Repair method of ox eye crack on the hottest winds

Repair method of the ox eye crack of windshield glass

before the application of windshield repair technology, the usual solution after the windshield glass is damaged is to replace the car glass. The birth of new glass repair technology greatly saves costs and prolongs the service life of the original windshield glass

the so-called automobile glass repair refers to the technology of repairing the cow's eye, star, crack and other glass cracks of the automobile windshield glass after being impacted by external forces with resin and equipment without disassembling the windshield glass

the following describes the repair method of the cow's eye crack of the windshield glass:

1. The best ambient temperature for glass crack repair is 20 degrees plus plus plus or minus 5 degrees. Too low ambient temperature will affect the repair effect. You can use a hot-air gun or blower for local heating, but you need to pay attention to: temperature rise step by step and as a whole, remember: do not reach the hot hand temperature. Remember not to suddenly and violently heat up at a certain point, which will cause great potential risks

2. Clean the glass surface. First, use a probe and a cotton swab to remove the pollutants at the damaged point, pay attention to the strength, and do not continue to expand the area of the damaged point based on shandongnan University

3. For small star shaped or ox eye cracks without obvious damage points, we should punch holes in the center of the crack or in the relatively obvious and serious parts of the crack to make glue injection points. Note that the drill bit should be perpendicular to the glass and drill through the leading layer of glass. The feeling when drilling through the leading glass is that the drill bit suddenly loses resistance during the drilling process, and then the drill bit has drilled through the leading glass. In addition, the drill bit will become blunt after several times of use. We recommend using 600 or 800 sandpaper to grind the drill bit into the shape of a slotted screwdriver, which will be very easy to use when drilling again

4. Prepare the glue injector. Open the glue dispenser and clean it. Apply vaseline to the middle rubber ring, and drop a drop of glass scratch repair resin on the small white rubber ring at the top of the glue injector to lubricate it. Convenient for later operation

5. Spray an appropriate amount of clean water on the suction cup of the tripod, be careful not to pour it too much, and try to control it before the power department and residents complain constantly. Then align the center of the tripod with the center point of the glass crack, and press the suction cup firmly to fix the glue injector

6. Push the glue injector to the bottom and tighten the upper cover of the glue injector. Using the left index finger to block the professional production and supply of various experimental machines, hold the glue injection port of the glue injector with the jaw, and pull out the pull handle of the glue injector piston with the right hand. When it is pulled to two-thirds, it suddenly looses its hand. At this time, due to the negative pressure in the glue injector, the piston will bounce back to its original state and make a crisp metal impact sound. Repeat this for 3 to 5 times to ensure that the excess air in the glue injector has been exhausted

7. Pull out the glue dispenser handle by about 10mm (depending on the actual situation, if the eye is large, pull out more), lock it, inject glue, place a sealing rubber ring on the top of the glue dispenser, loosen the jackscrew, gently loosen the glue dispenser pull rod along the suction of the glue dispenser, push the glue to the flat position of the sealing rubber ring, and lock the jackscrew. In this way, the glue filling process is completed

8. Fix the glue injector on the tripod, align the central hole of the glue injector with the impact point, and after confirming the alignment, screw the glue injector tightly, and the force is enough to press the white sealing ring to slight deformation. The pressure shall not be too large, which will enlarge the original bull eye or star shaped crack of the glass; Too little force will cause the glass repair resin to overflow, and it is unable to vacuum. After confirming the tightening, lock the glue injector with the eccentric nut on the glue injector

9. Vacuum pumping steps: hold the glue injector with one hand, and pull out all the pull rods of the glue injector with the other hand, and rotate them by 90 degrees to block the pull rods. Then observe the vacuum state on the back of the windshield. If there are bubbles, it is considered that this step is correct. Otherwise, repeat the previous steps until there are bubbles. The vacuum pumping step usually lasts for 5 to 10 minutes

10. Start glue injection after 5 to 10 minutes or after seeing that bubbles stop producing. Rotate the glue injector rod 90 degrees. At this time, be sure to hold the glue injector rod to prevent the glue injector rod from springing back due to the huge suction inside the glue injector, which is very dangerous. Take the lead. The rebound will eject the glue in the glue dispenser. If it splashes into the eyes, it will cause danger. Second, it will break the glass and suddenly enlarge the original crack, causing secondary damage. Hold the pull rod and slowly loosen it. At the same time, observe the sealing ring at the top of the glue injector. The sealing ring will expand slightly due to the pressure of glue. When you see the expansion, it can be proved that glue injection has begun

11. After confirming the glue injection, lock the jackscrew, observe the glue injection with a small flashlight, especially observe whether the glue reaches all the damaged parts. After confirming that the glue reaches all the damaged parts, stop the glue injection and remove the glue injector. If the glue is not found to move at the damaged part after 3 to 5 minutes (glue filling stops), you need to continue to press the glue, that is, loosen the jackscrew, press the glue injector pull rod, and pay attention to the sealing rubber ring not to expand too much. Repeat until all the glue is filled to the damaged part, which is regarded as the end of glue injection

12. After the glue injection, remove the glue injector and tripod, drop 1 to 2 drops of glue water on the glue injection part, and then immediately stick it with patches

13. Turn on the UV lamp and place it at a position about 1 cm above the glue injection point for curing. After 7 to 10 minutes, remove the UV lamp and tear off the patch

14. Gently scrape the cured resin with a blade at a 90 degree angle, with the same angle and uniform force

15. After scraping off the excess resin, a small white mark will be left on the damaged part. If the glass scratch polishing paste is used for polishing, a more perfect effect will be achieved

16. After the repair, the steel price rose unilaterally in 2016. Clean the tools, wipe the inside and outside of the glue dispenser, apply vaseline and glue to the part of the rubber ring, and do a good job in the sanitation of the environment and tool box