Custom Electric Tubular Heater for Electroplating and Surface Treatment

Electric heater

Tubular Heating Element

A tubular heating element is an electric heating component in which a resistance wire is enclosed inside a metal sheath and surrounded by high-purity crystalline magnesium oxide (MgO) powder. The MgO insulation provides excellent thermal conductivity, heat resistance, and electrical insulation, allowing heat to be efficiently transferred from the resistance wire to the heating medium.

With a compact and robust construction, tubular heating elements offer high mechanical strength, efficient heat transfer, reliable electrical insulation, convenient installation, and stable long-term operation. They can be manufactured in different configurations to meet the heating requirements of industrial process equipment.

Tubular heating elements are widely used in water tanks, salt and nitrate solution tanks, acid and alkaline tanks, air heating equipment, drying chambers, hot molds, electroplating equipment, and other industrial heating systems.

When selecting a heating element, the heating medium, chemical composition, operating temperature, corrosion characteristics, and working environment should be considered to determine the appropriate material and configuration.

Material Options

According to the characteristics of the chemical liquid and operating conditions, the heater sheath can be manufactured from 304 stainless steel, 316 stainless steel, titanium (Ti), or other suitable materials.

Material selection should be based on the actual chemical concentration, temperature, corrosion level, immersion conditions, and required service life. For corrosive plating and chemical solutions, the material compatibility should be confirmed before equipment selection.

Note: The original specification lists “Te” as a material. Please confirm the exact material name with the manufacturer before publication rather than using “Te” directly.

Material Selection for Electroplating Applications

The material of an electric tubular heater should be selected according to the chemical solution and operating conditions.

Important factors include:

• Chemical composition of the process solution

• Solution concentration

• Operating temperature

• Required heating capacity

• Continuous operating conditions

• Tank material

• Required corrosion resistance

Different heater materials may be suitable for different process conditions. For electroplating applications, Greatwell can configure the heater according to the customer's actual chemical solution and process requirements.

The final material selection should be confirmed against the chemical compatibility requirements before production.

How the Electric Tubular Heater Works

An electric tubular heater uses a resistance heating element enclosed within a tubular structure. When electrical power is supplied, the resistance element generates heat, which is transferred through the surrounding insulation and outer tube to the process solution.

When installed in an electroplating tank, the tubular heating element is immersed or positioned according to the equipment design. Heat is transferred to the plating solution to raise and maintain its temperature.

A temperature sensor and control system can be integrated with the heater to regulate the bath temperature according to the requirements of the plating process.

The heater design should be selected according to the solution chemistry, operating temperature, required heating capacity and tank configuration.

Electroplating Heater Specifications

Quality Control

Each electric tubular heater is checked according to the confirmed technical specifications before delivery.

Quality checks may include:

• Heater dimensions and overall construction

• Heating element condition

• Electrical connection

• Insulation condition

• Outer tube condition

• Material verification according to the approved specification

• Heating performance according to the agreed requirements

• Installation and connection compatibility

For customized heaters, inspection requirements can be confirmed according to the customer's electrical and process specifications.

Manufacturing & Application Experience

Greatwell supplies electric heating equipment as part of complete electroplating and surface treatment systems.

During heater configuration, the engineering team considers the process solution, tank dimensions, required heating temperature, heating capacity and electrical control requirements. The heater can then be integrated with the customer's plating tank and temperature control system.

For customized projects, the heater configuration is confirmed together with the plating process and equipment layout before production.

FAQ

1. What is an electric tubular heater?

An electric tubular heater is a resistance heating element enclosed in a tubular structure and used to transfer electrical heat to a liquid or other process medium.

2. Can an electric tubular heater be used in electroplating tanks?

Yes. It can be configured for electroplating and surface treatment tanks when the heater material and construction are compatible with the process solution.

3. How do I select the correct heater material?

The material should be selected according to the chemical composition, concentration, operating temperature and other conditions of the process solution.

4. Can the heater size and power be customized?

Yes. Heater length, diameter, heating capacity, voltage and installation configuration can be customized according to the application.

5. Can the tubular heater be integrated with temperature control?

Yes. The heater can be connected to a temperature monitoring and control system according to the plating equipment configuration.