使用弹性体和钢制工具对Hastelloy X合金板的塑料成型过程进行数值和实验研究
Krzysztof Żaba1, Maciej Balcerzak1, Tomasz Trzepieciński2
1Department of Metal Working and Physical Metallurgy of Non-Ferrous Metals, Faculty of Non-Ferrous Metals, AGH University of Krakow, al. Adama Mickiewicza 30, 30-059 Cracow, Poland.
Materials (Basel, Switzerland)
|November 27, 2024
概括
弹性体冲孔的硬度显著影响了形成的哈斯泰洛伊X板的质量. 这项研究使用实验和数值方法来分析塑料成型,发现需要仔细设计工具的不均变形.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 制造过程 制造过程 制造过程
背景情况:
- 基于的合金Hastelloy X,由于其性能,很难形成.
- 塑料成型板金属需要精确控制工具和工艺参数.
- 弹性体冲孔为金属成型中的传统工具提供了潜在的替代方案.
研究的目的:
- 为了研究1毫米厚的Hastelloy X板材的塑料成型,使用层叠的弹性体冲孔和钢模.
- 分析弹性体冲孔硬度对成型零件几何质量的影响.
- 用实验结果验证Hastelloy X成形过程中的数值模型.
主要方法:
- 实验性塑料成型使用层级弹性体冲孔 (50-90 Shore A) 和钢模 (90MnCrV8,>60 HRC) 基于格林方法.
- 形成过程的基于有限元素的数值建模,具有不同的聚氨插件配置.
- 光学3D扫描用于对成型的画件进行几何测试.
主要成果:
- 实验和数值结果显示出很好的一致性.
- 聚氨插件的硬度极大地影响了形成的Hastelloy X板的几何质量.
- 在成型过程中观察到显著的不均的金属板变形.
结论:
- 弹性体穿孔硬度是实现Hastelloy X板材成型所需的几何质量的关键因素.
- 观察到的不均变形对设计成型工具和优化Hastelloy X.塑料成型技术提出了挑战.
- 为了高效的Hastelloy X塑料成型,需要进一步研究工具设计和流程优化.
相关概念视频
Members Made of Elastoplastic Material
93
The behavior of elastoplastic materials under bending stresses, particularly in structural members with rectangular cross-sections, is crucial for predicting material responses and understanding failure modes. Initially, when a bending moment is applied, the stress distribution across the section follows Hooke's Law and is linear and elastic. This distribution means the stress increases from the neutral axis to the maximum at the outer fibers, up to the elastic limit.
As the bending moment...
As the bending moment...
93
Plastic Behavior
189
A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
189
Mechanical Characteristics of Steel
398
The mechanical characteristics of steel are assessed through various tests that evaluate its strength, toughness, and flexibility. These tests include tension, torsion, impact, bending, and hardness assessments, each providing crucial information about steel's suitability for specific applications.
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
The tension test is fundamental for determining tensile strength. In this test, a steel specimen is stretched using a gripping device until it breaks. The data collected during this test are used...
398
Residual Stresses
207
Residual stresses reside in a structure even after removing the original stress inducer. This phenomenon often arises from varied plastic deformations across different parts of a structure. Consider a rod stretched beyond its yield point. It will not regain its original length due to permanent deformation. Even after load removal, the rod does not entirely lose stress because of uneven plastic deformations, resulting in residual stresses. The computation of these stresses in structures is...
207
Stress-Strain Diagram - Ductile Materials
628
The stress-strain relationship in ductile materials such as structural steel or aluminium is intricate and progresses through several stages. When a specimen is loaded, it initially exhibits a linear length increase, depicted by a steep straight line on the stress-strain diagram. It indicates the material is elastically deforming and will return to its original shape once unloaded. However, when a critical stress value is reached, plastic deformation begins. This stage sees substantial...
628
Hooke's Law
347
Hooke's law, a pivotal principle in material science, establishes that the strain a material undergoes is directly proportional to the applied stress, defined by a factor called the modulus of elasticity or Young's modulus.
347


