CNC Machine Powder Coating Line Project – Shandong Lijian, China

Customized Powder Coating System for CNC Machine Tools

1. Project Information

Project: Shandong Lijian 050 Site – CNC Machine Powder Coating Line
Customer: Shandong Lijian
Location: Shandong, China
Application: CNC Machine Tools
Coating Process: Pretreatment + Drying + Electrostatic Powder Spraying + Curing
System Type: Customized Powder Coating Production Line

2. Project Background

Shandong Lijian required a powder coating line for CNC machine tools and related metal components.

CNC machine tools generally involve large metal structures, machine frames, covers, and other fabricated parts. Compared with small components, these workpieces require more attention to conveying, spray access, curing space, and overall line layout.

ZHYAO developed the coating line around the customer's actual workpieces and factory conditions, with the aim of creating a practical and continuous coating process.

3. Customer Requirements

The project needed to address several practical production requirements:

• Suitable handling of CNC machine components with different sizes and structures
• Effective surface preparation before powder coating
• Adequate powder coverage on large and irregular metal surfaces
• Stable transportation between the different coating stages
• Sufficient curing space for larger workpieces

• A practical production line layout within the available workshop

  
  

4. ZHYAO Solution

The coating line was arranged as a continuous process:

Loading → Pretreatment → Drying → Electrostatic Powder Spraying → Powder Recovery → Curing → Cooling → Unloading

The equipment configuration and layout were determined according to the customer's workpiece characteristics and production conditions.

Powder Coating Process

The workpieces first undergo surface pretreatment and drying before entering the powder spraying section.

Electrostatic powder spraying is then used to apply the coating to the machine components. After spraying, the workpieces enter the curing oven, where the powder coating is cured according to the requirements of the selected coating material.

The main processes are connected through the conveying system to reduce repeated manual transfer.

Workpiece Size and Structure

CNC machine tools include large frames, covers, structural components, and other metal parts.

Their dimensions and shapes can vary, so the conveyor arrangement, hanger design, spray booth dimensions, and curing area need to be matched to the actual workpieces.

Coating Coverage

Large machine structures often have flat surfaces combined with corners, edges, recessed areas, and structural joints.

The spraying arrangement therefore needs to provide sufficient access to the required coating surfaces. Workpiece orientation and spray gun positioning are considered according to the actual product structure.

Conveyor Arrangement

The conveyor system connects the main coating sections and keeps the workpieces moving through the production process.

The loading method, hanger configuration, and spacing are selected according to the size and weight of the CNC machine components, while maintaining sufficient clearance during transportation and spraying.

Factory Layout

The line layout was developed according to the available workshop space.

The positions of the pretreatment equipment, spraying area, curing oven, loading and unloading areas, conveyor route, and maintenance space were considered together to create a practical material flow.

5. Project Outcome

The completed powder coating line provides Shandong Lijian with a connected coating process for CNC machine tools and related metal components.

The integrated system brings several practical production benefits:

• More consistent powder application through a controlled spraying process
• Less manual handling between coating stages
• More efficient material flow through continuous conveying
• Better coordination between pretreatment, spraying, and curing
• More efficient powder use through powder recovery
• A more organized coating workflow within the workshop

The line also provides a more consistent process for handling large machine components, helping the customer move from separate coating operations toward a connected production workflow.

6. Why Powder Coating for CNC Machine Tools?

CNC machine tools contain large metal structures that require both surface protection and a suitable finished appearance.

Powder coating can be applied to many fabricated steel components when the substrate preparation, powder material, spraying conditions, and curing process are properly matched.

For large machine components, the coating system also needs to consider workpiece handling and spray access. These factors are therefore incorporated into the design of the complete coating line rather than considered separately.

7. Request a Customized Powder Coating Line

Planning a powder coating line for CNC machine tools or other large metal components?

Send us your workpiece photos or drawings, dimensions, weight, production requirements, and factory layout. ZHYAO engineers can evaluate your application and develop a suitable coating line solution.

The Shandong Lijian 050 Site project was designed around the characteristics of CNC machine tools and their metal components.

By integrating surface pretreatment, drying, powder spraying, powder recovery, curing, and conveying into one production process, the line provides a more organized and continuous coating workflow.

For large and structurally varied machine components, matching the equipment configuration to the actual workpieces is essential. This project reflects ZHYAO's approach of developing powder coating systems according to the product, production requirements, and factory conditions.