Technology manufacturing inlet metal door. Metal doors manufacturing technology with their own hands

In this article:

In order for the house to be really a fortress, the entrance to it should block reliable metal doors - protection against unattended guests, cold winds and street noise. Input doors made of durable steel - a standard requirement that makes every man in the street to its own dwelling.

Despite the fact that competition in the market of entrance doors is high enough, here you can still find a niche: Recently, the demand has grown not only on the quality and reliability of door canvases, and a spectacular appearance (especially in elite new buildings, well protected entrances and cottage settlements ). Therefore, having thought of an interesting, stylish design and an assortment range of several models, you can enter the average price niche on a par with brand manufacturers.

However, as practice shows, a decisive factor when buying in 80% of consumers the price remains. Therefore, even "garage production" - with the help of a manual tool and mechanical machines, it is quite capable of bringing profits as soon as possible, which will make it easy to step up at the next level of business development.

• GOST 31173-2003 - steel door blocks. Technical conditions;
• GOST 23118-99 steel construction designs;
• GOST 5089-97 - locks and latches for doors. Technical conditions.

Equipment for the production of steel doors

1. Automatic lines

Apply on large plants with high performance from 200 doors / day and more. The technological process is fully automated, about 2 minutes leaves for the manufacture of one door leaf. High-precision technique provides the same geometry of the product, forming profiles, drilling holes for accessories and connecting fasteners, painting of the door canvase and filling in internal voids - everything happens automatically, with minimal hand-learning intervention.

Welding of the product is also automated due to the use special welding robots. Durable welding seam connections do not require additional stripping and grinding manually.

Pros: Automated lines allow 500-600 finished products per day with a minimum risk of marriage.

Minuses: The high price and cost of maintenance (lines are made to order, the cost starts from 6 million rubles). For the full work of such equipment, a large production area is required (from 1500 m 2), wherees besides the workshop itself, it is necessary to provide significant areas for storing raw materials and finished products.

2. Lines - semi-automatic (using manual labor)

A set of equipment and machines for the opening of partially automated production:

• Semi-automatic guillotine or metal cutting machine (plasma - Fig. 4, laser) - from 120,000 rubles;
• Listogibobic press - 70,000 rubles;
• Welding machines (include spot welding, door canvases, tick welding, final welding in carbon dioxide environment) - from 100,000 rubles. Can be replaced by conventional welding machines;
• Coloring equipment (painting gun, compressor).

Fig. 4 (plasma)

With this equipment, you can produce 15-20 doors per day. The required area of \u200b\u200bthe room is at least 250 m 2.

Pros: The cost is quite lifting for the average business - the price of a semi-automatic line is completely dependent on the configuration (from 400,000 rubles). But some machines can be replaced with simpler equipment, which will significantly reduce the starting capital, but will increase the amount of manual labor and, accordingly, the costs of salary workers.

Minuses: "Human factor" - the less automation, the higher the amount of marriage. In addition, the High Qualification Master, trained work and manual, will be required, and manually to ensure that production technology is fulfilled at all its stages.

3. Manual work and mechanical machines

Minimum equipment set:

• bulgarian;
• mechanical guillotine for cutting metal (Fig. 5);
• milling machine;
• lathe;
• auxiliary hand tool.

Pros: Minimum cost of buying equipment (from 60,000 rubles) and rental of premises (60-80 m 2).

Minuses: 2-3 doors per day are the maximum performance for such equipment. Similar mini production can only be focused on a low price segment. To avoid a large number of marriage, specialists are needed to work on metal.

Metal doors workshop

All major steel doors manufacturing technology should be carried out in separate rooms. Therefore, the production area should include:

• workshop acceptance and preparation of metal;
• workshop of steel sheets and profile rental;
• assembly and welding shop;
• paint shop;
• decorative and finishing (and if the finish is manufactured directly in the enterprise, and not purchased in the finished form - then the individual room for the technological line in its production) (Fig. 7);
• assembly and control workshop;
• finished products warehouse.

Of the special requirements - the presence of a fire safety system, finishing with non-combustible materials of walls and floors, good ventilation.

Technological process of metal doors production

The steel door manufacturing technology includes a specific sequence of actions prescribed in a special document (technological or route card), indicating:

• requirements for the quality of materials;
• rules for their transportation, storage and acceptance;
• the sequential process of converting the source raw material in the steel door block, its painting and assembly;
• complex of technical requirements for each process;
• control and quality control methods;
• the method of transportation, storage of finished products and other technical conditions (the manufacturing), which are compiled in accordance with the requirements of GOST 31173-2003.

