Name: China Heat Resistant Bar Magnets Manufacturers Factory - Bulk Heat Resistant Bar Magnets - Jinconn
Brand: Jinconn
SKU: 293896507

Description

Send Inquiry

Product Description and Application Fields

Long-term reliable heat resistant bar magnets is engineered for high-performance magnetic applications requiring precise form factors. Crafted from premium NdFeB (Neodymium-Iron-Boron) material, this high performance heat resistant bar magnet offers exceptional magnetic strength within a compact, sleek body. Designed with smooth edges and optional chamfers or grooves, it is ideal for specialized assemblies or embedded systems.

Technical Specifications

Product Name	heat resistant bar magnets
Magnet Grade	N48 (Br ≥ 14.8 KGs, Hcj ≥ 10.5 KOe) - Customizable
Dimensions	25mm × 5mm × 8mm
Tolerance	±0.05 mm (Length, Width, Thickness)
Operating Temperature	≤ 80°C (Customizable high-temp versions available)
Density	≥7.5 g/cm³
Surface Magnetic Field	4300 Gauss (Measured using Japan TM-801 Gauss meter)
Magnetic Flux	2.0 mWb (Measured; value varies by material grade)

Surface Treatment & Coating Technology

- Laser Cladding:

Nickel-based alloy fusion at edges → Enhanced hardness

- Cleaning & Degreasing:

Ultrasonic cleaning with alcohol/specialized solvents

- Activation Treatment:

Immersion in dilute HCl/H₂SO₄ → Improved coating adhesion

Appearance and Dimensional Inspection

Visual Quality Screening

Using standardized illumination and controlled inspection environments, experienced quality engineers conduct comprehensive visual evaluations to identify any physical irregularities-including micro-cracks, edge chipping, foreign inclusions, surface pinholes, oxidation spots, or other appearance defects.

AI-Driven Automated Inspection

Advanced machine-vision platforms equipped with high-speed cameras and AI defect-recognition algorithms continuously scan each magnet. The system automatically flags and removes units with structural flaws, surface imperfections, discoloration, or dimensional inconsistencies, greatly enhancing precision and inspection throughput.

Magnetic Flux Uniformity Verification

Each production batch undergoes flux testing with precision fluxmeters and Hall-effect analyzers. These tests validate magnetic output consistency, ensuring every magnet meets performance specifications required for downstream application

Reliability Testing

This precision customized professional grade heat resistance high magnetic strength permanent rectangular ndfeb magnet through the following reliability tests :

▲ Magnetic Performance:

- Field strength mapping (Gauss meter)

- Stability under thermal/humidity aging

▲ Physical Properties:

- Hardness (Rockwell/Vickers testers)

- Density measurement

- Dimensional accuracy (micrometer/caliper)

▲ Environmental Adaptability:

- Temperature cycling: -40°C to +80°C

- Humidity: >90% RH exposure

Packaging & Transportation

Defect Elimination:

100% inspection using calipers, projectors, visual checks, and automation to reject magnets with cracks, chips, oxidation, or coating defects.

Consistent Magnetization & Arrangement:

Magnets are uniformly magnetized and arranged per customer requirements to ensure performance and enable automated assembly.

Vacuum Packaging:

Multi-layer vacuum sealing with moisture barriers, desiccants, or nitrogen prevents corrosion and magnetic interference during storage and transport.

Why Choose Us ?

▲ Industry Expertise & Innovation

Over 20 Years of Experience in the rare earth permanent magnet industry.
Specialized in NdFeB magnet manufacturing, with customized solutions for demanding applications.
Strong R&D capabilities, including close collaboration with universities and independent lab testing.

Advanced Production Capabilities

Fully equipped modern manufacturing facility in Dongguan, covering [insert area if available, e.g. 5,000+ m²].
Equipped with precision cutting, coating, and inspection lines.
Full process control from raw material selection to final surface treatment, ensuring stability and high-quality yield.

Customer-Centric Customization

Capable of designing magnets based on customer drawings or performance specs.
Supports low-volume prototypes and large-scale production.
Offers technical consultation to support integration into final products.

Usage Precautions

Handle gently: Avoid impacts/drops (brittle material).

Prevent pinching: Slide magnets apart-do not pry.

Polarity check: Install correctly to avoid malfunctions.

Avoid moisture/acids: Store in dry, mild environments.

Keep away from sensitive devices: Hard drives, IC cards, pacemakers, etc.

Customization & Services

Custom magnet size, shape, and coating (layers, thickness, color)

Tailored magnetization direction and field strength

Laser engraving service for logos or serial numbers

Packaging and suction force testing for special applications

▼ Magnetic Solutions That Move Your World

If you have any magnet-related needs, we offer free customized magnet services. Please feel free to contact us at any time.

FAQ

Q.Will the magnet lose its magnetism over time?

Under normal conditions (avoiding overheating or mechanical shock), neodymium magnets retain their magnetism for decades. Exposure to high temperatures (above 80°C for some grades) can cause irreversible demagnetization.

Q.Can I use these magnets for magnetic therapy or health purposes?

While magnetic therapy is a popular topic, no conclusive scientific evidence supports health benefits from permanent magnets. Use with caution and avoid placing near pacemakers or other medical implants.