ST200 50 A SCR Power Controller in the Evaporation Boat Heating Control System at Lanzhou Vacuum

Industry: Vacuum coating, PVD thin film process  |  Reference site: Lanzhou Vacuum  |  Configuration: ST200 SCR power controller 50 A

Kulun Electric’s ST200 series 50 A SCR power controller is applied in the vacuum coating evaporation boat heating control system at Lanzhou Vacuum, providing stable, adjustable electric heating power output for the thermal evaporation stage of PVD thin film processes. The solution suits multi-loop heating circuit control of vacuum coating equipment and can be configured by the number of evaporation boats, load power and equipment control mode.

1. Project Overview

2. Application Background

Vacuum coating is also known as thin film technology or physical vapor deposition (PVD). In thermal evaporation, material is melted and evaporated at high temperature and the vapor deposits on the target surface to form a thin film; evaporation boat heating control is a key stage of the process.

The vacuum coating equipment at Lanzhou Vacuum requires stable control of evaporation boat heating circuits, with smooth output, timely response, easy multi-loop integration and long-term reliability. Kulun configured the ST200 50 A SCR power controller for these conditions, supporting stable thin film deposition.

3. Requirements & Technical Challenges

For this application, the heating and power control system had to address the following points:

• Stable thermal evaporation power: Evaporation boat heating needs stable power output to reduce the effect of temperature fluctuation on film deposition.
• Coordinated multi-loop control: Multiple heating circuits on site require per-loop regulation and centralized management.
• High equipment integration requirement: The controller must fit the coating equipment cabinet space, wiring and control signals.
• Continuous operation reliability: PVD processes demand production continuity; the electrical system must adapt to long-cycle operation.
• Complete protection configuration: Overcurrent, overheating and phase loss protection support site maintenance and fault location.

4. KULUN Solution

Kulun Electric configured the ST200 SCR power controller (50 A) for the vacuum coating evaporation boat heating control system at Lanzhou Vacuum, for electric heating power regulation in the thermal evaporation process.

The solution supports multi-loop configuration by the number of evaporation boats and control circuits, helping the site achieve zoned heating, stable power regulation, centralized control and equipment electrical system integration.

Key Features of the Solution

• ST200 50 A regulation. Suits evaporation boat heating circuits, covering 50 A per-loop power control.
• PVD thermal evaporation fit. Provides stable heating power for material melting, evaporation and film deposition.
• Multi-loop centralized configuration. Loops can be arranged by the number of evaporation boats, meeting zoned heating and centralized control needs.
• Easy equipment integration. Suits cabinet installation, wiring, commissioning and maintenance of vacuum coating equipment.
• Comprehensive protection. Overcurrent, overheating and phase loss protection options improve site operating reliability.
• Built for continuous production. Designed for long-cycle vacuum coating operation with stable heating control.

5. Reference Projects

The ST200 50 A SCR power controller is applied in the vacuum coating evaporation boat heating control system at Lanzhou Vacuum, providing stable power regulation for the thermal evaporation process.

Lanzhou Vacuum | Evaporation boat heating control system

In this project, Kulun configured the ST200 50 A controller around the evaporation boat heating circuits, control mode and site installation conditions of the vacuum coating equipment, achieving stable, adjustable heating power output.

6. Project Site

ST200 50 A SCR power controller applied in the evaporation boat heating control system at Lanzhou Vacuum

7. Results

After the ST200 50 A controller was applied to the evaporation boat heating control system, the thermal evaporation process gained stable, adjustable power output, meeting PVD thin film requirements for heating control and continuous operation.

• Meets evaporation boat heating control requirements at Lanzhou Vacuum;
• ST200 50 A rating fits per-loop heating circuit power control;
• Stable power regulation helps improve thermal evaporation control consistency;
• Multi-loop configuration simplifies zoned heating and centralized management;
• Easy electrical system integration, commissioning and maintenance for vacuum coating equipment.

Note: Actual performance varies with the number of evaporation boats, load power, control mode, process material, cabinet cooling and site environment.

8. Applicable Scenarios

ST200 SCR power controllers can be selected by load current, control mode, loop count and installation space for a range of vacuum coating and industrial electric heating control applications.

• Vacuum coating evaporation boat heating control systems
• PVD thin film thermal evaporation processes
• Multi-loop low-current electric heating circuits
• Power control in vacuum equipment electrical cabinets
• Industrial heating projects requiring stable regulation and centralized control

9. FAQ