What are the quality standards for the appearance inspection of injection parts?

What are the quality standards for the appearance inspection of injection parts?

The quality standard for appearance inspection of injection molded parts can include the following 8 aspects:

(1) Surface smoothness: The surface of the injection molding part should be smooth and flat, without obvious flaws and lines. Inspection should pay attention to whether there are shrinkage holes, welding lines, deformation, silver and other defects.

(2) Color and gloss: the color of the injection molding part should be consistent with the design requirements, and the gloss should also meet the expectations. During inspection, samples can be compared to observe whether there are problems such as color difference and inconsistent luster.

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(3) Dimensional accuracy: the size of the injection molding parts should meet the design requirements, with high precision and stability. When checking, you can use calipers, plug gauges and other tools to measure the size, and pay attention to whether there is overflow, shrinkage inequality.

(4) Shape accuracy: the shape of the injection molding part should be consistent with the design requirements, without significant deviation. During inspection, samples can be compared to observe whether there are distortion, deformation and other problems.

(5) Structural integrity: the internal structure of the injection molding part should be complete, without bubbles, cracks and other problems. During inspection, you can observe whether there are defects such as pores and cracks.

(6) Accuracy of the mating surface: the mating surface of the injection molded parts should be accurately matched with the adjacent parts, without loosening or excessive clearance problems. During inspection, samples can be compared to observe whether there are problems such as poor fit.

(7) Font and logo clarity: the font and logo on the injection molding parts should be clear and easy to recognize, without ambiguity or incomplete problems. The sample can be compared during inspection to see if there are problems such as blurred handwriting.

(8) Environmental protection and health requirements: injection parts should meet the relevant environmental protection and health requirements, such as non-toxic, tasteless, non-radioactive. The inspection should pay attention to whether the material meets the relevant standards.

To sum up, the quality standards for the appearance inspection of injection molded parts include surface smoothness, color and gloss, dimensional accuracy, shape accuracy, structural integrity, mating surface accuracy, font and mark clarity, environmental protection and health requirements and other aspects. In the inspection process, the appropriate inspection tools and methods should be selected according to the actual situation, and pay attention to the comparison of samples to ensure that the injection parts meet the quality requirements.


Post time: Dec-26-2023