| 1. | Analysis of tendency of ductile fracture at corner of workpiece during grooveless rolling 无槽轧制轧件角部的韧性断裂趋势分析 |
| 2. | Abstract : determining nip point is important for steady rolling section steel 文摘:确定型钢轧制时轧件的咬入点对实现稳定轧制有重要意义。 |
| 3. | Theoretical direction may be provided on judging defect of rolling workpiece surface 从而为估测楔横轧成形阶梯轴类件时轧件表面是否会产生缺陷提供理论指导。 |
| 4. | It is indicated that three - roll cross wedge rolling process has a distinct advantage in the forming quality of the center of rolled pieces 分析表明,三辊楔横轧轧制工艺在轧件心部成形质量上具有明显的优势。 |
| 5. | Based on analyzing the intersection curve between the rolled - piece and roll , the method of determining the nip point is put forward 基于对轧件与轧辊截交线的分析,提出了在二维直角坐标系中确定轧件咬入接触点的方法。 |
| 6. | The necessary condition has been obtained on forming rolling workpiece surface defect by means of upper - bound method and least energy principle 以此为基础,并借助于上限原理和最小能量原理,获得了楔横轧成形阶梯轴时轧件表面缺陷形成的必要条件。 |
| 7. | After an actual rolling process of 2050 mill was simulated by using the model , evolution laws of strain field , temperature field and microstructure were analyzed 运用该模型对2050现场实际轧制过程进行模拟计算,分析了轧制过程轧件变形场、温度场及显微组织的演变规律。 |
| 8. | The occurrence probability and existence form of internal defects in rolled pieces during three - roll and two - roll cross wedge rolling were compared and analyzed by finite element numerical simulation 摘要采用有限元数值模拟方法,比较分析了三辊楔横轧与两辊楔横轧轧件内部缺陷的产生几率和存在形式。 |
| 9. | The reason that the internal defects little occur at the center points and fissure takes an annular form during three - roll rolling was expounded based on the state of stress and strain at the center of rolled pieces 根据轧件内部的应力应变状态,阐述了三辊轧制轧件中心点缺陷产生可能性较小和断裂呈环向裂纹的原因。 |
| 10. | The research of the influence of gap setting precision on finishing plate size precision shows that the sensibility of finishing size precision to gap setting precision of the first several passes is low 摘要分析中厚板轧制过程不同道次辊缝设定精度对轧件终轧尺寸精度的影响,证明了轧件终轧尺寸精度对前面道次的辊缝设定精度不敏感。 |