硅钢资料

本发明涉及硅钢卷取领域，具体涉及提高硅钢收卷速度的卷取系统，包括机架、第一卷取辊、第二卷取辊、第三卷取辊和切捆机构，第一卷取辊、第二卷取辊和第三卷取辊依次转动设置于机架上；切捆机构包括切割刀、挤压板和成卷的胶带，切割刀竖直滑动设置于第一卷取辊和第二卷取辊的上方，切割刀上固定有两个支撑条，两个支撑条之间设置有支撑辊，成卷的胶带套设于支撑辊上，切割刀上还设有供胶带穿过的通槽；挤压板内设有装有墨水的盛墨腔，挤压板一侧的两端固定有排墨管，排墨管与盛墨腔连通，且排墨管与切割刀的侧壁转动连接。采用本技术方案时，有利于提高硅钢卷取效率。

本发明公开了一种拉矫机矫直低牌号无取向硅钢的方法，当焊缝达到拉矫机前面时，生产线的整体速度降低至28‑32m/min、拉矫机的辊系辊缝全部打开同时辊系不接触钢带、拉矫机的延伸率降到0.08％‑0.12％、拉矫机前后张力辊的压辊全部压下，焊缝通过拉矫机后，均恢复到正常水平。本发明的目的是提供一种拉矫机矫直低牌号无取向硅钢的方法，解决焊缝经过拉矫机时焊缝在拉矫机的拉伸矫直作用下发生断带的事故的问题。

本实用新型公开了一种硅钢片冲压模具，包括上模和下模，上模和下模之间通过导向杆连接，下模上设有出料槽，出料槽的底部设有一磨盘，磨盘通过齿轮连接电机。本实用新型结构设计合理巧妙，当硅钢片冲压下落时，磨盘通过电机带动转动，对硅钢片的周围进行打磨，使硅钢片边缘平整，叠铆时上下不易错位。

本发明揭示了一种高牌号无取向硅钢及其生产方法。所述无取向硅钢的化学成分以质量百分比计包含：C:0.002～0.004％，S≤0.003％，Si:1.4～1.7％，Mn:0.7～0.95％，P≤0.03％，Sn:0.015～0.035％，11×([Si]‑1.4％)＝14×([Mn]‑0.7％)。所述无取向硅钢的生产方法中，连铸坯加热温度1120～1150℃，精轧终轧温度为890±15℃，最后一道次精轧的压下量≥30％且最后两道次精轧的总压下量≥50％，卷取温度650±20℃；在酸连轧之前不需要进行常化处理，且所得无取向硅钢的磁性能佳，表面无瓦楞缺陷，满足低成本高牌号无取向硅钢的需求。

【作者】 刘彤； ...

通过观察冲剪边缘组织,测量冲剪边缘的显微硬度、残余应力的分布情况和磁性能的变化研究了冲剪加工对无取向硅钢50WW800边缘组织和磁性能的影响。对冲剪后硅钢片进行750℃退火,分析退火对组织和磁性能的影响。结果表明,硅钢片剪切边缘会存在0.4 mm的形变硬化层,边缘应力大,铁损增加。退火后变形减小,形变硬化层变小,残余应力大幅度减少,铁损减少。 The influence of punching process on cutting edge microstructure and magnetic properties of non-oriented silicon steel 50WW800was studied by observing microstructure and measuring microhardness near cutting edge.The residual stress distribution in the silicon steel tooth and magnetic properties were measured.Effect of annealing at 750 ℃ on microstructure and magnetic properties of the silicon steel was analyzed.The results show that a cut-edge hardening layer up to 0.4 mm is observed,residual st... 

考虑剪应变对微孔洞损伤演化的影响,对GTN损伤模型的损伤演化机制进行修正,建立了适用于不同应力三轴度水平的损伤模型。结合隐式应力更新算法和显式有限元计算,采用VUMAT子程序实现了修正GTN模型在有限元软件ABAQUS中的数值计算。通过模拟纯剪切和剪切-拉伸两组试样的损伤演化和断裂行为,验证了修正GTN模型在不同应力三轴度承载条件下的有效性。运用修正GTN损伤模型模拟含边部缺口的带钢在轧制过程中裂纹的萌生和扩展行为,模拟结果与实验相一致,表明该模型可有效地用于带钢缺陷在轧制过程中扩展行为的分析和预测。模拟和实验结果表明,带钢边部缺口在轧制过程中,缺口前沿和后沿均会萌生裂纹,且后沿裂纹扩展更为明显。 Considering the effect of shear strain of micro-void on damage evolution, a modified GTN model applicable to various stress triaxiality conditions is proposed by modifying the damage evolution mechanism of the GTN damage model. The modified model is implemented in commercial finite element software ABAQUS by combining the implicit stress update method with an explicit finite element solving algorithm and through the user-defined material subroutine VUMAT. The damage evolution and the failure pro... 

