Pressure vessel manufacturing


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Pressure vessel manufacturing

  1. 1. Pressure vessel manufacturing<br />
  2. 2. What is a Pressure Vessel?<br />A pressure vessel is a container designed used to hold gases or liquids at a pressure different from the ambient pressure.<br />
  3. 3. TYPES OF PRESSURE VESSELS<br />Thin-walled<br />Thick-walled<br />Diameter is 10 times or more the thickness of wall.<br />Diameter is less than 10 times the thickness of wall.<br />
  4. 4. MATERIALS USED<br />Steel<br />Aluminum<br />Other metals<br />Carbon Fibers<br />Polymers<br />
  5. 5. EXAMPLES:<br />Diving cylinder or Scuba Tank<br />LPG tanks<br />Tankers<br />
  6. 6. MANUFACTURING PROCESS<br />Forming<br />Pressing<br />Spinning<br />Bending<br />Welding<br />Post Weld Heat Treatment (PWHT)<br />Assembly<br />Painting<br />
  7. 7. Forming<br />the process by which the size or shape of the part is changed by application of force<br />Hot forming – fabrication temperature is above the recrystallization temperature of the material.<br />Warm forming - fabrication temperature is above room temperature but below recrystallization temperature of the material.<br />Cold forming – fabrication temperature is very much below the recrystallization temperature of the material.<br />
  8. 8. Recrystallization<br />A process by which deformed grains are replaced by new undeformed grains<br />Recrystallization Temperature<br />the minimum temperature at which complete recrystallization occurs<br />
  9. 9. Pressing<br />A process wherein a pressing machine is used to shape the part needed<br />
  10. 10. Spinning<br />The process used to shape the end of the pressure vessels, which is called the head<br />After pressing, the material is loaded into<br /> the spinning machine. While spinning,<br /> the material is formed using adjustable<br /> rollers until the final shape is achieved.<br />
  11. 11. Bending<br />Process which curves the material to the desired radius<br />Uses a bending<br /> machine<br />Also called rolling<br />
  12. 12. Welding<br />Process by which two or more materials<br /> are joined permanently by melting both<br /> materials.<br />
  13. 13. POST WELD HEAT TREATMENT (PWTH)<br />A process of improving the properties of the weldment<br />Uses a furnace to heat the product<br />
  14. 14. Assembly<br />Process of joining the parts of the pressure vessel<br />
  15. 15. Painting<br />Process of applying pain to protect the product from corrosion<br />