Product Design, Manufacturing & Innovation Resources
家 » 选择性激光烧结(SLS)

选择性激光烧结(SLS)

1986
  • Carl Deckard
  • Joe Beaman
增材制造工厂中的选择性激光烧结机。

(图片仅供参考)

Selective Laser Sintering is a powder bed fusion additive manufacturing 该工艺利用高功率激光选择性地烧结或熔化聚合物粉末颗粒。滚轮将一层薄薄的粉末铺展在成型区域,激光扫描零件的横截面,然后成型平台下降。这个过程不断重复,逐层构建物体。

A key advantage of SLS is that the unsintered powder in the build chamber acts as a natural support for the part being printed. This eliminates the need for separate support structures that must be removed in post-processing, allowing for the creation of highly complex, free-form geometries, including parts-within-parts or interlocking mechanisms printed in a single run. The process takes place in a tightly controlled chamber, heated to just below the polymer’s melting point, which helps to reduce thermal distortion and improve layer fusion. After the build is complete, the entire powder bed and the embedded parts must cool down slowly to prevent warping. The parts are then excavated from the powder bed in a ‘breakout’ process. Unused powder can be collected, sieved, and mixed with fresh powder for subsequent builds, making the process relatively material-efficient. The most common materials are nylons, such as PA11 and PA12, prized for their good mechanical properties. The resulting parts typically have a slightly grainy surface finish but are strong and functional.

UNESCO Nomenclature: 3313
– Industrial technology

类型

Manufacturing Process

中断

重大的

用法

广泛使用

前体

  • 粉末冶金,用金属粉末制造物体的实践
  • 高功率二氧化碳激光器的发明和商业化
  • computer numerical control 用于精确运动控制的(数控)系统
  • advances in thermodynamics and heat transfer for 过程控制
  • 用于数字模型创建的计算机辅助设计(CAD)软件

应用程序

  • 具有强大机械性能的功能原型
  • 复杂的几何形状和互锁部件,无需专用支撑结构
  • 最终用途零件的低至中批量生产
  • 医疗器械 组件和骨科植入物
  • 航空航天和汽车管道及部件
  • 定制消费品

专利:

  • US 4863538 A

潜在创新理念

  • 打造定制时尚单品,例如精致的鞋子和服装
  • 生产用于航空航天部件的轻质、复杂的晶格结构
  • 制造个性化运动器材握把和护具
  • 按需生产复杂的汽车内饰件
  • 制造灵活、耐用的机器人部件
  • 打印金属铸造用砂模和砂芯
  • 创建具有复杂内部特征的详细建筑模型
  • 生产具有多孔结构的生物相容性植入物,用于骨整合
  • 开发具有渐变材料特性的多材料 SL
  • 利用风化层粉末在太空中制造工具和零件
Related to: selective laser sintering, sls, powder bed fusion, laser sintering, polymer powder, additive manufacturing, carl deckard, nylon, rapid prototyping, support-free.

历史背景

选择性激光烧结(SLS)

1980
1984
1986
1986
1987-03
1990
1990
1980
1981
1986
1986
1987
1989
1990
1990

(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)

第十年 周年纪念日

只有注册会员才能免费获取完整尺寸的图片和下载内容。

> 登录 <