Aluminum plastic cover inspection standard procedure(1)

Aluminum plastic cover inspection standard procedure
Objective: To establish a standard procedure for the inspection of aluminum-plastic caps in order to control the quality of incoming aluminum-plastic caps.
Scope: Applicable to the inspection operation of aluminum-plastic caps.
Responsibilities: The inspectors of the quality department are responsible for the implementation of this regulation.
program:

1. Sampling
1.1 According to the requirements of the quality standard, the batch size of the inspection product, the level of inspection items and the level of qualified quality determine the sampling plan and sampling volume of the inspection product.
1.2 Carry out random sampling according to the attached table "Sampling Plan Table for Normal Inspection of Aluminum-plastic Covers".
2. Check
2.1 Appearance quality:
2.1.1 Visual inspection, observe whether the color of the aluminum-plastic cover is uniform, whether the appearance is clean, whether there is any residual lubricant, burr, damage and injection flash, and whether the combination of the plastic part and the aluminum part is complete.
2.1.2 Record the number of non-conforming products.
2.1.3 Eligibility criteria: the number of unqualified products in this item should not exceed the number of qualified judgments.
2.2 Specifications and dimensions:
2.2.1 Main dimension measurement Measuring tool: Vernier caliper with an accuracy of 0.02mm.
2.2.1.1 Inspection of the inner diameter of the aluminum-plastic cover: use the measuring claw inside the edge of the vernier caliper against the inside of the aluminum cover for measurement.
2.2.1.2 Inspection of the outer diameter of the aluminum-plastic cover: measure with a vernier caliper. When measuring, the outer measuring claws of the caliper must be used to clamp the plastic and aluminum parts of the aluminum-plastic cover up and down, and measure 1/2 of the cover edge. 4 prevails.
2.2..1.3 Inspection of the overall height of the aluminum-plastic cover: Use the outer measuring claws of the vernier caliper to clamp the upper and lower parts of the plastic and aluminum parts of the aluminum-plastic cover, and take a reading without falling.
2.2.1.4 Inspection of the inner height of the aluminum-plastic cover: Insert the depth gauge of the vernier caliper into the inner bottom surface, and the guide surface is stuck on the lower edge plane of the aluminum-plastic cover, and take a measurement reading.