Available Metal Processing Categories
We provide custom manufacturing services for various metal components. Customers can send drawings or samples for quotation.
Small orders are accepted.
Metal Processing Services
Custom Metal Parts Manufacturing
Sheet Metal Stamping Parts
CNC Precision Machining Parts
304 Stainless Steel Precision Casting
316 Stainless Steel Custom Components
Custom Steel Casting Parts Based on Drawings
Laser Cutting Services
Metal Stamping Parts Manufacturing
Stainless Steel Sheet Metal Stamping
Stainless Steel Laser Processing
Electronic Conductive Spring Contact Manufacturing
Metal Spring Clip Manufacturing
Manufacturing Processes
Process Classification and Selection Logic
Basic Classification Principle
Metal manufacturing processes can be divided according to how the material changes during production:
Casting Process
The material changes from solid → liquid → solid, creating complex shapes through molten metal forming.
Plastic Forming Process
The material remains solid but is permanently reshaped through molds and external force.
Subtractive Manufacturing Process
Material is removed from a metal blank to achieve the required dimensions and geometry.
Typical Manufacturing Sequence
The following sequence shows a common production flow from raw material to finished parts:
Precision Casting
Creates a complex near-net-shape blank.
01
Laser Cutting
Cuts sheet metal into the required flat pattern before forming.
02
Stamping / Sheet Metal Forming / Spring Forming
Shapes the cut material through dies and forming tools.
03
CNC Precision Machining
Finishes critical dimensions such as holes, flat surfaces and threads.
04
Note: The actual process flow depends on the part design. For example, cast parts may go directly to CNC machining without stamping. Laser cutting can also be used as a standalone process when the cut part is the final product.
Detailed Process Introduction
1. Liquid Forming Process - Precision Casting (Investment Casting)
Process Principle
Investment casting uses wax models to create the initial shape:
Wax pattern
1
>>
Ceramic shell coating
2
>>
Wax removal
3
>>
Molten stainless steel casting
4
>>
Cooling and shell removal
5
>>
Finished casting
6
Materials commonly include stainless steel grades such as 304 and 316.
Advantages
Complex Geometry Capability
- Almost unlimited design flexibility
- Suitable for complex curves, internal cavities and small holes
- Ideal for parts that are difficult to machine
High Material Utilization
- Near-net-shape manufacturing
- Less secondary machining required
- Reduced material waste
Strong Finished Parts
- Solid one-piece structure
- No welding joints
- Good mechanical strength and corrosion resistance
Limitations
Higher tooling cost
Less economical for very small quantities
Surface finish and dimensional accuracy are lower compared with CNC machining
Typical surface roughness:
Ra 6.3–12.5 μm
Cost Considerations
Main cost factors:
- Wax mold tooling
- Stainless steel material
- Casting volume
For higher quantities, the tooling cost is spread over more units, reducing the cost per piece significantly.
Recommended Applications
Precision casting is suitable when:
The part shape is complex
Internal cavities are required
Corrosion resistance is important
Materials such as 304/316 stainless steel are required
Production volume is medium to large (usually 500+ pieces)
2. Plastic Forming Process - Stamping, Sheet Metal & Spring Parts
Process Principle
Metal stamping uses a press machine and precision dies to apply force, causing permanent deformation of sheet metal.
Common operations include:
Cutting
Punching
Bending
Deep drawing
Embossing
Types of Stamping
Standard Metal Stamping
Used for structural parts such as:
- Brackets
- Covers
- Supports
- Housings
Sheet Metal Stamping
Usually combined with:
- Laser cutting
- Bending
- Welding
Common applications:
Electrical cabinets
Machine enclosures
Equipment panels
Precision Spring Clip Manufacturing
| Used for small precision components requiring |
|
| Typical thickness | 0.05–0.5 mm |
| Common materials |
|
Advantages
High Production Efficiency
Stamping speed can reach:
- Tens to hundreds of cycles per minute
Excellent Consistency
- Stable dimensions
- Suitable for automated mass production
Low Unit Cost
For high-volume production, the cost per piece can be very low.
Limitations
Tooling cost can be high
Not economical for small quantities
Limited ability for complex 3D shapes
Typical accuracy: IT9–IT12
Cost Considerations
Main cost factors:
Die tooling
Stainless steel strip material
Production volume
Large quantities significantly reduce the unit cost.
Recommended Applications
Stamping is suitable for:
Thin sheet materials (≤5 mm)
Large production quantities (1000+ pieces)
Flat or moderately formed components
Spring parts require careful material selection and heat treatment control.
3. Subtractive Manufacturing - Laser Cutting & CNC Precision Machining
(1) Laser Cutting
Process Principle
A high-power laser beam melts or vaporizes metal while assist gas removes molten material.
Advantages
No Tooling Required
- No mold cost
- Fast design changes through CAD files
- Ideal for prototypes and small batches
High Cutting Quality
- Narrow cutting kerf
- Small heat affected zone
- Clean stainless steel edges
Limitations
Mainly suitable for 2D profiles
Cannot create complex 3D shapes
Thick plates (>20 mm) require longer processing time
Cost Structure
No tooling cost.
Pricing mainly depends on:
Cutting length
Processing time
Stainless steel sheet cost
Gas consumption
Recommended Applications
Laser cutting is ideal for:
Sheet metal parts
Small batch production
Prototype development
Frequently changing designs
(2) CNC Precision Machining
Process Principle
CNC machines use computer-controlled cutting tools to remove material from metal blanks through milling, turning and drilling operations.
Advantages
High Precision
Typical accuracy
±0.005–0.01 mm
Surface finish
Ra 0.8 μm
Complex Machining Capability
Suitable for:
Curved surfaces
Deep holes
Threads
Precision mating structures
Complex mechanical components
Wide Material Compatibility
Can process:
Stainless steel
Aluminum
Hardened materials
Precision castings
Limitations
Material Waste
More material is removed compared with forming processes.
Lower Production Efficiency
Processing time can range from:
- Several minutes
- Several hours per part
Higher Processing Cost
Main costs include:
- Machine time
- Tooling
- Programming
- Labor
Cost Considerations
No mold cost required.
Main costs:
CNC machining hours
Cutting tools
Material waste
Fixtures
Recommended Applications
CNC machining is suitable for:
High precision components
Small and medium batch production
Parts requiring tight tolerances
Secondary finishing after casting or stamping
Common Process Combination Examples
|
Part Application |
Recommended Process |
Reason |
|
304 Stainless Steel Complex Valve Body (500 pcs) |
Precision Casting → CNC Machining |
Casting creates complex internal passages, CNC ensures sealing surface accuracy |
|
316 Stainless Steel Spring Clips (100,000 pcs) |
Laser Cutting → Precision Stamping → Heat Treatment |
Laser cutting reduces tooling cost, stamping provides high-speed production |
|
Custom Machine Panel (3 pcs) |
Laser Cutting → Sheet Metal Bending → Manual Finishing |
No mold required, suitable for fast production |
|
Precision Sensor Housing (5,000 pcs) |
Progressive Die Stamping → Secondary CNC Threading |
High-volume low-cost production with machining for critical features |
Custom Manufacturing Capability
Suva accept:
Customer drawings
01
Samples for reverse engineering
02
Prototype orders
03
Small batch production
04
Mass production projects
05
From precision casting, stamping, laser cutting to CNC machining, we provide complete metal manufacturing solutions based on part requirements, material selection and production volume.