The main stages of the production process of steel doors

1. Preparation of metal

Before you go for production, the metal is sorted. The marking is checked, the presence of deformations after rental or transportation is removed corrosion and scale. In the warehouse of raw materials and materials, metal rolling stored in a stack or on stable racks (at least 2.5 m height).

2. Marking and cutting blanks

The manufacture of the doors begins with the cutting of sheet metal according to the templates icons applied using kerners. For cutting of metal use:

• mechanical equipment (guillotine scissors, presses, saws);
• oxygen method (cutting on stationary machines with gas cutting or manual cutters);
• laser, plasma cutting.

3. Processing of workpieces

The profile for the door box is manufactured on bending equipment, where under the pressure of the press metal plate is given bent under the required angle form.

This can be both standard rectangular design and arched model. In the second case, the arcoid profile of the top of the door is passed through a rolling machine to give the desired shape. After rental, the profile is cut into the necessary parts.

The billets are aligned - to eliminate the irregularities and the burr is removed the top layer of metal in the cutting places. Opening is performed manually, using files or on special sawdust machines. After processing the workpiece, it is sent to the stamp machine, where the holes for the holes of various diameters are made under locks and accessories in accordance with the prepared maps.

4.Sorbing and welding

The assembly of the door leaf is carried out with the help of contact welding, which eliminates the deformation of the canvas and ensures the absence of welding seams. Sheets are welded to the frame, 15-20 mm deposit is left from the front, which will perform the function of the gunner. In the manufacture of metal doors, a multi-walled welding type is used. The density of the structure of the web is achieved by installing special rigid ribs.

Door locks are installed simultaneously with rigid ribs, in places reinforced with metal plates (the so-called "technological pockets"). A non-combustible basalt stove (alternatives: wood, mineral wool, glass gamble, polyurethane foam, polypropylene is used between the canvas with the quality of the seal and noise insulator.

The loop is welded to the assembled door, with the observance of the necessary gaps between the web and the door frame. The assembly is carried out in several types (on the markup, in the conductors, through copiers) and is controlled at each stage for compliance with the geometry so that if necessary, fix the defect.

5. Processing with paint and varnishes

After assembling, the workpiece goes on coloring. The paint is applied to the purified, polished and degreased surface in one of the following ways:

• inkjet
• pneumatic spraying (Fig. 13);
• spraying in the electrostatic field.

Nitro, powder, graphite, hammer paint of various colors is used - such a coating forms good protection that protects the door from corrosion and light mechanical damage. After drying, the thickness of the applied layer is monitored and the absence of visual defects - air bubbles, unpainted areas, cracks, divorces.

6. Sheathing with decorative elements

To give a high wear resistance and an original decorative effect, an additional protective coating can be applied to the surface of the workpiece - molded or laminated finishing panels, which are manufactured in the enterprise by cutting (automatic or semi-automatic) on ready-made patterns or purchased in the form of blanks.

Types of trim:

• leather, dermatin, vinylisco;
• wooden lining;
• LDSP;
• natural tree;
• thermal film is monotonous or with imitation of wood of various breeds;
• forging elements;
• veneer.

7. Installation of locks, accessories, quality control of the finished product

Cutting accessories and checking locks is performed manually. To avoid the characteristic metal knock on the metal when closing the door, a special shock-absorbing material is pasted to enhance heat and noise insulation on the door leaf - rubber or silicone rubber seal.

To control the quality of the assembly and the density of the doorway adjustment to the box, the finished product is installed on the control stand. In compliance with all requirements, the door is packaged and sent to the finished product warehouse.

Raw materials for the manufacture of steel doors

There are two technologies for the manufacture of steel doors:

• tube-coal, using rolling pipes bonded by electric arc welding;
• profileGibil - using bent rolled profiles.

Today, the second technology is most successfully used, where the raw materials for the manufacture of doors are ready-made sheets of metal rolling. Many believe that the thickness of the steel sheet in the metal door, the better. And this is not entirely true. Too heavy doors can lead to a mass of problems, for example, complexity in opening / closing due to high weight, rapid wear loops due to high load. Therefore, 2 mm is the top "Planck" for standard apartment doors. Each additional millimeter adds about 8 kg of weight.

