硅钢资料

结合工业化生产的高效硅钢,进行了RH精炼稀土处理试验研究。针对不同的稀土处理条件,观察了夹杂物的形貌和尺寸分布,探讨了稀土处理后钢中的夹杂物形成、变化规律。结果表明:试验条件下,最佳的稀土合金添加数量为0.6～0.9 kg/t。经过合适的稀土处理后,可以有效抑制尺寸相对较小的、不规则的AlN、MnS复合夹杂生成,促进钢中微细夹杂物的聚合、上浮,钢质纯净度得到明显提高。此时,钢中全氧含量最低,脱硫效果最佳,钢中的夹杂物主要是尺寸相对较大的、近似球形或者椭球形的稀土类夹杂。 Based on the industrial production of non-oriented silicon steel,the experiment on RE treatment during the RH refining process was studied.The morphology and the size distribution were observed for the steel specimens treated with different RE treatment conditions.Further more,the formation and change of inclusions of final steel sheets after RE treatment were discussed.The results show that the suitable RE added amount was 0.6～0.9 kg/t.After the suitable RE treatment,the formation of AlN and Mn... 

 

结合工业化生产的无取向硅钢,进行了RH精炼喂CaSi线去除钢中的非金属夹杂物试验研究。针对不同的钙处理条件,分析了CaS夹杂生成热力学,观察了夹杂物的形貌和尺寸分布,确定了夹杂物的类型、数量,探讨了钙处理后钢中夹杂物的变化规律。结果表明,本试验条件下,钙处理可以有效抑制MnS、AlN夹杂物的生成,有效促进钢中微细夹杂物的聚合、上浮、去除,钢质纯净度明显提高。经过合适的钙处理后,钢中的夹杂物以独立存在的CaO为主,同时有少量含CaO、SiO2、MgO的复合夹杂,没有发现CaS夹杂存在。这部分夹杂物的尺寸集中分布在2～20μm,数量约为1.8×105个/mm3。 Experimental study on removal of non-metallic inclusions in non-oriented silicon steel obtained from industrial production by CaSi wire feeding during RH refining process was carried out.The thermodynamics of CaS inclusion formation was analyzed,the morphology and the size distribution of inclusions were observed,and the numbers and types of inclusions were also determined for the steel specimens treated under different calcium treatment conditions.Furthermore,the variation of inclusion characte... 

本发明公开了一种无瓦楞状缺陷的高磁感低铁损无取向电工钢板，其各化学元素质量百分含量为：0＜C≤0.0035％、Si：1.2～2.8％、Mn：0.2～1.0％、P：0.04～0.15％、Sn+Sb：0.02～0.2％，余量为Fe和其他不可避免的杂质。此外，本发明还公开了上述高磁感低铁损无取向电工钢板的制造方法，其包括步骤：(1)冶炼和连铸，其中在该步骤不采用电磁搅拌；(2)热轧，其包括：粗轧、精轧、卷取和均热；其中在粗轧步骤采用2～6道次进行轧制，且粗轧单道次压下率控制在20％～40％之间；(3)上述热轧步骤后不进行常化步骤而直接进行冷轧；(4)连续退火。本发明所述的无瓦楞状缺陷的高磁感低铁损无取向电工钢板在保证较低生产成本的同时，还具有高磁感和低铁损的特性。

利用DSC、XRD,结合热焓分析对硅钢级氧化镁和二氧化硅的固相反应行为进行了研究。比较了不同二氧化硅原料及混合方法对硅钢级氧化镁反应性的影响,找到了一种更为有效的硅钢级氧化镁反应性的评估方法,克服了传统柠檬酸活性法在比较不同厂家生产的氧化镁的反应性上的局限性。进一步研究了Na₂B₄O₇添加剂、TiO₂添加剂对氧化镁和二氧化硅反应行为的影响,结果表明,Na₂B₄O₇添加剂含量的增加对反应有利,而TiO₂添加剂对反应有阻碍作用。 The solid-state reaction behavior between silicon-steel grade MgO and SiO₂ was investigated by DSC and XRD combined with enthalpimetric analysis.The influence of different kinds of SiO₂ and different preparation methods were studied and a specifical measurement that is more reliable was proposed to evaluate reactivity of silicon steel grade MgO.It overcomes the limitation of the traditional citric acid activity（CAA） method,which can not be used to evaluate the reactivity of... 

聚焦无取向硅钢产品标准,从电磁性能、表面性能、机械性能以及尺寸公差与边部质量等维度对国际标准IEC、EN、JIS、ASTM以及国标GB进行了分析研究。分析得出,各类标准在电磁性能方面要求基本一致;ASTM标准的机械性能要求有别于其他几个标准。 In this paper,non-oriented silicon steel standards of EN,JIS,GB and ASTM were compared and analyzed. It is showed that,all types of standards in electromagnetic performance requirements are basically the same. Surface properties in ASTM standard are expressed in the most detailed. The mechanical properties requirements of the standards,except for ASTM,are basically the same. 

