气门是汽车发动机上的关键零件,它在工作中要承受极高的冲击性交变载荷的作用,排气门还要受到高温、高压的影响。因此,有必要采取有效措施,对其工作表面进行强化处理,以延长其使用寿命。气门的喷焊,是一种利用热源产生的热能把自熔性合金粉末加热到熔化或半熔化状态,高速地喷射到经预处理过的气门密封面上,再经重熔形成强化喷焊层的强化、修复工艺。 Valve is a key part of the car engine, it is in the work to withstand the impact of alternating high impact load, the exhaust valve also subject to high temperature and pressure effects. Therefore, it is necessary to take effective measures to strengthen the surface of its work in order to extend its useful life. Valve spray, is a heat generated by the heat source of self-fluxing alloy powder heated to melt or semi-molten state, high-speed spray to the pre-treated valve sealing surface, and then remelted to form an enhanced spray layer The strengthening, repair process.