1results about How to "Dense metallographic structure" patented technology

The utility model discloses an aluminum alloy cardba hub, including the rim and the spoke, the spoke is connected on the rim one end top, be equipped with a plurality of air holes on the spoke, and the one end of spoke is the mounting surface, and the center of mounting surface is the center's positioning hole, and be equipped with a plurality of mounting holes on the mounting surface, the recess of spoke and rim junction is provided with the air valve hole, and the air valve hole and air hole are staggered. Compared with the prior art, the air valve hole of the utility model is located in the recess of the junction of the spoke and the rim, and the air valve hole and the air hole are staggered, which is beneficial to stress dispersion, avoids the common crack caused by the overlapping of the air valve hole and the air hole position, and improves the safety performance of the aluminum alloy cardba hub.