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导弹液压系统故障的60％以上是由于工作油液中固体污染物所致。导弹属一次性使用的产品,其可靠性要求比寿命要求高。导弹内液压油污染原因有油液污染、自身污染及地面液压装置污染三方面。为确保导弹液压系统清洗质量,确定了检验方法、制订了污染等级标准。清洗必需在紊流态,为此用计算及实测法确定工艺参数,通过合理选择滤油器滤除污物;根据统计规律确定清洗工艺程序及抽样检验时间点作为出具“系统清洗合格证”的依据。
More than 60% of missile hydraulic system failures are due to solid pollutants in the working fluid. Missile is a one-time use of the product, its reliability requirements than life expectancy. Missile hydraulic oil pollution due to oil pollution, pollution and ground hydraulic device three aspects of pollution. In order to ensure the cleaning quality of the missile hydraulic system, a test method was determined and a pollution level standard was formulated. Cleaning must be in turbulent state, for which the calculation and measurement methods to determine the process parameters, through the rational choice of filter to filter out the dirt; according to the statistical rules to determine the cleaning process and sample inspection time points issued as a “system cleaning certificate” in accordance with.