At present, the commonly used die forgings quality inspection method, including the overall inspection and microscope, mechanical property test and the chemical composition and nondestructive testing, understanding among them, the check is the overall organization, using visual or low magnification magnifying glass check and understand forging folding characteristic of inspection, forging the overall detection of commonly used method is low corrosion, Fracture test and sulfur printing, quality inspection of forgings prior to production and delivery.
Due to check into the appearance quality inspection and application of quality inspection, the appearance quality inspection usually non-destructive inspection, it can be done by the naked eye or low magnification magnifying glass, and if necessary, you can also use the non-destructive testing, with the continuous development of forging pieces of technology, metal deformation and elongation become fibrous structure, thus greatly improve the toughness of the material, therefore, After forging, the internal structure of the material becomes very strong, which obviously improves the mechanical properties, which is also the main reason for the performance advantage of forging, so forging is an important process in machine manufacturing.
Nowadays, the so-called low corrosion method, mainly used for the detection of forging cracks, and non-metallic inclusion, for low magnification of the specifications of the different materials is different, and fracture test method, can be used to check the possible problems in the forging press forging parts, layered and internal defects such as cracks, for some large steel forgings, In order to check whether the distribution of sulfur is uniform and the amount of sulfur, the low-spectrum test specimen does not carry out the following heat treatment, and generally carries out the low detection after heat treatment.
Learned of aluminium alloy forging billet heating device, including furnace, electric heating element and conveying mechanism, furnace body left and right sides of the opening respectively, and the electric heating element in the body is decorated in the stove, under the action of transmission mechanism in the application, can reduce the heating furnace of aluminum alloy billet heat differences, so as to reduce the possibility of blank crack and scraping.
I believe that through the above reading, we have a clearer understanding of how to check the quality of die forging. Die forging can not only be used in ships, locomotive parts, rail transit, in the aerospace industry, we can also find his figure. So for the quality of forgings, we must carefully detect, to avoid unnecessary accidents in use.