1. Can you do small batch stamping?

Yes. Prototype or soft tooling allows for cost-effective small runs before committing to hard tooling for high volume.

2. What secondary operations are commonly needed?

Deburring, tapping, welding, staking, heat treating, plating, painting, and degreasing.

3. How long does tooling take?

Simple tools: 2–4 weeks; complex progressive dies: 6–10 weeks or more.

4. What surface treatment can you provide?

Powder coating, zinc plating, hot-dip galvanizing, polishing, wet paint, anodic oxidation, electrophoretic paint, passivation, etc.

5. Can Yixing technology Provide PPAP Services and Documentation?

Yes. We are quite familiar with the Production Part Approval Process for Automotive industry customers, which is also similar to documentation and project management required in the military, aerospace, and nuclear industries.

Metal Enclosure Stamping, Electronic Housing progressive die, Aluminum Cabinet Stamping Die, Custom Metal Shell Die

Our Advantages in Metal Enclosure Stamping and Manufacturing

Metal enclosures are the protective backbone of modern electronics, widely used in servers, switches, industrial PCs, and power supplies. Typically materials like SECC, galvanized steel, 5052/6061 aluminum alloy, and SUS304 stainless steel, these parts demand a balance of structural integrity and cosmetic finish. At Yixing Technology, we provide a comprehensive One-Stop Solution that adapts to your specific needs.

Stamped Metal Enclosure Capability

Parameter	Specification
Applicable Materials	SECC, SGCC (galvanized steel), 5052 / 6061 aluminum, SUS304 stainless steel
Sheet Thickness Range	0.5–4.0 mm
Dimensional Tolerance	±0.05 mm (typical); ±0.02 mm (precision)
Flatness	≤ 0.05 mm / 100 mm
Perpendicularity	≤ 0.05 mm / 100 mm
Process Types	Progressive die (high volume) / Transfer die (medium volume) / Mold-free (low volume)
Surface Quality (Visible Face)	Mirror polished, Ra ≤ 0.4 µm; no orange peel, scratches, or tool marks
Die Steel	SKD11, DC53, Tungsten carbide (YG20 / YC20C)
Die Life	≥1,000,000 strokes (progressive); ≥500,000 strokes (transfer)
Stamping Speed	200–1,200 SPM (progressive); 15–60 SPM (transfer)
Press Tonnage Range	100T–800T
Mold Lead Time	25-35 days
Mold-Free Lead Time	5–15 days (prototype); 10–20 days (small batch)

Material We supported

Material	Typical Grade	Thickness	Characteristics
Steel	DC01/DC04	0.5–3.0 mm	Need secondary process
Galvanized Steel	G90/ DC01+ZF270/SECC / SGCC	0.5–3.0 mm	Good corrosion resistance, weldable, cost-effective
Aluminum	5052 / 5754/ 6061	0.5–4.0 mm	Lightweight, corrosion-resistant, high springback
Stainless Steel	SUS304 SUS 316	0.5–3.0 mm	Excellent corrosion resistance, high strength, work-hardening

Metal Enclosure Surface Finishing We work

After stamping, metal enclosures typically require surface finishing to improve corrosion resistance, appearance, and durability. Below are the most common post-processing methods.

1. Anodizing

Best for: Aluminum

An electrochemical process that forms a protective oxide layer on aluminum. Can be clear, dyed in various colors, or hard anodized for wear resistance.

Thickness: 5–25 µm (decorative); 25–50 µm (hard anodized)
Colors: Natural, black, blue, red, gold, etc.
Advantages: Corrosion resistance, scratch resistance, non-conductive, premium appearance

2. Electrophoresis / E-Coating

Best for: Steel, aluminum, galvanized steel

An immersion process where paint particles deposit uniformly on the metal surface under electrical current. Excellent for complex shapes and edges.

Thickness: 15–30 µm
Colors: Black, gray, custom colors
Advantages: Uniform coverage, excellent corrosion resistance, eco-friendly

3. Powder Coating

Best for: Steel, aluminum, galvanized steel

Dry powder is electrostatically sprayed onto the surface and cured under heat to form a hard, durable finish.

Thickness: 60–120 µm
Colors: Wide range (RAL colors), textured or smooth
Advantages: Thick, durable, impact-resistant, environmentally friendly

4. Zinc Plating

Best for: Steel, SECC, SGCC

An electroplating process that deposits a zinc layer on steel for corrosion protection. Can be clear, blue, yellow, or black chromate.

Thickness: 5–15 µm
Colors: Clear, blue, yellow, black
Advantages: Excellent corrosion resistance, low cost, good conductivity

5. Brushing

Best for: Aluminum, stainless steel

A mechanical surface treatment that creates a unidirectional satin texture using abrasive belts or brushes.

