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挖掘机行业组于1980年10月在南京集会,根据行业组对液压挖掘机液压油箱、主要液压件及机械式挖掘机操纵系统储油器、减速箱所进行的清洁度调查情况,参考美、日等国关于液压油污染度的有关规定,制订了机械式与液压式挖掘机清洁度检查方法与标准的暂行规定。按照行业组的决定,1981年起将按此项规定进行厂内自检和行业互检。
The excavator industry group gathered in Nanjing in October 1980. According to the industry group’s investigation of the cleanliness of hydraulic excavator hydraulic oil tanks, main hydraulic components, and mechanical excavator operating system oil reservoirs and gearboxes, the United States, In Japan and other countries, regulations concerning the degree of contamination of hydraulic oil have been formulated and provisional regulations for cleanliness inspection methods and standards for mechanical and hydraulic excavators have been formulated. In accordance with the decision of the industry group, from 1981 onwards, in-plant self-inspection and industry mutual inspection will be conducted in accordance with this provision.