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上海偕富實(shí)業(yè)有限公司（p20模具鋼http://www.xfmjgy.cn銷(xiāo)售）資訊：在對(duì)喂線技術(shù)工藝生產(chǎn)球墨鑄鐵進(jìn)行理論分析的基礎(chǔ)上，通過(guò)分析原沖入法工藝生產(chǎn)凸輪軸時(shí)存在問(wèn)題的原因，驗(yàn)證了喂線技術(shù)生產(chǎn)FCD700球墨鑄鐵凸輪軸的合理性及可行性，進(jìn)而制定出了采用喂線技術(shù)工藝替代原有沖入法工藝生產(chǎn)FCD700球墨鑄鐵凸輪軸的方案，并進(jìn)行了工業(yè)化試驗(yàn)，試驗(yàn)過(guò)程中采集了光譜分析試樣、拉伸試樣、金相試樣，并對(duì)試驗(yàn)數(shù)據(jù)進(jìn)行了整理分析。 上海偕富實(shí)業(yè)有限公司（p20模具鋼http://www.xfmjgy.cn銷(xiāo)售）的工業(yè)化試驗(yàn)結(jié)果表明：采用喂線工藝生產(chǎn)FCD700球墨鑄鐵凸輪軸時(shí)，鑄件球化率、石墨球尺寸等級(jí)等參數(shù)都優(yōu)于原沖入法工藝，且鑄件力學(xué)性能的穩(wěn)定性得到很大改善，球化處理效果穩(wěn)定，重現(xiàn)性好；喂線技術(shù)工藝對(duì)鐵水增硅量小，可大量使用回爐料，降低了生產(chǎn)成本，并能靈活調(diào)整氣壓澆注機(jī)內(nèi)鎂殘量的波動(dòng)；同時(shí)喂線處理工藝在很大程度上消除了球化作業(yè)時(shí)煙氣對(duì)環(huán)境的影響和污染，降低了工人勞動(dòng)強(qiáng)度。