Updated 09/24/2017
Today, glass-ceramic stoves have begun to replace conventional ones due to many advantages: ease of cleaning, indication of the heat of the tile, power. There are practically no problems with them, however, with strong blows or excessive heat exposure may cause cracks.
And if someone else is lucky, and they only have a small crack in the corner of the surface, for others, the defect can cover the entire cooking zone.
Why are such cracks dangerous?
- They can lead to a general failure of work;
- Pass excess heat;
- Spoil appearance plates;
- Can crack even more, leading to the complete destruction of the glass;
- Contact with the stove may result in electric shock.
Why did the hob crack?
So, you found an ugly fault on the surface of the plate. Where could he come from?
Do not forget that the second two reasons are most likely caused by a factory defect or improper assembly of the plate. It happens that the surface is placed close to the edges of the plate, and when it expands, it begins to burst.
Be that as it may, you do not need to leave everything as it is and continue to use the stove carefree. First of all, follow the safety rules:
- Avoid cooking on panels that are cracked;
- Use the right cleaning products hob;
- Do not touch metal pans with wet hands to avoid electric shock;
- Do not act on the crack yourself;
- Do not attempt to make repairs yourself.
If you have such a defect, you must definitely call the master. If the stove has not yet expired warranty period, then you are relatively lucky, and all is not lost. Take a photo of the crack (just in case), and contact the service center for help:
- Call the master at home - he will be able to inspect and decide whether the surface is repairable. By the way, for this you may need a photo - some experts prefer not to believe in words just like that;
- If the warranty has not yet expired, the surface may be taken for examination to determine the cause of the breakdown;
- If a factory defect or other reasons beyond your control are found, you will either change the glass ceramics or even replace the stove with a new one (perhaps with a small additional payment);
- Has the warranty period expired? You can contact not the corporate center, but private companies involved in the repair of equipment. Their masters will also help identify the source of the defect and get rid of it.
But be prepared for the fact that if the crack appeared due to an impact (i.e. through your fault), you will have to fork out either for repairs or for a new model. It all depends on the specific case. And one more piece of advice: be careful with the technique - safety rules are above all!
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Hi all.
I decided to write about it, because this happens to many, but there are either no solutions on the Internet, or I did not find it.
I will say right away that the most correct thing would be to change the glass or surface assembly, but if such a solution does not work for some of you (like me), then this post is for you.
It is most likely impossible to give the surface its original state and mask the crack, but it is quite possible to "leave" it in the ranks.
I have a top Bosch induction model with infrared sensors temperature control, so I really wanted to keep this particular panel (especially now they are no longer on sale). The dealer asked for 25 thousand for the glass, which is somewhat ... a little expensive. For this money you can buy a full panel. So I decided to try to glue.
Some information about glass ceramics: it is not glass, or rather not ordinary silicate glass, but quartz glass. And the properties of quartz glass are different. For example, it can be locally heated to high temperatures and immediately cooled (even tempered glass will burst), and glass ceramics can also be processed.
From this follows the method of soldering quartz glass. For example, crushed silicate (ordinary) glass. Since quartz can withstand temperatures up to 1200 degrees, and silicate melts already at 600 degrees. It didn’t work out for me, because when the crack is dry filled, the burner flame simply blows out the crushed glass, and when using a liquid base, I used silicate glue, then the silicate glue just boiled from the flame, foamed along with crushed glass and again, soldering did not work.
I gave you the info - whoever wants, go for it.
Adhesives with satisfactory adhesion to glass:
1) Cyanoacrylate (superglue). does not work for us, because Maximum temperature use 80 degrees
2) Epoxy resin. can be used except for heating zones. temperature up to 280 degrees, but when heated, releases toxic substances
3) Silicate glue (stationery, liquid glass)... well-known glue since childhood. Almost perfect for our needs! and we will use it
4) Silicone sealant- temperature up to 200 degrees. there are heat-resistant options with temperatures up to 300 degrees, but they are only brown
I will say right away that I used all three suitable options.
I started with silicate glue. The initial result pleased me, but ... the seam did not stand the load test. As a result, I did this: first I used silicate glue along the entire length of the crack, then I strengthened the rigidity in three places (where there are no burner zones) by gluing pieces of ordinary glass onto the silicone, and then I restored the missing fragment epoxy resin, just pouring it there (along the way, gluing another small area of aluminum, since there was a cobweb of cracks in this place).
I have been using it for almost a week: everything is ok, except for the aesthetics. In parallel, I'm looking through Avito in the hope of finding a similar (similar) panel.
