Determination of calorific value of coalMade of heat-resistant and corrosion-resistant nickel-chromium or nickel-chromium-aluminum alloy steel, three main properties are required:
a) is not affected by the high temperature and corrosive products that occur during the combustion process and produces thermal effects;
b) Able to withstand the oxygenation pressure and the transient high pressure generated during the combustion process
c) During the test, the volume of the completely airtight cartridge can be maintained at (250-350) mL, and the warhead should be equipped with valves for oxygenation and exhaust and wiring electrodes for ignition power.
Oxygen bombs with new oxygen bombs and new replacement parts (barrels, warheads, connecting rings) should be subjected to a water pressure test of 20.0 MPa, and they can be used without any problems. In addition, you should always pay attention to the structure related to the strength of the oxygen bomb, such as the thread of the cartridge and the connecting ring, the inlet valve, the outlet valve, and the connection between the electrode and the bullet. Reuse after passing the hydrostatic test.
Oxygen bombs should also be subjected to periodic hydrostatic tests. After each hydrostatic test, the use time of the oxygen bomb should generally not exceed 2 years.
When using multiple designs to make the same bomb, each bomb should be used as a complete unit. The exchange of oxygen bomb components may lead to serious accidents.