Composite materials guide can be gotten by strengthening carbon steel guide with oxyacetylene hot spray welding. Replacing high carbon alloy guide with it has a good result.

• 用氧化乙炔焰热喷焊技术对普碳钢导卫装置进行表面强化，制成复合材导卫以替代高碳高合金导卫，取得较好效果。