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Sheet Metal Fabrication

Sheet Metal Fabrication remains one of the most versatile and cost-effective manufacturing processes across industries. This guide explores the key processes - laser cutting, welding, bending, and stamping - along with the precision standards that define quality sheet metal work. From aerospace components to electronic enclosures, modern sheet metal fabrication combines advanced technologies with skilled craftsmanship to produce high-quality metal parts efficiently.

Laser Cutting Technology

Modern laser cutting systems have transformed sheet metal processing:
• Fiber laser technology dominates with:

Cutting speeds up to 120m/min for thin gauges
Positional tolerances of ±0.05mm
Kerf widths as narrow as 0.08mm
Minimum hole diameter of 1x material thickness

• Material capabilities include:
Mild steel (0.5-30mm)
Stainless steel (0.3-25mm)
Aluminum (0.5-20mm)
Copper/brass (0.3-12mm)

Stamping / Punching

High-speed precision punching:
• CNC turret punches:
600+ hits/minute
±0.05mm tolerance
60+ tool stations

• Progressive dies:
20+ stations
Complete parts each stroke
Tolerances ±0.1mm

• Special processes:
Thread forming
Louvering
Embossing

Precision Bending Operations

Bending machines offer unmatched precision tolerances:
• Electric servo press brakes offer:
Repeatability of ±0.01mm
Angle accuracy of ±0.25°
Backgauge positioning to ±0.02mm
200+ bend programs storage

• Tooling innovations:
Multi-V dies (4-6 stations)
Radius punches down to 0.1R
Special form tools for complex profiles
Quick-change systems (<2 min)

• Bending techniques:
Air bending (most common)
Coining (high precision)
Bottoming (consistent results)
Rotary bending (complex shapes)

Welding Processes

Advanced welding ensures strong, clean joints:
• TIG welding:
For 0.3-6mm materials
Weld bead control to 0.3mm
Minimal distortion

• Laser welding:
Spot sizes to 0.15mm
Penetration control ±0.05mm
Automated seam tracking

• Resistance welding:
Cycle times under 0.3s
No filler material
Consistent nuggets

• Quality measures:
X-ray inspection
Dye penetrant testing
Tensile testing

Precision Standards

Modern fabrication achieves remarkable accuracy:
• Dimensional tolerances:
Cutting: ±0.075mm
Bending: ±0.15°
Hole positions: ±0.04mm

• Surface finish:
Laser cut: Ra 2.5μm
Bent surfaces: No visible marks
Welds: Smooth transitions

Precision Standards

• Measurement:
CMM (0.001mm repeatability)
Laser scanners
Optical comparators
Applications

Key industries served:
• Electronics (EMI shields, chassis)
• Medical (surgical tools, devices)
• Automotive (brackets, panels)
• Aerospace (structural components)

Display of Machined Finished Product Cases

If you would like to learn more about these finished products, you can click to find out more details about them.

Customized sheet metal parts for equipment housing

Case sharing:
This housing was customized in 2020 years,
The size is 500×300×420 mm.
Due to the diverse functions, there are also many opening positions.
Tolerances ±0.05 mm,
Lead time is 3 days.
Material: galvanized sheet
We offer a variety of materials and sizes for you to choose from, and our rich experience can meet your needs. Thank you.

Sheet Metal Fabrication: Precision, Speed, Versatility

Sheet metal fabrication is a cornerstone of modern manufacturing, offering unmatched flexibility, cost-efficiency, and precision for producing high-quality metal components. From laser cutting to welding, bending, and stamping, each process delivers unique benefits that make sheet metal ideal for industries ranging from aerospace to consumer electronics. Below are the key advantages of sheet metal fabrication.

