardness of surface and center are no more than 2HRC. Besides, the impact toughness of our product is greater than 12J/cm2. Further more, the breakage rate of our product is no more than 1% and are close to 0. Our product are widely used in processing facilities such as the iron&steel plant, mineral processing plant, refractory material plant and phosphate fertilizer plant, etc. Above all, all of our products can be customized according to customers’ requirements.
Stainless steel ball aisi 440c
Material:;aisi 440c stainless steel
Size: 0.5mm-50.8mm
Grade: g5-g1000
Hardness:hrc58-65.
Certificate:iso9001, ts16949, iso14001
Feature: good wear-resisting property and corrosion resistance, with higher rust resistance and hardness than aisi420.
Application: bearing which require corrosion resistance, such as hydraulic parts, grinding machines, petrochemical industry, and etc.
Welcome to oriental casting and forging(shandong) co., ltd. I, mr. Wang is glad to serve you
Description:
, good wear resistance, no breakage, even wearing.
3. Applied field: mines, cement plants, power stations, chemical industries etc.
4. Stable supply and sales year-round make us can be your good supplier.
Product description:
Specifications:
Forged steel grinding balls
Size: 20mm-150mm
Brand material impact test endurance test surface core
Dt-2 60mn 13min 10000min 58 50
Dt-3 65mn 15min 12000min 60 50
Dt-4 b2 17min 12000min 60 52
Brand material c mn si cr s p
Dt-2 60mn 0.57-0.65 0.7-1.0 0.17-0.37 0.25 0.035max 0.035max
Dt-3 65mn 0.62-0.70 0.9-1.0 0.17-0.37 0.25 0.035max 0.035max
Dt-4 b2 0.70-0.85 0.7-0.8 0.17-0.37 0.2-0.7 0.035max 0.035max
If you are interested in my product, please send me your detailed information such as your drawing or detailed specifications, chemical composition requirement etc. And you will get our quickly reply
Welcome to oriental casting and forging(shandong) co., ltd. I, mr. Wang is glad to serve you
Description:
As one of the biggest manufacturers and exporters of grinding balls in china, we can produce several kinds of grinding stem
And iso14001 international environment certification system.
2. Good quality: high hardness, good wear resistance, no breakage, even wearing.
3. Applied field: mines, cement plants, power stations, chemical industries etc.
4. Stable supply and sales year-round make us can be your good supplier.
Product description:
Specifications:
Forged steel grinding balls
Size: 20mm-150mm
Brand material impact test endurance test surface core
Dt-2 60mn 13min 10000min 58 50
Dt-3 65mn 15min 12000min 60 50
Dt-4 b2 17min 12000min 60 52
Brand material c mn si cr s p
Dt-2 60mn 0.57-0.65 0.7-1.0 0.17-0.37 0.25 0.035max 0.035max
Dt-3 65mn 0.62-0.70 0.9-1.0 0.17-0.37 0.25 0.035max 0.035max
Dt-4 b2 0.70-0.85 0.7-0.8 0.17-0.37 0.2-0.7 0.035max 0.035max
If you are interested in my product, please send me your detailed information such as your drawing or detailed specifications, chemical composition requirement etc. And you will get our quickly reply
Grade: g5----g1000
Package: pp bag + carton/wooden case/pallet
Delivery time: 7-10 days after order
Production capacity: 10000ton/month
Place of original: shandong china
Market: usa , italy, germany, canada, united kingdom, japan and south korea etc
Stainless steel ball commonly used in more sophisticated products, precision bearings, meadical dental drill bearing, caster, bearing, valves, decorations...Strong and durable.
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
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
Steel drum or container bags
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