How the key is made and what the key can be used for

Key blank - metal (aluminum alloy, copper alloy, ferroalloy, etc.) sheet stamped by mold, or electroplating to beautify the decoration.

Key - made of locks, according to the length and position of the lock cylinder marbles, it is necessary to match the keys with different tooth shapes. As the saying goes, a key opens a lock. In fact, the same key in batches needs to be sold in various places, and the same place should not be duplicated as much as possible.

It can be used as a bookmark, and some people like to make a mark on the unfinished book to facilitate the subsequent continuation**, which can make use of the old key and save costs. This method of cleaning the refrigerator strip is also good, wrap the key with a rag, and then reach into the gap of the strip to clean it.

The purpose of the key, as follows:

Go static electricity. In autumn and winter, it is the time of drying, and our ** is dry, and then it will lead to static electricity in our clothes, how can we solve this trouble. This is where our keys come into play, and we only need to take our keys and rub them on our clothes a few times to take away the static electricity from the upper part of our clothes.

In this way, if our clothes are constantly static, we can use our keys to solve this little annoyance.

Open a beer. What if we don't have a beer opener when we want to drink beer at home, at this time, don't worry, our keys come in handy. We use my key to open the beer, and we can put the key under the serrated teeth on the bottom of the beer lid, turn it up, and turn the beer bottle as we pry it, so that you will find that the beer lid is easy to open.

That way, when we want to drink beer, we won't be bothered by the fact that we don't have a beer opener.

Other uses

Clean the crevices of the tiles.

There are often many stains that are difficult to remove in the cracks of the floor in our home, and at this time we can use the old keys that we don't need at home to clean the cracks of the floor. We can prepare a cloth to wrap our keys, because our keys are similar to the floor gaps, and it will be easy for us to wipe our floor gaps with this method, and you will find which stains are difficult to remove on our towels.

Dismantle the express. We often find that the tape on the outside of the express box is difficult to remove when we disassemble the courier, and if there are no scissors around us at this time, we can use our key to solve it. Because we have gears on our keys, it still has a certain effect on removing the adhesive tape.

The main materials used to make the keys are copper, zinc, aluminum, iron and other metals. A key or key is a tool used to pick a lock, which has been in ancient Egypt since 4,000 years ago. Nowadays, locks are generally divided into four categories: cylinder key, flat key, lever lock key and tubular key, but with the rapid development of lock technology, magnetic locks, semi-circular pole keys, double-sided keys, pressure keys and electronic keys such as magnetic cards, chip locks and biometric identification such as fingerprints and iris are also becoming more and more popular, in order to better security precautions.

Dating back to 700 AD, the key was very large, wooden, like an enlarged toothbrush, and was used to open the gates of the palace. Hundreds of years later, the Romans made smaller, metal keys. In fact, some people even wear keys that imitate Zen lead as decoration.

They use keys to lock boxes containing valuables. By the 14th century, the style of keys became artistic, and European locksmiths who were able to make elaborate keys became famous, and kings even invited them to make keys to castles.

In the 18th century, with the rise of cities and the increase of thieves, locksmiths began to make more practical and secure keys to prevent thieves from breaking the lock or forcing their way in. And now the key has developed to electronic induction, such as the key in the hotel room.

A key repentance is a tool used to unlock specific doors, locks, boxes, etc. Keys can be physical or digital, such as a password or fingerprint scan. Keys are generally used to protect personal or institutional property, documents, or confidential information.

In addition to unlocking, keys can also be used to lock and protect items.

The most basic function of a key is to unlock the door lock. At home, we unlock the door lock with a key to access our residence. In the office, we use keys to unlock filing cabinets or safes for access to sensitive documents or valuables.

In the car, we use the key to unlock the doors and start the vehicle. Keys can be used to open various types of locks, including socket locks, thread locks, rim locks, padlocks, and more.

In addition to the basic unlocking role, keys can also be used for security, by giving access to specific people or organizations. For example, in a company, employees in different departments may need to access different files and devices. As a result, they assign the appropriate keys and access rights.

At home, we may give specific keys to things like housekeepers and aunts so that they can enter to clean the house or feed pets, etc., when we are not at home.

In addition, the development of modern technology has made digital keys more and more popular. A digital key can be a password, a fingerprint scan, or facial recognition to achieve the effect of a "physical" key. This has been widely used in technologies such as smart homes, smart vehicles, etc.

The digital key provides greater security and is also more convenient. This new type of key can be accessed remotely and can be authorized to access specific objects from any location, such as remotely controlling a car on a global scale.

In life, keys play an important role as a tool to protect property and security. With the development of science and technology, the key has gradually become intelligent and digital, bringing infinite possibilities to our lives. <>