Casting Balls & Grinding Balls

September 21, 2017 By Coffy

Grinding Rods

Grinding Rods Characteristic: belonging to alloy wear resistant steel rod, wear-resistant effect of this wear-resistant steel rods is 4, 6 times of rolling steel rod, size can be adjusted according to customer needs.

Grinding Rods Features and Advantages:
Materials: can be customized according to customer’s requirements
Application: mainly used for metallurgical and mining, cement plant, thermal power, chemical industry, etc.
Characteristics of grinding rods as follows:
High hardness, range is 45~55HRC
Low bending, less than 1.5mm/m
Dense microstructure, Bainite +Pearlite+Carbide
Low breakage rate, more than 15000 times/ 3.5m
Low unit consumption, 40% reduction compared to unprocessed round steel

Main Performance: Main Performance of Grinding Rods

September 21, 2017 By Coffy

High chrome grinding balls

High chrome grinding balls’ Diameter, Chemical Composition, Properties and Microstructure:

September 21, 2017 By Coffy

Medium chrome grinding balls

Medium chrome grinding balls’ Diameter, Chemical Composition, Properties and Microstructure:

September 21, 2017 By Coffy

Low chrome grinding balls

Low chrome grinding balls’ Diameter (mm), Chemical composition, Properties and Microstructure:

September 21, 2017 By Coffy

Casting Balls

Product Quality Standard：
1. The chemical composition of the high chromium type product should conform to the below table. We can also offer the products with special chemical composition in accordance with the requirements of the customers.
Chemical Composition (Mass Fraction)
2. The nominal diameter, allowable deviation, maximum diameter, minimum diameter of the cast grinding steel ball should be in accordance with the following table. Norminal Diameter
3. The high chromium type of product can be manufactured with the mechanical properties following the requirements of customers.
4. Surface Quality & Internal Quality
4.1. The surface of the cast iron grinding ball is not allowed to have the casting defects such as the crack, and the obvious gas porosity, inclusion, shrinking cavity, cold shut, elephant skin, etc.
4.2. Internal Quality
It is not allowed to have the shrinkage cavity, shrinking porosity, gas porosity, inclusion, and other cavity defects on the section including plane pasting through the pouring gate and the ball center.

5. Testing Method and Inspection Rules. Casting Balls
5.1. Impact Test
5.2. Rockwell Hardness Test Specimen Preparation
5.3. Chemical Composition Inspection
5.4. Surface Hardness Inspection
5.5. Internal Quality Inspection

Let us know your detail demands and inquiry now.

September 21, 2017 By Coffy

Forged Grinding Balls for cement industry

Forged grinding balls commonly used low-carbon alloy, high manganese steel, high carbon and high
manganese alloy steel. On the basis of these material we have developed a series of competitive and efficient patent forged grinding balls.

Forged grinding balls
The products range from 20mm to 150mm, 1 inch to 6 inch, and we can also offer all size of products according to customers’ demands.

1. Features:
1) forged grinding ball has high hardness: surface hardness to 58-65HRC, volume hardness of 57-64HRC
2) impact toughness high: impact toughness more than 12J / cm².
3) broken rate is low: the actual broken rate is not higher than 0.5%.
4) loss of forged grinding ball round rate is low.
5) dropping test in 8m high tester for more than 20,000 times.

2. Technical Parameters:
Nominal Diameter(mm): Φ20，Φ25，Φ30，Φ35，Φ40，Φ50，Φ60，Φ70，Φ75，Φ80，Φ90，Φ100，Φ120，Φ125，Φ130，Φ150.

3. Inspection Process
1) Surface quality inspection, 2) Dimensional inspection, 3) Low magnification analysis, 4) Dye-penetrant inspection, 5) Metallographic test

4. Technical Process of Forged Steel Ball
1) Raw material testing, 2) Mixture, 3) Heating, 4) Forged hot rolled, 5) Heat treatment, 6) Testing, 7) Storage & package.