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Ductile iron and gray iron composite brake drum
Invention patent number: 202110843768.5
1. The outer layer of the cast iron composite brake drum is made of high-strength ductile iron, while the inner layer is made of wear-resistant gray cast iron; the two layers are metallurgically fused through heat treatment.
2. The dual-metal cast iron composite brake drum has approximately 50% higher stiffness than steel composite brake drums.
3. According to professional testing, the service life of cast iron composite brake drums is 2.5 times longer than that of ordinary gray iron brake drums.
4. In high-temperature environments, the strength and stiffness of cast iron composite brake drums degrade minimally, making them more suitable for engineering vehicles that require prolonged braking under harsh road conditions.