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pv值表示什么?

Lars Butenschön | 9 7 月, 2019

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pv值是速度(V)和压强(P)的乘积。 该值表示单位时间内轴承所产生的热量。 对于滑动轴承,通常会显示最大的pv值。这是由于所涉及材料的散热能力,在单位时间内可以除去的热量。如果当前在载荷作用下运动所产生的热量大于同时可以散去的热量,那么轴承点就会升温,直到部件失效。pv值可以判断滑动轴承是否适合在轴承点移动,但遗憾的是,它说明不了滑动轴承在应用中的耐久性:最大为两倍高的pv值的滑动轴承是否比那些pv值只有1.5倍高的滑动轴承持续时间更长? 应该计划多少安全系数?

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