Chengde Rongmao Cast Steel Co.,Ltd. founded in 1980s, and located in historic and cultural city - Chengde China, is a large-scale casting & forging enterprise. For thirty years Rong Mao has produced Austempered Ductile Iron (ADI) grinding ball, Forged grinding balls, ball mill liner, various models of jaw crusher tooth plate, hammer crusher liner, castor-oil plant section, high-chromium alloy combined hammer and all kinds of high manganese steel castings. The company has 400 staff, including technical management personnel of 80 and 30 with senior and medium professional titles, and its plant covers an area of 36,000 square meters, with workshop area of 26,000 square meters and fixed assets of 200 million yuan. The annual output is 100,000 tons.
ADI Grinding Ball
According to the present situation of 9.75 4.88m SAG mill, since the grid plate hole is 60mm, so we suggest your company using 125 balls instead of original 120 ones, changing filling rate from 9-10% to 11-12%, so that it will be more effectively to increase the grinding quality and processing ore quantity. We are leading manufacturer and supplier of ADI grinding ball, austempered ductile iron grinding ball in China.
Forged Grinding Ball
According to the present situation of 9.75 4.88m SAG mill, grid plate hole 60mm, and we recommended your company changed ball diameter from the original 120 to 125, filling rate from 9-10% to 11-12%, so that it is more effectively to increase the grinding quality and processing ore.
Base on the high quality raw material, the advanced automated equipment, the heat processing and the strict quality control system, we can improve the surface hardness of grinding ball up to 58-65HRC and impact toughness of grinding balls is over 12J/cm,�.
Features of forged grinding ball
1) High hardness: surface hardness of forged grinding balls is to HRC 58-65. The tolerance of the core hardness and surface hardness is not over 2HRC;
2) Good Impact Toughness: impact toughness of forged grinding balls is over 12J/cm,�;
3) Low Broken Rate: the actual broken rate is not higher than 1%.
Introduction:
The grinding ball with chromium content 10%-14%, hrc 58 is popular on current market and also very economic .
Chromium content 47, hrc 58 , this kind ball is called special high chromium steel ball
High chrome grinding ball issuitable for the industry with high requirement on grinding fine, and high abrasion .
High chrome grinding ball can increase production, and reduce consumption obviously in the cement industry.
Features:
Good toughness, low abrasion, low broken rate of low chromium alloy casting; low chromium ball hardness can reach 50-62hrc
Introduction:
The grinding ball with 7% - 10%, usually hrc 46 called medium chromium alloy ball, hardness can reach 47-55hrc.
It is widely used in mining, cement and building materials, thermal power, metallurgy and chemical industry and area, big, small,
Mainly used in various specifications of dry wet mill, to crush the role, is an ideal wear-resistant materials.
Features:
Good toughness, low abrasion, low broken rate of chromium in chromium alloy casting;
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1. Ball mill grinding media annual output 200, 000 tons
2. Casting and forging grinding meida balls available size 25-150mm
3. The high-speed production lines are all controlled by computers, which decreases manual intervention and guarantees product quality and stability.
4. From source to finished product, we strive to manufacture high-quality and high performance grinding steel balls.
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.
Shandong iraeta has 8 leading grinding ball production lines with annual output of 200, 000 tons. We also provide efficient energy-saving and consumption-reducing solutions for the global mining giants including rio tinto and bhp billiton.
1)hardness
Surface hardness of forged ball ranges from hrc55 to hrc67.
Core hardness of forged ball ranges from hrc50 to hrc55.
Average volume hardness (avh) ranges from hrc55 to hrc63.
All requirements about hardness can be customized according to different grinding condition.
2)density
Average density is 7.85g/cm3. Consistency is higher than ordinary ones.
3)component analysis
Raw material is high carbon alloy steel, and the promotion of alloy elements is under 5%.
4)impact value
Impact toughness value is more than 12j/cm2
5)metallographic structure
Tempered martensite forms when tempered. The best microstructure is fine needle martensite.
6)breakage rate
Actual breakage rate is not greater than 0.5% and close to 0.
7)raw material
As we know, the quality of forged grinding piece depends on the material by 80%. Our products use high-quality round steel from national large-scale steel mill to insure the quality of our products.