Required accessories:

• locks;
• loops;
• valves / latches;
• pens;
• additional (closers, eyes, locks, blocking devices).

Business Metal Door Production Plan

1. It is planned to open a mini-plant for the manufacture of entrance doors of steel. Target group of consumers - construction organizations and private households.

2. For legal registration of the business, LLC was created on the general tax system with the following okvood species:

• 28.75.21 "Production of armored or reinforced safes, non-aggravated cabinets and doors";
• 45.25.4 "Installation of metal building structures".

For the production of metal doors and providing services for their installation, it is necessary to make a license, according to SNiP 11-23-81. The cost of execution of packets of documents and obtaining a license is about 35,000 rubles.

3. The production workshop is planned to be placed on 100 m 2 non-residential rented premises. Rental cost - 15,000 rubles / month.

4. The cost of buying equipment - 125,000 rubles:

• guillotine crank scissors NK3418A;
• mGL-2500 sheet bending mechanism;
• boring machine 2116k;
• abrasive-cutting machine;
• tDM-403 welding machine;
• kraspopult;
• bulgarian;
• additional equipment (hand tools, racks, exhibition stand).

5. Calculation of the cost of 1 product - metal door size 2180 * 1040 mm.

• sheet steel 2mm - 0.098 t * 31 600 rub \u003d 3096.80 rub;
• insulation (Minvata) - 0.2 m 3 * 1475 rub \u003d 295 rub.
• electrodes - 4 kg * 43 rub \u003d 172 rub;
• casting Castle - 820 rubles;
• loops, handle, peephole - 550 rub;
• circles cutting, grinding - 420 rubles;
• primer - 4 l * 87 rub \u003d 348 rub;
• solvent - 2l * 210 rub \u003d 420 rubles;
• paint - 2 kg * 460 rub \u003d 960 rub.

TOTAL: 7081.80 rub

6. Revenue income

It is planned to manufacture and install 3 doors per day at a 21-day working day. The selling price of the product is established by the method of holding a comparative price analysis on the market and is equal to 12500 rubles. Installation cost - 1200 rubles.

Predicted revenue per month: 63 pieces * 13700 rub \u003d 863 100 rubles / month.

Material costs - 63 pieces * 7081.8 rub \u003d 446 153.4 rubles / month.

7. Other costs of economic activity:

• rent - 15,000 rubles;
• electricity - 1200 rub;
• depreciation of fixed assets - 5750 rubles;
• advertising - 15000 rub;
• personnel salary (director, 5 workers and sales manager) - 65,000 rubles;
• salary taxes -24 375 rub;
• profit tax - 58 124.32 rubles.

Total: 184 449.32 rubles / month.

8. Financial results

Net profit: 863 100 rub - 446 153.4 rubles - 184 449.32 rub \u003d 232 497.28 rub / month.

Initial investments (equipment + license + material costs for 1 month of work + other costs) pay off for 4 months of work.

The armored doors of Chinese production presented on the market in most cases only look efficiently. They are produced from a thin metal metal, the thickness of which rarely exceeds 0.8 mm, and it can be opened with canning opening. Therefore, if you need a really durable and reliable design, it is advisable both from an economic point of view and in terms of efficiency to make it yourself.

Preparation of materials

Before starting work, you must perform measurements of the doorway and sketch a schematic drawing of the design. With standard width (800-900 mm), the door can be made single, and with a wider opening, it is advisable to manufacture a collection framework - an additional sash is added to the side.

The metal door consists of 3 main nodes:

For the manufacture of welded doors, the following materials are needed (the amount is determined by the dimensional size of the structure):

• Corner 50 × 50 × 5 mm - for the door frame.
• The profile square pipe is 50 × 50 and a thickness of at least 2 m (you can use the corner of the corresponding dimensions) - for the frame.
• Metal sheet thick from 2 to 5 mm - for the canvas.
• Steel loops (2-3 pcs.) - The amount depends on the weight of the door.
• Insulation - foam or mineral wool.
• Lock.
• Material for decorative sheat (at the discretion of the owner) - plywood, lining, veneer, plastic panels, etc.
• Consumables are electrodes (selected depending on the steel used, the diameter is up to 3.0 mm), the discs for the grinder, drill.

Step by step making door frame

Dimensions of the box must be less than the opening - 20 mm gap is provided between the ends of the walls and the design. This will correct the position of the door and avoid skew when it is installed.

