2014.06.14 Shanghai kai rich industrial co., LTD. (p20 steel sales http://www.xfmjgy.cn information: in the feed line technology production of nodular cast iron, on the basis of theoretical analysis, through the analysis of the original into the production method of CAM shaft when the cause of the problem, the feed production line technology is verified the rationality and feasibility of FCD700 ductile iron camshaft, and develop the technology to replace the original into feed line method is used to process in the production of FCD700 ductile iron camshaft, and through the industrial test of test samples collected in the process of spectral analysis, tensile samples, metallographic specimen, and analyzes the experimental data. Shanghai kai rich industrial co., LTD. (p20 steel sales http://www.xfmjgy.cn industrial test results show that the FCD700 ductile iron camshaft was produced by feeding line technology, spheroidizing rate, the size of the graphite ball casting is better than the original into process parameters such as grade, and highly improve the stability of the mechanical properties of castings, spheroidizing treatment effect is stable and good reproducibility; Feed line technology of hot metal silicon increasing quantity is small, can use a lot of burden, reduce the production cost, and can be flexibly adjusted pressure casting machine in magnesium residual fluctuations; While feeding line process which eliminated spheroidizing in flue gas, in large part's impact on the environment and pollution, reduces the labor intensity of workers. 　　2014.06.14上海偕富实业有限公司（p20模具钢http://www.xfmjgy.cn销售）资讯：在对喂线技术工艺生产球墨铸铁进行理论分析的基础上，通过分析原冲入法工艺生产凸轮轴时存在问题的原因，验证了喂线技术生产FCD700球墨铸铁凸轮轴的合理性及可行性，进而制定出了采用喂线技术工艺替代原有冲入法工艺生产FCD700球墨铸铁凸轮轴的方案，并进行了工业化试验，试验过程中采集了光谱分析试样、拉伸试样、金相试样，并对试验数据进行了整理分析。 上海偕富实业有限公司（p20模具钢http://www.xfmjgy.cn销售）的工业化试验结果表明：采用喂线工艺生产FCD700球墨铸铁凸轮轴时，铸件球化率、石墨球尺寸等级等参数都优于原冲入法工艺，且铸件力学性能的稳定性得到很大改善，球化处理效果稳定，重现性好；喂线技术工艺对铁水增硅量小，可大量使用回炉料，降低了生产成本，并能灵活调整气压浇注机内镁残量的波动；同时喂线处理工艺在很大程度上消除了球化作业时烟气对环境的影响和污染，降低了工人劳动强度。