The inspection of finished products of extruded materials mainly includes the chemical composition, organization, performance, size and shape, surface and marking of the products, and inspection and acceptance according to the batch. The inspection procedures are as follows:
1 Check whether the batch number, alloy, status, and specifications of the products submitted for inspection and acceptance are consistent with the processing and production card, and then check the items according to the technical specifications of the contract order specifications.
2 Review the organization, performance and other Pear inspection reports are complete and clear. After item-by-item examination, the size and surface inspection can be carried out, and the unqualified items should be treated with emphasis.
3 Carry out the inspection of the dimensional shape and surface quality, and check the quality standards in strict accordance with the technical standards of the finished products. The relevant regulations of the drawings shall be carried out on special inspection platforms, inspection frames, measuring tools or professional samples. The standard accuracy is specified, and the dimensions are inspected according to the corresponding technical standards. The diameter, inner diameter, thickness, wall thickness, outer core size, hollow part size, plane clearance, twisting, wave, bending and length of the length are checked.
Surface quality inspection, most of the products are still 100% inspection by wood. The inspection items are mainly extrusion cracking, skin, bumps, scratches, bubbles, metal and non-metal intrusion, corrosion spots, etc. For the inspection of the outer surface quality of the thin-walled small-diameter material, the automatic detector is used to check the eddy current. For the special requirements, the 100% ultrasonic flaw detection shall be carried out during the inspection of the finished product.
Article source: www.bombgroup17.com Aluminum alloy sheet, ultrasonic aluminum, American Airlines metal