20mm medium chrome cast grinding balls for ball mill

Price: 1100.0~1700.0 USD
Trade Term: FOB
Payment Terms: T/T,L/C
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Basic Info.
  • Brand Name: DONGXU 
  • Material: steel scrap 
  • Usage: grinding media 
  • function: grinding media 
  • production process: cast 
  • metallurgical structure: P+C 
  • chromium percentage: 4.9-9.0% 
  • material: steel scrap 
  • size: dia 20mm 
  • place of origin: China Ningguo 
  • falling times: 9000 
  • Place of Origin: Anhui  
  • Min.Order: 18 Metric Ton
  • Means of Transport: Ocean
Supply Capacity
  • Production Capacity: 50000 tons per year
  • Packing:bulk bag/metal pail
  • Delivery Date: 1 month

Description of the 20mm medium chrome cast grinding balls for ball mill



1.Mechanical properties and metallurgical structure


Impact Value(j/cm²)

metallurgical structure

Falling Times






2.Chemical components as follow














3.Picture of the dia 20mm medium chromium alloy steel ball for fine grinding


4.Holding furnace thermostatic pouring


5.Heat treatment tempered furnace


6.Japanese clients visiting Dongfang


7.Heat treatment

     Heat treatment is the key step of the whole  production process.In the R&D practice,Dongfang invents 

  Application Method for Warm Period Timing Quenching in Grinding Materials Heat Treatment and other skills.

  Machine oil is used to quench,making workpiece heated evenly,promoting the first formed carbide decompose

  once again and then forming uniformly distributed reticular carbides in the matrix.

    Due to the unique heat treatment process, grinding medias obtain the required hardness and metallurgical 

  structure,and the hardness difference from surface to core is less than 1.5 HRC.




We usually choose to pack your order by bulk bag or metal pail, about 1ton per unit.



  1.Usually we ship your order by sea.

  2.We'll tell you the shipping status once your order has been sent.


   30% advanced payment, 70% before loading. We accept T/T, L/C.etc.



Send message to this supplier
Mr. Jeff Xiao
Tel: 86-563-4184886
Mobile: 18956398241
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Contact Method
Ningguo Dongfang Wear-Resistant Material Co.,Ltd
47 West Ningyang Road Ningguo, Xuancheng, Anhui, China (Mainland)
Fax: 86-563-4182677
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