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粉末冶金是一项很有发展前途的新技术、新工艺。由于它具有技术、经济效果显著及其它方面的特点,因而,近几年来它在国内外的发展极为迅速。我厂生产的Y50摆线油马达中的配油盘,选用Fe基粉末冶金制成。它结构复杂,在高压(210kgf/cm~2)、高速(850rpm)旋转运动的条件下,承受很大的压力和滑动摩擦。因此,需要零件具有很高的抗磨损性能和较好的防泄漏性能,尤其要求其耐磨性。过去,Fe基粉末冶金经压制、烧结、复压,只有烧结时遗留下的极少的碳量,且无合金元素存在,在热处理900℃加热淬火后,表面硬度很低(≤Hv255),造成配油盘工作中磨损较严重。零件的磨损,使其几何精度下降,工作异常,过早产生较大泄漏而失效,整机工作性能受到影响。众所周知,工件的磨损主要分三个阶段,即磨合、稳定磨损和剧烈磨损(见图1)。而工件使用寿命的长短主要取决于稳
Powder metallurgy is a promising new technology, new technology. Because of its technical, economic and other characteristics, it has developed rapidly at home and abroad in recent years. Y50 cycloid oil motor in our factory with oil pan, made of Fe-based powder metallurgy. It is a complex structure, under high pressure (210kgf / cm ~ 2), high-speed (850rpm) rotary motion conditions, under great pressure and sliding friction. Therefore, the parts are required to have high wear resistance and good anti-leakage performance, especially their wear resistance. In the past, the Fe-based powder metallurgy was pressed, sintered and re-pressed, leaving only a very small amount of carbon left behind during sintering without any alloying elements. After heat-treated at 900 ° C for heating and quenching, the surface hardness was very low (≤Hv255) With oil pan wear more serious work. Parts of the wear and tear, so that the decline in geometric accuracy, abnormal work, prematurely produce larger leaks and failure, the whole working performance is affected. As we all know, the wear of the workpiece is divided into three phases, namely run-in, stable wear and severe wear (see Figure 1). The length of the life of the workpiece depends mainly on the stability