Finish: Hairline, satin, non-directional
Ra Value: 0.4–1.6 µm
Advantages: Premium aesthetic, hides fingerprints and scratches, ideal for consumer electronics

Metal Enclosure Applications

Our metal enclosures serve a wide range of industries and products:

Server chassis – data centers and cloud infrastructure
Network switch / router housings – telecom and enterprise networking
Industrial PC enclosures – factory automation and control systems
Power supply housings / heat sinks – energy and thermal management
Instrument & meter cases – measurement, testing, and medical devices

From IT and telecom to industrial and energy sectors, we deliver precision stamped enclosures for every application.

Process Selection Guide

Process	Best For	Volume	Lead Time	Tooling Cost
Progressive Die	High-volume enclosures, complex features	100K+ pcs	25–45 days	High
Transfer Die	Medium-volume, larger enclosures	10K–100K pcs	20–35 days	Medium
Mold-Free	Prototypes, low-volume, design validation	1–5,000 pcs	5–20 days	Low

1. Multi-Station Precision Progressive Dies (high quantity)

Designed for high-volume, standardized production of components like small power supply enclosures and network module housings, our progressive dies set the benchmark for efficiency and quality.

Our Advantages:

1) Fully Automated

We integrate all the stamping processes—including punching, embossing, blanking, flanging, and tapping—within a single progressive die. This fully automated system maximizes product consistency and minimizes labor costs.

2) Dimension Stability

We use high-rigidity mold steel, combined with dual guiding systems, to ensure consistent accuracy after the final stamping, meeting the tight tolerances required for assembly.

3) High Surface Quality

For visible components, we apply mirror finishing to mold cavities. This prevents surface scratches and ensures a perfect surface after the stroke.

2. Multi-Station Transfer Dies (medium quantity)

For complex structures requiring deep drawing and complex shape forming—such as server chassis and large equipment cabinets—our transfer dies offer greater flexibility and control.

Our Advantages:

1) More Flexibility but highly automated

Robotic arms provide precise, flexible transfer between different molds, enabling complex operations including deep drawing, side piercing, and side flanging that would be impossible in progressive dies.

2) Precision Process Control

Hydraulic and servo control systems allow us to finely control forming dimensions, effectively preventing common defects like wrinkling and cracking.

3) Maintenance easier

Since each mold is independent, we can quickly repair or replace a single unit without affecting the others.

3. Mold-Free Manufacturing: Rapid Solutions

By eliminating the mold design and manufacturing phase, we can deliver finished enclosure samples in days rather than weeks, allowing you to test your product in the market immediately.

Our Process Flow

DFM Design → Die Manufacturing (CNC / Wire EDM / EDM) → Die Assembly → Trial Run (T1) → Small-Batch Validation → Mass Production

1. DFM – Review drawings, strip layout, stations, clearance, springback.

2. Die Manufacturing – CNC, wire EDM, sinker EDM, grinding, heat treatment, coating, inspection.

3. Die Assembly – Assemble plates, punches, pilots, springs; set clearance and feed.

4. Trial Run (T1) – Mount die, run samples, check dimensions, burr, angle; adjust.

5. Small Batch – 500–5,000 pcs; CPK/PPK, tool wear, plating, PPAP approval.

6. Mass Production – High-speed stamping, SPC, maintenance, plating, packaging.

Why Choose Yixing Technology?

Our company excels in meeting these requirements by our advanced process capabilities and expertise:

1. ULTRA-PRECISIONTo ensure reliable assembly and seamless fit, critical features such as dimensions, flatness, and perpendicularity must be held within tolerances of ±0.05 mm. This requires molds with superior precision. Our machining equipment's tolerances reach ±2 µm, significantly exceeding the standards of stamping dies.

2. FLAWLESS SURFACE FINISHTo ensure premium appearance and flawless coating, enclosure surfaces must be free of burrs, scratches, and tool marks. Our molds feature sharp cutting edges and precisely controlled clearances, enabling clean, burr-free stamping with mirror-polished visible faces (Ra ≤ 0.4 µm).

3. MULTI-PROCESS INTEGRATIONModern enclosures often require multiple forming operations—such as blanking, bending, deep drawing, trimming, and flanging. Our mold designers specialize in creating complex, multi-process molds to match clients’ requirements.

4. HIGH-QUALITY MOLD.To support continuous and high-speed operation, our molds are made from high-rigidity, high-toughness materials, such as SKD11, DC53, and tungsten carbide alloys, ensuring durability and long service life.