High Chrome Cast Iron Grinding Balls for Ball Mill

• Customization: Available
• Material: Iron
• Content: 100%
• Model NO.: high/Medium/Low chrome
• Processing Type: Forging and Casting
• Size: 20-150mm
• Color: Metallochrome
• Customized: Customized
• Raw Material Heating: by Electric Furance
• Certification: ISO9001:2008
• Transport Package: Container Bag, Steel Drum
• Trademark: Jinan zhongwei
• Origin: Shandong Jinan
• Production Capacity: 1000000

Product Description

High chrome cast iron grinding balls for ball mill

Type and chemical composition of forged grinding balls


Material
Chemical elements
Hardness

Name	Material	Chemical elements						Hardness
		C	Si	Mn	S	P	Cr	HRC
Cast iron ball	Special cr1	2.0-3.0	<1.0	0.5-2.0	≤0.06	≤0.06	>20	58-64
	Special cr2	2.0-3.0	<1.0	0.5-2.0	≤0.06	≤0.06	>15	58-64
	High Cr	2.0-3.2	<1.0	0.5-2.5	≤0.06	≤0.06	>10	58-62
	Medium Cr	2.0-3.2	<1.0	0.5-2.5	≤0.06	≤0.06	≥5	48-55
	Low Cr	2.2-3.4	≤1.2	0.5-1.5	≤0.06	≤0.06	1.0-1.5	42-46

 

Material	25mm-50mm HRC		60mm-70mm HRC		80mm-90mm HRC
	Surface	Core	Surface	Core	Surface	Core
Special Cr1:>20	60-64	59-63	60-64	58-62	60-64	57-61
Special Cr2:>15	58-62	57-61	58-62	56-60	58-62	50-59
High Cr:>10	58-62	57-61	58-62	56-60	58-62	50-59
Medium Cr:≥5	45-48	44-47	45-48	43-46	45-48	42-45
Low Cr:1-1.5	42-46	41-45	42-46	40-44	42-46	39-43

Production Line
Raw material chemical composition and optional proportion-- Melting and pouring-- Oil quenching-- Temper-- Polishing

Packing
1000kgs in a bag or 850-900kgs in a steel drum, then 25 tons in a 20GP Container

QC&QI

1) Raw material: Size, Chemcial elements, Microstructure quality control (LAIWU STEEL)

2) Production Technical: Cutting Size, Heating Temperature, Quenching Technical, Tempering control.

3) Grinding Balls: Hardness, Size, Chemcial elements, Breakage Rate Checking

4) Thrid-Pary: SGS, BV ISO, TUV, COTECNA, AsiaInspection etc.

Company Profile
Jinan Zhongwei established in 2000 , we are a leading manufacturer and professional exporter grinding balls in China.
Our company covers an area of 15000 square meters, now we have 150 staff, including 13 technical staff. Annual output is 50000 tons to 80000 tons .
Main products : forged steel ball, cast iron ball ,grinding rod, cylpebs
We have exported to 20 more countries, UAE, Zambia,South Africa, Peru, Chile, Australia, UK, USA, Turkey and so on.