1. Laser Cutting: High Precision & Fast Turnaround
Laser cutting is one of the most efficient methods for producing complex sheet metal parts with tight tolerances. Key benefits include:
Extreme Tolerances (±0.1mm) – Fiber lasers deliver clean, burr-free cuts with minimal heat distortion.
High-Speed Production – Cuts thin materials at 100+ m/min, reducing lead times.
Material Versatility – Works with steel, aluminum, copper, and brass (0.5–30mm thickness).
Minimal Waste – AI-powered nesting optimizes material usage (up to 95% efficiency).

2. CNC Bending: Flexibility & Repeatability
Modern CNC press brakes ensure consistent, high-precision bends for both prototypes and mass production:
Tight Tolerances (±0.25°) – Servo-electric machines maintain tolerances across thousands of parts.
Quick Setup – Tool changes take minutes, enabling fast job switching.
Complex Geometries – Multi-axis bending allows intricate shapes without secondary operations.
No Springback Issues – Advanced software compensates for material rebound automatically.

3. Welding: Strong & Aesthetically Clean Joints.
Advanced welding techniques (TIG, laser, resistance) ensure durable and visually appealing assemblies:
High-Strength Bonds – TIG welding offers 0.3mm precision with minimal distortion.
Automated Robotic Welding – Ensures consistency (±0.2mm seam alignment).
Cosmetic Finishing Options – Grinding, polishing, and powder coating enhance appearance.

4. Stamping/Punching: Cost-Effective Mass Production
Ideal for high-volume orders, stamping delivers:
Rapid Production (600+ hits/min) – CNC turret punches speed up fabrication.
Precision (±0.05mm) – Progressive dies produce complex features in a single stroke.
Secondary Operations – Embossing, threading, and louvering reduce assembly steps.

5. Superior Precision & Quality Control

Sheet metal fabrication maintains strict tolerances across all processes:
Laser Cutting (±0.1mm) – Ideal for tight-tolerance components.
Bending (±0.25°) – Ensures perfect fit in assemblies.
CMM & Optical Inspection – Verifies compliance with ISO 9001 standards.

6. Fast Turnaround & Scalability
Prototypes in Days – No tooling needed for initial samples.
Short-to-Long Runs – Seamlessly scale from 10 to 100,000+ parts.
Just-in-Time Manufacturing – Reduces inventory costs with on-demand production.

Conclusion
In short, sheet metal fabrication offers the speed, precision, and cost-effectiveness ideal for the high-performance metal parts industry.
Whether it's housings, brackets, or structural components, laser cutting, bending, welding, and stamping ensure fast delivery, tight tolerances, and design flexibility.

Are you request high-quality sheet metal parts? Contact us today for a free DFM assessment and quick quote!

Description Of The Processing Procedure

This guide details each step from digital programming to final inspection, highlighting how modern technology ensures precision and efficiency in metal manufacturing.

Modern sheet metal fabrication combines advanced programming with precision machinery to deliver high-quality components. From initial CAD programming to final inspection, each step is carefully controlled to ensure dimensional accuracy and repeatability. The integration of laser cutting, precision bending, welding, and stamping allows for efficient production of complex parts while maintaining tight tolerances. Continued advancements in automation and quality control systems further enhance the capabilities of sheet metal fabrication across industries.

Bending Process
Welding Process
Stamping Process
Laser Cutting Process
Quality Assurance Throughout

Bending Process

2.1 Programming
Import of 3D models into bending software
Bend sequence simulation
Tooling selection database
Springback compensation calculations

2.2 Machine Preparation
Tool installation and alignment
Backgauge calibration
Crowning compensation adjustment

2.3 Bending Operation
Test bending and angle measurement
Sequential bending of complex parts
In-process angle verification

2.4 Quality Control
CMM inspection of critical bends
Forming limit verification
Surface finish inspection
Welding Process

3.1 Programming
Weld path programming for robots
Parameter optimization (current, speed)
Fixture design in simulation software

3.2 Setup
Fixture installation and calibration
Gas supply verification
Electrode/wire preparation

3.3 Welding Operation
Tack welding for alignment
Main weld passes
Interpass temperature control

3.4 Post-Weld
Stress relief (thermal or mechanical)
Weld inspection (visual, penetrant, x-ray)
Surface finishing (grinding, polishing)
Stamping Process

