增材制造技术体系与FDM/SLA技术定位 | Additive Manufacturing Technology System and Positioning of FDM/SLA
> 当你在社交媒体上看到精度堪比真实手办的3D打印模型，或是工业车间里用于装配验证的功能性原型时，你可能不会想到，这两类截然不同的产品背后，其实是增材制造技术体系中两条核心路线的分化——熔融沉积成型（Fused Deposition Modeling, FDM）与光固化立体成型（Stereolithography, SLA）。对于已经掌握基础3D打印操作的中级从业者而言，厘清两类技术的体系定位、优劣势边界与适用场景，是从“会打印”进阶到“会选型、会优化”的关键第一步。根据Wohlers Associates 2024年发布的《全球增材制造行业报告》，2023年全球增材制造市场规模达到180亿美元，其中FDM技术占比42%，SLA技术占比28%，两类技术合计占据了增材制造市场70%的份额，是当前应用最广泛、技术最成熟的两大主流路线[^1]。 When you see 3D-printed models with precision comparable to real figurines on social media, or functional prototypes used for assembly verification in industrial workshops, you may not realize that these two completely different products are the result of the differentiation of two core routes in the additive manufacturing technology system — Fused Deposition Modeling (FDM) and Stereolithography (SLA). For intermediate practitioners who have mastered basic 3D printing operations, clarifying the system positioning, advantage and disadvantage boundaries, and applicable scenarios of the two technologies is the first critical step to advance from "being able to print" to "being able to select and optimize". According to the 2024 Global Additive Manufacturing Industry Report released by Wohlers Associates, the global additive manufacturing market size reached 18 billion U.S. dollars in 2023, of which FDM technology accounted for 42% and SLA technology accounted for 28%. The two technologies together account for 70% of the additive manufacturing market, making them the two most widely used and mature mainstream routes at present[^1].
> ::: note 侧边栏：ISO/ASTM 52900标准核心定义 > 国际标准化组织（ISO）与 ASTM 国际于2015年联合发布的《增材制造通用原则》（ISO/ASTM 52900）是当前全球增材制造领域最权威的分类标准，该标准将增材制造工艺分为7大类： > 1. 材料挤出（Material Extrusion, ME）：通过加热喷嘴将材料挤出成型，代表工艺为FDM > 2. 光固化（Vat Photopolymerization, VP）：通过光敏树脂的光聚合反应成型，代表工艺为SLA、DLP、LCD光固化 > 3. 粉末床熔融（Powder Bed Fusion, PBF）：通过热源熔化粉末材料成型，代表工艺为SLS、SLM > 4. 定向能量沉积（Directed Energy Deposition, DED）：通过聚焦热源同步熔化与沉积材料成型，代表工艺为激光熔覆 > 5. 粘结剂喷射（Binder Jetting, BJ）：通过喷射粘结剂粘结粉末材料成型，代表工艺为砂型3D打印、金属粘结打印 > 6. 材料喷射（Material Jetting, MJ）：通过喷射光敏树脂或粘结剂成型，代表工艺为PolyJet > 7. 薄材叠层（Sheet Lamination, SL）：通过层叠薄材并切割成型，代表工艺为LOM > > *ISO/ASTM 52900:2015 Standard Terminology for Additive Manufacturing — General Principles — Part 1: Terminology* > > ::: note Sidebar: Core Definition of ISO/ASTM 52900 Standard > The *Standard Terminology for Additive Manufacturing — General Principles — Part 1: Terminology* (ISO/ASTM 52900:2015), jointly released by the International Organization for Standardization (ISO) and ASTM International in 2015, is the most authoritative classification standard in the global additive manufacturing field. The standard divides additive manufacturing processes into 7 categories: > 1. Material Extrusion (ME): Forming parts by extruding heated material through a nozzle, with FDM as the representative process > 2. Vat Photopolymerization (VP): Forming parts through the photopolymerization reaction of photopolymer resin, with SLA, DLP, and LCD photocuring as representative processes > 3. Powder Bed Fusion (PBF): Forming parts by melting powder materials with a heat source, with SLS and SLM as representative processes > 4. Directed Energy Deposition (DED): Forming parts by synchronously melting and depositing materials with a focused heat source, with laser cladding as the representative process > 5. Binder Jetting (BJ): Forming parts by spraying binder to bond powder materials, with sand 3D printing and metal binder printing as representative processes > 6. Material Jetting (MJ): Forming parts by spraying photopolymer resin or binder, with PolyJet as the representative process > 7. Sheet Lamination (SL): Forming parts by stacking and cutting thin materials, with LOM as the representative process
1.1 全球增材制造技术分类体系与FDM/SLA的体系定位
增材制造（Additive Manufacturing, AM）的核心定义是“通过逐层添加材料的方式制造三维实体，区别于传统减材制造（如CNC加工）和等材制造（如注塑成型）”的技术体系。根据ISO/ASTM 52900标准的分类框架，当前全球增材制造技术可分为上述7大类，其中材料挤出类与光固化类是当前商业化程度最高、应用场景最广的两类技术，FDM与SLA分别是这两类技术中商业化最早、技术最成熟的代表工艺。 从市场定位来看，增材制造设备通常可按价格区间划分为消费级与工业级两个梯队：消费级设备价格通常低于10万元人民币，面向个人爱好者、小型工作室、教育机构等用户群体，核心需求是低成本、易操作；工业级设备价格通常高于10万元人民币，面向制造业、医疗、航空航天等To B用户群体，核心需求是高精度、高稳定性、高