1: diameter: 20~150mm
2: hrc: 50~65
3: material: steel
4:iso9001:2008
Detailed product description
1:unbreakable forged grinding steel ball
2: diameter: 20~150mm
3: hrc: 50~65
4: material: steel iso9001:2008
5: product performance
A) even hardness, b) unbreakable
C) grinding resistant, d) high impact value
E) high combined efficiency of grinding mill
6: application fields
A) industries of cement building material
B) metallurgical selection in mine
C) grinding coal in power plate
D) chemical machinery
1 > high hardness: surface hardness: hrc57-67 hrc, volume hardness hrc56-64.
2 > high impact toughness: the impact toughness of our grinding balls is more than 12 j / cm2.
3 > low broken rate: the actual broken rate is not higher than 1%.
4 > good wear-resistant and lower wear rate.
Grinding steel ball include: forging steel grinding balls: dia 20mm --- dia 150mm; the high, medium and low Chrome alloyed casting iron balls: dia17mm --- dia 100mm.
They mostly apply in various mines, cement plants, power stations, chemical industries etc.
The specialties: high hardness, no breakage, good wear resistance, even wearing and also it has obtained a high reputation from customers in domestic and foreign market.
Superior raw materials , advanced automated equipment, unique heat treatment technique and strict quality control system contribute to better performance for the general hardness of our grinding steel ball, with surface hardness as high as 55-65hrc, volume hardness as high as 56-64hrc, even hardness distribution, impact toughness larger than 12j/cm2, and breakage rate far lower than 0.5%.
Superior raw materials , advanced automated equipment, unique heat treatment technique and strict quality control system contribute to better performance for the general hardness of our grinding steel ball, with surface hardness as high as 55-65hrc, volume hardness as high as 56-64hrc, even hardness distribution, impact toughness larger than 12j/cm2, and breakage rate far lower than 0.5%.
Material:b2 b3 bu
Diameter:25-150mm
Technology:forged steel balls/hot rolling steel balls
Price:negotiable
Total supply:200, 000 t
Delivery date:1000 tons within 10 days
Surface hardness as high as 58-65hrc
Volume hardness as high as 56-64hrc
Impact toughness bigger than 12j/cm2
Breakage rate much lower than 0.5%
Material:b2 b3 bu
Diameter:25-150mm
Technology:forged steel balls/hot rolling steel balls
Price:negotiable
Total supply:200, 000 t
Delivery date:1000 tons within 10 days
Surface hardness as high as 58-65hrc
Volume hardness as high as 56-64hrc
Impact toughness bigger than 12j/cm2
Breakage rate much lower than 0.5%
1 > high hardness: surface hardness: hrc57-67 hrc, volume hardness hrc56-64.
2 > high impact toughness: the impact toughness of our grinding balls is more than 12 j / cm2.
3 > low broken rate: the actual broken rate is not higher than 1%.
4 > good wear-resistant and lower wear rate.
1 > high hardness: surface hardness: hrc57-67 hrc, volume hardness hrc56-64.
2 > high impact toughness: the impact toughness of our grinding balls is more than 12 j / cm2.
3 > low broken rate: the actual broken rate is not higher than 1%.
4 > good wear-resistant and lower wear rate.
This is apple from shandong iraeta, a joint venture with spain. Kindly inform you we are a professional grinding ball manufacturer.
Our company specializes in producing all kinds of grinding steel balls for minings and our products have been exported to all over the world. And we have enjoyed a high reputation both in china and other countries.
1 > high hardness: surface hardness: hrc57-67 hrc, volume hardness hrc56-64.
2 > high impact toughness: the impact toughness of our grinding balls is more than 12 j / cm2.
3 > low broken rate: the actual broken rate is not higher than 1%.
4 > good wear-resistant and lower wear rate.
Shandong delong import& export co., ltd., was established in 1995. Covering 20, 000 square meters with total fixed assets valued 10 million dollars, 240 employees, 22 senior engineers, 260 sets of steel ball manufacture machines, 40 sets of lab test equipment, zhenxing steel ball annually has a capability of 800 million pieces bearing steel ball from g10 to g1000 with a turnover of 16 million us dollars. The company has already passed iso9001:2008 and iso/ts16949 international automotive managment. The products have been exported to the uk, america, japan and many other countries.Warmly welcome customers worldwide to us for better business with our quality and service.
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