High Chromium Casting Steel Cylpebs

✨ Core Advantages

✓ Optimal Chemical Stability: Advanced EAF smelting guarantees precise chromium content (up to 30%) across ZOCr2 to ZOCr26 grades.
✓ Balanced Surface & Core Hardness: Automated mold casting & dual heat treatments ensure an incredibly balanced hardness of 46 - 58+ HRC.
✓ High Fatigue Resistance: Rigorous 5-dimensional QC guarantees a falling fatigue life of ≥ 10,000 to ≥ 22,000 times with near-zero breakage.
✓ Superior Line-Contact Milling: Unique cylindrical shape increases contact surface area per unit volume, boosting fine-grinding efficiency.

🎯 Highly recommended for the fine-grinding chambers of Cement Mills, Silica Sand processing, and Metal Concentrators to drastically lower power consumption.

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Description

Product Overview

Our wear-resistant casting steel cylpebs (grinding cylpebs) are strictly manufactured via advanced electric furnace smelting and precisely monitored thermal treatments. Designed with a unique cylindrical line-contact geometry, these cylpebs offer a larger surface area per unit volume than balls, ensuring higher grinding efficiency, precise particle size distribution, and significantly reduced milling costs.

Advanced Manufacturing Process

✓ Precise Melt Control
Electric-furnace smelting paired with real-time spectrum analysis ensures the precise chemical composition of chromium (up to 30%).

✓ Double-Gate Inspection
Features a strict self-inspection and professional recheck system. Any non-qualified semi-finished products are 100% rejected and remelted.

✓ Multi-Dimensional QC Testing
Every batch undergoes 5 rigorous final tests: Hardness, Falling Sphere, Impact, and Metallography, ensuring ≥ 22,000 times fatigue life.

Chemical Composition (%)

Grade	C	Si	Mn	Cr	Mo	Cu	Ni	P	S
ZOCr26	2.0-3.3	≤1.2	0.3-1.5	23.0-30.0	0-3.0	0-1.2	0-1.5	≤0.10	≤0.06
ZOCr20	2.0-3.3	≤1.2	0.3-1.5	18.0-23.0	0-3.0	0-1.2	0-1.5	≤0.10	≤0.06
ZOCr15	2.0-3.3	≤1.0	0.3-1.5	14.0-18.0	0-3.0	0-1.2	0-1.5	≤0.10	≤0.06
ZOCr12	2.0-3.3	≤1.2	0.3-1.5	10.0-14.0	0-3.0	0-1.2	0-1.5	≤0.10	≤0.06
ZOCr8	2.1-3.3	≤1.2	0.3-1.5	6.0-10.0	0-1.0	0-0.8	–	≤0.10	≤0.06
ZOCr5	2.1-3.3	≤2.2	0.3-1.5	3.0-6.0	0-1.0	0-0.8	–	≤0.10	≤0.10
zOCr2	2.1-3.5	≤1.5	0.3-1.5	1.0-3.0	0-1.0	0-0.8	–	≤0.10	≤0.10

Mechanical Properties & Microstructure

Grade	Surface Hardness (HRC)	Core Hardness (HRC)	Microstructure	Falling Fatigue Life (Times)	Impact Toughness (J/cm²)
ZOCr26	> 58	> 56	M+C	≥ 22000	≥ 6
ZOCr20	> 58	> 56	M+C	≥ 22000	≥ 6
ZOCr15	> 58	> 56	M+C	≥ 22000	≥ 6
ZOCr12	> 58	> 56	M+C	≥ 20000	≥ 6
ZOCr8	> 50	> 48	P+C	≥ 15000	≥ 6
ZOCr5	> 48	> 46	P+C	≥ 12000	≥ 6
zOCr2	> 46	> 45	P+C	≥ 10000	≥ 6

💡 Application Note: Our casting steel cylpebs provide a distinct line-contact grinding mechanism instead of point-contact. They are highly recommended for the fine-grinding stages in cement mill chambers, silica sand processing, and metal mining concentrating mills to optimize grinding fineness and save energy.

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