【作者】 徐亮；

【导师】 曹富荣；

【作者基本信息】 东北大学 ， 材料加工工程， 2011， 硕士

【摘要】 本论文主要以中山中粤马口铁工业有限公司瓶盖马口铁的生产工艺开发为出发点,着重解决当瓶盖铁厚度由0.235mm减薄到0.23mm时,使板仍然能够具有良好的强度和回弹性能,满足国家标准中对瓶盖铁密封性的要求。通过对不同基板的性能比较与分析,发现中粤马口铁基板在性能上存在不足,进而提出改进的方法。经过实验铸锭的成分设计到热轧、冷轧、退火等工序,最终得到平整后的基板,并对平整后基板进行性能的研究,分析合金成分、轧制工艺、退火温度以及平整量对基板组织和性能的影响规律。主要研究结果包括如下：(1)合金元素C能够略微提高强度和硬度,Mn和Ti都能够提高材料的强度和硬度及弹性模量,但需控制其含量,过高将会增大各向异性,Ti含量控制在0.03%左右较为合适。(2)在相同的终轧温度下,卷取温度为560℃时的力学性能较好,在卷取温度相同时,较低的终轧温度对材料性能的提高是有利的,综合比较,选取终轧温度为840℃,卷取温度为560℃是较为理想的热轧工艺。(3)在不含Ti的基板中,550℃的力学性能指标较高,加入Ti后的基板在500℃时力学性能较好,因此,加入不同的合金成分需选择不同的退火制度。(4)增大平整量,可以提高基板的屈服强度、抗拉强度和弹性模量,但同时也使基板的各向异性变得更加严重。(5)在中粤板现有的合金成分及生产设备的基础上,添加0.03%左右的合金元素Ti,选择终轧温度为840℃,卷取温度为560℃作为热轧工艺,在不含Ti基板中,将退火温度控制在550℃左右,在含Ti基板中,将退火温度控制在500℃左右,适当的降低平整量,可获得较为理想性能指标的基板。更多还原

【Abstract】 This paper mainly take production process research of Zhongyue tinplate industrial company as starting point. Focus on sloving when the thickness of iron cap reduce to0.23mm from0.235mm,substrate still have good strength and resilience. So as to meet national standard requirements for the sealing cap iron. By comparision and analysis of performance, found deficiencies in performance of Zhongyue tinplate substrate. And improved an better method. After the composition experimental design to the hot-rolled ingot, cold-rolling, annealing and other processes, at last formed the final substrate. Research the properties of the final substrate and analysis of influence law about alloy composition, rolling craft, annealing temperature and smooth amount to the microstructure and properties of substrate. The main research results include the following:(1) Alloying elements C can sightly improve the strength and hardness. Mn and Ti are able to enhance the strength and hardness and elastic modulus, but it also need to control the content, otherwise too high will increase the anisotropy. Its content will appropriate when control at around0.03%.(2) At the same finishing temperature, coiling temperature of560℃will have good mechanical properties. At the same coiling temperature, a lower finishing temperature of the material is beneficial to improving the performance. In comprehensive comparision, select the finishing temperature of840℃,coiling temperature of560℃is ideal for the hot accidental.(3) Ti in the substrate-free, annealing temperature as550℃will have high mechanical performance. After adding Ti in substrate,500℃is an better temperature. So, adding a different alloy composition required to choose a different annealing system.(4) Increase the amount of formation, the substrate can increase the yield strength, tensile strength and elastic modulus, but also the anisotropy of the substrate become more serious.(5) Based on the existing alloy composition and production equipment of Zhongyue, adding 0.03%of alloy elements Ti, select the finishing temperature of840℃,coiling temperature of560℃.as hot rolling process. The Ti substrate-free, the annealing temperature was controlled at about550℃,the Ti substrate, the annealing temperature was controlled at about500℃.The appropriate level to reduce the amount available to a more satisfactory performance of the substrate.更多还原