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» 粘合剂喷射

粘合剂喷射

1993
  • Ely Sachs
  • Michael Cima
在增材制造中使用粘合剂的粘合剂喷射机。.

(图片仅供参考)

Binder jetting is an additive 制造业 process where a liquid binding agent is selectively deposited onto a powder bed using an inkjet-style print head. The print head moves across a layer of powder, depositing binder droplets to join particles together. The build platform then lowers, a new layer of powder is spread, and the process repeats layer-by-layer.

The primary advantage of binder jetting is its speed and scalability, as the inkjet deposition process is typically faster than laser-based methods. It also operates at room temperature, which avoids the thermal stresses and warping common in high-temperature processes. This makes it suitable for a wide range of materials, including sand, metals, ceramics, and polymers. After printing, the part exists in a fragile ‘green state,’ held together only by the binder. It must be carefully excavated from the surrounding loose powder. For metal and ceramic parts, a crucial post-processing step is required to achieve final density and strength. This typically involves sintering in a furnace to burn out the binder and fuse the material particles, a process that causes significant and predictable shrinkage. Alternatively, the green part can be infiltrated with a lower-melting-point metal, such as bronze, to fill the pores and create a dense composite. A unique feature is the ability to incorporate color into the binder, allowing for the creation of full-color 3D models directly from the printer.

UNESCO Nomenclature: 3313
- 工业技术

类型

制造工艺

中断

重大的

用法

广泛使用

前体

  • 20 世纪 70 年代开发的喷墨打印技术
  • 粉末冶金法用于加工粉末材料
  • 用于创建数字蓝图的计算机辅助设计(CAD)
  • 铸造厂使用的传统砂型铸造技术
  • 专用化学粘合剂的开发

应用程序

  • 使用石膏粉制作的全彩原型和建筑模型
  • 工业铸造厂的大型砂型铸造模具和型芯
  • 通过后续烧结或渗透生产金属零件
  • 制造复杂的陶瓷部件
  • 高速、大规模零件生产

专利:

  • US 5204055 A

潜在创新理念

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Related to: binder jetting, 3dp, additive manufacturing, powder bed, inkjet, binder, green part, sintering, infiltration, sand casting.

历史背景

粘合剂喷射

1990
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1993
1994
1997
1998
1990
1990
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1992
1993-07-22
1996
1998
1999

(如果日期未知或不相关,例如“流体力学”,则提供其显著出现的近似估计)

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