Perfect for functional testing, rapid prototyping, high-heat applications and chemically-resistant parts.

激光烧结椅 (SLS)

With Selective Laser Sintering (SLS) printers from 3D Systems, you can conduct rapid prototyping and create high-resolution nylon parts up to seven times faster than with competing SLS 3D printers. You can also trust our line of SLS printers to reduce production costs, streamline the testing process and cut material waste.

What is Selective Laser Sintering?

SLS 技术使用激光硬化并将小颗粒的尼龙和弹性体材料粘合成 3D 尺寸结构的层。激光跟踪 3D 设计每个横截面的模型,并将其复制到粉末床上。构建完一层后,粉末床随之下降,并在现有层之上开始构建另一层。粉末床继续下降直到构建完所有层,才真正完成零件。

SLS 打印有哪些优点?

无需支撑物

SLS 的一个主要优点是不需要许多其他 3D 打印技术用于防止设计作品在生产过程中发生倒塌所使用的支撑结构。由于产品位于粉末床中,因此不需要支撑物,从而节省材料成本并且允许更快的 3D 零件生产。

Build complex 3D parts faster and more affordably

SLS 3D printing enables the creation of consolidated parts that would have required assembly processes using traditional manufacturing, thus saving time and money in production.  With SLS, users can create geometries that no other technology can including living hinges and moving parts—all while conserving materials and saving time on assembly.

降低零件损坏的风险

In addition, the SLS process eliminates the risk of part damage as the supports are removed, meaning we can build complex interior components and complete parts. As with other 3D printing technologies, there’s no need to account for tool clearance or draft angles. 

享受大幅节省时间和成本的优点

对于常需要经过传统制造装配的小批量零件,依靠 SLS 打印流程的坚固耐用性及其生产复杂完整 3D 零件的能力,可以节省大量时间和成本。SLS 实现了功能、强度和复杂度的完美结合。我们能够以更快的速度来生产零件,同时缩短装配所需的时间。

创造真正坚固的零件

SLS 材料通常可以更耐磨和更好地适应环境条件。尤其是对于大量定制的小体积最终用途零件,SLS 摆脱了传统制造方法面临的昂贵又低效的换模过程。

Easily reproduce parts and press tools

Another big benefit of additive manufacturing with SLS is the ability to store and reproduce parts and dies as 3D CAD data that will never corrode, get lost in transportation or require expensive storage. The designs are always available and ready to be produced when we need them, even if the original is unavailable.

What materials can be used in SLS printers?

SLS 打印使用一系列尼龙材料(与 SLS 金属打印技术一起)完成。这些 3D 打印材料不同于传统的注塑材料,因为它们更先进并且由直径 < 100 纳米的超细颗粒组成。这些令人难以置信的小颗粒 3D 打印材料是通过称为球磨的工艺产生的。

In ball milling, a machine is used to grind and blend materials via high impact. In other words, balls of the desired SLS materials are dropped from the top of the machine’s grinding cylinder so that they hit the bottom with enough force to erode the material down to the desired size. The benefit of this process is that rather than being poured into a mold, ball milled SLS materials can be bonded together.

Once the ball milling process is complete, the materials are ready for use in SLS printers.

Metals

Styrene-based materials are great for making castings in plaster, titanium, aluminum and more, and are compatible with most standard foundry processes.

尼龙

使用 SLS 尼龙和其他 SLS 材料,您可以为各种应用创建坚固耐用的零件。无论您是将零件构建为快速原型制造过程的一部分、创建模板还是将 3D 打印用于其他目的,3D Systems 都拥有适合您项目的材料类型。使用下表了解选择性激光烧结过程中可用的不同材料选项。

机械属性 抗张强度 拉伸模量 断裂时的抗张伸展率 挠曲模量 缺口 Izod
冲击强度
热变形温度
@66psi
硬度 熔点
测试方法 ASTM D638 ASTM D638 ASTM D638 ASTM D790 ASTM D256 ASTM D648 ASTM D2240 DSC
单位 psi psi % psi ft-lb)/in ºF 邵氏 D 型硬度 ºF
尼龙
(DuraForm® PA)
6,237 230,000 14% 201,000 0.6 356 73  
玻璃填充的尼龙 (DuraForm® GF)  3,771 590,000 1.4% 450,000 0.8 354 77  
耐用尼龙
(DuraForm® EX) 
5,366 220,000 47% 190,000 1.2 370    
Fiber-filled Nylon
(DuraForm® HST) 
7,050–7,350
(XY)