4.1 Programming
Die design in CAD/CAM
Forming simulation (wrinkling, tearing)
Press stroke optimization

4.2 Die Setup
Die installation and alignment
Bolster plate preparation
Pressure pad adjustment

4.3 Stamping Operation
Progressive die operation monitoring
In-process dimensional checks
Scrap removal system operation

4.4 Post-Stamping
Part ejection and collection
Secondary operations (threading, deburring)
Final inspection (go/no-go gauges)
Laser Cutting Process

1.1 Programming Stage
CAD file import and optimization
Nesting software arrangement for material efficiency
Laser path simulation for collision avoidance
Parameter setting (power, speed, gas pressure)

1.2 Machine Setup
Material loading and leveling
Nozzle selection and focus adjustment
Assist gas selection (N₂ for non-oxidizing cuts, O₂ for carbon steel)

1.3 Cutting Operation
Piercing sequence optimization
Real-time monitoring of cut quality
Automatic slag detection and removal

1.4 Post-Cutting
Part unloading with vacuum lifters
Deburring (mechanical or laser)
First article inspection using laser scanners
Quality Assurance Throughout

5.1 In-Process Checks
Laser cut edge quality inspection
Bend angle verification
Weld penetration testing
Stamped feature dimensional checks

5.2 Final Inspection
Full dimensional report generation
Material certification verification
Surface finish measurement
Functional testing (for assemblies)

Display of Processable Materials

Surface Treatment Exhibits for Fabricated Components

Die-casting products can be subjected to a wide range of surface treatments. According to functional requirements and aesthetic requirements, they are mainly divided into the following categories:

1.Functional Surface Treatment

Aluminum
Hard anodizing: film thickness 30-50μm, hardness up to HV800
Color anodizing: can present industrial colors such as champagne gold/titanium black
Micro-arc oxidation: ceramic surface, temperature resistance up to 2000℃

Electroplating series
Nickel plating: matte/bright optional, salt spray test 500+ hours
Chrome plating: decorative chrome (0.3μm) and hard chrome (50-100μm)
Silver/gold plating: for electronic connectors, contact resistance <10mΩ
Spraying technology
Nano-ceramic coating: hardness 9H, anti-fingerprint
Teflon coating: Friction coefficient 0.05-0.1
UV-resistant powder coating: color retention period 10 years+

2. Decorative Treatment

Metal texture process
Physical vapor deposition (PVD): can be plated with titanium gold/rose gold, etc.
Water plating process: mirror effect Ra≤0.05μm
Etched texture: CD texture/sun texture, etc. can be customized

Special visual effects
Two-color anode: gradual color transition
Micro-carving technology: laser engraving depth 0.1-0.3mm
Fantasy color coating: angle color change effect

3.Composite Treatment Solution

OMD process (in-mold decoration)
Combined with film transfer and die-casting
Can achieve three-dimensional textures such as wood grain/carbon fiber
Secondary injection molding
Die-casting surface coated with TPU/silicone
Anti-slip area hardness adjustable Shore A 50-90

Laser welding
Composite connection of dissimilar materials
Weld strength reaches 90% of the parent material

4. Special Environment Treatment

Military-grade protection
Dacromet coating: salt spray resistance 1000h+
Phosphating treatment: friction coefficient is stable at 0.08-0.12

Medical-grade treatment
Antibacterial coating: silver ion doping technology
Electrolytic polishing: surface roughness Ra≤0.2μm
High temperature protection
Thermal barrier coating: temperature resistance 800℃+
Aluminization treatment: anti-oxidation temperature reaches 1000℃

5.Selection Suggestions

Automotive parts are preferred:
Electrophoresis + powder spraying composite process
DLC diamond-like coating is recommended for friction parts
Recommended for consumer electronics:
Three-stage anodizing (sandblasting + anodizing + sealing)
Anti-fingerprint nano coating is recommended for touch area

