High frequency welding H-shaped steel fire prevention is how to do？

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If you want to do a good job, you must understand its criteria. If you do it on your own, it will not only reduce efficiency, it will have the desired effect. The choice of a fireproof coating for high-frequency welding of H-beams is a good example. It also has its own set of criteria, only half the effort can achieve twice the effect. According to the thickness of high-frequency welding H-beam steel, the principle can be divided into two kinds, and then let us introduce it in detail.

The main principle of insulation of fire retardant coating for high frequency welding thin-wall H-shaped steel is that the fire retardant coating shrinks, and a lot of foam will be generated when heated. These foams form a maintenance film to isolate the profile from the external environment and prevent it from coming into contact with the necessary oxygen for extinguishing. Not only that, the texture of the foam is lax, and the heat can be transferred to the profile in the future, which has a very good insulation effect.

From a professional point of view, the coating absorbs a lot of heat when forming a foam, which has a cooling effect on the surrounding environment and contours, and impedes heat transfer. The volume of the coating is fundamentally unchanged, but the coating can delay heat transfer and extend the heating time of the profile.

In addition, it can be said that the coating itself is not combustible, and can provide very stable maintenance for the profile and prevent damage caused by high temperatures directly on the profile. Some components of the H-beam coating will produce non-flammable gases in the event of a fire. The response heats the profile to reduce the profile temperature and forms a good barrier. Although the maintenance layer is able to isolate oxygen, it is also very thermally conductive. Therefore, when the coating is applied, a thicker coating is applied to the H-shaped steel to achieve a satisfactory effect.

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