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前言渗铝是提高金属高温抗氧化、抗燃气腐蚀能力的重要途径,是发动机中某些高温部份的关键零件延长使用寿命的有力措施之一。到目前为止,国内外广泛采用的仍是固体渗铝法。固体渗铝虽然质量比较稳定,对设备无特殊要求,但它也存在一些弱点,如:效率低、劳动条件差等等。特别是随着发动机的不断改进,广泛采用空心叶片,固体渗铝法的应用更受到一定的限制。同时,现在国内外气相渗铝工艺均要求渗铝剂与被渗铝零件的距离很近,因而限制了设备生产能力,
Introduction Aluminizing aluminum is an important way to improve the ability of high temperature oxidation resistance and gas corrosion resistance of metal. It is one of the effective measures to prolong the service life of some key parts in the engine. So far, the widespread use of solid aluminizing method at home and abroad. Although the quality of solid aluminum coating more stable, no special equipment requirements, but it also has some weaknesses, such as: low efficiency, poor working conditions and so on. Especially with the continuous improvement of the engine, widely used hollow blades, the application of solid aluminizing method is subject to certain restrictions. At the same time, at home and abroad are now required aluminous vapor aluminizing process aluminized aluminum parts and the distance is very close, thus limiting the equipment production capacity,