Processing Custom Laser Cutting 304 316L Stainless Steel Capillary Tube Hollowing Slotting Punching Marking Sandblasting
Processing Custom Laser Cutting 304 316L Stainless Steel Capillary Tube Hollowing Slotting Punching Marking Sandblasting
Product Description
Custom Processing Service: Laser Cutting, Perforation, Slotting, Marking, and Sandblasting for 304/316L Stainless Steel Capillary Tubing is a comprehensive, multi-step precision manufacturing solution for creating highly intricate and functional micro-tubular components. This end-to-end service transforms standard capillary tubing into sophisticated parts featuring complex镂空 (openwork) patterns, precision slots, and drilled holes, all achieved through high-precision laser cutting. The process is completed with permanent laser marking for identification and a uniform sandblasted finish for aesthetics, cleanability, and surface preparation. Utilizing 304 or 316L stainless steel ensures durability and corrosion resistance, making the final products ideal for demanding applications in medical devices, filtration, micro-fluidics, and high-end instrumentation.
Product Processing
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Material Selection & Preparation: High-quality 304 or 316L stainless steel capillary tubing is selected based on corrosion resistance needs. The tubing is cut to specified lengths, cleaned, and straightened.
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CAD/CAM Programming & Fixturing: The customer's design for镂空patterns, slots, and holes is translated into precise laser cutting paths. The tube is securely fixtured in a CNC rotary laser cutting system to allow for 360-degree processing.
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High-Precision Laser Cutting/Perforation: A pulsed fiber laser performs all subtractive operations in a single setup:
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镂空 (Openwork): Cuts complex internal patterns, grids, or lattices within the tube wall.
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Slotting: Creates longitudinal, helical, or custom-shaped slots.
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Drilling: Produces precise round or shaped holes at specified locations.
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Post-Cut Cleaning & Deburring: Initial cleaning removes laser oxides (dross). A specialized micro-deburring process (e.g., electrochemical or abrasive flow) cleans the intricate internal edges of the cut features without damaging the delicate structure.
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Sandblasting (Bead Blasting): The entire component is uniformly sandblasted using fine media (e.g., glass beads). This achieves several goals: removes any residual thermal discoloration, creates a consistent matte/satin finish, provides a uniform surface for marking, and can lightly radius the sharpest laser-cut edges.
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Laser Marking: A fiber laser system applies permanent markings (text, logos, serial numbers, barcodes) directly onto the sandblasted surface. The laser parameters are optimized for contrast and durability on the textured finish.
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Final Cleaning, Passivation & Inspection: A final intensive cleaning removes all blasting media residue. A passivation treatment (per ASTM A967) is applied to restore the full corrosion resistance of the stainless steel, especially important for the newly exposed surfaces from cutting and blasting. Each part undergoes 100% visual and dimensional inspection.
Product Applications
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Advanced Medical Implants & Devices: Components for vascular stents (in R&D), bone ingrowth scaffolds, surgical instrument jaws with fluid channels, or sensor housings with ventilation slots.
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Micro-Fluidic & Lab-on-a-Chip Devices: Complex manifold structures, mixing elements, or filters integrated within a capillary format.
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Precision Filtration & Separation: Micro-sieves, porous frits, or diffusion elements with controlled pore size and pattern for gas/liquid filtration.
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Aerospace & Semiconductor: Lightweight structural micro-trusses, gas distribution diffusers with precise hole patterns, or shielding components with vented designs.
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Architectural & Decorative Micro-Elements: High-end decorative screens, jewelry components, or instrument details requiring intricate patterns and a premium finish.
Product Technical Parameters (Detailed Table)
| Category | Parameter | Specification / Details |
|---|---|---|
| Material | Grades | 304 Stainless Steel (General purpose). 316L Stainless Steel (For superior corrosion resistance & biocompatibility). |
| Condition | Annealed, suitable for精密激光加工. | |
| Base Capillary Tubing | Outer Diameter (OD) | 0.5 mm to 10.0 mm |
| Inner Diameter (ID) | 0.2 mm to 8.0 mm | |
| Wall Thickness | 0.15 mm to 1.5 mm | |
| Standard Length | Up to 300 mm (pre-cut, processing length machine-dependent). | |
| Laser Cutting/Perforation | Laser Type | Pulsed Fiber Laser (for high precision, minimal HAZ). |
| Minimum Feature Size | Slot/Hole Width: 0.05 mm (50 µm). Web/Strut Width: 0.08 mm (80 µm). | |
| Feature Positional Accuracy | ± 0.02 mm | |
| Openwork Complexity | True 2D镂空patterns limited only by web strength and laser access. | |
| Surface Treatment | Sandblasting Media | Glass Bead (Standard, for bright satin) or White Aluminum Oxide (for pure matte). |
| Surface Finish (After Blasting) | Uniform matte/satin. Ra 1.0 - 2.5 µm. | |
| Passivation | Yes, Standard. Per ASTM A967, Method for appropriate grade. | |
| Marking | Method | Fiber Laser Marking (Annealing or light engraving). |
| Marking Legibility | High contrast on blasted surface. Resistant to wear. | |
| Minimum Character Size | 0.2 mm height. | |
| Dimensional Tolerances | OD/ID (Base Tube) | ± 0.01 mm (Precision drawn tubing) |
| Cut Feature Size (Hole/Slot Width) | ± 0.01 mm | |
| Pattern Position Tolerance | ± 0.03 mm | |
| Overall Length (Post-Process) | ± 0.1 mm | |
| Quality & Cleanliness | Deburring Standard | All cut edges smooth under high magnification (e.g., 40x). No loose particulates. |
| Post-Process Cleanliness | Cleaned to meet ISO Class 7 particulate standards or customer specification. | |
| Inspection | 100% visual under microscope. Sample CMM or optical measurement for critical dimensions. | |
| Documentation | Certificate of Conformance (CoC), Dimensional Report for First Article, Material Certification (MTR), Passivation Report. |
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