They are popular: they have heat indicators, are easy to use, and easy to care for. But often because of strong mechanical damage or due to prolonged heating, defects such as cracks and scratches occur. The amount of damage can be different - from an inconspicuous crack to cracks that occupy the entire surface area.
crack on hob
Such defects are dangerous, namely:
- lead to malfunction of the device;
- the incandescent temperature rises;
- the external data of the equipment is corrupted;
- faults can increase, which will lead to the complete destruction of the glass-ceramic layer;
- plate may miss electricity and hit the person.
Causes of damage to the hob
If faults were found on the hob, then this was preceded by the following factors:
- A sharp, strong touch to the surface of any objects. For example, you can drop a heavy pot, which is a common cause of glass ceramic breakage. The fault will look like a hole in the center where the blow fell, and the branching of the cracks.
- The stove was very hot due to the long operation of several burners that worked on full power. Usually the defect appears with a crash and can spread in different directions.
- It happens when the stove was not installed correctly, and the powerful voltage supplied to the technique destroys the hob. The surface begins to crack from the central part, after which the defects diverge, having sharp corners.
- Point damage, such as a dropped knife.
- Tearing off dishes that have stuck. For example, a frying pan or pot has been placed on a sticky, uncleaned hob. When heated, the dishes are glued, and it is possible to tear them off only with a fragment of glass-ceramic.
- Escaped jam and sugar syrup are very difficult to remove from the stove. The heated sugar, upon contact with the surface, penetrates into the structure of the glass-ceramic material. When cleaning the plate, the surface is damaged, chips appear.
Important! The last two reasons are caused by manufacturing defects and non-compliance with the rules when assembling the model. Common cases are when the surface is mounted very close to the edges, and during the heating process it bursts.
It should be remembered that faulty equipment powered by electricity is dangerous for any use. There are some rules where safety must be observed:
- Any cooking on panels that have burst should be avoided;
- Means for cleaning cooking surfaces must be specially designed;
- It is not recommended to touch metal utensils with wet hands, there is a risk of electric shock;
- Do-it-yourself repairs can lead to a short circuit.
What should I do if there is such a breakdown as cracks and scratches?
To get rid of such troubles as a large chip or crack, it will be more reliable to replace the hob with a new one. Leaving everything as it is is also an inappropriate option, because the integrity of the equipment is violated, and the chip can turn into a big break. Gluing the panel with your own hands is the most economical way. To do this, you need a material that will hold the strength of glass ceramics and will not allow cracks to spread further, will withstand high temperatures.
Step-by-step guide: how to self-glue a hob that has a crack or chip.
Tools and materials:
- silicate adhesive.
- Silicone.
- Rectangular pieces of glass, approximately 4x9 cm.
- Epoxy resin.
- Rubber spatula.
- Aluminum plate, the size is selected in accordance with the dimensions of the crack.
Work order:
Aluminum plate located under the chip
How to remove scratches from the surface of the plate
Appliances with a glass hob need special care. If you do not follow the rules for using the device, scratches may occur on the plate.
You can remove scratches from a plane in the following ways:
If more serious defects occur, it is better to contact a qualified craftsman. It is recommended to check the warranty period, if it has not expired yet, take a picture of the damage and call the service center:
- You will need to call a home repair specialist to inspect and make a conclusion whether the surface can be restored.
- If the warranty period has not yet expired, the surface must be taken for an examination, which will determine the cause of the destructive effect.
- If the marriage turned out to be factory, the manufacturer is obliged to replace the glass-ceramic element or the entire stove.
- When the warranty is no longer valid, you should visit a service center or repair shop.
Happy owners of glass-ceramic stoves are usually very satisfied, because the device saves energy. And also how accurately and quickly the temperature of the burners is controlled.
However, this type of kitchen appliances has one weak point - the hob. It is a layer of special heat-resistant glass, which under certain conditions can crack.
Cracks in the hob are one of the most common failures in glass-ceramic stoves.
Causes of Defects 
The main cause of damage is heavy objects falling on the hob. Usually this is a frying pan or pan that has fallen out of your hands.
However, it also happens otherwise: the induction hob endures all the vicissitudes of fate for a long time. And then suddenly it cracks for no apparent reason. This is due to the fact that destructive loads in the past led to the appearance of microdamages in the material, not visible to the eye . And at some point, the inevitable happened, after which the glass-ceramic hob could not stand it.
Important! An additional source of risk for cooking surfaces is the use of incorrect detergents when cleaning them.
It happens when using abrasive materials that scratch the surface. Although the damage may not be visible to the eye, it will eventually show itself.
If the glass panel is cracked, it must be replaced. Let's figure out how the glass on the hob is replaced.
Replacing the hob 
People faced with such a need often have a number of questions. We have prepared answers to them.
Where to go to replace the hob
Did you find that the glass has broken or cracked on its surface? And don't know what to do? To change the panel, you should contact the experts!
There are special service centers for the repair of household appliances.
