[China Glass Net] The automobile glass is heated in the heating furnace to near the softening temperature, and then the glass is quickly sent into the wind grid of different cooling strengths to unevenly cool the glass, so that the glass main viewing zone and the surrounding area generate different stresses. The surrounding area is located at the strong wind position of the wind dam, and is fully tempered. The position is good, the tempering strength is high, the main viewing area is in the weak cold position of the wind dam, the debris is large, the tempering strength is low, and the glass produced by this method is regionalized. glass.
Automotive glass is essential for automotive body attachments and serves primarily as a protective feature. There are three main types of automotive glass: laminated glass, tempered glass and regional tempered glass, which can withstand strong impact. The car glass is divided into four parts according to the position: front windshield, side window glass, rear windshield and sunroof glass; the front windshield country mandatory must be laminated glass, (some low-cost agricultural vehicle front gear is still Tempered glass or regional tempered glass) Side window glass is tempered glass, and rear windshield is generally tempered glass with electric heating wire.
How to fix the car glass?
Nowadays, there are many car lovers. Everyone cares about the various parts of the car. However, many people ignore the maintenance of glass. When there is a ruin in the case of a broken crack, there will be a lot of people in the situation. In fact, although the car glass does not need to be replaced regularly like some wearing parts, it is especially important to check regularly and repair after the damage. Today, I will introduce you to the glass repair technology on the market.
At present, the glass on the car is mainly divided into two materials, laminated glass and tempered glass. Laminated glass is a layer of colloidal film between the two layers of glass that does not completely crack and spread when damage occurs. Even in the event of a severe impact, relying on the middle of the adhesive film can ensure that the glass will not fall off and partially scatter under severe damage, and still maintain relative integrity. Because of this characteristic, laminated glass is required to be used on the front windshield in order to ensure the driver's complete realization and safety after the impact.
After being damaged, tempered glass will quickly diffuse into numerous small particles, and it is easy to fall off. It can be easily escaped in a critical situation, and the probability of stone impact on the side and back of the car is less than that of the front windshield. Therefore, tempered glass is widely used in Other than the front windshield.
Only the windshield can make up
Based on the above mentioned characteristics, the windshield used in the front windshield of the current model is laminated glass, and cracks can be repaired. In addition to the front block, the tempered glass at the surrounding windows will quickly spread or even fall off due to damage, so it cannot be repaired. So the so-called glass repair is for the front windshield service.
Under normal circumstances, the damage caused by the glass is nothing more than the pebbles rolled up by the side cars during high-speed driving. Although the stones are not big, but the speed is fast and the shape is irregular, the glass can often be shot out of the pieces in an instant. However, the range of cracks cracked by pebbles is usually small, and the diameter will generally be about 5mm. In this case, the owner should go to a professional maintenance store for glass repair as soon as possible. The earlier the time. However, if the main body of the damage exceeds 20mm, the repair effect will be poor, and the general store will recommend replacing the glass.
Isn’t the glass that is not recommended for repair really repaired?
Many friends will ask, a windshield is usually not low value, many people do not insure the glass alone to break the risk, a little larger damage is recommended to replace it is not too wasteful, if I will use it?
In fact, beyond the range of 20mm, as long as it is not exaggerated, it can be repaired, but the strength after repair can not be guaranteed. When the high-speed wind resistance is increased, or the car wash, rain, snow, sand and other windshields are frequently stressed, The strength of the glass is not guaranteed, and there are certain safety hazards. Here, our suggestion is not to repair more than 2cm, replace the new windshield as soon as possible, to avoid the use of glass to produce larger cracks.
What kind of damage is easy to repair
Since the damage is caused by the rolled up stones, the damage area is generally not large, but since the surface of the stone is irregular and the impact trajectory is not regular, the shape of the damage point is various. According to the professional, if the broken part shows a round outline, the damage is easier to repair and the repair effect is good, because the round broken contour can support the surrounding complete glass, compared with those that spread a lot of cracks. For wounds, it is easier to be repaired.
What happens if you don’t fix it?
Usually the glass breaks, the maintenance staff will recommend repairing as soon as possible, many friends will ask, since the wound has appeared, simply do it, and have time to repair it. In fact, this method is not correct. With the change of temperature during the day, the deformation of the glass will cause deformation of the glass, and the continued wind resistance will further erode the damage, and it will continue to bring pressure, and the damage may be amplified. If you miss the area of ​​the best repair, the repair effect will be greatly reduced, so it is recommended to find that the window is broken and should be repaired as soon as possible.
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