钢厂
B元素对高牌号无取向硅钢热轧板组织和性能的影响
借助实验室设备研究了B元素对高牌号无取向硅钢热轧板组织和磁性能的影响。结果表明,与无硼钢相比,含硼钢的热轧板晶粒尺寸略小,析出物的类型和尺寸没有区别,主要是AlN和(AlN+MnS)复合析出物,少量的MnS析出物,尺寸集中在1.0～2.5μm范围内。未发现BN析出物。在力学性能方面,B对钢的软化作用不明显。在磁性能方面,含硼钢的铁损为3.215W/kg,磁感为1.710T,综合磁性能比无硼钢差。 Influences of boron on microstructure and properties of hot rolled band in high-grade non-oriented silicon steel are researched in this paper by experimental equipments.Compared with boron-free steel,the result shows that boron-bearing steel has smaller grain size,but the type and size of precipitations have no differences.The main precipitates are AlN,(MnS + AlN) composite precipitate and few MnS,the range of which are between 1.0 μm and 2.5 μm.BN precipitation is not found.With reward to mecha...
本钢热轧厂无取向硅钢生产工艺
冷轧无取向硅钢是高技术含量、高附加值产品,工艺复杂,生产周期长,过程控制难度大,被誉为钢铁产品中的\"工艺品\"。热轧生产工艺又是无取向硅钢生产的重中之重,直接决定了硅钢的铁损和电磁性等多项指标。 Cold rolled non-oriented silicon steel is high technology content、high addedvalue product. Its process is complex, Its production cycle is of Length, and Its Process control is difficult. Which is known as the iron and steel products \" Arts and crafts\". Hot rolling production process is the top priority of non-oriented silicon steel, Which Directly determines iron loss of the silicon steel and electromagnetic property, etc many index.
常化温度对含1.5%Si无取向电工钢磁性能的影响
研究了CSP工艺流程生产的硅含量为1.5%的无取向电工钢在不同常化温度下对磁性能的变化。研究结果表明:随着常化温度的提高,热轧板的晶粒尺寸增大,且组织均匀性提高;此外成品的有利织构组分{100}<0vw>、α、η增强,不利织构组分减弱;铁损P1.5/50呈下降趋势,磁感B50上升平缓。在常化工艺为970℃×2.5min下,对应的铁损P1.5/50<3.4W/kg,磁感B50>1.74T。 The effect of normalizing temperature on the magnetic properties of non-oriented electrical steel containing 1.5%silicon produced by CSP process was studied.The results show that with increasing normalizing temperature,the average grain size of hot-rolled plate increases and the microstructure uniformity is improved.Furthermore,the texture components of finished products are improved through enhancing of{100}<0vw>,αandηtextures and weakening of{111}<112>texture;the core loss P1.5/50 ...
取向硅钢含铬无机绝缘涂层的研究进展
绝缘涂层可以有效提高硅钢片的耐蚀、耐腐、磁、绝缘等性能，因此取向硅钢涂装绝缘涂层是取向硅钢生产过程中重要的一环。本文对取向硅钢含铬无机绝缘涂层以及氮化铬涂层的性能优缺点进行了介绍，并对国内无机含铬取向硅钢绝缘涂层及氮化铬涂层的研究现状进行了综述。最后对未来含铬无机绝缘涂层的研发方向进行了展望。 Insulation coating can effectively improve the corrosion resistance of silicon steel sheet, such as corrosion, magnetic, insulation performance, thus oriented silicon steel insulation coating is the important part of oriented silicon steel production process. In this paper, the inorganic insulation coating oriented silicon steel containing chromium and chromium nitride coating performance advantages and disadvantages are introduced.In addition, the research status of insulation coating and chrom...
低温普通取向硅钢高温退火过程中高斯晶粒的演变
对低温加热工艺生产的普通取向(common grain-oriented,CGO)硅钢的高温退火过程进行了中断实验,材料为含3.0%Si、0.5%Cu、0.009 8%S(均为质量分数)的以Cu2S为主抑制剂的普通取向CGO钢。原始板坯厚度为230 mm,于1 200℃均热后经4道次粗轧、7道次精轧至2.3mm;热轧板采用两次冷轧法轧至0.3mm,中间完全脱碳退火,最后于1 200℃高温退火。最后样品的磁性能:铁损P17/50为1.182W/kg,磁感应强度B8为1.897T。借助配有EDAX OIM电子背散射衍射(EBSD)系统的ZEISS SUPRA 55VP扫描电子显微镜,对高温退火过程中高斯晶粒的演变进行了研究,结果表明:升温过程中晶粒尺寸增长缓慢,650℃时取向分布函数(ODF)图出现高斯织构组分,但强度很弱,高斯晶粒偏离角小于9°;950℃时高斯晶粒平均生长速度超过其他晶粒;950~1 000℃时高斯晶粒异常长大,偏离角降至约3°;在950℃之前高斯取向晶粒相比于其他晶粒没有尺寸优势。 The high-temperature annealing process of common grain-oriented(CGO)silicon steel was investigated by interrupting test.The samples were rolled from CGO silicon steel slab under low reheating temperature.The CGO silicon steel,taking Cu2S as the main inhibitor,contains3.0%Si,0.5%Cu,and 0.0098%S.The original casting slab is 230mm in thickness.After 1 200℃reheating,four-pass rough rolling and seven-pass finish rolling were conducted to make the thickness of the slab get to 2.3mm.Then the hot rolled...
RH精炼喂CaSi线去除无取向硅钢中的非金属夹杂物
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...
