The full name of the security door is the "security door", which combines the security against theft and security. It is the "guardian" of everyone's safety at home, and is the first guarantee to enter and leave the house. Security performance of security doors is directly related to the safety of family property and personal life. At present, the products of the anti-theft door are jagged. Some businesses are like grocery stores operating multiple anti-theft doors. How do consumers identify materials and buy safe and secure doors?

First, choose the three major points of security door

A good security door can increase the safety of the home and how to choose it is a crucial issue.

(a) Select the appropriate size. Consumers should choose the right anti-theft security door according to the actual requirements such as the size of the door opening, the opening direction, and the color pattern. Check the appearance, the door surface paint layer uniform color, no scratches, bubbles.

(b) Check the quality of the door. Steel anti-theft door can be said to be the most widely used in the market, people use the most security door material. Most of the security doors that people are familiar with belong to this series. This type of door is cheaper and more reasonable, and its sales account for more than 90% of the total market sales.

Anti-vandalism function is the most important function of the anti-theft security door. At the time of purchase, the seller can be required to show the public security department's test certificate. At the same time should check the weight of the door, generally should be more than 40 kg, the door frame of the plate thickness should be 2.0 mm or more, and can remove the cat's eye, doorbell box or lock handle and other methods to check the internal structure of the door, door plate thickness should be Above 1.0 mm, there are several reinforcing steel bars inside, and the door is best equipped with asbestos and other materials that have the functions of fire prevention, heat preservation and sound insulation as fillers. Finally, the locks should be checked to see if the anti-theft locks used by the public security department are qualified. At the same time, steel plates with a thickness of 3.0 mm or more should be protected at the locks.

(C) From the "cat's eye" material: Zinc Alloy is safer than plastic, and copper material is better than zinc alloy. If you meet the size requirements of the premise, the general preferred copper cat eyes.

Buy a cat's eye should pay attention to observe the clarity of the cat's eye is clear, and now many unscrupulous businesses use recycled plastic to do cat spectacle lenses, clarity is not enough to say, usually continue to release toxic and harmful gases, seriously affecting people's health. The higher the sharpness, the more uniform the material, which is usually the new material.

Second, the security door to pay attention to the installation steps

(1) The installation of the security door should be adapted to the type of security door used.

(b) The installation time was chosen before the bricklayers were completed. Many people consider that there are many things to be handled before the completion of the basic decoration. They fear that the security door has been broken. They do not know that because the security door installation is generally a process that needs to be replaced, it will destroy the wall of the doorway. If it was installed before, bricklayers, Oil workers can take a good rest. The security door installed will have a protective film, or you can add a layer of protection yourself. If it is not deliberately bumped, it will not cause damage.

(C) After the security door is delivered, be sure to open the cardboard box for inspection and confirm that there is no problem before proceeding with the installation. A lot of users complained about the security door. They were mainly paint films. Some of the more prominent were the door frames and the door leaves with bump marks, which may be caused by long-distance transportation. They must be repaired or replaced before installation.

(4) When the security door is installed, if the door hole is not square or the size and the security door cannot be closed, the wall should be flattened first. If the anti-theft door is installed before the ground is processed, be sure to ask what the height of the worker's floor is after processing, and send the data back to the door factory so as to avoid the situation that the ground is too high during installation. Anti-theft door frames and walls should be closely connected, filled with polyurethane (expandable rubber) or cement, if the gap is large, it is best to add steel.

(5) The door frames of security doors can be fixed with expansion bolts and walls, or they can be embedded in the openings at the time of masonry wall construction, and welded to the door frame connections during installation. No matter which connection method is used for the door frame and the wall, each side should not be less than 3 anchorage points, and it should be firmly connected. When installing the anti-theft door, it should be straightened and lifted. After the size is appropriate, temporarily fix it, correct and adjust it, and then connect and anchor it.

(f) Anchor gaps should be sealed with swelling agents and covered with special plastic caps. If there is a gap, if you can enter the wind, if the wind is big and strange sounds, it will be terrible. Requirements and the ground plane clearance should not exceed 5mm.

(7) After installing the security door, it is necessary to check the keys, invoices and after-sales orders and other accessories and materials, and there should be no less key. A good security door should be easily and flexibly opened with a key, and the door should be flexible and free from jams, abnormal sounds, etc. during the opening of 90 degrees.

(8) If the door leaf and the door frame are equipped with anti-theft chains, it is necessary to check whether the installation of the anti-theft chain is firm and whether the handle is flexible and firm. Now security doors basically provide renovation keys, you can give them one, keep one for yourself. After the hard decoration is basically completed, the decoration key is recovered, and then the official key is used to open the door. The decoration key is invalid. However, to be on the safe side, it is still necessary to test whether it really fails.

Third, the daily maintenance of security doors

(a) When the key cannot be fully inserted into the keyhole when the door is opened, if it is in winter, first check whether there is ice in the keyhole; if it is in other seasons, check whether there is foreign matter in the keyhole.

(2) When a metal friction sound is heard on the switch door, a little dripping oil can be put on the hinge of the security door. If it is invalid, you can find a professional maintenance worker.

(3) When the security door is closed, the resistance is too large, and it is also possible to apply a little lubricant to the movable bolt.

(D) In ​​the installation of security doors, it is necessary to seriously fill the cement, so that the door frame and the wall between the effective and tight integration, this can also make the door and the door frame to maintain a reasonable fit, long-term use without fear of deformation.

(5) If it is difficult to insert the lock cylinder when opening the door, then it may be coated with a little graphite. Or insert the lock cylinder with a pencil lead.

(6) In the severe cold regions, the “wintering” problem of the security door is also very important because the temperature difference between the indoor and outdoor areas in the severe cold area is very large. When the hot and cold water flows, it is very easy to make the lock core of the security door damp and then freeze, and this should be avoided. This situation occurs. Before the arrival of winter, it is necessary to drop two drops of antifreeze oil in the lock cylinder, and in winter, it must be cleaned with gasoline or diesel oil. Unusable vegetable oil acts as a lubricant for the lock cylinder.

In order to ensure the safety of our homes, we must carefully select security doors and do a good job of installing and maintaining them so that we can use them with confidence and live comfortably.