Taking into account these gaps, corners are cut and laid out into a rectangular design on a flat plane (welding table or pre-tedded to the goat flatness).

The corners of the box should be equal to 90 ° - are checked using a joinery and measuring the length of diagonals. The design welding and the subsequent sweeping of the welds flush with the surface of the corners (for dense fitting of the door canvase) is performed.

Build and welding doors

Taking into account the size of the box, the blanks of a square pipe for the manufacture of the frame are prepared. Gaps between the box and the door frame:

• below and from above - 10 mm;
• from canopies - 5-7 mm;
• from the castle side - 6-8 mm.

As a result, the frame should be less internal sizes of a 20 mm box at height and 11-15 mm in width.

Phased door leaf manufacturing technology:

1. The chopped profile is laid out inside the box, the gaps are fixed (sweater materials are used - plates, discs for the grinder or wooden chips of the corresponding thickness) and are checked diagonal.
2. In one of the lateral profiles, a cut for the installation of the castle is made.
3. During the diagonals, the frame welding and stripping of the seams is performed.
4. The frame with the box is grabbed between themselves around the perimeter in 4-6 places.
5. Marking and cutting of the metal sheet. It is necessary to ensure a box of 10-15 mm, and from the side of the canopies - 5 mm. Taking into account the gaps between the frame and the box, these values \u200b\u200bwill be - 20-25 mm on the sides and 10-12 mm from the loop side.
6. On top of the metal sheet, the box with a frame is stacked.
7. Welding - performed by separate seams (length in the range of 40 mm, a distance of about 200 mm) The rotor from the middle to the edges is alternately from different sides of the door canvase. This will warn the possible deformation of the sheet and the design as a whole.
8. To increase the stiffness of the structure, horizontal and vertical profile blanks of a certain length are welded. In order to facilitate the decorative sheat, the door in the frame can be scored and consolidated wooden bars.

Welding door canopies and installation of the castle

Before installing the loops, the design turns over - the steel sheet must be on top. When installing canopies, it is important to comply with their alignment. The loops are welded to the leaf and to the box. Papers, with which the box and frame connected, cut off with a grinder. The door is revealed, and the canopies are boiled from the inside.

After that, all weld seams are carefully cleaned, and painting the structure. This will protect the metal from corrosion, so staining should be performed regardless of whether it will be done or the decorative finish will be performed.

On the door canvase, there are places for a locking well and a handle, drilling is performed. The mounting holes are drilled, the tank is cut into the tank, and the lock is screwed by bolts.

Also at this stage you can prepare a hole under the eye. It is drilled through the vertical profile in the middle of the door or shifts a little to the side and the opening is done only in the canvas.

Installation of metal doors

Mounting plates are prepared (6-10 pcs.) - You can make from the remaining sheet cropping, which was used for the door leaf. Details are welded to the box.

Installation steps:

1. Aligns horizontal and vertical door box. Fixation is performed using wooden wedges.
2. The level of door location is again controlled.
3. In the mounting plates and in the wall holes are drilled by a depth of 150 mm under the anchor bolts.
4. The first anchor is clogged on the side of the box where the loops are located.
5. Once again, the level of location is checked, if necessary, the design is equivalent.
6. The next anchor is clogged, the last thing is the average.
7. The fastening of the preliminary part is performed in the same sequence.
8. Metal doors are hung.
9. The gaps between the wall and the box are blown by construction foam.

After installation, you can proceed to the insulation of doors and finishing the selected materials.

Metal doors are manufactured according to various technologies, albeit according to a single principle. And you need to figure it out. Only in this case can you choose the optimal model, without focusing only on advice advice in stores. Before you basic information about the production of doors. Information and samples for the article were provided by the company for the production of steel doors "T-Steel".

Equipment and materials

As materials use sheet steel, profiles or corners of different sizes and thickness, set of components (door fittings: loops, handles, locks, eyes, etc.). The quality of the door depends on both the strength and thickness of steel and the quality of the accessories (primarily, shut-off mechanisms).

Materials are processed on the equipment of different types:

• Automated. Such equipment is used by enterprises that produce more than 200 doors for a working shift.
• Semi-automatic. These are cutting machines, welding machines, sheet bending presses, painting chambers. With semi-automatic production below, the percentage of marriage, but also the performance is less - up to 17-20 products on the same line.
• Mechanical. This is a set of hand tools: Bulgarian, turning and milling machines, special guillotine, etc. This equipment is used extremely rare. At enterprises more often prefer semi-automatic machines.