421000–

434,000

4.5% (XY)

381000–

410,000

0.7 354 75  

 

 

SLS also can create impact-resistant engineering plastic that’s great for low- to mid-volume end-use parts, such as:

  • Enclosures
  • 卡扣连接零件
  • Automotive moldings
  • 薄壁管道

Engineering parts can also be made with:

  • Flame-retardant material to fit aircraft and consumer product requirements
  • Gas-filled material for greater stiffness and heat resistance
  • 具有极高刚度的纤维增强塑料
  • 用于柔性零件(如软管、垫圈、手柄衬垫等)的类橡胶材料

What finish options are available with SLS 3D printing?

SLS 3D 塑料打印可以使用各种表面处理完成 3D 零件。3D Systems 的 SLS 机床提供业界最佳的表面处理,为您提供高质量的零件,非常适合快速原型制造、母模、最终用途生产,机床工具等。使用下表查看我们的各种增材制造表面处理,并确定最适合您项目的表面处理工艺。

表面光滑度类型 说明
标准无涂层

Loose powder removed and bead blast

Standard Coated

Loose powder removed, bead blast and apply sealant

底漆

去除散落的粉末,喷砂,涂抹密封剂,依次使用 80 粒度砂纸和 150 粒度砂纸打磨以除去任何不需要的碎屑,喷涂底漆,使用 220 粒度砂纸打磨,继续涂底漆,然后使用 320 粒度砂纸抛光

已绘制

底漆抛光附加喷漆

Dyed

Standard uncoated finish with dye

 

What applications are ideal for using the SLS printing process?

SLS really shines when you need 3D plastic parts that will last. While parts created by other additive manufacturing methods may become brittle over time, SLS 3D printers are capable of producing highly durable parts for real-world 3D prototyping and mold making. And because SLS parts are so robust, they rival those produced in traditional manufacturing methods and are already used in a variety of end-use applications, such as:

  • Highly durable production parts for real-world testing and highly complex geometries
  • Parts that are durable and can withstand high-heat and chemically rich applications
  • 部件具有高抗冲击性,可满足严苛的使用要求
  • Parts with snap fits/living hinges
  • 汽车设计
  • Aerospace parts and ducting
  • Medical applications
  • 夹具、固定装置和工具
  • 阻燃零件
  • Investment casting patterns
  • 垫片、密封垫和软管
  • 小批量生产解决方案和大型建模平台

哪些行业使用 SLS 打印机?

无论您是希望实现快速制造、快速原型制造还是模具和模型,SLS 工艺和我们的 SLS 3D 打印机都非常适合为各种行业应用创建耐用的塑料零件。

快速制造

  • 航天装备
  • UAS – 无人机系统装备
  • UAV – 无人机装备
  • UUV – 无人驾驶地下车辆装备
  • UGV – 无人驾驶地面车辆装备
  • 健康医疗
  • 电子产品、包装、接头
  • 国土安全
  • 军事装备

快速原型

  • 功能概念验证原型
  • 设计评估模型(形状、匹配和功能)
  • 产品性能和测试
  • 工程设计验证
  • 风洞测试模型

模具和模型

  • 模具和制造评估视觉辅助
  • 熔模铸造模型
  • 夹具和固定装置

 

SLS 有哪些设计原则?

Since SLS printing allows you to achieve rapid prototyping, you can simply and affordably verify your designs without wasting a lot of time. We suggest leveraging this benefit as often as you can to maximize the performance of the final part.

 

Some key guidelines you’ll want to follow as you analyze and optimize your SLS printed parts:

  • 最小壁厚为 0.040 英寸(1.0毫米)
  • 理想情况下,壁厚应不超过 0.120 英寸(3.0毫米),以最大限度地减小大块材料中孔的箍收缩
  • A radius fillet of 0.015 inches (0.4 mm) on all interior corners for stress relief

创建具有底部切削、内部特征和负拔模的零件时,不需要特殊的设计原则。

标准分辨率公差:

  • X/Y planes: +/- .005” for the first inch, plus +/- .005” for every inch thereafter
  • Z plane: +/- .010” for the first inch, plus +/- .005” for every inch thereafter

Want to see how SLS can greatly improve the rapid prototyping process?

下载我们的 SLS 设计指南 >

查看有关 3D Systems 的 SLS 3D 打印机的详细信息和规格 >

See case studies about 3D printing customers and applications >