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Anonymous users2024-01-24Get the oil and then the pencil lead, it's all sticky, get a hair dryer to blow on, or vacuum the cleaner. If not, let's change the lock cylinder. The security door has insurance, and you can find the after-sales service of the security door to deal with these.
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Anonymous users2024-01-23Disassemble the screws, take out the lock cylinder and wash it with hot water, poke it a few times with the key, and then dry it with a hair dryer, and then find sewing machine oil to get it, quickly.
Clean it with solvent (gasoline, diesel, etc.) and wash all the impurities. Adding some oil to the solvent will leave an oil film on the lock cylinder and play a lubricating role. Never use cooking oil.
As soon as I moved, I moved away.
The full name of the security door is "security door". It combines anti-theft and security performance. According to the provisions of the "General Technical Conditions for Anti-theft Security Doors", qualified anti-theft doors cannot be pried open within 15 minutes by using ordinary hand tools such as chisels, screwdrivers, crowbars and portable power tools such as hand drills, or open an opening of 615 square millimeters on the door leaf, or open an opening of 38 square millimeters in a semicircle of 150 square millimeters of locking points. >>>More
The security door of my house is not easy to open, I used cooking oil, and it was more difficult to open after a while, ask for help. >>>More
If the door lock cannot be opened, the keyhole should be dripping with kerosene or diesel fuel to lubricate it and dissolve the rust. If you still can't open it, just find a locksmith to open the lock.
That's the method everyone said, either put some pencil lead in the keyhole or a little oil in it, any sesame oil, cooking oil, machine oil.