> 当你在社交媒体上看到精度堪比真实手办的3D打印模型，或是工业车间里用于装配验证的功能性原型时，你可能不会想到，这两类截然不同的产品背后，其实是增材制造技术体系中两条核心路线的分化——熔融沉积成型（Fused Deposition Modeling, FDM）与光固化立体成型（Stereolithography, SLA）。对于已经掌握基础3D打印操作的中级从业者而言，厘清两类技术的体系定位、优劣势边界与适用场景，是从“会打印”进阶到“会选型、会优化”的关键第一步。根据Wohlers Associates 2024年发布的《全球增材制造行业报告》，2023年全球增材制造市场规模达到180亿美元，其中FDM技术占比42%，SLA技术占比28%，两类技术合计占据了增材制造市场70%的份额，是当前应用最广泛、技术最成熟的两大主流路线[^1]。 When you see 3D-printed models with precision comparable to real figurines on social media, or functional prototypes used for assembly verification in industrial workshops, you may not realize that these two completely different products are the result of the differentiation of two core routes in the additive manufacturing technology system — Fused Deposition Modeling (FDM) and Stereolithography (SLA). For intermediate practitioners who have mastered basic 3D printing operations, clarifying the system positioning, advantage and disadvantage boundaries, and applicable scenarios of the two technologies is the first critical step to advance from "being able to print" to "being able to select and optimize". According to the 2024 Global Additive Manufacturing Industry Report released by Wohlers Associates, the global additive manufacturing market size reached 18 billion U.S. dollars in 2023, of which FDM technology accounted for 42% and SLA technology accounted for 28%. The two technologies together account for 70% of the additive manufacturing market, making them the two most widely used and mature mainstream routes at present[^1].
> ::: note 侧边栏：ISO/ASTM 52900标准核心定义 > 国际标准化组织（ISO）与 ASTM 国际于2015年联合发布的《增材制造通用原则》（ISO/ASTM 52900）是当前全球增材制造领域最权威的分类标准，该标准将增材制造工艺分为7大类： > 1. 材料挤出（Material Extrusion, ME）：通过加热喷嘴将材料挤出成型，代表工艺为FDM > 2. 光固化（Vat Photopolymerization, VP）：通过光敏树脂的光聚合反应成型，代表工艺为SLA、DLP、LCD光固化 > 3. 粉末床熔融（Powder Bed Fusion, PBF）：通过热源熔化粉末材料成型，代表工艺为SLS、SLM > 4. 定向能量沉积（Directed Energy Deposition, DED）：通过聚焦热源同步熔化与沉积材料成型，代表工艺为激光熔覆 > 5. 粘结剂喷射（Binder Jetting, BJ）：通过喷射粘结剂粘结粉末材料成型，代表工艺为砂型3D打印、金属粘结打印 > 6. 材料喷射（Material Jetting, MJ）：通过喷射光敏树脂或粘结剂成型，代表工艺为PolyJet > 7. 薄材叠层（Sheet Lamination, SL）：通过层叠薄材并切割成型，代表工艺为LOM > > *ISO/ASTM 52900:2015 Standard Terminology for Additive Manufacturing — General Principles — Part 1: Terminology* > > ::: note Sidebar: Core Definition of ISO/ASTM 52900 Standard > The *Standard Terminology for Additive Manufacturing — General Principles — Part 1: Terminology* (ISO/ASTM 52900:2015), jointly released by the International Organization for Standardization (ISO) and ASTM International in 2015, is the most authoritative classification standard in the global additive manufacturing field. The standard divides additive manufacturing processes into 7 categories: > 1. Material Extrusion (ME): Forming parts by extruding heated material through a nozzle, with FDM as the representative process > 2. Vat Photopolymerization (VP): Forming parts through the photopolymerization reaction of photopolymer resin, with SLA, DLP, and LCD photocuring as representative processes > 3. Powder Bed Fusion (PBF): Forming parts by melting powder materials with a heat source, with SLS and SLM as representative processes > 4. Directed Energy Deposition (DED): Forming parts by synchronously melting and depositing materials with a focused heat source, with laser cladding as the representative process > 5. Binder Jetting (BJ): Forming parts by spraying binder to bond powder materials, with sand 3D printing and metal binder printing as representative processes > 6. Material Jetting (MJ): Forming parts by spraying photopolymer resin or binder, with PolyJet as the representative process > 7. Sheet Lamination (SL): Forming parts by stacking and cutting thin materials, with LOM as the representative process
1.1 全球增材制造技术分类体系与FDM/SLA的体系定位
增材制造（Additive Manufacturing, AM）的核心定义是“通过逐层添加材料的方式制造三维实体，区别于传统减材制造（如CNC加工）和等材制造（如注塑成型）”的技术体系。根据ISO/ASTM 52900标准的分类框架，当前全球增材制造技术可分为上述7大类，其中材料挤出类与光固化