Automated lines allow producing more products per day, thereby reducing its cost. However, the percentage of marriage at such enterprises is high, and in improper quality control, the buyer can identify defects.

Process of production

Conditionally, the production of metal doors can be divided into four stages.

1. At the first stage, a box and canvas are made. The box is the outer part of the product, which will be subsequently inserted in the doorway, and on which the canvas itself will hang. Make it from the corner. Corners weld or bend. The cloth is the part of the door in which the lock is installed, and which performs protective functions. It is made in this way: create a frame from a corner (ribs can be used), then the steel sheet from one or two sides is welded to the frame.
2. In the second stage, a loop is installed on the box and the canvas, carefully unwinding the place of installation. In the canvas and corners make holes under the accessories and castle.
3. At the third stage, the product goes to the paint chamber, where it is processed. Processing is needed by any metal doors, regardless of what finish will be used in the future.
4. At the fourth stage, fittings are installed and placed the canvas from the inside and outside. In the process of finishing, the door can be insulated and install seals.

The finished product is packaged and sent to the warehouse, and then on sale.

Approximately making doors and under the order, however, the size and sketch of the customer are used here.

How to choose a door

Appearance, brand doors and fittings, the number of locks is not all that you need to pay attention to. Be sure to take a look or specify:

1. How thick steel was used for the door canvase. Too thin canvas tries even with a knife, and too thick will make the door in trouble.
2. What is the thickness of the steel in the corners that were used for the frame and the box. The strength of the structure depends on this.
3. Whether seals were used, and whether insulation was. The door without these elements will freeze in winter and skip sounds. She will not put it in the apartment or in a private house.

As you can see, it is enough to know the foundations of the doors production technology to choose the right model.

Do you need a normal iron door, and the prices in the market "bite"? There is an option to build it yourself. Let's look together how the metal door is done with your own hands, starting with the preparation of the tool, the purchase of material and the sketch sketch and ending with insulation and finishing.

Make the iron door is quite real.

Make a metal door with your own hands for an amateur task is quite real, but there is one nuance: you must freely work with a grinder and at least at the initial level to own the welding machine. But before making the door itself you need to prepare a tool and material.

Selection of tools

• Bulgarian;
• Welding machine;
• Screwdriver or screwdriver set;
• Electrode with a shock function or perforator;
• Round "drake" file;
• A hammer;
• Roulette;
• Kern;
• Level (preferably 1.5 m);
• Corolnic

Master tool.

In addition, you will need a variety of fittings for power tools. This refers to the discs for the grinder for metal, the cord brush on the grinder, drills on a drill, emery and other small things without which the manufacture of metal doors is impossible.

Purchase of material for making metal door

For iron doors you need to buy:

• Metal sheet thick from 1.5, up to 3 mm;
• Profiled pipe 40x20 mm - minimum 7 - 8 m;
• Corner 50x50 mm - about 7 m;
• Bar 40x4 mm - 2 m;
• Loops ordinary dad mom or hinged - 2 pcs.

If you do not have much experience in welding work, then it is better to take a sheet under the entrance doors thoroughly, at least at least 2 mm, and better 3 mm.Welding metal doors the point is not particularly complicated, but the slim sheet is very easy to burn through.

Material for metal doors

You still need a good smooth table or some kind of goats, make a metal door on Earth very hard, and for a novice master is not really real.

Making a sketch

Professional drawings on standard iron doors are now found, but the problem is that these documents were made according to GOST 31173-2003, that is, 2200x900 mm or 2200x1200 mm (for wide opening).

Professional drawing under the door welded from metal

The entrance metal door in the apartment or private house does not always comply with the standard, so it is better to make a sketch. Otherwise, on a non-standard opening you will have to either cut part of the slope, or somehow close the gap next to the door.

An example of a sketch for non-standard iron doors.

Kohl, we make the iron door with your own hands, then at the stage of creating a sketch you need to consider some tolerages below on the example they are shown:

• Starting dimensions of the doorway 216x90 cm;
• It is impossible to make a frame (Lutka) to the walls, as there will be no way to fill the mounting foam, so we leave 10 mm on the top edge on the foam, plus 5 mm thickness of the corner;
• Below, we make small threshings, respectively, 25 mm from the corner will be cut off, the total frame height along the internal perimeter remains from the corner;
• Over the sides, we also leave 10 mm per foam, plus 10 mm is a metal thickness in 2 corners, and the width of the internal opening is 87 cm;
• The steel door itself, or rather the frame under it, cannot be made close to the Lutka, if the house starts to "walk" and the Lutka slightly moves, then the canvas woven. Therefore, according to the outer perimeter, we leave a gap of 5 mm, respectively, it turns out 211x86 cm;
• Sheet take more (90x215 cm), as it will be superimposed on the part of the Lutka.

