The video provides an in-depth look at the production process of gas cylinders. It begins by discussing the curiosity about gas cylinders and their importance in kitchen safety, as they contain flammable gas. The video then moves on to describe the structure of a gas cylinder, which consists of five large parts and three small ones. These include the lower handle, lower dome, upper dome, upper handle, and the flange, which houses the valve, safety plug, and tare plate.
The production process begins with the main raw material, steel, which arrives in large coils. The steel is then unrolled and passed through a planing line to straighten it. The steel is then cut into circles and rectangles using powerful presses, forming the body of the bottle. The distributor's marks and registration numbers are also added at this stage.
The steel circles then pass through a hydraulic forming press, which forms half of the bottle's body. The rings are then sent through a calender to form a ring, and a weld is applied at the seam. The upper and lower parts of the bottle are then joined together using a type of MIG MAG welding.
The flange, where the valves are located, is treated differently. It has a thread that is machined inside the part, and a fitting is made to join the two parts. The parts are then welded together at the end.
After the parts are welded, they undergo an inspection to check if everything is as it should be. The bottle then undergoes a thermal treatment called annealing to relieve stress points created during the welding process. The final step is to paint the cylinder in layers.
The video concludes by discussing the transportation of the cylinders to gas distributors, and the process of refilling the cylinders when the gas runs out. The video emphasizes the importance of the gas cylinder's safety features and its role in home cooking.
1. Gas cylinders are a common item in kitchens, often containing liquefied petroleum gas (LPG) due to the pressure inside.
2. The cylinder is made up of five main parts: the lower handle, the lower dome, the upper dome, the upper handle, and the flange.
3. The flange houses the valve, which releases the gas, the safety plug, a fire protection device, and a tare plate, which indicates the cylinder's weight when empty.
4. The most common cylinder is the P13, which can carry 13 kg of gas.
5. The design of each cylinder depends on the substance it will store.
6. The main raw material for the cylinders is steel.
7. The steel arrives in coils, which are unrolled and then shaped into the cylinder's body using powerful presses.
8. The distributor's marks and registration numbers are added using presses.
9. The cylinder undergoes a series of safety standards checks.
10. The cylinder is heated to 650 degrees Celsius and then cooled in a process known as annealing to relieve stress points in the steel structure.
11. The cylinder is tested to its limit to ensure it can withstand the necessary pressure.
12. Cylinders are cleaned with steel grit before painting.
13. The cylinder is painted in layers: an anti-corrosive background, two more layers of primer and enamel paint.
14. The cylinder is fitted with a safety plug made of a bismuth alloy, which melts easily and allows the gas to escape in case of a fire.
15. The cylinder is pressure tested to ensure it can withstand 17 times the atmospheric pressure.
16. The valve is fitted and sealed, and any leaks are checked for.
17. The cylinder is weighed and a tare plate is placed to indicate its weight.
18. Another type of cylinder developed is much lighter, weighing between 8.5 kg and 9.5 kg empty.
19. The cylinders are loaded onto trucks and sent to gas distributors, who fill them with LPG and distribute them to households.
20. A well-maintained cylinder can last more than 40 years.