选用国内外无取向硅钢标杆企业A、B、C的产品,采用非水溶液电解提取+SEM(EDS)方法,分析了其典型牌号对应成品试样中的夹杂物。结果表明,从磁性能控制角度而言,受钢的化学成分及生产工艺影响,A、B、C企业成品试样的夹杂物尺寸、种类、数量存在差异,这些差异对其磁性能产生显著影响;从夹杂物控制角度而言,A、B、C企业对应成品试样的夹杂物,以MnS、CuxS复合或者AlN、MnS、CuxS复合为主,其中1.0μm以下的夹杂物数量分别为2.34×107个/mm3、2.98×107个/mm3和11.98×107个/mm3,1.0μm以上夹杂物数量均很少,夹杂物的平均尺寸从大到小依次为A企业、B企业、C企业。 According to the production of three benchmarking manufacture enterprises A,B and C of non-oriented silicon steel at home and abroad,the inclusions in finished steel samples with typical grades were investigated by electrolytic extraction from non-aqueous solution and SEM(EDS).Results show that,from the viewpoint of improving the magnetic properties,affected by chemical composition and production technique,the size,type and amount of inclusions in finished steel samples are various,which will af... 

本发明公开了一种电化学评价取向硅钢氧化层的装置及方法，包括电解池、设于电解池一侧的磁铁组、设于电解池上的饱和甘汞电极和铂电极以及与电解池连接的电化学工作站；磁铁组包括固定在电解池上的固定磁铁和与固定磁铁磁性连接的移动磁铁，移动磁铁设于电解池侧面的出口上；参比电极设于磁铁组与辅助电极之间；参比电极和辅助电极与电化学工作站连接。本发明的评价方法通过电化学测量取向硅钢试样的电位‑时间曲线，计算出取向硅钢氧化层各分层的溶解电量，实现了对取向硅钢氧化层各分层的快速、准确测定，可以区分出Mg2SiO4玻璃膜底层、SiN层、SiO2层、FeO及铁橄榄石层等分层性能，为取向硅钢生产工艺参数的控制提供指导。

采用电解法和扫描电镜研究了300 t转炉-RH精炼钙处理对无取向硅钢板（%:≤0.005C、1.2～2.2Si、0.2～0.6Mn、≤0.20P、≤0.005S、0.2～0.6Al、0～0.01Ca）中夹杂物的影响。结果表明,钢中Al含量为0.25%和0.35%时,钢中溶解氧均小于1×10^-4%,钙处理后都会产生CaS夹杂物,尤其是含0.35%Al的钢水;钙处理可以有效减少钢中的夹杂物数量,尤其是0.5μm以下的微细夹杂物数量;钙处理后夹杂物的种类以AlN、CaS为主,同时还含有少量的氧化物夹杂物以及AlN-CaS复合夹杂物,尺寸主要为1.5～5.0μm。 The effect of 300 t converter-RH refining calcium treatment on inclusions in non-oriented silicon steel sheet （%:≤0.005C,1.2～2.2Si,0.2～0.6Mn,≤0.20P,≤0.005S,0.2～0.6A1,0～0.01Ca） has been studied by electrolysis and scanning electron microscope.Results show that with 0.25%and 0.35%Al content in steel,all the dissolved oxygen in liquid is less than 1×10^-4%,and the CaS inclusions are produced after calcium treatment,especial for the liquid containing 0.35%Al;the amount of inclusions in ste... 

本发明公开了一种硅钢含铬涂层废液处理过程中六价铬浓度在线监控方法，提出一种准确检测废液中六价铬含量的方法和检测时间的确定，实现了含铬废水原液中六价铬含量预测和焦亚硫酸溶液添加量的确定及六价铬在线检测预处理系统的启动时间的确定，确保处理装置安全高效运行。在酸化还原罐上安装氧化还原电位检测仪，实时检测含铬废液在整个处理过程中ORP的变化，推测含铬涂层废液中六价铬还原情况，初步判断还原过程的终点，为在线六价铬自动检测仪的启动提供依据，最终实现解毒后废液六价铬的含量低于0.05mg/L，达到六价铬含量超低处理的要求。

对碳-锰-硅钢进行不同配分温度的Q&P(Quenching and Partitioning)处理,测试了热处理后不同钢的力学性能和残余奥氏体含量,并用扫描电子显微镜和透射电镜观察其显微组织,分析了配分温度对显微组织和力学性能的影响。结果表明:试验钢显微组织基本由低碳板条状马氏体、块状铁素体和条状残余奥氏体组成;随配分温度的升高,试验钢的抗拉强度呈下降趋势,伸长率与奥氏体含量的变化趋势相同,但变化规律不确定;提高锰含量能稳定残余奥氏体,从而提高试验钢的伸长率,并使伸长率对配分温度不敏感。 The C-Mn-Si steel was quenched and partitioned at different partitioning temperatures,the mechanical properties and residual austenite contents were investigated,the microstructure was observed by SEM and TEM,and the effect of partitioning temperature on microstructure and mechanical properties was analyzed.The results show that the microstructure of the tested steel consisted of lath martensite with low carbon,nubby ferrite and banded residual austenite.The tensile strength of the tested steel ... 

本发明涉及一种高压电机用无取向硅钢50SBW600的制备方法，包括，S1，将装有精炼钢水的钢包运至回转台，回转台转到浇铸位置后，将钢水注入中间包；S2，中间包通过水口将所述钢水分配至若干个结晶器中，所述结晶器中设置有浸入式水口，S3,钢水在结晶器内生成晶核，结晶器将带有晶核的钢水下放至通道；S4，通道上设有第二电磁搅拌器，第二电磁搅拌器对通道内钢水进行电磁搅拌,所述钢水在通道中逐步转换为钢坯；S5,拉矫辊将的所述钢坯拉出通道并对钢坯进行形态矫正；S6,切断装置所述钢坯进行切割。本发明通过在无取向硅钢50SBW600制备过程中设置双电磁搅拌装置，充分保证连铸过程中钢坯中的等轴晶数量，保障了产品表面缺陷质量。