The tool was prepared, the material was bought, the sketch did, now you can start building the iron doors with your own hands.

Seven stages of assembling steel doors

You can make metal doors with your own hands only from the corner or only from the profiled pipe, but the mixed option is obtained more reliable and practical. The outer frame (Lutka) is better to cook from the angle of 50x50 mm, and the frame under the door leaf from the profiled pipe is 40x20 mm.

Stage No. 1. Welding the Lutka

First of all, cut off according to the scheme of the corner and fix them on the desktop or goat clamps. It is important here that the bottom plane was smooth, and the angles were connected under 90º. The rectangle box is checked on diagonals, if they are the same, it means, the corners will be straight.

Fixation of frame clasines.

It is not worthwhile to brew angles, they can be a story, first we grab at several points and again measure the diagonal, until everything is failing, you can still adjust minor inaccuracies.

Spot tack.

When coaling the angles, first we put all the vertical seams, and then go to the horizontal, so the metal will overheat less. Excessive part of the corner we cut out later.

Corner welding.

Now we turn the frame and check the plane with a long level or any smooth standard. No distortion and bends should be.

Check plane frame.

We welcome outdoor joints and immediately stall these seams with a grinder.

Welding outdoor seams.

As shown in the photo from above, we have not cut off a piece of corner from the inside, it must be removed, as it will interfere with the installation. To do this, turn the frame again and cut out the extra pieces of the grinder. Lutka is ready, you can now go to the frame for the iron door.

Cut out extra parts.

Stage No. 2. Frame under the door canvas

When cutting profiled pipes under the door cloth frame, first measure all the long parts, and then cut out short. Otherwise, you can not guess then, the big vertical racks will have to weld from pieces.

The slot to the lock is better to do immediately. To do this, measure the rack from the bottom of 1 m. And we make 2 vertical outbreaks on the dimensions of the castle, and in the middle of this strip cut the formation. To make it easier to break it easier, we make small cuts on them, the arrows in the photo indicate these cuts.

Primary fitting of the castle.

So that the frame of the door leaf clearly lay down in its place, fix the clamps profiled pipes from the inside of the lutki. Do not forget: 5 mm clearance should be left between the profiled pipe and the corner, for this we insert the gasket. As a gasket, you can use the same cuts of the corner.

Fixing the profiled pipe on the frame.

It is important here how to put Profiled pipes, on any such pipe there are welded seams, so this seam should "look" inside the canvas.

Welded seam profiled pipe.

When building a frame under the door canvas, the diagonal is no longer necessary, since we are "tied" to the outer frame. The angles are welded by analogy with the louting, that is, at several points we grab, and then weganize the joints from the center to the edges.

Welding door frame angles.

Here, while the frame is in Lutka, we weld the transverse ribs of stiffness, they are made from the profiled tube.

Fastening rigid ribs.

Now we remove the clamps, we remove the outer frame and cook the ends of the connections in the corners, after which they are stuck all the seams. Be careful, the metal is thin and easily roars.

Sticking welded seams outside necessarily.

Always control where you are top, bottom, loop and castle. At this stage it is very easy to confuse and then it will be difficult to correct the situation without losses.

Stage No. 3. List Fastening

First, we need to cut the sheet in size. From the door leaf frame, we leave 20 mm to the edge of the sheet (5 mm on the gap, plus 15 mm on the back of the Lutki). To cut off exactly on the markup, you can use a profiled pipe, simply secure it with clamps and cut the grinder over the edge.

Standard for cutting a sheet with a grinder.

We put onto the cut sheet of the door frame, check that everywhere it is clearly respected by the backrest and pointingly weld the profiled pipes to the sheet (step of about 100-150 mm). To the frame does not move during welding, it can be fixed by clamps.

Rama grab not along the perimeter, but diagonally. That is: they welded one point, then switched to the opposite and so for the other hand. Otherwise, the design may be a story.

Point welding of the door leaf.

