Online CNC machining service
We specialize in delivering a comprehensive range of CNC machining services tailored to meet application requirements across diverse industries.
Core services include: CNC machining, CNC turning and milling operations, sheet metal fabrication, mold manufacturing, stamping, casting, 3D printing , polishing, anodizing, coating, electroplating, laser cutting, and LOGO printing.
CNC milling service
CNC milling (Computer Numerical Control milling) is a subtractive manufacturing process that uses computer-programmed cutting tools to remove material from a workpiece, typically made
of metal, plastic, wood, or composite materials, to create precise and complex three-dimensional parts.
Source custom parts with our CNC milling services provided by our network of specialized manufacturers. Source custom CNC milling parts using more than 50 different metals and plastics, available in more than 15 surface finishes. Tolerances down to ±.0008"
CNC Turning service
CNC turning is a subtractive manufacturing process used to create rotationally symmetric parts by removing material from a workpiece that spins on a lathe. Guided by computer numerical control (CNC), this process is ideal for producing cylindrical, conical, or threaded components with high precision.
Capabilities: Materials: Works with metals (aluminum, steel, titanium), plastics, composites, and more. Complexity: Can produce intricate geometries, such as slots, holes, curves, threads, and even highly detailed prototypes or end-use parts. Precision: Offers tight tolerances (often ±0.01 mm or better), making it ideal for high-precision industries like aerospace, automotive, medical devices, and electronics.
Sheet Metal Fabrication
Definition ：Sheet metal fabrication is a manufacturing process that transforms flat sheets of metal (ranging from 0.5mm to 6mm thick) into functional components through cutting, bending, and assembling. It involves precision techniques to create parts used in diverse industries, leveraging metals’ malleability and strength.
Sheet Metal Fabrication: Comprehensive Description
Key processes include:
1.Core Processes
Cutting: Laser cutting, waterjet cutting, or punching machines slice metal sheets into desired shapes with high accuracy (tolerances down to ±0.1mm).
Bending: Press brakes apply force to bend metal along pre-defined lines, forming angles typically between 30° and 180°.
Welding & Assembly: Welding methods like MIG, TIG, or spot welding join multiple metal pieces, while fasteners or rivets can also secure components.
Forming: Processes such as stamping, rolling, or deep drawing shape metal through compression or stretching.
2. Materials Used
Steel: Carbon steel (cost-effective, high strength) and stainless steel (corrosion-resistant, used in food and medical equipment).
Aluminum: Lightweight, excellent corrosion resistance, ideal for aerospace, automotive, and electronics.
Copper & Brass: High electrical conductivity, used in electrical components and decorative parts.
Galvanized Steel: Coated with zinc for enhanced corrosion protection, common in outdoor structures.
3. Equipment & Technology
CNC Press Brakes: Computer-controlled machines ensure consistent bending angles and lengths, reducing human error.
Laser Cutters: Use high-energy laser beams to cut intricate patterns with minimal material waste and burrs.
Punch Presses: Rapidly create holes, slots, and shapes by stamping metal sheets with custom dies.
Robotic Welding Systems: Automate welding tasks for precision and repeatability, especially in high-volume production.
4. Advantages
Design Flexibility: Easily customized to meet specific requirements, from simple enclosures to complex structural parts.
Cost-Effective: Economical for both low-volume prototyping and high-volume production, especially with automated processes.
Strength & Durability: Metal’s inherent properties ensure parts can withstand heavy loads, harsh environments, and prolonged use.
Quick Turnaround: Modern CNC technology shortens production lead times, enabling rapid prototyping and fast delivery.
5. Surface Finishing Options
Painting & Powder Coating: Apply protective and decorative layers, enhancing corrosion resistance and aesthetics.
Anodizing: Used on aluminum parts to create a durable oxide layer, improving wear resistance and appearance.
Plating: Electroplating or electroless plating adds metallic coatings (e.g., zinc, nickel) for corrosion protection and conductivity.
Passivation: Chemical treatment on stainless steel forms a passive layer, preventing oxidation.
