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Infrared Heating For Steel Paint Curing, Infrared Drying Solution For Water Based Paints, Inks, Adhesives and Coatings

Categories:IR Heating Applications
Author:E-DEN Lighting
Origin:E-DEN IR Lighting
Time of issue:2025-06-05
Views:0

(Summary description)Infrared Heating For Steel Paint Curing, Infrared Drying Solution For Water Based Paints, Inks, Adhesives and Coatings

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Infrared Heating For Steel Paint Curing, Infrared Drying Solution For Water Based Paints, Inks, Adhesives and Coatings

(Summary description)Infrared Heating For Steel Paint Curing, Infrared Drying Solution For Water Based Paints, Inks, Adhesives and Coatings

Categories:IR Heating Applications
Author:E-DEN Lighting
Origin:E-DEN IR Lighting
Time of issue:2025-06-05
Views:0

Information

Welcome to inquiry E-DEN IR Technology and we will provide professional drying solution and quartz infrared heaters for your applications. Quartz Infrared Heaters are high-efficient, energy-saving and environmental protection.

Infrared quartz heaters are made of transparent quality quartz tubes and high temperature resistant alloy heating

filaments. Quartz tubes as radiation body, when infrared heaters are working, the alloy heating filaments reach high

temperature in a short time as a light source and emit out lots of infrared rays through quartz tube radiation body,

meanwhile, surrounding objects will absorb these amounts of infrared rays directly from our quartz IR heaters and be

heated very fast.

Steel Paint Drying By Infrared Heating System

1. Advantages of infrared heating technology

High efficiency and energy saving: direct radiation heat transfer, thermal efficiency is 30-50% higher than traditional convection heating.

Fast curing: the coating surface is heated first, and the curing time can be shortened to 1/3 of the traditional drying oven.

Good uniformity: avoid defects such as sagging and orange peel through reasonable layout.

2. Absorption characteristics of organic coatings (2K coatings)

Typical curing conditions for 2K coatings: 120-150℃ / 15-25 minutes (infrared heating can be optimized to 5-10 minutes).

Recommended infrared wavelength: Medium waves (2.0-4.0μm), matching the absorption peak of organic matter.

The absorption peaks of organic substances (such as resins and curing agents) are mostly concentrated in the 2-4μm (medium-wave infrared) range, and this wavelength needs to be matched to achieve efficient curing.

3. Recommended wavelength selection and basis

Select fast medium wave (1.4-2.0μm) in the preheating stage and medium wave (2.0-4.0μm) in the curing stage.

Fast medium wave (1.4-2.0μm): takes into account the penetration of metal substrate and the absorption of coating, suitable for heating substrate and curing coating at the same time. For example, infrared radiation with a wavelength of 1.4-2.0μm can penetrate the metal surface and be efficiently absorbed by organic matter in the coating.

Medium wave (2.0-4.0μm): matches the absorption wavelength of the coating, and can quickly and efficiently cure the coating on the substrate surface.

4. Schematic diagram of the production line

[Feeding] → [Preheating zone] → [Main curing zone] → [Temperature Keeping zone] → [Cooling] → [Discharging]

Zone configuration:

Preheating zone: Fast medium wave quartz infrared lamps, power density ≥15kW/m²

Main curing zone: Medium wave quartz infrared lamps, power density ≥25kW/m²

Temperature Keeping zone: Medium wave quartz infrared lamps, power density ≥10kW/m²

5. Installation parameters

Lamp instllation distance: 100-200mm (adjustable bracket)

lamp and steel distance: 150-250mm (adjustable bracket)

6. How to distribute quart infrared heating for the steel coating drying

The quartz lamps of infrared heating system are distributed along the running steel plate, installed on the upper and lower sides of the steel plate, or the left and right sides. The lamps of infrared heating system need to be divided into different heating groups and each heating group can be switched on and off and temperature controlled separately to meet the heating needs of different

width steel plate.

7.What factors should be considered when designing lamp power?

Heating temperature, this is an important factor to design the heating power, and all quartz heating lamps should be controlled by PLC or SCR to adjust the heating temperature in the drying oven. Coating thickness and plate thickness, more thicker plate needs more heating power and we should calculate the biggest thickness plate as an important factor.

Plate width, this will be an important factor to design the heating length of each quartz infrared lamp and width of heating lamps group.

Plate speed, this is an important design factor, we have to calculate the heating time from entrance to exit and meanwhile the heating temperature can be raised up in the heating time.

Plate color, different colors have different efficiency of infrared absorption. The darker the color, the higher the infrared absorption efficiency; the lighter the color, the lower the infrared absorption efficiency. Therefore, the color changes of the steel plate need to be considered in designing of lamp power.

Air intake or exhaust flow, air into or out of drying oven will have a certain impact on the heating temperature, in order to make steel plate heating temperature more uniform, we need to consider this factor.

Other environmental factors, seasonal temperature changes, the heat preservation effect of drying oven.

Fast Response Medium Wave Quartz Infrared Heaters-Technical Datas

Twin tube fast response medium wave infrared heating lamp can be controlled and adjusted the output power by PLC or SCR regulator automatically, so we can have accurate（±1 ℃）IR heating temperature in industry process. The heating filaments can be desinged and work in 1200～1800℃ with 1~2 seconds fast response time, so the FMW IR lamp are widely used for fast heating application which needs heating temperature from 50～500℃.

Because of needing small installation space and flexible working position, our infrared quartz heating lamps are

popular for industrial customers to repalce air heating and other high energy consumption electric heating elements,

or customers prefer a combination heating solutions which includes circle hot air heating with fast efficient IR

heatings.

Medium Wave Quartz Infrared Heaters-Technical Datas

Technical Datas-Twin Tube Design

Twin tube is a better stable design for short wave, fast response medium wave, carbon medium wave and medium wave infrared heating lamps with high radiation density and high power intensity. The twin tube quartz sizes are 23×11mm and 33×15mm. The heating filament of infrared lamps can be designed by tungsten, Ni-Cr alloy and carbon fiber. In order to better convey and focus on the heated material all the IR radiation emitted from the lamps, the special gold reflector or ceramic white reflector will be coated and fixed directly on the quartz surface.