Stage No. 4. How to privar loops

Illustrations	Recommendations
	Sheds We buy ordinary, such as dad-mom (dad with a pin). Before installing canopies immediately need to lubricate.
	From Karaya the canvas, it should be 20 - 25 cm to shed, both from above and below.
	Canopy should be slightly raised so that the sheet does not cling to the frame when opening.
	The canopy is set so that when looking from above, a 1 - 2 mm gap remains between it and the sheet.
	Before how to cook Construction, put the laying under the sheet (a piece of the same sheet). The clearance is needed for the rubber seal.
	Write a canopy.
	So that the canopy holds more reliable, you can breed a metal plate with an overlap on the frame of the web, but it is rather a recommendation than the rule.

Stage number 5. Cut the castle

In the door frame, the lock is already inserted, now you need to try on and place the locations of the propelles in the log.

Marking under the holes in the corner.

The holes for the locking well are drilled by a large drill, then bring to the desired size with a round drakel file.

Hole under the keyhole.

Holes in the corner under the lock itself are cut with a grinder and also processed with a file. Locks are desirable to close from the inside with a metal casing, it can be made of a profiled pipe or angle, the casing is necessarily welded.

The casing to protect the locks of the castle.

Now it remains to try on the lining on made Earlier holes and can be moved to facing works.

Mounting overlaid on the castle.

Step number 6. Facing and insulation

Cheaper and best to warm the iron doors with foam, as a rule, the PSB-C-25 slabs with a thickness of 40 mm are taken. The stove is cut out a little less opening, and the gap then foams the mounting foam.

Warming inlet door foam.

Mineral wool warming the entrance doors is not worth it. The fact is that any wool is afraid of moisture and after wetting sits down, so after a couple of years such a warmer will stop working.

From the inside, the design can be seen by any stove you like, from an OSP, to laminated MDF.

Lining from laminated MDF on the door.

You can also find more detailed articles on the insulation of metal doors.

The outer front of the doors can also be separated by a laminated stove, but it will be easier and cheaper to paint the metal of hammer paint, it is done like this:

1. The entire metal is cleaned with a cord brush (it is convenient to use a cord nozzle on the grinder);
2. The design is degreasing with acetone or gasoline;
3. The metal is covered with a soil under the previously chosen hammer paint;
4. 2 - 3 layers of paint are applied with brush, roller or spray paint.

Staining iron doors hammer paint.

Step number 7. Installation of metal doors

To secure iron doors to pre-trigger on the perimeter of the perimeter, the peculiar shanks from the 40x4 mm strip.

Shanks for mounting iron doors.

The design is installed in such a sequence:

1. Insert the log in the doorway;
2. The perforator through the shanks drill the deaf hole in the slopes;
3. Next, you can score metal crutches or fix the design with anchor bolts;
4. Hanging the door leaf;
5. Place the gaps around the perimeter of the luttiki by mounting foam;
6. The door is installed, now it remains to cut the surplus dried foam and equip the slopes.

So the iron door is installed with their own hands.

Output

As you can see on home "production," without professional schemes and expensive equipment, a good iron door was collected with their own hands and it cost it approximately cheaper than the factory analogue.

With a good decor, the homemade door will look no worse than the factory.

The high-quality door serves to protect your home from uninvited guests, and therefore should have a high burglar resistance. Door System Developers are constantly improving production technology, apply a combination of new design elements and materials in order to comply with this requirement.

Materials for doors

Steel construction consists of many elements made of metal with different characteristics. Metal selection for certain elements is carried out based on the design features of the system.

Door leaf

The door canvas of modern steel structures is made according to the framework technology.

Material for creating a frame

The frame is formed from the profiled rolled steel by welding. To create a frame, various types of profile are used from the most unreliable stamped thin-walled corner to modern hot-rolled square pipes.

Door sheat materials

Finishing materials today are presented very widely. They differ in both the operational characteristics and price. The most affordable doors finishing materials are MDF panels with lamination, veneering, anti-vandal plastic; Vinilisco and powder spraying. Vinilisor, as a doors upholstery material from the inner and external side, is used mainly in the most simple budget structures.

Elite metal doors are decorated with an array of valuable wood or a combination of an array with elements of artistic forging, stained glass and glass inserts.

Door platbands

The platbands are selected, based on the main decor of the door design. Often these elements are mounted on a specially created metal base welded to the door box. Such a combination provides not only aesthetics, but also safety. Steel platbands perform protective functions, overlapping access to intruders to assembly anchor bonds.