一、概述含油轴承是一种基础元件。它的制造成本为滚动轴承的1/10～1/3,维护保养很方便,有较好的自润滑性能。广泛应用于家电、纺织、仪表、食品、农机等行业,国内年产量达几亿件之多。最早的含油轴承是用硬木浸油而成(至今仍有应用),经历史长期发展才演变成目前常见的这种多孔结构金属轴承。就制造获得的工艺来分,主要有两类:一类是利用铸铁或铸青铜添加某些金属或非金属元素,经过特殊处理,使之形成多孔组织方法所制成。例如使铸铁在变态点A_1上下反复加热和冷却,使其体积显著膨胀,从而造成多孔结构,增大铸件的孔隙率。利用这种孔隙浸以适当的润滑剂后用作含油轴承。日本在1942年就发现并制成了这种轴承。这种含油轴承 First, an overview Oil-bearing is a basic component. Its manufacturing cost is 1/10 ~ 1/3 of the rolling bearing, it is convenient to maintain and maintain, have better self-lubricating performance. Widely used in home appliances, textiles, instrumentation, food, agricultural machinery and other industries, the domestic annual output of up to hundreds of millions of pieces. The earliest oil-bearing is impregnated with hardened hardwood (there are still applications), after a long history of history evolved into the common structure of the porous metal bearing. There are two main types of manufacturing processes: one is the use of cast iron or cast bronze to add certain metallic or non-metallic elements, and specially treated to form porous structures. For example, the cast iron is repeatedly heated and cooled up and down at the metamorphic point A_1, causing its volume to expand significantly, resulting in a porous structure and increasing the porosity of the castings. Use this pore impregnated with a suitable lubricant for oil-bearing. Japan in 1942 discovered and made this bearing. This oil bearing