5.Selection Suggestions

Applicable to industrial equipment:
High velocity flame spraying (HVOF)
Chemical nickel plating can be used for key mating surfaces
Each treatment solution needs to consider:
Substrate adaptability (ADC12/A380, etc.)
Dimensional tolerance effect (0.01-0.1mm needs to be reserved for plating)
Post-processing temperature limit (zinc alloy <200℃)

In short, surface treatment processes are applicable to many different processing methods and materials. We need to choose the appropriate surface treatment according to different application environments to give full play to its characteristics.
If you are still struggling with what kind of surface treatment to do for your project, please contact Zhongyi Precision's engineering team to provide you with the best solution.

Electroplating

Polishing

Grinding

Anodized

What Our Customers Say

Andrew

The precision and quality of your machined parts are outstanding! They fit perfectly into our assembly with zero issues. Will definitely order again!

2024.10.3

Peter

Excellent work! The parts were delivered on time and met all our specifications. Your attention to detail is impressive. Highly recommended!

2024.10.3

Gowthaman

We're very satisfied with the machining services provided. The finish and tolerances are exactly as required. Great job and smooth communication throughout!

2024.10.3

Romen

Consistently high-quality machining services. This is our third order, and as always, no complaints. Keep up the great work!

2024.10.3

We Look Forward to Working with You!

Are you looking for high-quality sheet metal parts with high precision, fast speed and affordable prices?
You have come to the right place! Zhongyi Precision specializes in turning your designs into perfect sheet metal parts - whether you need prototypes, small batches or large-scale production.
Why choose us?
Advanced technology: Our fiber laser cutting machines, bending machines and robotic welding systems provide ± 0.1 mm tolerances which is perfect for applications with tight tolerances.
Fast delivery: Need a part urgently? We can provide prototypes in 3-5 days and mass production in 1-2 weeks.
Material expertise: From stainless steel to aluminum, copper and special alloys, we select the right metal for your project.
End-to-end support: From DFM feedback to finishing (powder coating, anodizing, electroplating), we are here for you all the way.
Get started now!
Simply share your CAD files, sketches or even ideas and we’ll provide:
Free design review – optimize manufacturability and cost
Transparent pricing – no hidden fees
Samples available – pre-production testing
Ready to make your sheet metal project a reality?
Upload your files by clicking on the Contact Now window.

Sheet Metal Fabrication

Laser Cutting Technology

Stamping / Punching

Precision Bending Operations

Welding Processes

Precision Standards

Precision Standards

Display of Machined Finished Product Cases

Customized sheet metal parts for equipment housing

Sheet Metal Fabrication: Precision, Speed, Versatility

Description Of The Processing Procedure

Display of Processable Materials

Surface Treatment Exhibits for Fabricated Components

1.Functional Surface Treatment

2. Decorative Treatment

3.Composite Treatment Solution

4. Special Environment Treatment

5.Selection Suggestions

5.Selection Suggestions

What Our Customers Say

Andrew

Peter

Gowthaman

Romen

We Look Forward to Working with You!

Quick Links

Product Category

Contact Us

Sheet Metal Fabrication

Laser Cutting Technology

Stamping / Punching

Precision Bending Operations

Welding Processes

Precision Standards

Precision Standards

Display of Machined Finished Product Cases

Customized sheet metal parts for equipment housing

Sheet Metal Fabrication: Precision, Speed, Versatility

Description Of The Processing Procedure

Display of Processable Materials

Surface Treatment Exhibits for Fabricated Components

1.Functional Surface Treatment

2. Decorative Treatment

3.Composite Treatment Solution

4. Special Environment Treatment

5.Selection Suggestions

5.Selection Suggestions

What Our Customers Say​​​​​​​

Andrew

Peter

Gowthaman

Romen

We Look Forward to Working with You!

Quick Links

Product Category

Contact Us

What Our Customers Say