参数优化和精确控制可溶于水的支芯,用于由泥微挤出直接成型方法制造的空心复合件
Jiefei Huang1, Fuchu Liu1,2,3, Yingpeng Mu1
1School of Mechanical Engineering and Electronic Information, China University of Geosciences, Wuhan, China.
3D printing and additive manufacturing
|January 1, 2025
概括
优化泥成分和微挤出参数可以提高直接成型. 该研究确定了最佳的硫酸单水合物 (MgSO4) 和聚烯 (PVP) 的比例和打印条件,以提高尺寸精度.
科学领域:
- 材料科学与工程 材料科学与工程
- 增材制造 增材制造 增材制造
- 化学工程是化学工程的重要组成部分.
背景情况:
- 泥微挤出直接成型是一种有前途的增材制造技术.
- 优化泥特性和工艺参数对于实现高质量的零件至关重要.
- 硫酸单水合物 (MgSO4) 和聚烯 (PVP) 是泥制备的关键组成部分.
研究的目的:
- 为了确定MgSO4和PVP的最佳组成,用于泥制备.
- 为了确定微挤出直接成型的理想成型工艺参数.
- 评估优化参数对样品表面粗度和尺寸精度的影响.
主要方法:
- 用不同的成分比率制备MgSO4-PVP泥.
- 使用直角实验设计来研究印刷速度,挤压压力和层高度的影响.
- 印刷样本的表面粗度和尺寸偏差的表征.
主要成果:
- 最佳的泥成分包括64%的MgSO4和36%的PVP-EtOH粘合剂.
- 优化的打印参数包括850mm/min的速度,250kPa的挤压压力和510μm的层高度比.
- 优化的工艺导致表面粗度为23.764微米,尺寸偏差为0.71% (X),0.77% (Y) 和2.56% (Z).
结论:
- 该研究成功优化了泥含量和微挤出过程参数.
- 在使用MgSO4和PVP基泥的直接成型中实现了高精度和准确性.
- 这些发现为推进基于泥的增材制造技术提供了宝贵的见解.
相关概念视频
Production of Formed Elements
Hemangioblasts are multipotent stem cells originating from the mesoderm. They give rise to hematopoietic stem cells (HSCs), which undergo hematopoiesis to produce all the formed elements of blood. This process is regulated by a complex network of hematopoietic growth factors, including transcription factors, growth factors, and cytokines. These factors stimulate the HSCs to divide and differentiate, though some HSCs remain undifferentiated to maintain a self-renewing pool.
Most HSCs commit to...
Most HSCs commit to...
Accelerated Curing of Concrete
Accelerating concrete curing is achieved by applying heat and additional moisture. This process accelerates the hydration of the cement, resulting in an earlier strength gain in the concrete. Steam curing is a method wherein the concrete products are either transported through a chamber on a conveyor belt or encased in plastic, allowing steam at atmospheric pressure to circulate freely around them. This process begins with a phase of moist curing that typically lasts between 3 to 5 hours, after...
Superplasticizers
Superplasticizers are advanced admixtures that enhance the workability of concrete by lowering the water content without compromising the strength of the material. These substances are highly effective water reducers, improving concrete flow, making it easier to work with, and enabling concrete to reach inaccessible areas or densely reinforced sections without mechanical vibration. The key components in superplasticizers are either sulfonated melamine or naphthalene formaldehyde condensates,...
Design Example: Managing Concrete Workability
This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
To address...
To address...


