What are the steps to replace the security door? What should I pay attention to when replacing the security door?

I believe everyone is familiar with the security door. It is the first line of defense against external invasion and unstable factors. With the security door, people can carry out their daily work and study with more peace of mind and maintain a stable living condition. Most families will choose to install security doors. So how should families without security doors be replaced? Many people may not know much about how to replace the security door. The following small series will introduce you to the four steps of replacing the security door, hoping to bring you some help.

Four steps to replace the safety door

Measure the size of the doorway.

Measure the doorway size first, and determine the opening direction according to the corridor. The size of the door opening should be larger than that of the installed door, leaving a certain gap (about 1.5-3cm) to facilitate debugging and correction during installation.

Correct the doorway and put the door on the doorway.

Correct the opening of the door. If the size of the doorway does not meet the requirements, it must be cut and leveled with tools such as shovel, steel chisel and cutting machine to meet the installation requirements; When installing, put the door in the doorway, plug it with wooden plugs around, correct the levelness and verticality, and debug whether it can be opened flexibly. Then open the door leaf, drill the installation hole through the door frame installation hole with an electric hammer, and fasten it one by one with expansion bolts.

The expansion bolt drilled into the wall.

The drilling depth of the expansion bolt into the wall should be ≥5cm, and the drill bit of the impact hammer should be consistent with the size of the expansion bolt. During the installation of the project, the owner or the constructor shall mark the horizontal line of 50cm or 100cm, and the floor tile or floor height shall be determined when the user installs it separately. After the door is installed, a certain amount of cement mortar (generally above 70%) should be poured into both sides of the door frame, and the user is responsible for mending the wall and pouring mortar.

The key point of the dark turning point

The door frame of the security door can be fixed to the wall with expansion bolts, or iron pieces can be embedded in the hole when building the wall, and welded with the door frame connector when installing; No matter what connection method is adopted between the door frame and the wall, there should be no less than 3 anchor points on each side, and the connection should be firm; When installing the security door, it should be straightened and hung, temporarily fixed after the size is appropriate, and then connected and anchored after correction and adjustment.

What should I pay attention to when replacing the security door?

Before replacement

Field measurement is more accurate.

When Bian Xiao visited the market, he found that some factories of local security door enterprises would provide on-site measurement, design and special-shaped door customization services for the order of replacing security doors. After measurement, they would place an order for production, and the cycle was about 10 day-15 day. Some foreign factory salesmen ask the owners to measure themselves. As long as the doors are within a certain size range and the warehouses are in stock, they can be installed immediately. If you want to customize, some manufacturers directly refuse, and some say it will take about 45 days.

It is necessary to measure the security door before making it. This is not only to determine the size, but also to determine the door opening direction, door lock position and style according to the actual needs and conditions of the owner's home.

Some consumers want to change the inner door into the outer door, which needs to be designed according to the actual situation. Not only the width of the corridor should be sufficient, but also whether it will hinder the opening of the door with neighbors. Some properties do not allow owners to change the direction of opening the door privately, especially if there are fire-fighting facilities at the door, which will block the facilities. It is suggested that the owner reach an agreement with the property before the exchange.

Installing

Removing the door will damage the wall.

Many owners who have replaced the security door report that there is at least a gap of two centimeters between the removed doorway and the door frame of the new security door that needs to be repaired. Some owners have doubts: since they have measured the size, why can't they make the door bigger and fill the gaps that have been removed?

Experts said that the wall damage caused by door demolition is inevitable, the damage size is uncontrollable, and there is no standard, which is determined by the owner's family conditions.

After the wall is destroyed, the repair process is actually not difficult. After the security door frame is installed, find a worker to fill the joint with cement mortar, then brush the interface agent and blow putty, so that the gap can be well covered. Chen said, you can also fill the gap with styrofoam first, and then block it with cement mortar. However, experts also reminded that styrofoam does not have much bonding effect, but is only used to block seams, and styrofoam will not increase the firmness of security doors.

After replacement

Four-step verification of substitution effect

After the replacement of the security door, in addition to seeing whether the paint surface is intact and the internal filler mentioned above, we can also check the door structure.

The owner can check the door frame and door; Supporting structure; Hinge; These four elements of door lock. First of all, the steel plate thickness of door frame and door leaf should meet the national requirements, the first and second door frames should reach 2.0㎜ and the door leaf should be1.0 ㎜; Class C door frame 1.8㎜, door leaf 0.8 ㎜; Class d door frame 1.5㎜, door leaf 0.6-0.8 ㎜. Secondly, the steel structure supporting the door leaf should be firm, which is the key to prevent the door leaf from deformation, ensure strength and prevent prying. The material thickness of the door leaf hinge should also be above 3㎜, which not only ensures the normal opening and closing of the door, but also has the function of anti-prying. Qualified door locks have corresponding test reports, which can be checked by the owner when purchasing.

Regarding the installation effect, Chen introduced that the following points should be paid attention to: First, whether the door slides at will after opening. "Where should I go to install a qualified door?" Second, when the door moves back and forth, there is no abnormal sound between the hinge of the door or the lower part of the door leaf and the door frame. Third, see if the lock switch is flexible. If there are difficulties, professional debugging is needed. Other car owners reported that the new keys and locks felt a little astringent when they were inserted and removed, which was caused by dust in the new keyhole. The owner only needs to blow pencil scraps into the lock hole for lubrication. But remember not to drop grease, or the keyhole will be blocked.

In addition, the expansion bolt is the main part of the fixed door, and the bolt must be combined with the cement mortar structure of the wall. During installation, the owner should also pay attention to whether the drilling depth of the construction personnel is enough, otherwise the stability of the door will be affected. If the bolt is 9㎝, then the hole punched in the wall should be 10㎝ deep, so as to ensure that the bolt is firmly combined with the wall.

The above is Bian Xiao's summary of the four steps and precautions for replacing the security door. I believe that after reading the four steps and precautions for replacing the security door, you have a certain understanding of the steps and precautions for replacing the security door! Bian Xiao also wants to tell you that if you haven't installed the security door or need to replace it, you can refer to the steps of replacing the security door given by Bian Xiao. If it is inconvenient for you to replace the security door yourself, it is better to ask a professional installation master to operate it.