What is a profile?
1. Define profiles:
The meaning of the profile in a lexical sense is the fixedness of the section in a certain length
2. Types of profiles:
A. Open profiles:
Like belt, beam, fittings, studs, corners, hashes, foursquare and ...
B - closed profiles:
Such as tubes, cans, door and window profiles, pvc profiles, electric shutter doors profiles and ...
The profiles are present almost everywhere. In the industry and in the building and road construction and ...
A large portion of the profiles is used to make doors and windows of iron.
Square profiles and rectangles with small sections are used as metal fences for the windows and doors of the house, the sidewalks, as well as fencing, from the walls of factories and enclosed walls and fencing of pavements and streets.
Square profiles and rectangles (cans) with larger sections, known as columns, are widely used in industry and building. These profiles are constructed in square sections and have a thickness of 1.5 to 8 mm. They can use building columns and metal skeletons. Also, if these profiles are made with reliable physical properties, they can be used to build trailer chassis and tankers.
The profiles of square and rectangular cans are also used in the automotive industry.
The square canister profiles are also used to make base tables and chairs.
Profiles that are z-shaped are often used to cover the roof of a nave.
Angular profiles and studs are manufactured using cold rolling. The angular profiles can be used to construct the frame of large iron doors and the types of metal molds used in machinery. Small studs are used in shutters in shops.
Profile production process
The main work of the tubes and profiles is to turn the steel sheet (roller) into a cold rolling method to the final product with different shapes and dimensions (open and closed profiles). This process includes the steps described below:
1- Raw materials:
The raw materials used by most factories before the launch of Mobarakeh Steel were from European countries and Japan, but most of it now comes from Mobarakeh Steel, and partly from Central Asia, Brazil, Europe and Eastern Europe.
The sheet should have certain chemical compositions and, consequently, have good mechanical properties, so that it does not cause problems for the manufacturer when produced for the manufacturer. Consumables with ST37.2 standard or JIS G 3131 BP or G3132 have chemical compounds (silica with 0.35, carbon with 0.3 to 0.1, sulfur 0.04, phosphorus 0.04, manganese 0.5) and is recommended for such products. Except in special cases. Steel sheets are placed in the production process after entering the Weighing Plant and according to their dimensions and their consumption in different parts.
2- Cut the coil to the bar
The cups purchased on cutting machines are cut into strips of a specified width. These devices, according to the order and operation, have different parts, which are sometimes automatic and some are semi-automatic.
A cutting device usually has collar storage parts, a carrier table, a bumpers, a collar, and an opening system for collar crowns, a side-mounted control system for better adjustment, sheet trimers, guillotines and sheet guides, feed rollers The sheet, the main part of the cut, the stripping rollers, the strip holder, and, finally, the strip holder.
After the coil is placed on the coil, which also has a circular motion, the coil turns, and after opening the hoops, the head is guided under the roller rollers. This action makes the sheet smooth and flattened. The guillotine is cut to the top of the plate so that there is no problem for welding in the next parts.
The sheet was then fed by rollers to two main shaft driven drives, and the steel blades, the heat treatment was performed on them and the hardness reached between (61-59) Rockwell, and their distances were proportional to the width of the strips Adjusted need to move. The cutting of the blade is carried out through the passage of the sheet.
The movement of the sheet (strips) continues forward, and because the cut strips are precisely forwarded, two separate separating shafts, on which small blades are placed, are passed, until the end of the head bands It is cut in a special clamp, which is located inside the collector bar (and opened by a hydraulic system, which opens the bar for a few centimeters in diameter).
This action, on the one hand, causes the two edges of the clamp to be tightened and the strips are tapped, and on the other hand, at the end of the discharge time of the strips, with the clamping of the tape, the inner layer of the sheets is separated, and the strips can easily be removed by a moving table and a plate Moves in the direction of the main axis. From this step, pull the sheet to the end of the entire length of the coil. The strips are eventually categorized and transported to different parts of the production lines.
3- Manufacture of profile pipes:
Cans and profiles can be produced in two ways, directly and indirectly. The selection method depends on the design of the machine. Generally open profiles are produced in direct mode. Tubes and profiles usually have bar, guillotine, head and toe bar, storage, and forging sections (which consist of two primary forming and final forming sections, a double-edged section of the profile, a cutter, a cutter, a sizing With 4 to 6 gates, bending and torsion cutting are automatic, accelerator and finally drainage table.
Given the device's design and manufacturing method, the above parts will be slightly modified in terms of number and size, but what's worth noting is that the main operation of these devices is to shape the sheet The passage between the two top and bottom molds is spinning at different gates to produce the cold end product.