Characteristics and precautions of glass cooktop panels

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In the modern kitchen, the glass panel of the gas stove has won the favor of many families with its simple design and excellent performance. However, in the face of the high temperature and impact of daily cooking, this seemingly simple glass actually contains sophisticated material science and safety wisdom.

(1)、Material characteristics

When you touch the smooth panel on the stove, you are not touching ordinary window glass, but 1 kind of specially treated tempered glass.

1. high hardness

When ordinary glass is broken, it will form sharp fragments, which is very dangerous. The tempered glass through the quenching process (heated to about 700 ℃ after rapid uniform cooling), so that the surface to produce compressive stress, internal tensile stress. This stress structure brings three major benefits:

①. Intensity Multiplier

The impact strength is 3-5 times that of ordinary glass. It can withstand the collision, scratch and internal stress caused by sudden temperature changes in daily cooking, and is not easy to produce scratches or cracks.

②. safety fragmentation

Even if it is broken due to extreme circumstances, tempered glass will not form sharp fragments like ordinary glass, but will decompose into numerous small, round and blunt granular fragments, greatly reducing the risk of cuts or stab wounds and ensuring the safety of the family.

③. Enhanced bending resistance

The internal tension and the external pressure balance each other, so that the glass panel in the load (such as heavy cookware), anti-bending and anti-deformation ability significantly improved, so as to ensure the panel in the long-term use of the flatness and structural reliability.

2. heat resistance

The qualified panel can withstand temperature difference impact from 300 ℃ to 700 ℃. In daily cooking, even if the temperature of the bottom of the pot reaches 200-300°C, the temperature of the panel contact area is far below its limit. Moreover, in the professional test, the panel needs to withstand the severe test of sudden cooling from a high temperature state to room temperature to ensure its reliability.

(2)、Multiple safety protection design

The secret of safety lies not only in the material, but also in the careful structural design. A qualified stove panel is usually a sandwich-type composite structure:

1. top Level

The top layer is a high-strength glass layer processed by physical or chemical tempering process, and its hardness is 3-5 times that of ordinary glass. It is resistant to high temperature and impact, provides a smooth and stable operating surface for cooking, and is easy to clean and maintain daily.

2. intermediate layer

The middle layer is usually composed of aluminum silicate fiber, microporous ceramics and other high-efficiency thermal insulation materials and elastic materials. It not only

blocks the downward transfer of heat, protects the electronic components at the bottom, but also absorbs the internal stress caused by the change of cold and heat of the glass, prevents the panel from cracking, and is the dispatching center of temperature and stress.

3. bottom

The bottom layer is an explosion-proof film or metal back plate that fits tightly. When the glass is broken due to extreme conditions, the material of this layer can firmly fix all the fragments by strong adhesion and toughness, so as to avoid glass splashing and hurt people and minimize the risk. It is the final key guarantee for safety design.

(3)、Precautions

Despite the layers of protection, the glass panel may still be damaged in extreme cases. You need to be alert to the following scenarios when using it:

1. severe alternation of hot and cold

The high-temperature panel suddenly encounters local strong cold, such as wiping with a damp and cold rag immediately after overflowing the pan, or freezing food materials falling directly on the panel.

2. local overheating

Long time empty burning, the use of more than the pot bottom area of the fire, resulting in local heat can not be distributed and accumulated.

3. mechanical damage

The corners of tempered glass are the weakest points of its mechanics, and heavy objects falling or sharp impacts may cause breakage.

4. unstable installation

If the installation of the stove is uneven, the panel is subjected to uneven long-term stress, which may produce imperceptible internal stress and bury potential safety hazards.

(4)、Safe use guide

Security is ultimately in the hands of the user. Make the following habits to keep your glass panels as new as possible:

1. gentle cleaning

After cooking, wait for the temperature of the panel to naturally drop to room temperature, and then wipe with a soft damp cloth. Avoid the use of steel ball, strong acid and alkali cleaning agent.

2. eliminate temperature difference

Wipe the water stains on the bottom of the pot in time. When cleaning, do not shower the hot panel with cold water.

3. choose the right pot

Give priority to the use of the pan to ensure that the bottom of the pan is flat and clean, so that the heat is evenly distributed, and to avoid the sharp bottom of the pan to scratch the glass.

4. control fire evenly distributed

Adjust the flame or electric heating zone to match the size of the bottom of the pot to avoid the flame aiming at a certain 1 of the glass panel for a long time.

5. regular inspection

Observe the surface of the panel from time to time. Once new cracks, deep scratches or

dense bubbles are found, stop using it immediately and contact the after-sales service.

(5)、Frequently asked questions

Q: Is it normal to hear a "click" sound from the panel during use?

A: A slight "click" sound is usually a normal sound when glass or metal parts expand and shrink. There is no need to panic. However, if the sound is unusually loud or accompanied by visible cracks, be alert.

Q: What should I do if the glass panel is really broken?

A: Please keep calm and turn off the gas valve and stove switch immediately. Do not touch the debris directly with your hands. Contact the brand after-sales or professional maintenance personnel to deal with, do not disassemble themselves, so as not to cause greater risks such as gas leakage.

Conclusion

Technology gives everyday products beauty and convenience, but the real wisdom comes from our in-depth understanding of product characteristics and correct use. This glass panel carrying pyrotechnic gas is the crystallization of material science and safety design. It is strong, but it also needs our gentle care. Safety, never stop in the design and manufacture of products, but also in the daily use of every 1 of attention.