论文部分内容阅读
1984年,我厂按照“液压件清洁度暂行检测办法”,对YB1系列叶片泵作了清洁度检测,发现各档的清洁度均超标,后经过半年的“治脏治漏”工作,清洁度值均被控制在指标以内。其值如下:YB_1—10、25、50、100,分别为181.1、197.5、223.3、251.0_(mg)。指标虽然达到了,但是不是最佳值?经半年来,对数十台泵的定期抽查,显微分析表明,污染物成份主要是:铸铁铁屑54％、砂粒31％、灰尘10.5％,铜屑0.5％,其它占4％。占比重较大的铁屑与砂粒来自何处?是由试验台带入液压泵的?还是零件未清洗干净,遗留下来的?
In 1984, according to the “Provisional Testing Methods for Cleanliness of Hydraulic Parts”, YC1 series vane pumps were tested for cleanliness and found that the cleanliness of all the files exceeded the standard. After six months of work on " Values are controlled within the indicator. The values are as follows: YB_1-10, 25, 50, 100, respectively 181.1, 197.5, 223.3, 251.0_ (mg). Although the index has reached, but not the best? After six months, dozens of pumps on a regular basis spot checks, microscopic analysis showed that the main pollutants are: iron cast iron 54%, sand 31%, 10.5% dust, copper 0.5% scrap, others account for 4%. What proportion of the larger proportion of iron and sand come from? Is brought into the hydraulic pump from the test stand? Or parts are not cleaned, left over?