3D Printing
3D printed parts refer to physical components or products created through additive manufacturing technology, which transforms digital 3D models into tangible objects. Unlike traditional subtractive manufacturing (e.g., cutting, milling), 3D printing constructs objects by layering materials (such as plastics, metals, ceramics, etc.) sequentially, enabling direct fabrication from digital designs to physical entities.
3D Printed Parts: Comprehensive Description
1. Core Characteristics of 3D Printed Parts
3D printing, or additive manufacturing, constructs parts layer-by-layer from digital models, offering unique advantages over traditional subtractive machining:
Design Freedom: Enables complex geometries impossible with CNC (e.g., lattice structures, internal channels, interlocking components).
Material Versatility: Works with plastics (ABS, PLA, PEEK), metals (titanium, stainless steel, aluminum), ceramics, composites, and even biological materials.
Rapid Prototyping: Reduces lead time from weeks to hours for concept validation.
Customization: Cost-effectively produces one-off or low-volume parts with unique specifications.
2. Common 3D Printing Technologies for Parts
TechnologyProcessMaterial ExamplesPart CharacteristicsFDM (Fused Deposition Modeling)Melts filament and extrudes it layer-by-layer.PLA, ABS, PETG, PEEKCost-effective, suitable for prototypes; rough surface finish.
SLA (Stereolithography)Uses UV light to cure liquid resin.Photopolymer resins (acrylic, epoxy)High precision (±0.05 mm), smooth surface; brittle.
SLS (Selective Laser Sintering)Fuses powdered materials with a laser.Nylon, polycarbonate, metal powdersStrong, durable parts; minimal support structures.
MJF (Multi-Jet Fusion)Jets binding agents onto powder beds, cured by heat.Nylon, TPU (thermoplastic polyurethane)Uniform mechanical properties, ideal for functional parts.
Binder JettingDeposits binder on metal/ceramic powder, followed by sintering.Stainless steel, aluminum, sandCost-efficient for large parts; post-processing needed.
DMLS (Direct Metal Laser Sintering)Fuses metal powder layer-by-layer with a high-power laser.Titanium, Inconel, aluminum alloysHigh-strength metal parts for aerospace/medical.
3. Material Properties of 3D Printed Parts
Plastic Parts:
Lightweight, corrosion-resistant, and suitable for prototypes (e.g., ABS for automotive mock-ups, PEEK for high-temperature medical devices).
Metal Parts:
Equivalent to forged metals in strength (e.g., Ti-6Al-4V titanium parts for aircraft), with porosity <1% in high-end systems.
Composite Parts:
Carbon fiber-reinforced nylon for lightweight, high-stiffness components (e.g., drone frames).
4. Surface Finish & Post-Processing
As-Printed Finish:
Rough (FDM), slightly textured (SLS), or smooth (SLA), depending on technology.
Post-Processing Options:
Smoothing: Chemical vapor polishing (e.g., acetone for ABS), sandblasting, or electroplating.
Strengthening: Hot isostatic pressing (HIP) for metal parts, annealing for plastics.
Coating: Paint, anodizing, or PVD (physical vapor deposition) for aesthetics or corrosion resistance.
5. Applications of 3D Printed Parts
IndustryExamplesValue PropositionAerospaceEngine brackets, fuel nozzles, satellite componentsWeight reduction (lattice structures) and part consolidation (fewer assemblies).
MedicalCustom implants (skull plates), surgical guides, prostheticsPatient-specific designs via CT/MRI data integration.
Automotive/EVEngine covers, battery brackets, custom interior partsRapid iteration for EV prototypes and low-volume production of performance parts.
Consumer ProductsCustom phone cases, jewelry, household toolsMass customization at low cost.
ManufacturingJigs, fixtures, low-volume production partsReduces tooling costs for short-run manufacturing.
Education & ResearchAcademic prototypes, scientific models (e.g., anatomical replicas)Enables hands-on learning and rapid concept testing.
