Custom Sheet Metal Chassis Frame for Industrial Equipment

Low-Volume SPCC Sheet Metal Fabrication with Welding, Grinding and Powder Coating

Project Background

A US industrial equipment manufacturer required a custom sheet metal chassis frame for their new equipment platform.

The chassis was designed as a structural support component to hold internal electronic modules and mechanical assemblies. The design required:

• High structural rigidity
• Accurate mounting locations
• Ventilation openings
• Multiple threaded mounting points
• Durable surface protection

Since the project quantity was 100 sets, the customer needed a flexible manufacturing solution that could provide production-quality parts without investing in expensive stamping tooling.

YS Precision provided a complete sheet metal manufacturing solution, including laser cutting, CNC bending, press riveting, welding, finishing, and powder coating.

Project Information

Customer Manufacturing Challenges

1. Producing a Rigid Chassis Structure with Multiple Features

The chassis frame consisted of several sheet metal sections forming a rigid U-shaped structure.

The design included:

• Large bent side panels
• Ventilation openings
• Internal mounting brackets
• Multiple installation holes
• Press-fit threaded hardware

Maintaining the overall geometry after bending and welding was critical for the customer's final assembly process.

2. Controlling Welding Deformation

Because the chassis required welded assembly, heat distortion was one of the key manufacturing challenges.

Incorrect welding methods could lead to:

• Frame deformation
• Hole position deviation
• Assembly difficulties

YS Precision optimized the manufacturing sequence by controlling:

• Welding order
• Fixture positioning
• Heat input

After welding, each chassis was inspected and adjusted to ensure dimensional consistency.

3. Protecting Threaded Mounting Points During Powder Coating

The chassis included multiple threaded mounting locations for internal components.

During powder coating, special attention was required to prevent coating material from entering:

• Threaded holes
• Precision mounting surfaces
• Assembly interfaces

Protective masking methods were applied before coating.

After finishing, threaded areas were checked to ensure smooth assembly.

Manufacturing Process

Step 1: Laser Cutting

SPCC cold rolled steel sheets were precisely laser cut according to the customer's CAD drawings.

Advantages:

✓ Flexible for low-volume production
✓ Accurate profiles
✓ Clean cutting edges

Step 2: CNC Sheet Metal Bending

The cut panels were formed through CNC bending.

Our engineers controlled:

• Bend angles
• Panel alignment
• Overall frame dimensions

to achieve consistent chassis geometry.

Step 3: Press Riveting & Hardware Installation

Self-clinching hardware was installed to create reliable mounting points.

This provided:

• Strong threaded connections
• Repeatable assembly
• Improved production efficiency

Step 4: Welding Assembly

Multiple sheet metal components were welded into the final chassis structure.

The welding process focused on:

• Structural strength
• Dimensional stability
• Clean appearance

Step 5: Grinding and Surface Preparation

After welding, weld seams were carefully ground and finished.

This improved:

• Surface smoothness
• Coating quality
• Final appearance

Step 6: Powder Coating

The completed chassis frames received industrial powder coating.

The coating provided:

• Corrosion resistance
• Durable surface protection
• Professional appearance

Critical threaded areas were protected throughout the coating process.

Quality Control Before Shipment

Each chassis frame was inspected before export:

✓ Overall dimensions
✓ Mounting hole positions
✓ Thread quality
✓ Welding quality
✓ Surface finish

The finished products were packaged carefully and shipped to the customer's facility in the United States.

Project Result

YS Precision successfully manufactured and delivered 100 sets of industrial equipment chassis frames.

The final parts were supplied as assembly-ready components with:

• Accurate mounting features
• Strong welded structure
• Clean powder-coated surfaces
• Reliable threaded connections

The project allowed the customer to move forward with equipment assembly while avoiding the cost and limitations of traditional tooling-based manufacturing.

Why Choose YS Precision for Custom Sheet Metal Manufacturing?

YS Precision supports engineering teams with complete sheet metal solutions:

• Sheet Metal Prototype
• Low Volume Sheet Metal Production
• Industrial Equipment Chassis
• Custom Enclosures
• Laser Cutting
• CNC Bending
• Welding
• Surface Finishing
• Assembly Support

From prototype quantities to low-volume production, we help global customers transform sheet metal designs into reliable finished products.