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custom high temperature resistant heavy duty permanent L -shaped countersunk magnet

This is a black L-shaped high-power magnet featuring a circular hole, typically formed by two perpendicular magnetic segments resembling the letter "L." Made from rare-earth neodymium, its black surface is coated with epoxy resin, classifying it as a custom-shaped irregular neodymium magnet.
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Description

This is a black L-shaped high-power magnet featuring a circular hole, typically formed by two perpendicular magnetic segments resembling the letter "L." Made from rare-earth neodymium, its black surface is coated with epoxy resin, classifying it as a custom-shaped irregular neodymium magnet.

Custom high temperature resistant heavy duty permanent L -shaped countersunk magnet

2025-7-16

1. Product Overview & Application Scenarios

This is a black L-shaped high-power magnet featuring a circular hole, typically formed by two perpendicular magnetic segments resembling the letter "L." Made from rare-earth neodymium, its black surface is coated with epoxy resin, classifying it as a custom-shaped irregular neodymium magnet.

This custom high torque high temperature resistant heavy duty permanent compact L -shaped countersunk magnet produces an intense magnetic field, making it highly effective for gripping and securing objects. Thanks to its perpendicular magnetic segments, it can attract items from multiple angles, offering greater versatility.

In industrial and manufacturing applications, these customized strong magnetic force stable high temperature resistant heavy duty permanent L -shaped countersunk magnets are commonly employed as magnetic clamps, providing secure fastening and positioning of metal workpieces. They are particularly useful in assembly, welding, and machining processes, where they serve as temporary fixtures to enhance precision and efficiency.

2. Technical Specifications

- Product Name: custom high temperature resistant heavy duty permanent L -shaped countersunk magnet

- Magnet Grade: N52 (Br ≥14.2 kGs, Hcj ≥12 kOe)

- Dimension: Y30mm x 30mm*10mm

- Dimensional Tolerance: +/-0.05

- Operating Temperature: ≤80°C (High-temp versions available)

- Density: ≥7.5 g/cm³

- Surface Magnetic Field: 3,200 Gs

- Magnetic Flux : 2.0 mWb (Fluxmeter-tested)

3. Surface Treatment & Coating Technology

To enhance this custom industrial use high remanence high temperature resistant heavy duty permanent L -shaped countersunk magnet’s corrosion resistance, surface quality, and magnetic stability, the following treatments are used:

Edge Reinforcement: Laser cladding with nickel-based alloy at magnet seams (prevents electrochemical corrosion)

Edge Rounding: Reduces magnetic field distortion

Default Coating: Triple layer Ni-Cu-Ni (customizable)

Standard Thickness: Ni (3μm) + Cu (5μm) + Ni (4μm)

Optional Coatings: Gold or silver plating for better conductivity and corrosion resistance

Coating Benefits:

Salt spray resistance and improved oxidation durability

Higher surface hardness and scratch resistance

Enhanced gloss, suitable for exposed parts

4. Appearance & Dimensional Inspection

Visual Inspection: Under standardized lighting, trained QC staff check for cracks, chipping, inclusions, pores, or oxidation.

Automated Intelligent Inspection: High-speed cameras with AI algorithms detect and reject defects (e.g., cracks, scratches, discoloration) and dimensional anomalies, improving yield and reducing human error.

Magnetic Flux Consistency Test: Fluxmeters or Hall-effect testers measure magnetic flux across batches to ensure uniform performance in end-user applications.

5. Reliability Testing

Impact & Vibration Test: Simulates shipping and usage conditions to ensure operational stability.

Constant Temperature & Humidity Test: Performed under 85°C and 85% RH for 96–500 hours. Performance and appearance are compared before and after testing.

Damp Heat Test: Evaluates resistance to high humidity and corrosion.

6. Packaging & Transportation

Defect Elimination: 100% inspection using calipers, projectors, visual checks, and automated systems to reject cracked, chipped, oxidized, or coated-defective magnets.

Uniform Magnetization & Structured Arrangement: Magnets are uniformly magnetized and arranged for optimal packaging based on customer requirements to ensure performance and facilitate automated assembly.

Vacuum Sealed Packaging: Multi-layer vacuum sealing with moisture barriers, desiccants or nitrogen, prevents corrosion and magnetic interference during storage and shipping.

Customized Outer Packaging: Shock-proof, moisture-resistant, and anti-magnetic leakage packaging (e.g., multilayer cartons, plastic boxes, metal shielding) ensures compliance with international logistics standards. Each box includes a product list, labels, and tracking codes.

With deep expertise in magnetic materials, we deliver solutions for industries like EVs, smart manufacturing, and electronics. Our strong technical capabilities and product consistency have earned the trust of customers worldwide.