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20mm-130mm Grinding Media Ball (HRC55-HRC59)
Grinding media ball
According to the national standard GB8649-88 & forging (rolling) ball ferrous metallurgy industry standards (YB/T 091-2005), our plant specializes in producing forged/casted grinding media ball diameter from Φ20- Φ130mm.
The advance manufacturing methods and materials guarantee the maintenance of the geometrical tolerance and correct structures vital to reliable, consistent performance and long life.Therefore, our grinding balls are of rounded geometry, high hardness and good mechanical properties and resistant to wear, no distortion, no cracking of excellent quality.
| Specification: |
| 1).No deformation |
| 2).High hardness Good wear resistant |
| 3).Size:Dia20mm-130mm |
| 4).Breakage<1% |
| 5).Certification:ISO9001,SGS. |
Application:
Our products are all kinds of ferrous and nonferrous metals mine concentrator, power plants, cement plants, refractory plants and other industries has been widely used by domestic and international customers alike.
| nternal quality |
| It is not allowed that crack, obvious porosity, slag inclusion, shrinkage, cold insulation, wrinkled skin and other casting defects exist on the section which goes through center of gate and sphere. |
| Test Method and Rules |
| 1.Impact test: Cutting 10mm×10mm×55mm part through gate in ball as sample |
| 2.Rockwell hardness specimen preparation: The surface of the ball takes the test after grinding to platform, and the grinded thickness is 1.5 - 5mm. |
| 3.Chemical composition test: When the volume smelting furnace more than 0.5 tons,we should check the chemical composition furnace by furnace; When the volume smelting furnace not more than 0.5 tons, we should check the chemical composition once per shift. Once there is one furnace unqualified, we need to sample double furnace for test. If there is still one not qualified, this branch of balls is unqualified. |
| 4.Surface hardness test: Sampling from different location of each batch of heating furnace, the number of the ball≥ 5.Once there is one unqualified, we need to sample double balls for test.If there is still a ball not qualified, this branch of balls is unqualified. |
| 5.Internal quality detection: We sample 1 largest size casting iron grinding ball in 100 tons the same type cast iron grinding ball of each continuous production. Once there is one unqualified, we need to sample double balls for test. If there is still a ball not qualified, this branch of balls is unqualified. |
FAQ
What's your MOQ?
Our company MOQ is 500kg.
How can I place an order?
You can email us about your requirement.
Any inquiry will be replied in 24hours.
Could you accept OEM and customize?
YES, we can customize for you according to your samples or drawing.
Could you supply samples for free?
Yes, we san supply samples for free if customer afford the freight.
Does your factory have SGS?
Yes, we have SGS and ISO.
Are you factory or manufacturer?
Yes, our factory was built in 1993.
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