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Help CenterChromium Alloy Cast Grinding Media Cr 1%-30% High Hardness 45-72HRC Low Breakage For Mineral Processing
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Chromium Alloy Cast Grinding Balls – Premium Quality from Huafeng
Product Description
Ningguo Huafeng Wear-Resistant Material Co., Ltd., founded in 2004 and located in Ningguo City, Anhui Province – China's renowned "Capital of Wear-Resistant Castings", is a National Specialized and Sophisticated "Little Giant" Enterprise, a National High-Tech Enterprise, and a holder of Provincial Enterprise Technology Center and Provincial Industrial Design Center. We have participated in drafting national standards for cast grinding balls (GB/T 17445-2022) and cast cylpebs.
Our chromium alloy cast grinding balls are manufactured with advanced facilities and strict quality control, delivering high hardness (45-72 HRC), low breakage (≤1% for high Cr), and excellent wear resistance for mining, cement and thermal power applications.
Advanced Manufacturing Facilities
- Fully automatic casting lines: 840 type shell molding cast ball line + resin sand micro-ball/segment line
- IGBT energy-saving medium frequency induction furnaces (multiple sets)
- Rotary drum dual-medium secondary quenching + mesh belt tempering line (oil, water, air quench options)
- Automatic molten metal transfer & pouring system
- Jiuding smart casting management system – digitalized whole process monitoring
- Full traceability system – every batch traceable from melting to finished product
Precision Testing Equipment
- German OBLF direct-reading spectrometer
- Rockwell hardness tester / Vickers hardness tester
- Impact testing machine
- Metallographic microscope
- Falling ball tester (>10,000 cycles for φ100mm high Cr balls)
- Furnace temperature tracker / Quenching medium viscosity meter / Cooling curve analyzer
- Ultrasonic flaw detector / Wear tester / Density meter etc.
Technical Advantages
- Patented heat treatment technology: Oil‑liquid two‑step quenching, water‑air alternate austempering (industry-leading)
- Multi-alloy ratio: Chromium 1%-30% (low, medium, high, ultra-high)
- Uniform hardness distribution: Surface-to-core difference ≤5 HRC
- Low breakage rate: ≤1% for high chrome, ≤2% for low/medium chrome
- Superior wear resistance: Extended service life, lower grinding media consumption
- Energy saving & cost reduction: Optimized alloy design reduces total cost of ownership
Product Grades & Performance
| Grade | Cr Content | Hardness (HRC) | Impact (J/cm²) | Breakage (%) | Microstructure | |-------|------------|----------------|----------------|--------------|----------------| | Low Chrome | 1-3% | 45-55 | ≥1.5 | ≤2 | Pearlite + Carbide | | Medium Chrome | 3-9% | 48-58 | ≥2.0 | ≤1.5 | Martensite + Carbide | | High Chrome | 10-18% | 58-62 | ≥3.0 | ≤1 | Martensite + M7C3 Carbide | | Ultra-High Chrome | 20-30% | 60-65 | ≥3.0 | ≤1 | Martensite + M7C3 Carbide |
Applications
- Mining: Iron ore, copper ore, gold ore, nickel ore
- Cement plants: Raw material grinding, clinker finish grinding, coal grinding
- Thermal power plants: Coal pulverizing
- Other: Chemical industry, metallurgical slag, ceramic raw materials
Why Choose Huafeng?
- National "Little Giant" & High-Tech Enterprise – Recognized for innovation and quality
- 60+ patents (including 30 inventions) – Proprietary technology
- Provincial Enterprise Technology Center & Industrial Design Center
- Participated in drafting national standards – GB/T 17445-2022, etc.
- Strict quality management – ISO9001, ISO14001, ISO45001 certified
- Total annual capacity: 130,000 tons – Reliable supply
- Exported to 30+ countries – Global presence
- Customized grinding solutions – Based on ore type, mill parameters
Packaging & Delivery
- Steel drums (850-900kg/drum) or ton bags (1,000kg/bag) on pallets
- Container loading: 20-25 tons per 20' container
- Lead time: 20-25 days after order confirmation
- Trade terms: FOB Shanghai (or other Chinese ports)
Contact us for a custom quotation. Please provide your mill parameters (type, diameter, rotation speed, ore type, feed size, required Cr grade) – our technical team will recommend the best solution.
Send Inquiry to This Supplier
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