家电板锈蚀影响因素及机理研究

发布时间：2018-06-09 03:32

  本文选题：家电用冷轧板 + 锈蚀　； 参考：《河北联合大学》2014年硕士论文

【摘要】：伴随国内家电市场的兴起，冷轧家电板作为高端冷轧板生产已越来越受到厂家的重视。冷轧家电板一般为冲压系列钢板，对表面质量具有严格要求，，为避免冷轧过程中出现产品锈蚀而影响产品表面质量的情况发生，通过电化学模拟加速腐蚀试验对比了冷轧各工序对冷轧板耐锈蚀性能的影响，探究了冷轧家电板在生产过程中锈蚀律，同时模拟研究了热处理工艺参数及工艺气氛对家电板耐锈蚀性能的影响，阐明了冷轧家电板在生产过程中容易产生锈蚀的机理，研究结果如下： 1）在冷轧生产过程中，通过对各工艺加工后试样进行电化学加速模拟腐蚀试验后可知：脱脂液对家电板耐锈蚀性能没有影响；罩式退火后试样耐锈蚀性能最差，与连退后试样耐锈蚀性能产生了较大差别，因此生产过程中退火工艺对试样耐锈蚀性能产生了较大影响。通过对锈蚀位置微观成分分析可知，试样表面残余元素的存在对试样耐锈蚀性能同样产生了重要影响。 2）通过对连退试样及罩退试样微观形貌成分分析可知，罩退试样因罩退热处理工艺参数与连退热处理工艺参数具有较大差别而产生的易析出元素以氧化物形式在钢板表面富集析出，与铁基体构成腐蚀微电池是造成罩退后冷轧板容易出现耐锈蚀性能降低的主要原因。 3）550℃是该家电用冷轧板开始回复再结晶温度，通过管式气氛退火炉模拟退火工艺参数后，确定退火气氛中氧元素的含量是影响冷轧板退火过程中易析出元素向钢板表面析出的重要影响因素；并根据该厂实际生产状况，制定退火工艺参数为退火温度达到650℃，退火保温32h后随炉冷却。经改进的退火工艺参数，不仅是使生产冷轧家电板确保了产品表面质量提高了产品合格率，同时也提高了生产效率节约能源。
[Abstract]:With the rise of home appliance market, cold rolled home appliance sheet has been paid more and more attention by manufacturers as a high-end cold-rolled sheet. The cold-rolled home appliance plate is generally a series of stamping steel plate, which has strict requirements on the surface quality. In order to avoid the product corrosion in the cold rolling process and affect the surface quality of the product, Through electrochemical simulation accelerated corrosion test, the effect of cold rolling process on corrosion resistance of cold rolled sheet was compared, and the rusting law of cold rolled home appliance sheet in production process was investigated. At the same time, the effects of heat treatment process parameters and process atmosphere on the corrosion resistance of home appliance plate are simulated, and the mechanism of corrosion is explained. The results are as follows: 1) in the cold rolling process, The results of electrochemical accelerated corrosion simulation tests showed that degreasing solution had no effect on the corrosion resistance of household appliances, and the corrosion resistance of the samples after mask annealing was the worst. The corrosion resistance of the sample is different from that of the back sample, so the annealing process has a great influence on the corrosion resistance of the sample. The results show that the presence of residual elements on the surface of the specimens also has an important effect on the corrosion resistance of the specimens. Due to the difference between the process parameters of heat treatment and that of continuous heat treatment, the precipitated elements are precipitated in the form of oxides on the surface of the steel plate. Corrosion microbattery formed with iron substrate is the main reason that the corrosion resistance of cold rolled sheet is easy to decrease. 350C is the recrystallization temperature of the cold rolled plate, and the annealing process parameters are simulated by the tube annealing furnace. It is determined that the content of oxygen element in annealing atmosphere is an important factor that affects the precipitation of easily precipitated elements to the surface of steel plate during the annealing process of cold rolled sheet, and according to the actual production condition of the plant, the annealing process parameters are as follows: annealing temperature up to 650 鈩

本文编号：1998681