| 摘要 |
A burner for flame-spray coating, being capable of sufficiently high flame temperature and being capable to flame-spray powder material of high melting point by using such fuel gas as C3H8 or C4H10 with high efficiency of deposition, having a gas-powder stream supplying conduit connectedly arranged at the rear portion of a pre-mix combustion chamber, from where gas-powder stream being jetted into the chamber, characterized that at least a series of auxiliary combustion gas (oxygen, oxygen enriched air) supplying passages are annularly provided on the conical wall face of said chamber with the direction of converging toward an opening for flame jet and the axis of the pre-mix combustion chamber.
|