These may be representative offices of those companies that made your stove. Major brands such as Hotpoint, Bosh, Maunfeld necessarily have branches in all major cities.
You can also contact one-stop appliance repair centers.. They work with a wide range of breakdowns of products from different companies.
Important! Before you turn to the help of a service, make sure that it has direct access to the manufacturer of your electric stove.
After all to replace the hob, you need to use a branded glass-ceramic hob. These are not sold in the public domain, therefore, they can only be purchased from the manufacturer.
How glass is replaced 
Installing a new hob to replace the one that cracked occurs according to the following algorithm.
Application
You can usually leave a request at the service center remotely. For example, by phone, at the operator. He will tell you exactly when to wait for the master.
Diagnostics
Always carry out a damage assessment before starting work. Even if everything seems obvious to you, there may be some hidden pitfalls. It is better to trust a specialist in this matter.
Coordination of upcoming work
After diagnosis the master tells the client what exactly needs to be replaced. It also specifies what procedures are to be done, how much it will cost.
The next stage will begin only after you know all the details and agree with the plan for the upcoming repair.
Repair
If we are really talking only about replacing glass that has cracked, then the process will take several hours. From the outside, it looks pretty simple. However, it requires the use of special equipment, branded spare parts and good skills.
Reception of work
The final part of this whole process is to check how the surface works.
Important! Keep in mind that service centers usually give a guarantee on their work for a period of 1-2 years, depending on the specific company.
Surface replacement cost 
The figure consists of several main components: the price of the necessary spare parts, the cost of work. There may also be an additional surcharge for the urgency of the repair. But service centers usually carry out diagnostics for free.
First, the cost of spare parts is taken into account. It depends on the specific company. manufacturer of kitchen appliances. AND it can be equal to approximately from 10,000 to 19,000 rubles. Secondly, the complexity of the work to be performed is assessed. Immediate price repair work usually in the range of 2.5-4 thousand rubles.
Thus, the cost of replacing the hob is approximately 50-60% of the price of a new stove.
Is it possible to replace the panel yourself 
This question usually arises in people immediately after they get acquainted with the cost of work. She is really big. However, this is exactly the case when the miser pays twice. Trying to save money and install a new glass top on your stovetop yourself can be very costly for several reasons.
Difficulties with finding and buying a new glass surface
These are not for sale in the public domain.. It is difficult to find an analogue - usual strained glass won't fit here. After all, it is not intended for specific point thermal loads that characterize the operation of a glass-ceramic stove. Therefore, it can suddenly burst or even shatter into many small fragments. Be sure to use a branded hob.
Sometimes old panels are sold as spare parts from devices of this type that have become unusable. Their use for repairs is less dangerous.
However there is no guarantee that a used panel installed today will not become unusable tomorrow. After all, it must have been subjected to the most different loads. Most likely, cracks on such a surface will appear very quickly. So, you will again face the need to replace it.
Replacement work requires special skills and equipment
This process takes relatively little time and therefore seems simple from the outside. But this is not so, it requires considerable qualification. Inexperience can break the plate. Or incorrectly assess the essence and causes of the breakdown.
Important! If cracks or other defects appear on the hob, you should contact a good service center.
Only professional masters will provide you with a guaranteed successful result in the shortest possible time.
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The requirements for sealants for the assembly and repair of kitchen appliances are outlined. The advantages of Dow Corning Q3-1566 heat-resistant adhesive-sealant are considered, recommendations for its use are given.
Kitchen appliances and adjacent furniture are often exposed to water and products of a liquid consistency, which leads to their deterioration and premature failure. To avoid this, when industrial assembly, repair and installation of hobs, ovens, gas and electric stoves Special attention connections must be sealed.
The simplest and most technologically advanced way is to use, which must meet the following requirements:
- the ability to glue and seal various materials in any combination;
- heat resistance;
- durability.
The use of sealants based on organic polymers leads to a decrease in reliability and a reduction in the service life of products. Therefore, manufacturers of kitchen appliances recommend the use of special high-temperature sealants that can work for a long time and have excellent adhesion to various materials.
A special heat-resistant silicone adhesive-sealant meets a wide variety of sealing requirements at the stages of assembly, repair or installation of kitchen appliances. cured at room temperature, it turns into a tough, rubbery solid with exceptionally high performance.
Advantages of high temperature sealant :
- has high adhesion to various materials;
- has a paste consistency, does not drip when applied;
- hardens at room temperature;
- maintains stability and elasticity in the temperature range from -50 °С to +275 °С with short-term increases up to +350 °С;
- resistant to chemically aggressive substances;
- issued in various options packaging - 310 ml, 20 l, 190 kg.
One component heat resistant sealant silicone-based sealants last longer than conventional sealants, guaranteeing the quality and durability of kitchen appliances.
