Inspection rules of hydraulic vane pump
(8) Inspection rules of hydraulic vane pump
① Inspection classification. Product inspection is divided into delivery inspection and type inspection.
a. Factory inspection. Ex factory inspection refers to the inspection that should be carried out when the product is delivered.
The items and methods of performance inspection shall comply with the provisions of (6), and the performance index shall comply with the provisions of (5) in (2); the inspection methods of assembly and appearance shall comply with the provisions of (7), and the quality shall comply with the requirements of (5) in (3) and (5) in (4).
b. Type inspection. Type inspection refers to the comprehensive assessment of product quality, that is, the comprehensive inspection according to the technical requirements specified in this standard. In case of any of the following situations, type inspection shall be conducted: trial production and type identification of new or old products transferred to other factories; after formal production, if the structure, material and process have great changes, which may affect the product performance; when the product is stopped for a long time, production is resumed; when the ex factory inspection results are significantly different from the previous type inspection results; when the national quality supervision organization proposes to carry out type inspection When type inspection is required.
② Sampling. The sampling plan for product inspection shall be in accordance with GB / T 2828.1.
Note: sampling for quality supervision and inspection shall be in accordance with relevant regulations.
a. Sampling for factory inspection. Acceptance quality limit (AQL value): 2.5; sampling scheme type: one time sampling scheme for normal inspection; inspection level: special inspection level II.
b. Sampling for type inspection. AQL value: 2.5 (6.5); sampling plan type: one time sampling plan for normal inspection; sample size: five sets (two sets).
Note: the values in brackets are only applicable to durability test.
③ Decision rules. According to GB / T 2828.1.
(9) Marking and packaging. The mark and package shall comply with the provisions of GB / T 7935-2005. Special requirements can be specified separately