Today, let's take a look at the specific content of testing the quality of cable tray. Any product can only be listed if it meets the national regulations after passing the testing, and cable tray is no exception. Today, we collate relevant materials to introduce the specific content of testing the quality of Jinan cable tray.
1. Visual inspection
All parts shall be inspected by visual inspection, and the following defects are not allowed: bubbles. The diameter of large bubbles on the surface of the corrosion resistant layer is allowed to be 5 mm. When there are less than 3 bubbles with a diameter of no more than 5 mm per square meter, they can not be repaired, otherwise they should be scratched and repaired; Cracks, no cracks with a depth greater than 0.5mm are allowed on the surface of the corrosion resistant layer, and no cracks with a depth greater than 2mm are allowed on the surface of the reinforcement layer; Concave convex (or wrinkle), the surface of the corrosion resistant layer is smooth and flat, and the thickness of the concave convex part of the reinforcement layer is not more than 20% of the thickness; The back white area is not allowed in the anti corrosion layer and the large diameter of the back white area in the reinforcement layer is 50mm; For others, the bonding between layers of glass fiber reinforced plastic bridge shall be firm, and no layering, delamination, layer fiber exposure, resin nodule, foreign matter inclusion, obvious uneven color, etc. are allowed.
2. Measurement of mechanical properties and resin content of materials
At the same time of making glass fiber reinforced plastic cable tray, a certain number of samples shall be made according to the same raw materials and process conditions, or samples shall be taken from the arrived cable tray to test the material mechanical properties and resin content. The test shall be carried out in accordance with the relevant national standards of China, and the data results shall meet the design requirements of the product.
3. Determination of surface hardness of glass fiber reinforced plastic bridge materials
On the one hand, the surface hardness of the material indicates the curing degree of the resin, on the other hand, it can reflect other physical and chemical properties of the material. The hardness is measured with a Barcol hardness tester.
4. Measurement of geometric dimensions and wall thickness of glass fiber reinforced plastic bridge
Before leaving the factory or after arriving at the factory, the geometric dimensions and wall thickness of the glass fiber reinforced plastic bridge shall be measured in detail with steel measuring tools with corresponding accuracy requirements. Those unqualified shall be degraded for use or scrapped. In addition, the loading test and corrosion resistance immersion test of the cable tray shall be conducted by the manufacturer or jointly with the user.
The above is all about the specific content of testing the quality of cable tray. For more information, please follow our official website http://www.yeeones.com Yes, we will keep updating relevant content for you. You can also call to inquire.