60 70 80 90mm 12%14%Cr High Chrome Steel Cast Grinding Balls

• Customization: Available
• Material: Chrome Steel
• Content: 0.8%-28%
• Model NO.: ZQCR12
• Usage: Construction, Machinery, Chemical, Petroleum, Grind, Refractory Material, Grinding Mill , Cement ,Mining Processing
• Processing Type: Casting
• Size: 20 30 40 50 60 70 80 90 100mm
• Color: Black
• Customized: Customized
• Heat Treatment: Oil Quenching
• Broken Rate: <0.5%
• Hardness: 58-62HRC
• Diameter: 20 30 40 50 60 70 80 90 100mm
• Advantage: Good Wear Resistance High Hardness
• Tempering: 350-600 Degree
• Application: Ball Mill, Cement, Coal Power Plant
• Chrome Content: High Chrome Grinding Ball
• Transport Package: Durm or Bag
• Specification: 60mm 70mm 80mm 90 100mm
• Trademark: chengda
• Origin: China
• HS Code: 7325910000
• Production Capacity: 60000 Tons
• Package Size: 50.00cm * 60.00cm * 100.00cm
• Package Gross Weight: 950.000kg

Product Description

Product Description

 60 70 80 90mm 12-26%Cr Chromr steel Cast Grinding Ball

 Optimize Your Mining Pulverization with 12% Cr 80mm High Grinding Ball
Achieve superior efficiency and cost savings in your mineral processing operations with our precision-engineered 11% Chromium 80mm High Grinding Ball.

Designed specifically to endure the demanding environment of mining pulverization, these robust  high grinding balls deliver exceptional performance where it matters most.

Manufactured using premium medium-chromium alloy steel and advanced heat treatment, our high cast grinding ball solution offers the perfect balance of hardness and toughness for optimized size reduction.

Optimizing mineral processing, 90mm diameter 12% chromium steel grinding ball are engineered for demanding mining ball mills. Their superior hardness and impact toughness provide exceptional wear resistance during the intense ore grinding process. These forged grinding balls minimize consumption and operational downtime, significantly enhancing grinding ball mining efficiency and cost-effectiveness. Utilizing 12%Cr alloy ensures reliable performance and extended service life in abrasive mining environments, making them a core component for productive grinding ball mining operations.

Mechanical Properties and Microstructure

Item	Hardness (HRC)	Impact(J/CM2)	Microstructure	Falling Times
ZQCr28	≥58	≥4.8	M+C	≥18000
ZQCr26	≥58	≥4.8	M+C	≥18000
ZQCr20	≥60	≥4.8	M+C	≥18000
ZQCr15	≥60	≥4.8	M+C	≥18000
ZQCr12	≥60	≥4.5	M+C	≥18000
ZQCr8	50-65	≥3.5	M+C / P+C	≥12000
ZQCr5	49-62	≥3.0	M+C / P+C	≥12000
ZQCr2	≥48	≥3.0	P+C	≥10000
CADI	55-60	≥10	B+FE	≥25000
C- Carbode     M-Martensite    P-Pearlite  B-Bainite  Fe-Ferrite

Application & Feature

Key Advantages for Optimizing Mining Pulverization:
Enhanced Wear Resistance The 12% Cr composition provides outstanding abrasion resistance against hard ores, significantly extending service life and reducing the frequency of  high grinding ball  replenishment.

Improved Grinding Efficiency:The engineered metallurgy of the grinding ball ensures effective impact energy transfer, maximizing the fracturing of ore particles for finer grind sizes and increased mineral liberation

Optimized Particle Size Distribution:  The consistent grinding ball 80mm size and spherical integrity ensure uniform grinding action, leading to more predictable and efficient pulverization for improved downstream processing.

Key advantage of high chrome steel grinding balls

Reduced Media Consumption & Downtime: High grinding balls Superior hardness (typically HRC 58-62) combined with excellent toughness minimizes ball breakage and deformation, lowering overall media costs and unplanned maintenance stops.
Increased Mill Throughput & Efficiency:  Reduced ball wear maintains optimal mill charge volume and density, translating into higher processing capacity and better energy utilization per ton of ore ground.
Improved Grinding Efficiency:The engineered metallurgy ensures effective impact energy transfer, maximizing the fracturing of ore particles for finer grind sizes and increased mineral liberation.

Quality Testing

Strict testing for the high grinding ball

We have industry-leading full-process inspection and testing center.

Every batch of our hi chrome grinding balls undergoes stringent quality control to guarantee reliability:

Carbon and sulfur analyzer

Metallography Testing

Microscopic examination of the ball's microstructure confirms correct heat treatment, carbide distribution, and the absence of detrimental defects like porosity or inclusions, guaranteeing consistent performance.

Spectrum Analyzer

Durometer

CNC EDM CUTTING MACHINE

Grinding Ball Impact Testing machine

Grinding Ball Surface and core hardness are meticulously measured using Rockwell C scale to ensure uniform hardness distribution critical for wear life

Evaluates the material's ability to absorb sudden impact energy without fracturing, a key indicator of in-service durability.

Specification

Grinding Ball Chemical Compositon

Mode	C	Si	Mn	Cr	Mo	Cu	Ni	P	S
ZQCr26	2.0 -2.6	≤1.0	0.3-1.5	23.0-27.0	≤1.0	≤1.0	≤1.0	≤0.6	≤0.6
ZQCr20	2.0 -2.6	≤1.0	0.3-1.5	18.0-23.0	≤1.0	≤1.0	≤1.0	≤0.6	≤0.6
ZQCr15	2.0 -2.6	≤1.0	0.3-1.5	14.0-18.0	≤1.0	≤1.0	≤1.0	≤0.6	≤0.6
ZQCr12	2.2-3.0	≤1.0	0.3-1.5	10.0-14.0	≤1.0	≤1.0	≤1.0	≤0.6	≤0.6
ZQCr8	2.2-3.0	≤1.0	0.3-1.5	7.0-10.0	≤1.0	≤0.8	≤1.0	≤0.6	≤0.6
ZQCr5	2.2-3.2	≤1.0	0.3-1.5	4.0-6.0	≤1.0	≤0.8	≤1.0	≤0.8	≤0.8
ZQCr2	2.2-3.2	≤1.0	0.3-1.5	1.0-3.0	≤1.0	≤0.8	≤1.0	≤0.1	≤0.1
ZQCADI	3.3-3.9	2.4-3.0	1.4-1.9	0.2-0.5	≤0.5	0.1-0.5	0.1-0.5	≤0.05	≤0.05

Grinding ball Normal Size

Size(diameter:mm)

4.6mm 5mm 10mm 15mm 17mm 20mm 25mm 30mm 40mm 50mm 60mm 70mm 80mm 90mm 100mm 110mm 120mm 125mm 130mm

Company Profile

Our factory is founded in 2004,one of the leading manufacturer of grinding media such as various of chromium alloy grinding balls, steel gorging,hammer,linning plate etc,annual production capacity over 100000 tons.

Workshop

high grinding ball workshop

Packaging & Shipping

packed by plastic bags

packaging by bucket 

the high grinding balls could be packed by plastic bags or bucket