Different Molding And Static Properties Of High Pressure Tees In Stainless Steel Pipe Fittings
Stainless steel pipe fittings, medium and high pressure tees are used in the petroleum, chemical, nuclear power, food manufacturing, construction, shipbuilding, papermaking and other industries. The strength of the high pressure tee is very high, which is twice that of the galvanized pipe, three times that of the copper pipe, and 8-10 times that of the PP-R pipe. It can withstand vibration and shock very well, and has the characteristics of no water leakage, no bursting, and fire prevention, so it is very stable; it is also used in water, beverages, beer, food, petrochemical, nuclear power, machinery, equipment, fertilizer, shipbuilding, water treatment, pipelines, etc. High pressure tees are divided into equal diameter and different diameters. The ends of the pipes of equal diameter tees are all the same size. The main pipes of different diameter tees are the same size, and the pipe size of the branch pipe is smaller than the pipe size of the main pipe. For the use of seamless pipes to manufacture tees, there are currently two commonly used processes, namely: hydraulic bulging and hot pressing. The hydraulic bulging of high pressure tees is a forming process that expands the branch pipe through axial compensation of metal materials. The process is to use a hydraulic press to inject liquid into a tube with the same diameter as the tee, and squeeze the tube through the synchronous centering movement of the two horizontal side cylinders of the hydraulic press. After the tube is squeezed, the volume of the tube becomes smaller, and the pressure of the liquid in the tube increases as the volume of the tube decreases.
What is the significance of the static characteristics of Stainless Steel Weld Tee?
1. The significance of the static characteristics of high-pressure tees When the arc length is long, the relationship between the arc burning voltage and the welding current is called the arc static characteristics. The curve that represents their relationship is called the arc static characteristic curve. The welding arc is the load in the welding circuit. It plays the role of converting electrical energy into thermal energy. In this respect, it is similar to ordinary resistors.
2. It has obvious characteristics compared with ordinary resistors. When an ordinary resistor passes current, the voltage drop across the resistor is proportional to the current value passing through.
3. According to Ohm's law, its ratio is basically unchanged, which is called the static characteristic of resistance. When the welding arc is burning, the voltage drop across the arc is not proportional to the current value passing through the arc, and its ratio changes with different current values.
4. The influence of arc length change on arc static characteristics of high-voltage tee In automatic melting electrode argon fox welding and automatic tungsten electrode argon arc welding, the distance between the two electrodes is basically fixed, so the arc length does not change much.
5. In manual tungsten electrode argon fox welding or semi-automatic melting electrode argon arc welding, the arc is operated manually, so the arc length changes at any time. Therefore, the position of the arc static characteristic curve also changes accordingly, but the shape of the arc static characteristic curve remains basically unchanged. When the arc is elongated, the arc static characteristic curve moves upward; when the arc is shortened, the arc static characteristic curve moves downward.
6. The application scope of each section of the arc static characteristic curve When welding a high-voltage tee, any point of the arc static characteristic curve can make the arc burn stably. In argon arc welding, the selection of each section of the arc static characteristic curve is different depending on the type of electrode used.
