Stereolithography(SLA)
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3D Printing Services
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Product Description
Stereolithography (SLA) 3D Printing Service | Fuzhou Jiahexing Machinery Co., Ltd.
Detailed Explanation of SLA Process Principle
Laser Photopolymerization Process
- 405nm ultraviolet laser beam (spot diameter 70μm) scans liquid photosensitive resin layer by layer
- Laser energy density precisely controlled at 8-15mJ/cm²
- Curing thickness per layer 20-100μm (adjustable)
Precision Motion System
- Galvanometer scanning accuracy ±5μm
- Z-axis repeat positioning accuracy ±1μm
- Maximum scanning speed 12m/s
Material Curing Characteristics
- Dual-cure polymerization reaction (acrylate/epoxy system)
- Curing shrinkage rate 0.3-0.6%
- Post-curing energy requirement 300-500mJ/cm²
Technical Parameter Comparison Table
Key Parameters | Standard SLA | Industrial-grade SLA | Micron-level SLA |
| Build Size (mm) | 600×600×400 | 800×800×500 | 200×200×150 |
| Layer Thickness Resolution (μm) | 25-100 | 10-50 | 5-20 |
| Minimum Feature Size (μm) | 150 | 80 | 25 |
| Surface Roughness (Ra) | 1.6μm | 0.8μm | 0.4μm |
| Laser Power (mW) | 300 | 500 | 200 (high-frequency focusing) |
| Build Speed (cm³/h) | 80-120 | 50-80 | 20-40 |
Material System Technical Details
Standard Resin Materials
- ABS-type Resin
- Tensile Strength: 50-65MPa
- Elongation at Break: 8-12%
- HDT: 55-65℃
- Transparent Resin
- Light Transmittance: 92%@500nm
- Refractive Index: 1.52
- Yellowing Index: <1.5 (1000h UV)
Engineering-grade Materials
- High-temperature Resistant Resin
- Long-term Use Temperature: 180-220℃
- Heat Deflection Temperature: 280℃ (0.45MPa)
- Flexible Resin
- Shore Hardness: 30A-85A
- Resilience: >90%
Specialty Materials
- Biocompatible Resin
- Complies with ISO 10993-5 Cytotoxicity Standard
- Sterilization Methods: EO/γ-ray
- Ceramic-filled Resin
- Alumina Content: 40-60 vol%
- Sintering Shrinkage Rate: 15±2%
Post-processing Workflow
Basic Treatment
- Isopropanol Ultrasonic Cleaning (40kHz/5-10min)
- Secondary Curing (395nm LED/30-60min)
- Support Structure Removal (special fixture)
Precision Machining
- Micron-level Polishing (sandpaper grit 2000-5000#)
- Chemical Polishing (dichloromethane vapor treatment)
- Vacuum Coating (Al₂O₃/TiO₂)
Quality Inspection
- Blue Light 3D Scanning (accuracy ±5μm)
- Micro CT Inspection (minimum defect detection 10μm)
- Mechanical Performance Testing (ASTM D638/D790)
Typical Application Cases
Precision Casting
- Investment Casting Shell (wall thickness 0.3mm)
- Casting Dimensional Accuracy: CT6 Grade
Medical Field
- Surgical Guide (registration error <0.2mm)
- Dental Implant Model
Optical Devices
- Freeform Lens (surface accuracy λ/4)
- Microfluidic chip (channel width 50μm)
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Fuzhou Jiahexing Machinery Co., Ltd.
Tel:+86-18350057156
Email:sam@fzjhx.com
Address: No. 305, Xinqiao Wai, Qingpu Tuanjie Village, Qingkou Town, Minhou County, Fuzhou City, Fujian Province
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