通过双气流煤油雾化喷嘴注入煤油、氧气和一次氮气，通过二次高压氮气切向注入技术注入二次氮气，两次注入的氮气与燃烧气体掺混并通过拉瓦尔喷嘴加速至超音速状态，粉末粒子利用下游侧向双孔注入技术从喷管直管段的欠膨胀低压区送入，在轴线方向高压高温气体的推动下，以熔融或半熔融形态沉积在基体表面上，形成致密度高、牢固性好、功能性强的涂层。

The powder particles are fed from the underexpanded low-pressure area in the straight section of the nozzle using the downstream lateral double-hole injection technology, and are deposited on the substrate surface in molten or semi-molten form under the impetus of high-pressure high-temperature gas in the axial direction to form a high-density, solid and functional coating.