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
Introduction
Casting steel ball diameter from 20-150mm with high hardness, low wear,
Low broken rate, strong heat resistant and corrosion resistance, chromium content
From 1%-28%, hrc45-63, .Detailed specifications can be customized according
To customer demand. It is particularly used in cement industry working in the grinder with high temperature, high crushing and strong abrasion .
The grinding ball with chromium content 1% - 3% and hardness hrc =45 called
Low chromium alloy cast ball. Low chromium ball is produced by the intermediate frequency electric furnace smelting, metal mold or sand casting .
Features
Good toughness, low abrasion rate, low broken rate , low chromium ball hardness can reach 45-55hrc
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 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.
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
1. Company name: shandong huamin steel ball joint-stock co., ltd.
2. Year of established: 1986
3. Productforged steel ball, rolling forged steel balls, grinding steel balls used in the ball mill and sag
4. Diameter: 20mm to 160mm(1)
5. Material: c: 0.47-1.05 si:0.17-0.37 mn:0.5-1.0 s:0.035max p:0.035max cr:1.2max mo: 0.15max
6. Production technology: huamin mainly have three kind of production technology for forged steel balls.
1) air hammer forged steel balls
2) rolling-forged automatic production line designed by our ourselves, this production line is controlled by automatic equipment, so the hardness is high and toughness is good.
3) rotary-cut automatic production line, this production line gets five national patent. Currently, we mainly use this production line to produce forged steel balls, so the product quality is quite steady and good.
7. Inspection
Huamin have a full set of inspection equipment.We can test hardness, hadness distribution, chemical composition, impact value, micro-structure, dropping test and so on.
8. Packing
Huamin have two kinds of packing method: steel drums or container bags, this two kind of packing can both meet the requirement of repeated shipping and storage, customers can choose any one.
Products detail:
Size: dia20mm to dia150mm
Production capacity: 100ú¼000ton/year
Characteristics: high hardness, good wear resistance, no breakage, even wearing.
Applied field: mines, cement plants, power station, chemical industries etc.
Packing: by steel drum or big bag.
