What is combustion? What are the basic conditions for combustion? Answer: Combustion is a process in which substances combine with each other and produce light and heat. What we usually call combustion refers to the violent chemical reaction between combustibles and oxygen in the air.Vacuum Furnaces Leaks and Detection Techniques A certain temperature is required when a combustible material burns. The minimum temperature required when a combustible material begins to burn is called the ignition point or ignition point of the material.Process Of Preventing Deformation And Cracking Of Mold By Vacuum Heat Treatment The basic conditions for material combustion: first, combustibles, such as fuel oil, gas, etc.; second, there must be combustion accelerants, such as air, oxygen; third, there must be an open flame or a high enough temperature. Combustion cannot occur without one of the three. This is the "three conditions of combustion" or the "three elements of combustion".vacuum-brazing-repair-method-for-cracks What are radiation heat transfer and convective heat transfer? Answer: Radiation heat transfer is a process of transferring energy by electromagnetic waves. The energy transferred is called radiant energy. Radiation has dual properties of particulate (photons) and wave (electromagnetic waves). Convective heat transfer is the transfer of heat from one part of space to other parts by moving liquid or gas particles relative to each other.Vacuum brazing of ceramic and metal materials