What if the lock won't open? What method can be used to unlock it quickly?

1, when the door lock can't be opened, handle it calmly, and remember to use forced or violent unlocking, which may damage the door, lock cylinder or key, except that the noise will affect neighbors.

2. Find a neighbor or a nearby supermarket to buy a thin knife, and then grab the door handle to keep the lock shaft (the retractable part in the middle) away from the lock groove to reduce friction. When the sharp knife is inserted into the gap of the lock slot, hold the lock shaft and apply force to the lock shaft freely. It can be opened in most cases.

3. Drill a circle of holes in the lock box with the electric drill on the door, and then pry the drilled holes open with a screwdriver. Then you can see the safety mechanism stopper inside, and use a screwdriver to pull the safety plate.

4, you can find a professional unlocking company to unlock, like this unlocking company generally has special technology and unlocking technology, but you have to pay for it yourself.

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How to choose a door lock

1, look at the lock material. Generally speaking, its materials are stainless steel, copper, aluminum alloy and so on. Stainless steel lock has high strength, strong corrosion resistance and no discoloration, but its forging performance is not good and its style and color are relatively single. Copper has superior mechanical properties, and is generally used to make European-style high-grade door locks, with high price and grade.

2, look at the lock surface treatment. Generally speaking, its surface treatment process can be divided into electroplating, spraying and coloring. This surface treatment is equivalent to a protective film, which not only plays a decorative role, but also plays a protective role. It can play the role of anti-corrosion and anti-rust, and can make the lock more beautiful and durable, with a longer service life. For locks with good quality, electroplating technology is often used.