Truck Fuel Pump Motor Magnet

Designed for the rigorous conditions of truck operation, including heavy loads, vibration, and variable fuel quality, our truck fuel pump motor magnet prioritizes extreme reliability and resistance to demagnetization. We use a high-coercivity ferrite material, optimized with additions of Samarium Oxide (Sm₂O₃) and Neodymium Oxide (Nd₂O₃). This results in a very high intrinsic coercivity (Hcj) of 380 kA/m for the truck fuel pump motor magnet.

Raw material processing involves high-energy ball milling, performed in stainless steel containers under an argon gas protective atmosphere to prevent oxidation. The milling time is extended to 36 hours to ensure ultimate homogeneity. The forming process employs bidirectional pressing technology at 200 MPa pressure. Mold wall lubrication technology is used during pressing to minimize friction and ensure density uniformity.

The sintering process features a multi-stage temperature profile with holding platforms at 500°C, 800°C, and 1200°C. This carefully controlled schedule ensures complete removal of organic processing aids and allows for full, controlled crystal growth. The magnetic circuit is specially optimized using electromagnetic field simulation software, ensuring the truck fuel pump motor magnet maintains stable magnetic output characteristics even when exposed to high ambient temperatures found in truck engine bays.

Environmental adaptability is rigorously tested, including damp heat testing (85°C / 85% Relative Humidity for 1000 hours), vibration testing (20-2000 Hz, 15G acceleration), and shock testing (75G, 6ms). The magnets receive an enhanced protective treatment, being encapsulated in PPS (Polyphenylene Sulfide) composite material. This offers outstanding chemical resistance, ensuring compatibility with a wide range of regional fuel formulations and additives.

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