论文部分内容阅读
本文通过金相组织分析,网格变形试验和现场测试,论述了高速锤挤压变形对1Cr13动叶片组织和性能的影响。结果指出:锤或压力机上模鍛的叶片由于叶背处变形程度很小和常因终鍛温度较高,鍛后晶粒粗大,机械性能较低;而高速锤挤压的叶片由于流经孔口时有较大的变形,尤其是有较大的剪切变形,加之在模具内金属冷却速度较快,故可得到细小的晶粒和细小马氏体组织,从而有较高的机械性能。这就为用高速锤挤压1Cr13不锈钢叶片后只进行去应力回火处理,代替用常规的模鍛设备在模锻2Cr13不锈钢叶片后需经调质处理的老工艺提供了依据。
In this paper, the effects of high-speed hammer extrusion on the microstructure and properties of 1Cr13 rotor blades are discussed through metallographic analysis, grid deformation test and field test. The results show that: the blade on the hammer or press due to the blade deformation is very small and often because of the final forging temperature is high, after forging grain coarse, low mechanical properties; and high-speed hammer extrusion blade due to flow through the hole Mouth when the larger deformation, in particular, have a larger shear deformation, combined with rapid cooling of the metal in the mold, it can be fine grain and fine martensitic tissue, which has a higher mechanical properties. This is the use of high-speed hammer squeeze 1Cr13 stainless steel blades only after the stress-relief tempering, instead of using conventional forging equipment in the forging 2Cr13 stainless steel blades to be quenched and tempered after the old process provides a basis.