Heating lamps are important components used in industrial furnaces to provide heat and realize heating functions
1. Main types:
– Quartz infrared heating lamps: composed of quartz glass tubes and internal heating wires. Quartz glass has good high temperature resistance and infrared transmittance, allowing infrared rays to efficiently penetrate and act on the heated object. This type of heating lamp has a fast heating speed and high thermal efficiency. It is widely used in various industrial furnaces, such as drying furnaces, paint ovens, etc., and is particularly suitable for occasions with high temperature uniformity requirements.
– Halogen infrared heating lamps: Tungsten filaments are used as heating elements and filled with halogen gas. The presence of halogen gas can recycle tungsten filaments and extend the service life of the filaments. The proportion of infrared rays in the light it emits is relatively high, and it has strong heating capacity. It is often used in small industrial furnaces or local heating scenarios.
– Carbon fiber heating lamps: Carbon fiber is used as the heating material, with the advantages of fast heating, high electrothermal conversion efficiency, and energy saving. Carbon fiber heating lamps are high in strength, light in weight, and not easy to damage. They have good stability in the long-term use of industrial furnaces and are suitable for various industrial drying, curing and other process processes.
2. Working principle: Industrial furnace heating lamps work based on the principle of thermal radiation. When current passes through the heating element of the heating lamp, the heating element converts electrical energy into thermal energy and generates a large amount of infrared radiation. These infrared radiations spread in all directions. When encountering the heated object, the heated object absorbs the energy of the infrared radiation, thereby increasing its own temperature. Different types of heating lamps have different materials and structures of heating elements, resulting in differences in their heating efficiency, radiation wavelength and other characteristics, but they all use this thermal radiation method to achieve heating of objects in the industrial furnace.
3. Application scenarios:
– Metal processing industry: In metal heat treatment furnaces, heating lamps are used to heat, quench, temper and other heat treatment processes for metal materials, which can accurately control the heating temperature and time and improve the performance and quality of metal materials. For example, in some small metal parts processing companies, using quartz infrared heating lamps to perform local heating treatment on small metal parts can meet specific process requirements.
– Plastic processing industry: In the barrel heating of plastic injection molding machines and the head heating of plastic extruders, industrial furnace heating lamps can provide stable heat to ensure that plastic materials can be melted and formed smoothly. Carbon fiber heating lamps are widely used in the plastic processing industry due to their rapid heating characteristics.
– Coating industry: In equipment such as paint ovens and spray booths, heating lamps are used to accelerate the drying and curing process of paint and improve coating efficiency and quality. Infrared heating lamps can quickly dry paint without affecting the color and quality of the paint, reducing waiting time during the coating process.
4. Selection factors:
– Heating power: Select a heating lamp with appropriate power based on factors such as the size of the industrial furnace, the volume of the heated object, and the required heating temperature. If the power is too small, it cannot meet the heating requirements; if the power is too large, it may cause energy waste and equipment overheating.
– Wavelength range: Different heated objects have different absorption wavelength ranges for infrared rays, so it is necessary to select a heating lamp with a wavelength that matches the absorption characteristics of the heated object to improve heating efficiency.
– Service life: The operating environment of industrial furnaces is usually harsh, and heating lamps need to have a long service life. When choosing, you should pay attention to factors such as the material quality and manufacturing process of the heating lamp, and choose products with reliable quality and long service life.
– Installation method: According to the structure and design of the industrial furnace, choose the appropriate installation method of the heating lamp, such as fixed type, adjustable type, etc., to facilitate installation and maintenance.