借助高温激光共聚焦显微镜,在线观察了不同Mn含量的无取向硅钢中夹杂物的尺寸、类型、数量变化。结果表明,Mn含量(质量分数)为0.77%、0.32%时,试样中的夹杂物数量分别约为1000万个/mm3、1600万个/mm3。Mn含量较高的钢种,会优先析出球形、椭球形MnS夹杂物,其析出数量较少,尺寸相对较大,可以有效抑制AlN、CuxS夹杂物析出;Mn含量较低的钢种,会在试样再加热后冷却过程中,先析出相当数量MnS夹杂物,并作为AlN夹杂物析出核心,形成MnS+AlN复合夹杂物。这种复合夹杂物数量较多,尺寸也较大。 Based on the high temperature confocal microscope, the chage of size, type, and quantity of inclusions in non-oriented silicon steels with different Mn content were observed by in-situ SEM. Results show that the inclusion quantities are 10 million per mm3 and 16 million per mm3,while the mass fractions of Mn are 0.77% and 0.32%, respectively. In the silicon steel with higher Mn content, the spherical and ellipsoidal MnS inclusion will precipitate first, which can retard the precipitation of AlN ... 

通过热力学计算,分析了实验钢中主要析出物析出的可能性。结果表明:在液相和固液两相区中,AlN和MnS均不能析出;在奥氏体区,AlN和MnS具备热力学析出条件,平衡析出温度分别为1547、1582 K。成品退火板中的析出物主要为AlN和MnS。扫描电镜下观察到的AlN形貌多为长条状,MnS形貌多为棒状或近似球形。这两种析出物占了析出物总量的85%以上,尺寸集中分布在400~800nm;复合析出物主要是(Al2O3+MnS)和(AlN+MnS),形貌不规则,尺寸集中在0.7~1.5μm;透射电镜下观察到了少量100nm以下独立的AlN析出。 According to thermodynamic calculation, the precipitation probability of precipitates was analyzed, AlN and MnS can not precipitate in liquid phase area and solid-liquid two-phase area. In austenite area, both the AlN and MnS have precipitation condition in thermodynamics and precipitates at 1547 K and 1582 K, respectively. The precipitates in annealing plate are mainly AlN and MnS. The shape of AlN is mostly strip, and MnS is stick or near sphericity. They accounted for over 85% of the total qu... 

【作者】 吴玉美； 陆晔； ...

介绍在取向硅钢生产中抑制剂的作用以及多元抑制剂的机理和应用情况,分析多元抑制剂方案中各种元素对高磁感取向硅钢性能的影响,并根据生产实践提出了进一步研究的方向. The role of an inhibitor in the production of grain oriented silicon steel,and the mechanism of multiplex inhibitor in the production are described in the present article.In addition,the influence of various elements in the multiplex inhibitor on the performance of grain oriented silicon steel with high magnetic induction is elucidated.Further work needed in this research is also indicated. 

研究了退火温度对3.1%Si无取向硅钢组织和磁性能的影响规律。结果表明:退火温度从940℃提高至1 000℃,平均晶粒尺寸由98μm增加到145μm,铁损P_1.5/50从2.576 W/kg降低至2.408W/kg。随着退火温度的升高,γ不利织构组分强度逐渐降低,{111}〈112〉织构组分强度降低约16%,磁感B₅₀逐渐升高,磁性能水平提高。 The effects of annealing temperature on microstructure and texture and magnetic properties of 3.1%Si non-oriented silicon steel were investigated in this paper.The results showed that,when the annealing temperature increased from 940℃ to 1 000℃,the average grain size of metallographic structure increased from 98μm to 145μm,the iron loss value P_1.5/50 decreased from2.576 W/kg to 2.408 W/kg.And as the annealing temperature increased,the strength of the unfavorable texture componentγgrad...