6. Key Advantages Over Traditional Manufacturing
Design Flexibility: Creates hollow, organic, or interlocking shapes impossible with CNC.
Reduced Waste: Uses only the material needed, unlike subtractive machining (up to 90% material savings for complex parts).
Supply Chain Agility: On-demand production eliminates inventory needs (e.g., spare parts printed on-site).
Cost Efficiency for Low Volumes: Economical for 1–1,000 units, where traditional tooling is expensive.
7. Limitations & Considerations
Mechanical Anisotropy: Parts may have varying strength along different axes (e.g., FDM parts stronger in X-Y than Z).
Surface Finish Constraints: As-printed surfaces may require post-processing for high aesthetics.
Production Speed: Slower than injection molding for high-volume parts (e.g., 10,000+ units).
Material Costs: Specialty metals (e.g., Inconel) for 3D printing can be expensive.
8. Quality & Certification
Standards:
Aerospace parts often comply with ASTM F3055 (metal AM) or ISO 17296 (medical implants).
Inspection Methods:
CT scanning for internal defects, tensile testing for mechanical validation, and CMM for dimensional accuracy.
Surface Treatments for Mechanical Parts
Surface Treatments for Mechanical Parts
1. Anodizing
Electrochemical process forming a protective oxide layer on metals (e.g., aluminum), enhancing corrosion resistance and aesthetic appeal.
2. Plating
Depositing metallic layers (e.g., chrome, nickel, zinc) via electroplating or electroless plating to improve durability, conductivity, or appearance.
Subtypes: Zinc plating (galvanizing), nickel-chrome plating, gold plating.
3. Powder Coating
Applying dry powder paint electrostatically, then curing it to form a durable, corrosion-resistant finish on metals.
4. Passivation
Chemical treatment (e.g., nitric acid) to form a passive oxide layer on stainless steel, enhancing corrosion resistance.
5. Heat Treatment (Surface Hardening)
Processes like carburizing, nitriding, or induction hardening to increase surface hardness while maintaining core ductility.
6. Polishing
Abrasive finishing to achieve a smooth, reflective surface on metals or plastics, improving aesthetics or reducing friction.
7. Electropolishing
Electrochemical process removing material to smooth surfaces, reduce corrosion, and enhance cleanliness (common in medical devices).
8. Shot Peening
Blasting parts with small pellets to induce compressive stress, improving fatigue resistance (e.g., aerospace components).
9. Parkerizing (Phosphating)
Forming a phosphate conversion coating on steel for corrosion protection and improved paint adhesion.
10. E-Coating (Electrocoating)
Immersing parts in an electrophoretic paint bath to deposit a uniform, corrosion-resistant coating (e.g., automotive bodies).
11. Cerakoting
Ceramic-based coating for high abrasion and chemical resistance, used on firearms, automotive parts, and tools.
12. Black Oxide (Blackening)
Chemical conversion coating creating a black magnetite layer on steel for corrosion resistance and aesthetics.
13. Laser Texturing
Using lasers to create precise surface patterns for improved grip, reduced friction, or functional designs (e.g., engine components).
14. Vapor Deposition (PVD/CVD)
Depositing thin films (e.g., TiN, DLC) via physical/chemical vapor deposition for wear resistance and low friction.
15. Chromate Conversion Coating (CCC)
Applying a chromate layer on aluminum or magnesium for corrosion protection (e.g., aerospace applications).
16. Hot Dip Galvanizing
Dipping steel in molten zinc to form a thick, durable anti-corrosion coating (e.g., outdoor structures).
17. Chemical Polishing
Etching surfaces with chemicals to remove burrs and achieve a smooth finish, suitable for complex geometries.
18. Siliconizing
Coating metals with silicon to enhance heat resistance and reduce friction (e.g., engine parts).
19. Anodized Coloration
Dyeing anodized aluminum in various colors for decorative or identification purposes.
20. Electroless Nickel Plating (ENP)
Plating nickel without electricity, providing uniform thickness and high corrosion resistance (e.g., oil field equipment).