Casting iron balls include high chromium balls, medium chromium balls and low chromium balls.
Quality index of high chromium casting ball:
The chromium content of the high chromium ball is 10.0% or more. The carbon content is between 1.80% and 3.20%. According to national standards, the hardness of the high chromium ball must be no less than 58hrc, and the impact value should be greater than or equal to 3.0j/cm2. To achieve this hardness, the high chromium ball must be quenched and tempered at high temperature. At present, there are two methods for quenching high chromium balls in China, including oil quenching and wind quenching. If the test hardness of the high chromium ball is lower than 54HRC, it means that it has not been quenched.
Quality index of medium chromium casting ball
The specified chromium content of the medium chromium ball ranges from 3.0% to 7.0%, and the carbon content is between 1.80% and 3.20%. Its impact value should not be less than 2.0j/cm2. According to national standards, the hardness of the chrome ball should be greater than or equal to 47hrc. In order to ensure quality, medium chromium balls should be tempered at high temperature to eliminate casting stress.
If the surface of the iron ball is black and red, it proves that the iron ball has been tempered at high temperature. If the surface of the iron ball still has the metal color, we can judge that the iron ball has not undergone high temperature tempering treatment.
Quality index of low chromium casting ball
Generally speaking, the chromium content of the low chromium ball is 0.5% to 2.5%, and the carbon content is from 1.80% to 3.20%. Therefore, according to the national standard, the hardness of the low chromium ball should be no less than 45hrc, and the impact value should be no less than 1.5j/cm2. Low chromium balls also need high temperature tempering treatment to ensure quality. This treatment can eliminate casting stress. If the surface of the iron ball is dark red, it indicates that it has undergone high temperature tempering treatment. If the surface is still metallic color, it means that the iron ball has not been tempered at high temperature.
Casting iron balls are usually used in various large-scale mines, cement plants, chemical plants, power plants, quartz sand plants, silica sand plants, etc.
Place of origin hebei, china (mainland)
Brand name goldpro
Model number gn-2
Application powder station, cement, mining..
Material steel
Dimensions 130mm
Density 7.80-7.85g/cm3
Impact to broken (times) 20, 000
Izod impact strength 12-35j/cm2
Hardness surface58-61hrc , core 56-63hrc
Breakage rate real 0.3%
Material b2/b4/b6/bu/65mn/60mn meet client's specical needs
Standard yb/t091-2005
Packing weave bag 1000kg/bag*steel drum/850kg/drum
Productive technology forging /hot-rolling
Certification iso 9001-2008 ;iso14001:2004;gb/t28001-2001
1, container bag:gw 1000kg (1.5 kg/per bag)
2, iron drum:
Gw 1000kg to 20mm-40mm,
Gw 960kgs to 40mm-60mm,
Gw 930kgs to 60mm-80mm,
Gw 900kgs to 80mm-100mm,
Gw 850kgs to 100mm-150mm,
(18kgs/per drug)
Forged Steel Grinding Media Balls 80mm for Ball Mill
Diameter: 80mm
Hardness:HRC60-65
Available Quantity: 200 tons
Packages: steel drums or big bags
Applied Fields: wet grinding of copper, gold,uranium ore, clinker, limestone, coal and other materials etc
3 Inch 80mm Steel Grinding Media Balls for Mine Ore
Who We Are?
1. One +30-year-old Grinding Media Steel Balls and Rods for mining Manufacturer and Supplier.
2. Full Range of Grinding media steel balls,rods,cylpebs
3. Global Top 500 clients:
Forged Grinding Steel Ball for Ball Mill in Mining - 40mm
4. The production lines for grinding steel balls are made and designed by our expertise. And it is the first one production line for grinding rods in China in 2009.
For the large quantity required from customers, we can intall another new production lines of grinding balls and expand our production to meet the customers' requirements.
5. We can offer the 24hours online service for any questions or requests.
Chromium casting grinding ball
m 7%-10%
Size(|¦ì):10-130mm
Hrcy47
Industry fields:mining/coal grinding/other wet applications
3.High chromium 10%-14%
Size(|¦ì):10mm-130mm
Hrcy58
Industry fields: cement-dry grinding/mining/coal grinding/power stations/chemical industries/other wet applications
4.Special high chromium ¡y14%
Size(|¦ì):10-130mm
Hrcy60
Industry fields: cement-dry grinding/metallurgic mine/power stations/chemical industries or other wear big business
Features and Advantages of Forged Steel grinding media Ball :
Concentrating on wear-resistant grinding material for 30 years, Huamin Brand steel grinding media ball is excellent in surface quality, hardness, and resistant to impact and abrasion. It won't crack and lose circularity easily.
1) High Hardness: Huamin forged grinding media steel ball has high hardness: surface hardness can reach to 55-67 HRC, volume hardness 56-64 HRC
2) High Impact Toughness: impact toughness is more than 12 J / cm2.
3) Low Broken Rate: peel fragmentation resistance property of over 20000 times. The actual breakage rate is less than 1% and close to 0.
Raw Material of grinding media balls
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.
Forged Steel media Ball Products Show:
Our products range from 20mm to 150mm, 1 inch to 6 inch, and we can also offer all size of products according to clients' demand.
The Production Line And Equipment:
The self-developed automatic steel grinding ball production line is our qualified product, and it has won Chinese invention patent. It uses electric furnace instead of conventional coal combustion method,and the rotary cutting technique replaces traditional air hammer,
thereby improving production efficiency by 30 times
Yama Group is a manufacturer of grinding media balls for ball mills grinding. Our high-capacity manufacturing facility can meet your production requirement all-year-around.
Grinding Media Balls are used in ball mill grinding and milling to grind and crush various materials. Yama supplies a wide variety of grinding media and milling media with applications in:
- Planetary milling jars and planetary mill machines
- Tower mills and rotary mills
- Isa mills and semi-autogenous grinding
Our grinding media is utilized in many industries like:
- Cement manufacturing plants
- Mineral & ore processing plants
- Power plants
- Mines & excavation projects
- Other engineering applications
Our products are globally accepted in North America, South America, Europe, UK, Gulf countries & Middle East, South Asia, Africa, Australia matching and exceeding the international quality standards. Moreover, we are deeply committed to quality and customer satisfaction on top of our whopping production capacity and on-time product delivery.
We are interested in building lasting business relationship with you, meeting your demands, and supplying you quality engineering products at globally competitive prices. We are confident that our highly competitive prices will exceed your expectations.
Upon your request, we may send you our product brochure and price quote for specific requirement, quantity, port of destination and FOB/CFR/CIF inco-terms.
We eagerly await your reply and look forward to working with you.
Thank you & sincerely,
Maulin Raval
Global Sales Manager
Yama Impex
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