Mining High And Ultra-High Chromium Alloy Casting Balls

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Mining High And Ultra-High Chromium Alloy Casting Balls

High and ultra-high chromium alloy cast balls for mining are a high-performance wear-resistant material used in the field of ore grinding. They are mainly used in large mining ball mills, semi-autogenous mills (SAG Mills), mineral processing equipment and other working conditions. This product is made of high-quality alloy materials and manufactured through advanced casting technology, heat treatment technology and strict quality control processes. It has high hardness, high wear resistance and excellent impact resistance, and can meet the needs of long-term, high-intensity continuous grinding operations in the mining industry.

High-chromium alloy cast balls use chromium as the main alloy strengthening component. By optimizing the carbon-chromium ratio, a large number of high-hardness carbide structures are formed inside the ball to improve the wear resistance of the grinding ball surface. During the grinding process, cast balls can effectively resist the impact and wear of ore particles, reduce ball consumption and improve grinding efficiency. Ultra-high chromium alloy cast balls further increase the chromium content and alloying degree, with higher hardness, lower wear rate and longer service life. They are especially suitable for grinding environments with higher hardness ores such as iron ore, copper ore, gold ore, lead-zinc ore, and molybdenum ore.

This series of products usually adopts heat treatment processes such as quenching and tempering to achieve a uniform and stable metallographic structure of the cast balls and avoid breakage and deformation problems caused by uneven internal structures. At the same time, the product can provide different specifications, sizes and hardness levels according to customer equipment type, ore hardness, grinding process and other needs, including Ф20mm, Ф30mm, Ф40mm, Ф50mm, Ф60mm, Ф80mm, Ф100mm and other specifications.

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Chemical Composition (%)

Name Brand name C Si Mn Cr Mo P S
High and ultra-high chromium alloy casting balls AQCr–12 2.0~3.3 ≤1.2 0.3~1.5 10.0~14.0 0~3.0 ≤0.10 ≤0.06
High and ultra-high chromium alloy casting balls AQCr–15 2.0~3.3 ≤1.2 0.3~1.5 14.0~18.0 0~3.0 ≤0.10 ≤0.06
High and ultra-high chromium alloy casting balls AQCr–20 2.0~3.3 ≤1.2 0.3~1.5 18.0~23.0 0~3.0 ≤0.10 ≤0.06
High and ultra-high chromium alloy casting balls AQCr–26 2.0~3.3 ≤1.2 0.3~1.5 23.0~30.0 0~3.0 ≤0.10 ≤0.06


Mechanical Properties And Microstructure

Name Brand name Hardness(HRC) Hardness(HRC) Impact value ak(J/cm²) Microstructure Time of Falling Balls (times)
Quenched (A) Unquenched (A)
High and ultra-high chromium alloy casting balls ZQCr–12 ≥60 ≥55 ≥3.0 M+C ≥12000
High and ultra-high chromium alloy casting balls ZQCr–15 ≥60 ≥55 ≥3.0 M+C ≥12000
High and ultra-high chromium alloy casting balls ZQCr–20 ≥60 ≥55 ≥3.5 M+C ≥15000
High and ultra-high chromium alloy casting balls ZQCr–26 ≥60 ≥55 ≥4.0 M+C ≥18000


Product Specification And Weight

Ball Diameter (mm) Weight of Each Ball (kg) PCS/ton Ball Diameter (mm) Weight of Each Ball (kg) PCS/ton
Φ20 0.034 31056 Φ90 2.9 345
Φ25 0.063 15873 Φ100 4 250
Φ30 0.11 9091 Φ110 5.3 188
Φ40 0.26 3891 Φ120 6.8 147
Φ50 0.51 2000 Φ125 7.75 129
Φ60 0.86 1153 Φ130 8.74 114
Φ70 1.37 729 Φ160 13.5 74
Φ80 2.05 487

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Who We Are

Anhui Ningguo Wanfu New Material Science and Technology Development Co., Ltd. is located at the foot of the Huangshan Mountain -- the capital of wear-resistant materials in China, the provincial high-tech economic and technological development zone, and is a professional manufacturer of wear-resistant materials series products.
Wear-resistant material technology combined with grinding technology as the guide, sets scientific research, design, development, manufacturing, and technical services as one. With a resin sand extrusion model automatic production line, resin sand automatic production line, iron film coated sand casting production line, with no box shape casting production lines, automatic oil quenching heat treatment production line, desktop car and well type heat treatment furnace, shot blasting machine and direct reading spectrometer, chemical analysis instruments, metallurgical microscope, durometer, impact tester, etc. A full set of production and physical and chemical testing equipment...

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