摘要
活塞是柴油机的主要部件之一,其可靠性和寿命直接关系到机车柴油机的性能和运行安全。基于HX_N5型货运机车柴油活塞的研制,从活塞结构、活塞材料以及活塞特殊工艺方面展开研究,对结构设计、活塞裙铝合金材料变质及其固溶时效工艺、环槽高频淬火强化工艺、球铁销座球化率提升工艺、异型销孔加工检测、活塞变椭圆形线技术、活塞表面锰磷化及其减磨涂层工艺等方面进行了研究,以实现重载货运机车活塞的承载能力和可靠性的目标。
Based on the R ＆ D of pistons for HXN5 freight locomotives in respect of piston structures, materials and special manufacturing techniques, this paper summarizes the researches on piston structure renovation, aluminum alloy modification for piston skirt and its solution and aging treatment, HF quenching process for ring grooves, improvement of nodularization rate for the nodular cast iron pin boss, machining and testing of specially - shaped pin bore, varying elliptical profile technology for the piston, manganese - phosphating of piston surface and anti -friction coating techniques, which are intended to meet the requirements for higher load - bearing capacity and reliability of the piston.
出处
《机车车辆工艺》
2009年第4期1-5,共5页
Locomotive & Rolling Stock Technology
