The role of insulating rock wool panels in spray ovens

A spray oven is a piece of equipment used to surface treat materials such as metal, plastic and wood by heating them at high temperatures to cure the coating and improve the quality and durability of the product. The interior of a spray oven needs to be well insulated to ensure even temperatures, save energy, prevent fires etc. Insulating rock wool board is a commonly used insulation material which has the following functions.

1. thermal insulation:

insulation rock wool board is the main raw material of basalt and other natural ores, etc., after melting, using the international advanced four-roller centrifugal cotton making process, the basalt rock high-temperature dissolved thrown and pulled into 4 ~ 7μm discontinuous fibres. These fibres have many air pores between them, forming a three-dimensional structure with low thermal conductivity and high sound insulation coefficient³. Therefore, the insulation rock wool board has excellent thermal insulation properties, which can effectively prevent the exchange of heat between the inside and outside of the spray oven, reducing energy consumption and operating costs.

2. Fire retardant:

Insulation rock wool board is an inorganic material and does not contain any combustible substances. It can be used in environments of up to 1000°C or more without deformation, dripping or producing toxic gases³. Therefore, the insulation rock wool board has good fire retardant properties, which can effectively prevent fire or explosion accidents in the spray oven.

3. Sound absorption and noise reduction:

insulation rock wool board consists of irregularly arranged fibres, which have a strong sound absorption effect. It can absorb the noise and vibrations generated during the spraying process and convert them into tiny internal oscillations or dissipate them into minute amounts of heat³. Therefore, the insulation rock wool board has good sound absorption and noise reduction performance, which can improve the spraying working environment and the quality of life of the surrounding residents³.

4. corrosion resistance and anti-aging:

insulation rock wool board in the manufacturing process added a certain amount of binder, dust-proof oil, water repellent and other additives³. These additives can enhance the stability and durability of the insulation rock wool board and make it resistant to acid and alkali, salt spray, ultraviolet light and other characteristics³. Therefore, the insulation rock wool board has good corrosion resistance and anti-aging properties, and will not be deformed, cracked or fallen off in long-term use .

How to choose a good rock wool board

 

Rock wool board is an excellent insulation material, but the quality of rock wool board on the market varies, how to choose a good rock wool board? The following aspects can be used as reference.

 

Thermal conductivity:

Thermal conductivity is an important indicator of the performance of rock wool board, the smaller the thermal conductivity, the less energy is transferred through the material, then the insulation performance of the insulation rock wool board is also better.1 Generally speaking, the thermal conductivity of rock wool board below 0.04W/(m-K) belongs to high quality products.2.

 

Sound absorption coefficient:

sound absorption coefficient is a measure of the sound absorption effect of rock wool board, the higher the sound absorption coefficient, the stronger the material’s ability to absorb sound waves, then the better the noise reduction performance of the insulation rock wool board.2 The sound absorption effect mainly depends on the density of the rock wool board in the unit area, the greater the density, the better the sound absorption effect.2.

 

Moisture absorption:

moisture absorption is a measure of the moisture resistance of rock wool board, the lower the moisture absorption, the weaker the material’s ability to absorb moisture, then the insulation rock wool board in a humid environment will not lose its insulation effect.2 Most insulation materials absorb water, its insulation effect will be significantly reduced, because water has a high coefficient of thermal conductivity. Therefore, it is reasonable to choose a rock wool board with less than 5% moisture absorption.

 

Flame retardancy:

flame retardancy is a measure of the fire resistance of rock wool board, the higher the flame retardancy, the stronger the resistance of the material to flame, then the insulation rock wool board in a high temperature environment will not burn or drip phenomenon. Rock wool board is an inorganic material that does not contain any combustible substances and can be used in environments up to 1000°C or more without deformation, dripping or producing toxic gases . Therefore, it is safer to choose a rock wool board with a flame retardant rating of A.

 

Thickness and density:

thickness and density are two important factors affecting the insulation effect and cost of rock wool board, the greater the thickness and density, the better the insulation effect, but also the higher the cost. Therefore, in the selection of rock wool board, need to be based on the actual needs and budget for a reasonable match. Generally speaking, the thickness between 50mm~100mm and the density between 80kg/m3~120kg/m3 are more suitable for spraying ovens.

Conclusion

 

In summary, the role of insulation rock wool board in spray ovens is multi-faceted, it can improve the efficiency and safety of spray ovens, extend the service life of spray ovens and reduce the impact of spray ovens on the environment and the human body. Insulated rock wool panels are an ideal insulation material for spray ovens.

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