Cylinder AlNiCo Magnet Stacked Cube Formation

Cylinder AlNiCo Magnet Six Parallel Arranged

Cylinder AlNiCo Magnet Custom Cast Polished Magnets丨CORT

Cylinder AlNiCo Magnet Product Overview

Cylinder AlNiCo Magnet represents a versatile line of cylindrical magnetic components manufactured using traditional casting processes. These cylindrical magnets feature a silver metallic appearance with either polished or painted finishes, offering excellent dimensional precision (±0.1mm tolerance) and magnetic stability. The casting workmanship allows for customized specifications while maintaining consistent performance across various industrial applications. Cylinder AlNiCo Magnet is particularly well-suited for applications requiring uniform magnetic fields and reliable operation in demanding environments.

Cylinder AlNiCo Magnet Technical Specifications

Parameter	Specification
Material	Cast AlNiCo alloy (aluminum-nickel-cobalt)
Shape	Cylindrical with custom diameters and lengths
Workmanship	Investment casting process
Coating	Polished or painted surface finish options
Tolerance	±0.1 mm on critical dimensions
Magnetization Direction	Axial (standard), radial, or custom directions
Magnetic Properties	Br: 1.0-1.4 T, Hc: 350-500 Oe
Operating Temperature	-40°C to +550°C
Typical Sizes	Diameters: 3mm to 50mm, Lengths: 5mm to 200mm
Density	7.0-7.4 g/cm³
Hardness	450-550 HV

Casting Process Advantages

Cylinder AlNiCo Magnet utilizes traditional casting technology, which offers several key benefits:
- Design Flexibility: Capable of producing custom cylindrical dimensions and configurations
- Cost-Effective Production: Economical for medium to large volume requirements
- Size Capability: Can produce larger sizes than sintered alternatives
- Material Utilization: Efficient material usage with minimal waste
- Magnetic Performance: Optimized magnetic properties through controlled cooling

Cylinder AlNiCo Magnet Application Fields

Speaker Systems: Precision cylindrical magnets for audio equipment and loudspeakers
Industrial Machinery: Position sensors, encoders, and magnetic couplings
Jewelry Design: Custom magnetic components for magnetic clasps and jewelry applications
Solenoid Devices: Core components for solenoid valves and actuators
Motor Assemblies: Rotor and stator components for various motor types
Instrumentation: Calibration equipment and precision measuring devices

Customization Options

Cylinder AlNiCo Magnet offers extensive customization options to meet specific application requirements:
- Dimensional Customization: Custom diameters (3mm-50mm) and lengths (5mm-200mm)
- Surface Finishes: Polished metallic finish or custom-painted colors
- Magnetization Options: Axial, radial, or specialized magnetization patterns
- Hole Configurations: Optional axial holes for mounting and assembly
- Tolerance Levels: Standard ±0.1mm or enhanced precision available for critical applications
- Material Grades: AlNiCo 2, 5, 8, and 9 grades to optimize performance for specific applications

Casting Process Details

The manufacturing process for Cylinder AlNiCo Magnet involves several critical stages:
1. Pattern & Mold Making
  - Sand molds for standard products
  - Investment casting for precision components
  - Mold temperature preheating to 200-300°C
2. Alloy Melting
  - Vacuum induction melting at 1500°C
  - Strict composition control (±0.1% for key elements)
  - The degassing process to remove impurities
3. Casting & Solidification
  - Directional solidification at 10°C/min cooling rate
  - Vertical casting for optimal grain structure
  - Pressure-assisted casting for complex geometries
4. Heat Treatment
  - Solution annealing at 1200°C for 2 hours
  - Magnetic field annealing at 800°C (10 kOe applied field)
  - Tempering at 600°C for stress relief

Sintered AlNiCo Magnet Technical Parameters Table

Parameter Item	Specification Range	Testing Standard
Material Composition	Al-Ni-Co-Cu-Fe alloy	ASTM A801
Remanence (Br)	1.0-1.4T	IEC 60404-5
Coercivity (Hc)	350-500 Oe	IEC 60404-5
Operating Temperature	-40°C ~ +550°C	ISO 9001:2015
Density	7.0-7.4 g/cm³	ASTM B328
Hardness (Hv)	450-550	ISO 6507-1
Thermal Expansion Coefficient	11×10⁻⁶/°C (20-200°C)	ASTM E228

Frequently Asked Questions—Cylinder AlNiCo Magnet

1. What are the main differences between Cylinder AlNiCo Magnet and sintered AlNiCo magnets?

Cylinder AlNiCo Magnet uses casting technology allowing larger sizes (up to 50mm diameter) with better cost efficiency for medium to large volumes. Sintered products offer tighter tolerances (±0.05mm vs. ±0.1mm) but are limited to smaller dimensions. Cast magnets typically have slightly higher magnetic properties while sintered versions provide better mechanical strength.

2. What is the maximum customizable cylinder size?

Standard production range includes diameters from 3mm to 50mm and lengths from 5mm to 200mm. Special customizations can achieve diameters up to 80mm and lengths of 300mm, though feasibility assessment is required. Very large components may need to be manufactured in segments and assembled.

3. How to choose between axial and radial magnetization for Cylinder AlNiCo Magnet?

Axial magnetization (poles on cylinder ends) works best for linear magnetic field applications. Radial magnetization (poles on cylinder sides) is ideal for rotating applications like motors and sensors. Our engineering team can provide magnetization direction recommendations based on your specific design requirements and magnetic circuit configuration.

4. What is the corrosion resistance difference between polished and painted finishes?

Polished finish relies on natural oxide layer providing good corrosion resistance in dry indoor environments (up to 5 years). Painted finishes (epoxy or polyurethane) offer enhanced protection with salt spray resistance up to 500 hours, suitable for humid or mildly corrosive environments. For marine or chemical environments, additional nickel plating is recommended.

5. Can you provide Cylinder AlNiCo Magnet with holes?

Yes, we offer axial holes with diameters from 1mm up to 80% of the magnet diameter (depending on wall thickness requirements). Standard hole tolerance is ±0.1mm, with precision options available to ±0.02mm. Threaded holes can be provided for direct mounting applications.