Bimetal flywheel

The invention relates to a bimetallic flywheel which comprises a flywheel body and a friction layer combined with a clutch, a cavity is formed in the face, opposite to the clutch, of the flywheel body, and molten iron of the friction layer is poured into the cavity to form the friction layer. The friction layer made of different materials and the flywheel body are integrally cast, on one hand, the friction layer makes contact with a clutch, the overall thermal stability and abrasion resistance of the flywheel can be improved, and the overall service life of the flywheel is prolonged; on the other hand, due to the fact that few materials are used for the friction layer, cost improvement caused by material lifting can be greatly reduced. 本发明涉及一种双金属飞轮，该双金属飞轮，包括飞轮本体和与离合器结合的摩擦层，飞轮本体与离合器的相对面设有型腔，摩擦层铁水浇铸到型腔内，形成摩擦层。采用材料不同的摩擦层与飞轮本体一体浇铸，一方面，通过摩擦层与离合器接触，可以提高飞轮整体的热稳定性和耐磨性，飞轮整体寿命得到提升；另一方面，因摩擦层材料使用较少，可以大幅降低材料提升引起的成本提高。