Integrated Austempering Nodular Iron Axle Housing Process Development
The structure and development objectives of an integrated austempering nodular iron axle housing for commercial vehicles were introduced.The production trial process of this casting was elaborated.It concluded that:(1)Utilizing existing equipment and molds in the resin sand workshop,qualified integrated austempering nodular iron axle housing castings could be produced through casting trials and heat treatment tests.(2)Bench tests,road tests,and user trials of the integrated auste-mpering nodular iron axle housing showed that compared to cast steel axle housings,the weight of a single-piece housing was reduced by 80 kg,and costs were lowered by approximately 130 yuan.The scrap rate for small batch production was less than 5%.